Fan mechanism and clothes dryer

Abstract

The present application belongs to the technical field of clothes care, and particularly relates to a fan mechanism and a clothes dryer. The present application aims to solve the problems of large size, high cost and low drying efficiency of the existing clothes dryer. The fan mechanism comprises a transmission shaft, a fan body and a planetary gear assembly. The planet carrier and the outer ring gear of the planetary gear assembly are fixedly connected with the fan body respectively. The first one-way bearing is arranged between the transmission shaft and the planet carrier, and the second one-way bearing is arranged between the transmission shaft and the sun gear. The locking directions of the second one-way bearing and the first one-way bearing are opposite. Thus, the transmission shaft is locked with one of the one-way bearings when rotating forward and reversely, and the rotation direction of the transmission shaft is changed through the planetary gear assembly, so that the fan body rotates in the same direction, the air supply of the fan mechanism is improved, the clothes drying efficiency is improved, the size of the clothes dryer is reduced, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of clothes care, and particularly relates to a fan mechanism and a clothes dryer. BACKGROUND

[0002] With the improvement of living standards, people's requirements for clothes treatment are also increasing, and clothes dryers are applied.

[0003] The clothes dryer usually comprises a drying cylinder and a fan, the drying cylinder is used for accommodating clothes and rotates around a horizontally arranged rotating shaft; the fan is used for sending drying air into the drying cylinder and blowing air carrying moisture out of the drying cylinder, so as to circulate and dry the clothes.

[0004] However, one driving motor is arranged for driving the fan and the drying cylinder respectively, which not only leads to large size and high cost of the clothes dryer, or one driving motor is arranged for driving the fan and the drying cylinder, since the drying cylinder alternately rotates forward and reversely, the fan alternately rotates forward and reversely, and the fan alternately sends air into the drying cylinder and blows air out of the drying cylinder, which affects the drying efficiency of the clothes. SUMMARY

[0005] In order to solve the above problems in the prior art, that is, to solve the problems of the existing clothes dryer that two driving motors are arranged for driving the fan and the drying cylinder respectively, which leads to large size and high cost of the clothes dryer, and one driving motor is arranged for driving the fan and the drying cylinder, which affects the drying efficiency, the present application provides a fan mechanism and a clothes dryer.

[0006] The fan mechanism comprises a transmission shaft, a planetary gear assembly and a fan body; the planetary gear assembly comprises a planetary gear, a sun gear, an outer gear ring and a planet carrier, the planetary gear is rotatably installed on the planet carrier, and the planetary gear is meshed with the outer gear ring and the sun gear respectively, the planet carrier and the outer gear ring are fixedly connected with the fan body respectively, the planet carrier is provided with a first shaft hole, and the sun gear is provided with a second shaft hole coaxial with the first shaft hole; the transmission shaft is arranged in the first shaft hole and the second shaft hole, a first one-way bearing is arranged between the transmission shaft and the first shaft hole, a second one-way bearing is arranged between the transmission shaft and the second shaft hole, and the locking directions of the second one-way bearing and the first one-way bearing are opposite; the transmission shaft is used for driving connection with a driving motor.

[0007] In the optional technical scheme of the fan mechanism, the fan body comprises a first mounting plate, a second mounting plate and a plurality of fan blades, the first mounting plate and the second mounting plate are both circular rings, the first mounting plate and the second mounting plate are oppositely spaced along the axial direction of the transmission shaft, the plurality of fan blades are fixed between the first mounting plate and the second mounting plate, and the plurality of fan blades are spaced along the circumferential direction of the first mounting plate; the outer ring gear is fixedly connected with the first mounting plate, and the outer ring gear is fixedly connected with the planetary carrier.

[0008] In the optional technical scheme of the fan mechanism, an inclined surface for avoiding the fan blades is arranged on the side of the outer ring gear facing the second mounting plate, and the inclined surface is inclined towards the center of the outer ring gear.

[0009] In the optional technical scheme of the fan mechanism, the planetary carrier comprises a first fixed plate, a second fixed plate, a connecting plate and a rotating drum, the first fixed plate and the second fixed plate are oppositely spaced along the axial direction of the transmission shaft, and the first fixed plate and the second fixed plate are both circular plates, the diameter of the second fixed plate is smaller than that of the first fixed plate, the first end of the connecting plate is fixedly connected with the first fixed plate and the outer ring gear respectively, and the second end of the connecting plate is connected with the second fixed plate; the rotating drum is provided with the first shaft hole, and the rotating drum is installed between the first fixed plate and the second fixed plate; a circular hole coaxial with the first shaft hole is arranged on the first fixed plate; a rotating shaft for mounting the planetary gear is arranged on the first fixed plate.

[0010] In the optional technical scheme of the fan mechanism, a first transition arc is arranged at the connection between the connecting plate and the outer ring gear, and a second transition arc is arranged at the connection between the connecting plate and the second fixed plate.

[0011] In the optional technical scheme of the fan mechanism, a plurality of rotating shafts are arranged on the first fixed plate, the plurality of rotating shafts are uniformly spaced along the circumferential direction of the first fixed plate, and one planetary gear is rotatably installed on each rotating shaft.

[0012] In the optional technical scheme of the fan mechanism, a first opening is arranged on the first mounting plate, and a second opening is arranged on the second mounting plate; the fan blades are arc-shaped, and all the fan blades protrude towards the same direction; first clamping pieces and second clamping pieces are arranged at both ends of the fan blades respectively, the first clamping pieces are bent and abut against the first mounting plate after being clamped into the first opening, and the second clamping pieces are bent and abut against the second mounting plate after being clamped into the second opening.

[0013] The clothes dryer comprises a driving mechanism, a drying cylinder and the above-mentioned fan mechanism; the driving mechanism comprises a driving motor, a first transmission belt and a second transmission belt, the driving motor is provided with coaxial first and second driving shafts, the first driving shaft is fixed with a first pulley, and the first transmission belt is sleeved on the first pulley and the drying cylinder; the second driving shaft is fixed with a second pulley, a third pulley is fixed on the transmission shaft of the fan mechanism, and the second transmission belt is sleeved on the second and third pulleys.

[0014] In the optional technical solution of the above-mentioned clothes dryer, the first driving shaft, the transmission shaft and the central axis of the drying cylinder are parallel, the first driving shaft and the transmission shaft are arranged in the same horizontal plane, and the central axis of the drying cylinder is higher than the horizontal plane where the first driving shaft and the transmission shaft are located; the driving mechanism further comprises a limiting pulley between the first transmission belt and the fan mechanism, and the limiting pulley abuts against the outer side of the first transmission belt.

[0015] In the optional technical solution of the above-mentioned clothes dryer, the outer side of the fan mechanism is provided with an air duct in communication with the drying cylinder, and a heating wire is arranged on the air duct between the fan mechanism and the drying cylinder.

[0016] As can be understood by those skilled in the art, the clothes dryer of the present application comprises a drying cylinder, a driving motor and a fan mechanism, the driving motor is in driving connection with the transmission shaft of the fan mechanism and the drying cylinder respectively to drive the drying cylinder and the fan mechanism to rotate simultaneously; wherein the fan mechanism comprises a fan body, a planetary gear assembly and a transmission shaft. The planetary gear assembly comprises a planetary gear, a sun gear, an outer ring gear and a planet carrier, the planetary gear is rotatably installed on the planet carrier, and the planetary gear is in mesh with the outer ring gear and the sun gear respectively, the planet carrier and the outer ring gear are fixedly connected with the fan body, the planet carrier is provided with a first shaft hole, and the sun gear is provided with a second shaft hole coaxial with the first shaft hole; the transmission shaft is arranged in the first shaft hole and the second shaft hole, and a first one-way bearing is arranged between the transmission shaft and the first shaft hole, a second one-way bearing is arranged between the transmission shaft and the second shaft hole, and the locking directions of the second one-way bearing and the first one-way bearing are opposite; the transmission shaft is in driving connection with the driving motor.

[0017] Thus, when the driving motor drives the drying cylinder to rotate forward, the first one-way bearing is locked on the transmission shaft, and the transmission shaft drives the fan body and the planetary carrier to rotate forward through the first one-way bearing; at this time, the fan body drives the outer gear ring to rotate forward, and the outer gear ring drives the sun gear to rotate reversely through the planetary gear; since the second one-way bearing is movable relative to the transmission shaft, the sun gear does not affect the rotation of the transmission shaft. When the driving motor drives the drying cylinder to rotate reversely, the second one-way bearing is locked on the transmission shaft, and the transmission shaft drives the sun gear to rotate reversely through the second one-way bearing, and the sun gear drives the planetary gear to rotate forward, and the planetary gear drives the outer gear ring and the fan body to rotate forward; at this time, the planetary carrier fixedly connected with the fan body rotates forward, and since the first one-way bearing is movable relative to the transmission shaft, the planetary carrier does not affect the rotation of the transmission shaft.

[0018] Therefore, the drying cylinder and the fan mechanism are driven by the same motor, and the fan body rotates in the same direction, which is beneficial to improve the drying efficiency, and the use of one driving motor can reduce the size of the clothes dryer and reduce the cost. Moreover, the fan body rotates in the same direction through the planetary gear assembly and the one-way bearing, which is simple and compact, and is beneficial to further reduce the size of the clothes dryer and reduce the cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] The preferred embodiments of the fan mechanism and the clothes dryer of the present application will be described below with reference to the accompanying drawings. The drawings are as follows:

[0020] Figure 1 is a structural schematic view of the fan mechanism provided by the embodiments of the present application;

[0021] Figure 2 is an exploded view of the fan mechanism provided by the embodiments of the present application;

[0022] Figure 3 is a structural schematic view of the fan body, the planetary carrier and the outer gear ring provided by the embodiments of the present application;

[0023] Figure 4 is a front view of the fan body, the planetary carrier and the outer gear ring provided by the embodiments of the present application;

[0024] Figure 5 is Figure 4 A-A sectional view in the figure;

[0025] Figure 6 is a structural schematic view of the clothes dryer provided by the embodiments of the present application.

[0026] In the drawings: 100: fan mechanism; 110: transmission shaft; 120: planetary gear assembly; 121: planetary gear; 122: sun gear; 123: outer gear ring; 1231: inclined surface; 124: planet carrier; 1241: first shaft hole; 1242: first fixed plate; 1243: second fixed plate; 1244: connecting plate; 1245: rotating drum; 1246: first transition circular arc; 1247: second transition circular arc; 1248: circular hole; 125: rotating shaft; 130: fan body; 131: first mounting plate; 132: second mounting plate; 133: fan blade; 1331: first clamping piece; 1332: second clamping piece; 140: first one-way bearing; 150: second one-way bearing; 200: drying drum; 310: driving motor; 320: first transmission belt; 330: second transmission belt; 340: limiting pulley; 400: air duct; 410: heating wire; 500: housing. DETAILED DESCRIPTION

[0027] Firstly, it should be understood by those skilled in the art that the embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments as needed in order to adapt to specific application occasions. For example, although the fan mechanism of the embodiments of the present application is described in combination with a clothes dryer, this is not limiting, and other devices with fan use requirements can also be configured with the fan mechanism of the embodiments of the present application, such as a washing and drying integrated machine.

[0028] Secondly, it should be pointed out that in the description of the embodiments of the present application, the terms indicating the direction or positional relationship such as "inner" and "outer" are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0029] In addition, it should be pointed out that in the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "connected" and "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0030] The heat pump system of the heat pump clothes dryer comprises an evaporator, a condenser and a fan, which absorbs heat from the surroundings by the evaporator, and releases heat at the condenser, and the fan drives air circulation through the evaporator, the condenser and the drying cylinder. The air is cooled to become dry and cold air at the evaporator, the dry and cold air is heated to become dry and hot air at the condenser, the dry and hot air enters the drying cylinder to drive the moisture of clothes to become wet and hot air, and the wet and hot air is cooled to form a circulation path at the evaporator, thereby achieving the drying of clothes.

[0031] The fan is generally provided with two driving modes as the power source for driving air circulation, the first driving mode is that the clothes dryer is provided with two driving motors, one of which drives the drying cylinder to alternately rotate in the forward direction and the reverse direction, and the other of which drives the fan to rotate in one direction to discharge the air carrying water vapor in the drying cylinder to dry clothes. This driving mode has high clothes drying efficiency, but the clothes dryer has large size and high cost.

[0032] The second driving mode is that one driving motor is provided to simultaneously drive the drying cylinder and the fan to rotate, and the driving motor drives the drying cylinder to alternately rotate in the forward direction and the reverse direction, and simultaneously drives the fan to alternately rotate in the forward direction and the reverse direction, at this time, the fan alternately blows air into the drying cylinder and discharges air in the drying cylinder, which affects the drying efficiency of clothes.

[0033] Therefore, the clothes dryer provided by the embodiment of the present application simultaneously drives the drying cylinder and the fan mechanism by one motor, the fan mechanism comprises a fan body, a planetary gear assembly and a transmission shaft. The planetary gear assembly comprises a planetary gear, a sun gear, an outer gear ring and a planet carrier, the planetary gear is rotatably installed on the planet carrier, and the planetary gear is meshed with the outer gear ring and the sun gear, respectively, the planet carrier and the outer gear ring are fixedly connected with the fan body, the planet carrier is provided with a first shaft hole, and the sun gear is provided with a second shaft hole coaxial with the first shaft hole; the transmission shaft is arranged in the first shaft hole and the second shaft hole, and a first one-way bearing is arranged between the transmission shaft and the first shaft hole, a second one-way bearing is arranged between the transmission shaft and the second shaft hole, and the locking directions of the second one-way bearing and the first one-way bearing are opposite; and the transmission shaft is in transmission connection with the driving motor.

[0034] Thus, when the driving motor drives the drying cylinder to rotate forward, the first one-way bearing is locked on the transmission shaft, and the transmission shaft drives the fan body and the planet carrier to rotate forward through the first one-way bearing; at this time, the fan body drives the outer gear ring to rotate forward, and the outer gear ring drives the sun gear to rotate reversely through the planetary gear, and the sun gear does not affect the rotation of the transmission shaft because the second one-way bearing is movable relative to the transmission shaft. When the driving motor drives the drying cylinder to rotate reversely, the second one-way bearing is locked on the transmission shaft, and the transmission shaft drives the sun gear to rotate reversely through the second one-way bearing, and the sun gear drives the planetary gear to rotate forward, and the planetary gear drives the outer gear ring and the fan body to rotate forward; at this time, the planet carrier fixedly connected with the fan body rotates forward, and the planet carrier does not affect the rotation of the transmission shaft because the first one-way bearing is movable relative to the transmission shaft.

[0035] Therefore, the drying cylinder and the fan mechanism are driven by the same motor, the fan body rotates in the same direction, which is beneficial to improve the drying efficiency, and the use of one driving motor can reduce the size and cost of the clothes dryer. Moreover, the fan body rotates in the same direction through the planetary gear assembly and the one-way bearing, which is simple and compact, and is beneficial to further reduce the size and cost of the clothes dryer.

[0036] The preferred technical scheme of the fan mechanism and the clothes dryer provided by the present application is described below.

[0037] Figure 6 is a structural schematic diagram of the clothes dryer provided by the embodiment of the present application.

[0038] Referring to Figure 6 The clothes dryer provided by the embodiment of the present application comprises a driving mechanism, a drying cylinder 200 and a fan mechanism 100, wherein the drying cylinder 200 is a circular drum with an open front side, which can accommodate clothes, and the open front side is a clothes feeding port.

[0039] The clothes dryer further comprises a housing 500, and the drying cylinder 200, the driving mechanism and the fan mechanism 100 are all installed in the housing 500. A door body is hingedly connected to the housing 500, and the door body can open or close the clothes feeding port.

[0040] The driving mechanism is in driving connection with the drying cylinder 200 and the fan mechanism 100, drives the drying cylinder 200 to rotate to drive the clothes to rotate, and drives the fan mechanism 100 to rotate to blow dry hot air into the drying cylinder 200 and make the wet hot air discharged to the outside of the drying cylinder 200, so as to dry the clothes.

[0041] Figure 1 is a structural schematic diagram of the fan mechanism provided by the embodiment of the present application. Figure 2 is an exploded view of the fan mechanism provided by the embodiment of the present application.

[0042] In combination Figure 1 and Figure 2 , the fan mechanism 100 provided by the embodiment of the present application comprises a fan body 130, a planetary gear assembly 120 and a transmission shaft 110.

[0043] The planetary gear assembly 120 comprises a planetary gear 121, a sun gear 122, an outer ring gear 123 and a planet carrier 124, the planetary gear 121 is rotatably installed on the planet carrier 124, specifically, the planet carrier 124 is provided with a rotating shaft 125, the planetary gear 121 is rotatably installed on the rotating shaft 125, for example, a bearing is arranged between the planetary gear 121 and the rotating shaft 125, the bearing mentioned herein can be a tapered roller bearing, a bidirectional thrust bearing, etc., the planetary gear 121 can rotate relative to the rotating shaft 125. Moreover, the planetary gear 121 is engaged with the outer ring gear 123 and the sun gear 122 respectively.

[0044] The planet carrier 124 and the outer ring gear 123 are fixedly connected with the fan body 130, for example, the planet carrier 124 and the outer ring gear 123 are welded with the fan body 130 respectively; for another example, the outer ring gear 123 and the fan body 130 are an integral piece formed integrally. The planet carrier 124 is provided with a first shaft hole 1241, and the sun gear 122 is provided with a second shaft hole coaxial with the first shaft hole 1241.

[0045] The transmission shaft 110 is used for transmission connection with the driving motor, which can comprise a first shaft segment and a second shaft segment, the diameter of the first shaft segment is greater than that of the second shaft segment, the first shaft segment is used for installing a subsequent third belt wheel to realize transmission connection with the driving motor; the second shaft segment is used for installing a one-way bearing. The second shaft segment of the transmission shaft 110 is arranged in the first shaft hole 1241 and the second shaft hole, and a first one-way bearing 140 is arranged between the transmission shaft 110 and the first shaft hole 1241, a second one-way bearing 150 is arranged between the transmission shaft 110 and the second shaft hole, and the locking directions of the second one-way bearing 150 and the first one-way bearing 140 are opposite.

[0046] For example, referring to Figure 1 “S” represents the clockwise direction, and “N” represents the counterclockwise direction.

[0047] When the driving motor drives the drying cylinder 200 to rotate clockwise, referring to Figure 1The middle solid line indicates the direction of rotation of the transmission shaft 110 under the driving of the driving motor in the clockwise direction S; the first one-way bearing 140 is locked on the transmission shaft 110, and the transmission shaft 110 drives the planetary carrier 124 to rotate in the clockwise direction S through the first one-way bearing 140, and the fan body 130 fixedly connected with the planetary carrier 124 also rotates in the clockwise direction S. At this time, the fan body 130 drives the outer ring gear 123 to rotate in the clockwise direction S, and the outer ring gear 123 meshes with the planetary gear 121, driving the planetary gear 121 to rotate in the clockwise direction S; the planetary gear 121 meshes with the sun gear 122, driving the sun gear 122 to rotate in the counterclockwise direction N. Since the second one-way bearing 150 is movable relative to the transmission shaft 110, the sun gear 122 does not affect the rotation of the transmission shaft 110.

[0048] When the driving motor reverses to drive the drying cylinder 200 to rotate counterclockwise, referring to Figure 1 The middle solid line indicates the direction of rotation of the transmission shaft 110 under the driving of the driving motor in the clockwise direction S; the first one-way bearing 140 is locked on the transmission shaft 110, and the transmission shaft 110 drives the planetary carrier 124 to rotate in the clockwise direction S through the first one-way bearing 140, and the fan body 130 fixedly connected with the planetary carrier 124 also rotates in the clockwise direction S. At this time, the fan body 130 drives the outer ring gear 123 to rotate in the clockwise direction S, and the outer ring gear 123 meshes with the planetary gear 121, driving the planetary gear 121 to rotate in the clockwise direction S; the planetary gear 121 meshes with the sun gear 122, driving the sun gear 122 to rotate in the counterclockwise direction N. Since the second one-way bearing 150 is movable relative to the transmission shaft 110, the sun gear 122 does not affect the rotation of the transmission shaft 110.

[0049] Thus, the drying cylinder 200 and the fan mechanism 100 are driven by the same motor, and no matter the drying cylinder 200 rotates clockwise or counterclockwise, the fan body 130 rotates in the clockwise direction. Such an arrangement ensures that the air in the drying cylinder 200 flows in the same direction, which is conducive to improving the drying efficiency; using one driving motor can also reduce the size of the clothes dryer and reduce costs. Moreover, the fan body 130 is made to rotate in the same direction by the planetary gear assembly 120 and the one-way bearing, which is simple and compact in structure, and is conducive to further reducing the size of the clothes dryer and reducing costs.

[0050] It should be noted that in the clothes dryer, the rotation direction of the fan mechanism 100 is not limited to Figure 1 The middle solid line indicates the clockwise direction S, which can also rotate in the counterclockwise direction N, and those skilled in the art can set it according to the specific installation position of the fan mechanism 100, etc.

[0051] Figure 3is a structural schematic view of a fan body, a planet carrier and an outer gear ring provided by an embodiment of the present application; Figure 4 is a front view of a fan body, a planet carrier and an outer gear ring provided by an embodiment of the present application; Figure 5 is Figure 4 is a sectional view along A-A direction in

[0052] In combination with Figure 2 and Figure 3 The fan body 130 of the embodiment of the present application comprises a first mounting plate 131, a second mounting plate 132 and a plurality of fan blades 133. The first mounting plate 131 and the second mounting plate 132 are oppositely spaced along the axial direction of the transmission shaft 110, so that a mounting space for mounting the fan blades 133 is formed between the first mounting plate 131 and the second mounting plate 132. The first mounting plate 131 and the second mounting plate 132 are coaxially arranged as annular rings, the outer diameters of the first mounting plate 131 and the second mounting plate 132 are the same, the inner diameter of the first mounting plate 131 is smaller than the inner diameter of the second mounting plate 132, so that the radial width of the first mounting plate 131 is greater than the radial width of the second mounting plate 132, so that the first mounting plate 131 is conveniently fixedly connected with the outer gear ring 123, and the second mounting plate 132 can also avoid being too large to block the fan blades 133 and affect the air volume.

[0053] The plurality of fan blades 133 are fixed between the first mounting plate 131 and the second mounting plate 132, and the plurality of fan blades 133 are spaced along the circumferential direction of the first mounting plate 131. The embodiment of the present application does not limit the specific number of the fan blades 133. The fan blades 133 can be flat plate structures, which are radially inclinedly mounted relative to the first mounting plate 131; the fan blades 133 can be arc-shaped, and all the fan blades 133 protrude towards the same direction. Of course, the fan blades 133 can also be irregularly shaped.

[0054] The two ends of the fan blades 133 are fixedly connected with the first mounting plate 131 and the second mounting plate 132, for example, the two ends of the fan blades 133 are connected with the first mounting plate 131 and the second mounting plate 132 through screws; for another example, the two ends of the fan blades 133 are clamped with the first mounting plate 131 and the second mounting plate 132. Of course, the connection modes of the two ends of the fan blades 133 with the first mounting plate 131 and the second mounting plate 132 can be the same or different, for example, one end of the fan blades 133 is connected with the first mounting plate 131 through a screw, and the other end of the fan blades 133 is clamped with the second mounting plate 132.

[0055] Optionally, the first mounting plate 131 is provided with a first opening, and the second mounting plate 132 is provided with a second opening. The two ends of the fan blade 133 are respectively provided with a first clamping piece 1331 and a second clamping piece 1332. The first clamping piece 1331 is clamped into the first opening, then bent and abuts against the first mounting plate 131. The second clamping piece 1332 is clamped into the second opening, then bent and abuts against the second mounting plate 132. In this way, the assembly is simple and convenient. Optionally, the end of the first clamping piece 1331 and the end of the second clamping piece 1332 can be semicircular, facilitating clamping into the opening.

[0056] In the embodiment, the outer ring gear 123 is fixedly connected with the first mounting plate 131, and the outer ring gear 123 is fixedly connected with the planet carrier 124, so that the planet carrier 124 is fixedly connected with the fan body 130. Optionally, the outer ring gear 123 and the first mounting plate 131 are an integral one-piece formed integrally, and the structure is stable. In the embodiment, the outer ring gear 123 is connected with the first mounting plate 131, and the planet carrier 124 is fixedly connected with the fan body 130 through the outer ring gear 123, so as to avoid that the outer ring gear 123 and the planet carrier 124 block the fan blade 133 and affect the air volume.

[0057] In combination Figure 3 and Figure 5 , the side of the outer ring gear 123 facing the second mounting plate 132 is provided with an inclined surface 1231 avoiding the fan blade 133, and the inclined surface 1231 is inclined toward the center of the outer ring gear 123. In this way, the outer diameter of one end of the outer ring gear 123 close to the first mounting plate 131 is large, and the outer diameter of the other end connected with the planet carrier 124 is small. In this way, the outer ring gear 123 avoids the fan blade 133, and provides a large enough air port for the fan body 130, which is beneficial to improve the air volume.

[0058] In combination Figure 5 , the planet carrier 124 of the embodiment includes a first fixed plate 1242, a second fixed plate 1243, a connecting plate 1244 and a rotating cylinder 1245. The first fixed plate 1242 and the second fixed plate 1243 are oppositely and spaced apart along the axial direction of the transmission shaft 110, and both the first fixed plate 1242 and the second fixed plate 1243 are circular plates. The diameter of the second fixed plate 1243 is smaller than the diameter of the first fixed plate 1242. The first end of the connecting plate 1244 is fixedly connected with the first fixed plate 1242, and the second end of the connecting plate 1244 is connected with the second fixed plate 1243. In this way, the first fixed plate 1242, the second fixed plate 1243 and the connecting plate 1244 form a circular truncated cone structure. Optionally, a second transition arc 1247 is arranged at the connection between the connecting plate 1244 and the second fixed plate 1243, so as to avoid stress concentration and improve the structural strength and stability of the planet carrier 124.

[0059] In combination Figure 5The inclination angle of the connecting plate 1244 relative to the central axis of the rotating drum 1245 is greater than the inclination angle of the inclined surface 1231 of the outer gear ring 123 relative to the central axis of the rotating drum 1245. In this way, the air outlet of the fan body 130 can be further increased, and the air volume of the fan mechanism 100 can be improved.

[0060] In addition, the first end of the connecting plate 1244 is fixedly connected with the outer gear ring 123, so as to realize the fixed connection between the planet carrier 124 and the outer gear ring 123. Optionally, a first transition arc 1246 is arranged at the connection position of the connecting plate 1244 and the outer gear ring 123, so as to avoid stress concentration and improve the stability of the connection between the outer gear ring 123 and the connecting plate 1244.

[0061] The rotating drum 1245 is provided with a first shaft hole 1241, and the rotating drum 1245 is installed between the first fixed plate 1242 and the second fixed plate 1243. The first fixed plate 1242 is provided with a circular hole 1248 coaxial with the first shaft hole 1241. In this way, the transmission shaft 110 is installed with the first one-way bearing 140 between the circular hole 1248 and the first shaft hole 1241.

[0062] Continuing to refer to Figure 4 and Figure 5 The first fixed plate 1242 is provided with a rotating shaft 125 for installing the planetary gear 121. For example, the rotating shaft 125 is welded on the first fixed plate 1242, and the rotating shaft 125 is fixed relative to the first fixed plate 1242.

[0063] Optionally, the first fixed plate 1242 is provided with a plurality of rotating shafts 125, and the plurality of rotating shafts 125 are uniformly and spacedly arranged along the circumference of the first fixed plate 1242. One planetary gear 121 is rotatably installed on each rotating shaft 125. For example, three rotating shafts 125 are uniformly and spacedly arranged along the circumference of the first fixed plate 1242, and the angle between the central axes of the three rotating shafts 125 is 120 degrees. One planetary gear 121 is installed on each rotating shaft 125, and the three planetary gears 121 are engaged with the sun gear 122 and the outer gear ring 123. In this way, the stability of the motion transmission between the sun gear 122 and the outer gear ring 123 can be improved.

[0064] Continuing to refer to Figure 6The driving mechanism of the clothes dryer provided by the embodiment of the present application comprises a driving motor 310, a first transmission belt 320 and a second transmission belt 330. The driving motor 310 is provided with coaxial first and second driving shafts. The first driving shaft is fixed with a first pulley. The first transmission belt 320 is sleeved on the first pulley and the drying cylinder 200. Thus, the driving motor drives the drying cylinder 200 to rotate through the first transmission belt 320. Optionally, the drying cylinder 200 can be provided with a transmission structure, such as a transmission bracket, matched with the first transmission belt 320. The second driving shaft is fixed with a second pulley. The transmission shaft 110 of the fan mechanism 100 is fixed with a third pulley. The second transmission belt 330 is sleeved on the second pulley and the third pulley. Thus, the driving motor drives the transmission shaft 110 to rotate through the second transmission belt 330. Optionally, the size of the third pulley is smaller than that of the first and second pulleys. In this way, under the condition that the driving motor 310 outputs the same rotating speed, the rotating speed of the transmission shaft 110 of the fan mechanism 100 is faster, which is beneficial to increasing the air supply of the clothes dryer. Optionally, the first and second driving shafts are respectively located at the front side and the rear side of the driving motor 310, which facilitates the arrangement of the first and second transmission belts 320 and 330.

[0065] The central axes of the first driving shaft, the transmission shaft 110 and the drying cylinder 200 are parallel. The projections of the central axes of the first driving shaft, the transmission shaft 110 and the drying cylinder 200 on the rear side wall of the shell 500 are arranged in a triangular shape. That is to say, the first driving shaft and the transmission shaft 110 are arranged in different axes, the first driving shaft and the drying cylinder 200 are arranged in different axes, and the transmission shaft 110 and the drying cylinder 200 are arranged in different axes. Specifically, the first driving shaft and the transmission shaft 110 are arranged in the same horizontal plane. The central axis of the drying cylinder 200 is higher than the horizontal plane where the first driving shaft and the transmission shaft 110 are located. In short, the drying cylinder 200 is arranged above the driving motor 310 and the fan mechanism 100. The driving motor 310 is arranged below and left of the drying cylinder 200. The fan mechanism 100 is arranged below and right of the drying cylinder 200. In this way, the space below the drying cylinder 200 can be fully utilized, which is beneficial to reducing the volume of the clothes dryer. Moreover, the fan mechanism 100 is arranged in different axes with the driving motor and the drying cylinder 200, which is beneficial to arranging the air duct and increasing the air volume of the fan mechanism 100.

[0066] The driving mechanism of the embodiment of the present application further comprises a limiting pulley 340 located between the first transmission belt 320 and the fan mechanism 100. The limiting pulley 340 abuts against the outer side of the first transmission belt 320, so that the first transmission belt 320 is bent towards the other side thereof, thereby avoiding the fan mechanism 100 and the air duct 400.

[0067] The drying machine of the embodiment of the present application is provided with an air duct 400 in communication with the drying cylinder 200 outside the fan mechanism 100, for introducing dry hot air into the drying cylinder 200. Furthermore, the air duct 400 between the fan mechanism 100 and the drying cylinder 200 is provided with heating wires 410, further improving the temperature of the air blown into the drying cylinder 200, improving the efficiency of drying clothes. Wherein the heating wires 410 can be single-row heating wires or double-row heating wires, which are not limited here. The heating wires 410 are also provided with fireproof guards, improving the safety of the drying machine.

[0068] Optionally, a temperature sensor is arranged at the air inlet of the drying cylinder 200 in communication with the air duct 400, to measure the temperature of the air at the air inlet of the drying cylinder 200 in real time. Of course, the temperature sensor can also be installed at the air outlet of the drying cylinder 200. The air outlet of the drying cylinder 200 is provided with a humidity sensor to measure the humidity of the air discharged from the drying cylinder 200 in real time. Of course, the drying machine of the embodiment can also include a controller and a heat pump system, and the controller is electrically connected with the heat pump system, the humidity sensor, the temperature sensor and the heating wires 410.

[0069] In some control methods of the drying machine, the drying machine is started, and the heat pump system and the heating wires 410 work simultaneously. When the controller receives that the temperature detected by the temperature sensor does not reach T1, the heat pump system and the heating wires 410 are controlled to work simultaneously; when the controller receives that the temperature detected by the temperature sensor reaches T1, the heating wires are controlled to be turned off, and the heat pump system continues to work, and the temperature of the drying cylinder 200 is maintained within T1±3℃. When the temperature at the air inlet of the drying cylinder 200 is lower than T2, the heat pump system and the heating wires 410 are controlled to work simultaneously; when the temperature at the air inlet of the drying cylinder 200 is higher than T2, the controller judges whether the humidity at the air outlet of the drying cylinder 200 is within the preset RH range. If the preset RH range is reached, it means that the clothes drying is completed, and the controller controls the drying machine to stop; if the preset RH range is not reached, the heat pump system continues to work. Wherein T2=T1-5℃; RH is the relative humidity (Relative Humidity), which represents the ratio of the absolute humidity in the air to the saturated absolute humidity under the same temperature and pressure, and the result is a percentage, for example, 20% RH.

[0070] It should be noted that the specific values of T1, T2 and RH in the embodiment of the present application are not limited, which can be different according to different drying modes and can be different according to different settings of the user.

[0071] The technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical schemes after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A fan mechanism, characterized in that, include: Drive shaft, planetary gear assembly, and fan body; The planetary gear assembly includes planetary gears, a sun gear, an external gear ring, and a planet carrier. The planetary gears are rotatably mounted on the planet carrier and mesh with the external gear ring and the sun gear respectively. The planet carrier and the external gear ring are fixedly connected to the fan body respectively. The planet carrier is provided with a first shaft hole, and the sun gear is provided with a second shaft hole coaxial with the first shaft hole. The drive shaft passes through the first shaft hole and the second shaft hole, and a first one-way bearing is provided between the drive shaft and the first shaft hole, and a second one-way bearing is provided between the drive shaft and the second shaft hole. The locking directions of the second one-way bearing and the first one-way bearing are opposite. The drive shaft is used to drive the drive motor so that when the drive motor is in the forward and reverse rotation state, the fan body rotates in the clockwise direction.

2. The fan mechanism according to claim 1, characterized in that, The fan body includes a first mounting plate, a second mounting plate, and a plurality of fan blades. The first mounting plate and the second mounting plate are both annular and are spaced apart relative to each other along the axial direction of the transmission shaft. The plurality of fan blades are fixed between the first mounting plate and the second mounting plate and are spaced apart along the circumferential direction of the first mounting plate. The external gear ring is fixedly connected to the first mounting plate, and the external gear ring is fixedly connected to the planetary carrier.

3. The fan mechanism according to claim 2, characterized in that, The outer gear ring has an inclined surface on the side facing the second mounting plate to avoid the fan blade, and the inclined surface is inclined toward the center of the outer gear ring.

4. The fan mechanism according to claim 2, characterized in that, The planetary carrier includes a first fixed plate, a second fixed plate, a connecting plate, and a rotating cylinder. The first fixed plate and the second fixed plate are arranged at intervals relative to each other along the axial direction of the transmission shaft, and both the first fixed plate and the second fixed plate are circular plates. The diameter of the second fixed plate is smaller than the diameter of the first fixed plate. The first end of the connecting plate is fixedly connected to the first fixed plate and the external gear ring, and the second end of the connecting plate is connected to the second fixed plate. The rotating cylinder is provided with the first shaft hole, and the rotating cylinder is installed between the first fixed plate and the second fixed plate. The first fixed plate is provided with a circular hole coaxial with the first shaft hole. The first fixed plate is provided with a rotating shaft for mounting the planetary gear.

5. The fan mechanism according to claim 4, characterized in that, A first transition arc is provided at the connection between the connecting plate and the external gear ring, and a second transition arc is provided at the connection between the connecting plate and the second fixing plate.

6. The fan mechanism according to claim 4, characterized in that, The first fixed plate is provided with a plurality of rotating shafts, which are evenly spaced along the circumference of the first fixed plate, and each rotating shaft is rotatably mounted with a planetary gear.

7. The fan mechanism according to claim 2, characterized in that, The first mounting plate has a first opening, and the second mounting plate has a second opening; The fan blades are arc-shaped, and all the fan blades protrude in the same direction; a first card and a second card are respectively provided at both ends of the fan blades. The first card is inserted into the first opening and then bent to abut against the first mounting plate. The second card is inserted into the second opening and then bent to abut against the second mounting plate.

8. A clothes dryer, characterized in that, include: The drive mechanism, the drying cylinder, and the fan mechanism according to any one of claims 1-7; The drive mechanism includes a drive motor, a first transmission belt, and a second transmission belt. The drive motor is provided with a first drive shaft and a second drive shaft on the same axis. A first pulley is fixed on the first drive shaft, and the first transmission belt is sleeved on the first pulley and the drying cylinder. A second pulley is fixed on the second drive shaft, and a third pulley is fixed on the drive shaft of the fan mechanism. The second transmission belt is sleeved on the second pulley and the third pulley.

9. The clothes dryer according to claim 8, characterized in that, The central axes of the first drive shaft, the transmission shaft, and the drying cylinder are parallel. The first drive shaft and the transmission shaft are arranged at intervals in the same horizontal plane, and the central axis of the drying cylinder is higher than the horizontal plane in which the first drive shaft and the transmission shaft are located. The drive mechanism further includes a limiting pulley located between the first transmission belt and the fan mechanism, the limiting pulley abutting against the outer side of the first transmission belt.

10. The clothes dryer according to claim 8, characterized in that, An air duct communicating with the drying cylinder is provided on the outside of the fan mechanism, and a heating wire is provided on the air duct between the fan mechanism and the drying cylinder.

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