clothes dryer

Abstract

This invention belongs to the field of dryer technology, specifically providing a dryer. The invention aims to solve the problems of clothes tangling, drum not rotating in equal time, long drying time, uneven drying, and low drying efficiency. To this end, the dryer of this invention includes a drum, a fan, a one-way drive device, and a planetary gear reversing mechanism. One end of the one-way drive device is connected to the fan. The planetary gear reversing mechanism includes a sun gear and a ring gear connected to the drum and axially spaced apart, a position switching mechanism connected to the other end of the one-way drive device, and planetary gears operatively connected to the position switching mechanism. The position switching mechanism drives the planetary gears to move between a first position engaged with the ring gear and a second position engaged with the sun gear. When the one-way drive device drives the fan to rotate in one direction, the planetary gears can drive the drum to rotate in different directions. The dryer of this invention features drum rotating in equal time, short drying time, uniform drying, high drying efficiency, and prevents clothes from tangling.

Description

Technical Field

[0001] This invention belongs to the field of dryer technology, specifically providing a dryer that uses a planetary gear structure to achieve forward and reverse rotation of the drum and unidirectional rotation of the fan. Background Technology

[0002] Existing dryers use a combination of a drum, fan, and motor to dry clothes. This can lead to clothes tangling, and the tangled parts are difficult to dry effectively. To solve this problem, a motor-driven centrifugal fan is used to enable the drum to rotate in both directions. This function can solve the tangling problem to some extent, but it cannot completely solve it. It also introduces other new problems, namely, the different airflow from the forward and reverse fans, resulting in unequal rotation of the drum. However, to solve the problem of the drum not rotating in equal time, the drum and fan are often driven separately, which drastically increases the cost. Therefore, due to the limitations of the technology, the problems of clothes tangling, drum not rotating in equal time, long drying time, low drying uniformity and efficiency, and high overall cost cannot be completely solved.

[0003] Accordingly, there is a need in the art for a clothes dryer to solve the problems of clothes tangling, drums not being able to rotate in the same direction at equal times, long drying time, uneven drying, low drying efficiency, and high overall manufacturing cost in the prior art. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problems of clothes tangling, drums not being able to rotate in the same direction at the same time, long drying time, uneven drying, low drying efficiency, and high overall manufacturing cost of existing dryers.

[0005] In a first aspect, the present invention provides a clothes dryer comprising a drum, a fan, and a one-way drive device, one end of the one-way drive device being connected to the fan;

[0006] The dryer also includes a planetary gear reversing mechanism, which includes a sun gear and a ring gear that are axially spaced apart from the roller drive, a position switching mechanism that is fixedly connected to the other end of the unidirectional drive device, and planetary gears that are operatively connected to the position switching mechanism.

[0007] The position switching mechanism is configured to drive the planetary gears to move between a first position engaging with the ring gear and a second position engaging with the sun gear, so that when the unidirectional drive device drives the fan to rotate in one direction, the planetary gears can drive the drum to rotate in different directions.

[0008] In the preferred embodiment of the above-mentioned dryer, the position switching mechanism is an axial movement mechanism, and the first position and the second position are two axial positions corresponding to the gear ring and the sun gear, respectively.

[0009] In the preferred technical solution of the above-mentioned dryer, the unidirectional drive device is a unidirectional motor, which includes a first output shaft and a second output shaft. The first output shaft is connected to the fan, and the second output shaft is provided with a sliding groove. The planetary gear is sleeved on the second output shaft and can move between the first position and the second position along the sliding groove under the action of the axial moving mechanism.

[0010] In the preferred technical solution of the above-mentioned dryer, the axial movement mechanism is an electromagnetic switch assembly, which includes an electromagnetic switch and a telescopic spring. The telescopic spring is sleeved on the second output shaft, with one end of the telescopic spring connected to the electromagnetic switch and the other end connected to the planetary gear.

[0011] The telescopic spring is configured to hold the planetary gear in the first position in the relaxed state, and when the electromagnetic switch is activated, the telescopic spring is compressed and thus moves the planetary gear to the second position.

[0012] In the preferred technical solution of the above-mentioned dryer, the axial movement mechanism is an electromagnetic switch assembly, which includes an electromagnetic switch and a telescopic spring. The telescopic spring is sleeved on the second output shaft, with one end of the telescopic spring connected to the electromagnetic switch and the other end connected to the planetary gear.

[0013] The telescopic spring is configured to hold the planetary gear in the second position in the relaxed state, and when the electromagnetic switch is activated, the telescopic spring is stretched and thus moves the planetary gear to the first position.

[0014] In the preferred embodiment of the above-mentioned dryer, the electromagnetic switch is sleeved on the second output shaft and rotates together with the second output shaft.

[0015] In the preferred technical solution of the above-mentioned dryer, the axial movement mechanism is a hydraulic cylinder assembly, which includes a hydraulic cylinder and a telescopic spring. The telescopic spring is sleeved on the second output shaft, with one end connected to the hydraulic cylinder and the other end connected to the planetary gear.

[0016] The telescopic spring is configured to hold the planetary gear in the first position in the relaxed state, and when the hydraulic cylinder is activated, the telescopic spring is compressed and thus moves the planetary gear to the second position.

[0017] In the preferred technical solution of the above-mentioned dryer, the axial movement mechanism is a hydraulic cylinder assembly, which includes a hydraulic cylinder and a telescopic spring. The telescopic spring is sleeved on the second output shaft, with one end connected to the hydraulic cylinder and the other end connected to the planetary gear.

[0018] The telescopic spring is configured to hold the planetary gear in the second position in the relaxed state, and when the hydraulic cylinder is activated, the telescopic spring is stretched and thus moves the planetary gear to the first position.

[0019] In the preferred embodiment of the above-mentioned dryer, the hydraulic cylinder is mounted on the fixed structure of the dryer.

[0020] In the preferred embodiment of the above-mentioned dryer, the fan is a centrifugal fan.

[0021] Those skilled in the art will understand that the dryer of the present invention includes a drum, a fan, a one-way drive device, and a planetary gear reversing mechanism. One end of the one-way drive device is connected to the fan. The planetary gear reversing mechanism includes a sun gear and a ring gear that are axially spaced and driven by the drum, a position switching mechanism fixedly connected to the other end of the one-way drive device, and planetary gears operatively connected to the position switching mechanism. When the position switching mechanism drives the planetary gears operatively connected to it to a first position where they mesh with the ring gear, and the one-way drive device drives the fan to rotate in a first direction, the planetary gears drive the drum to rotate in the first direction. When the position switching mechanism drives the planetary gears operatively connected to it to a second position where they mesh with the sun gear, and the one-way drive device drives the fan to rotate in the first direction, the planetary gears drive the drum to rotate in a second direction opposite to the first direction.

[0022] With the above-described configuration, the dryer of this invention enables the unidirectional drive device to drive the fan to rotate in one direction, while the planetary gears operably connected to the position switching mechanism can drive the drum to rotate in different directions. Because the fan is driven by a unidirectional drive device, its rotation direction remains constant, achieving higher air pressure and airflow, thus ensuring the overall performance of the dryer. The position switching mechanism, through its operably connected planetary gears, drives the drum to rotate in different directions, achieving simultaneous forward and reverse rotation of the drum. Simultaneously, the fan's airflow remains identical during the drum's forward and reverse rotation, completely solving the problem of clothes tangling in the dryer, shortening drying time, and improving drying uniformity and efficiency. Furthermore, because a unidirectional drive device, such as a unidirectional motor, is used, its low cost significantly reduces the overall manufacturing cost of the machine. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the dryer drive system of the present invention;

[0024] Figure 2 This is a schematic diagram of the dryer drive system of the present invention in its naturally extended state using a telescopic spring.

[0025] Figure 3 This is a schematic diagram of the dryer drive system of the present invention after the electromagnetic switch is activated and the telescopic spring is compressed.

[0026] List of reference numerals in the attached diagram:

[0027] 1-Drum drive wheel, 2-Fan, 3-One-way drive device, 4-Planetary gear reversing mechanism, 31-One-way motor, 32-First output shaft, 33-Second output shaft, 41-Sun gear, 42-Ring gear, 43-Position switching structure, 44-Planetary gear, 45-First position, 46-Second position, 431-Electromagnetic switch, 432-Telescopic spring. Detailed Implementation

[0028] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely illustrative of the technical principles of the invention and are not intended to limit the scope of protection of the invention. Those skilled in the art can make adjustments as needed to adapt to specific applications. For example, although the axial movement mechanism in this invention is described as an electromagnetic switch assembly, it is obvious that the invention can employ various other components, as long as the axial movement mechanism can control the movement of the planetary gears under different conditions; such changes do not depart from the principles and scope of the invention.

[0029] It should be noted that in the description of this invention, terms such as "left" and "right" indicating direction or positional relationships are based on the direction or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] As described in the background section, existing dryers use a drum, fan, and motor to dry clothes. This can lead to clothes tangling, and the tangled parts are difficult to dry effectively. To solve the tangling problem, a motor-driven centrifugal fan is used to enable the drum to rotate in both directions. This function can solve the tangling problem to some extent, but it cannot completely solve it. It also creates other new problems, namely, the air volume of the forward and reverse fans is different, resulting in the drum rotating in different directions at different times. However, to solve the problem of the drum not rotating in the same direction at the same time, the drum and fan are often driven separately, which will cause the cost to increase dramatically. Therefore, due to the defects in the technical implementation, the problems of clothes tangling, drum not rotating in the same direction at the same time, long drying time, low drying uniformity and efficiency, and high overall machine cost cannot be completely solved.

[0032] To address the aforementioned problems, this invention provides a clothes dryer comprising a drum, a fan, a one-way drive unit, and a planetary gear reversing mechanism. One end of the one-way drive unit is connected to the fan. The planetary gear reversing mechanism includes a sun gear and a ring gear connected to the drum and axially spaced apart, a position switching mechanism connected to the other end of the one-way drive unit, and planetary gears connected to the position switching mechanism. The position switching mechanism drives the planetary gears to move between a first position engaged with the ring gear and a second position engaged with the sun gear. When the one-way drive unit drives the fan to rotate in one direction, the planetary gears can drive the drum to rotate in different directions. This invention solves the problems of clothes tangling, drum inability to rotate in both directions at equal times, long drying time, uneven drying, low drying efficiency, and high overall manufacturing cost in the prior art.

[0033] The following reference Figure 1 The dryer of the present invention will be described herein. Figure 1 This is a schematic diagram of the dryer drive system of the present invention.

[0034] like Figure 1 As shown, the dryer of the present invention includes a drum (not shown in the figure, indicated by the drum drive wheel 1), a fan 2 and a one-way drive device 3, wherein one end of the one-way drive device 3 is connected to the fan 2.

[0035] Furthermore, the dryer also includes a planetary gear reversing mechanism 4, which includes a sun gear 41 and a ring gear 42 that are driven and axially spaced from the drum drive wheel 1, a position switching mechanism 43 that is fixedly connected to the other end of the one-way drive device 3, and a planetary gear 44 that is operatively connected to the position switching mechanism 43.

[0036] Furthermore, the position switching mechanism 43 is configured to drive the planetary gear 44 to move between a first position 45 engaging with the ring gear 42 and a second position 46 engaging with the sun gear 41. When the unidirectional drive device 3 drives the fan 2 to rotate in one direction, the planetary gear 44 can drive the roller drive wheel 1 to rotate in different directions.

[0037] Specifically, when the one-way drive device 3 drives the fan 2 to rotate in one direction and the position switching mechanism 43 drives the planetary gear 44 to the first position 45 that meshes with the gear ring 42, the planetary gear 44 drives the roller drive wheel 1 (and thus drives the roller) to rotate in the first direction; when the one-way drive device 3 drives the fan 2 to rotate in one direction and the position switching mechanism 43 drives the planetary gear 44 to the second position 46 that meshes with the sun gear 41, the planetary gear 44 drives the roller drive wheel 1 to rotate in the second direction opposite to the first direction.

[0038] The advantages of the above configuration are as follows: Using a unidirectional drive device 3 to drive the fan 2 ensures that the fan 2 always rotates in one direction. Because the rotation direction of the fan 2 remains constant, the dryer can achieve higher air pressure and airflow, greatly improving its performance. Simultaneously, the unidirectional drive device 3 also drives the planetary gear reversing mechanism 4, causing it to move the planetary gear 44 between the first position 45 (meshing with the gear ring 42) and the second position 46 (meshing with the sun gear 41). This allows the planetary gear 44 to drive the drum drive wheel 1 in different directions, achieving isochronous forward and reverse rotation of the drum drive wheel 1. Furthermore, since the airflow direction and volume of the fan 2 remain completely consistent during the forward and reverse rotation of the drum drive wheel 1, the problem of clothes tangling in the dryer is completely solved. Because the clothes do not tangle, the uniformity of drying, drying efficiency, and drying time are improved. Moreover, using a single unidirectional drive device 3 to simultaneously drive the fan 2 and the planetary gear reversing mechanism 4 also saves costs, significantly reducing the manufacturing cost of the dryer.

[0039] about Figure 1 It should be noted that although what is shown is the left side of the gear ring 42 and the sun gear 41 (according to...) Figure 1 The gear ring 42 and the left side of the sun gear 41 are connected to the roller drive wheel 1. To drive the roller to rotate, a belt drive is required. However, this is not a limitation. Depending on the specific application scenario, those skilled in the art can also directly connect the gear ring 42 and the left side of the sun gear 41 to the roller. This adjustment does not deviate from the basic principle of the present invention and therefore will also fall within the protection scope of the present invention.

[0040] Below Figure 1 Based on reference Figure 2 , Figure 3 The dryer drive system of the present invention will be described in detail. Figure 2 This is a schematic diagram of the dryer drive system of the present invention in the naturally extended state of the telescopic spring; Figure 3 This is a schematic diagram of the dryer drive system of the present invention after the electromagnetic switch is activated and the telescopic spring is compressed.

[0041] like Figure 1 , Figure 2 , Figure 3 As shown, in one possible implementation, the position switching mechanism 43 is configured as an axial movement mechanism. The axial position of the gear ring 42 is the first position 45, and the axial position of the sun gear 41 is the second position 46. The one-way drive device 3 is a one-way motor 31, which includes a first output shaft 32 and a second output shaft 33. The first output shaft 32 is connected to the fan 2, and an axial groove (not shown in the figure) is provided on the second output shaft 33. The planetary gear 44 is sleeved on the second output shaft 33 and can move left and right between the first position 45 and the second position 46 under the action of the axial movement mechanism.

[0042] Furthermore, in one possible implementation, fan 2 is a centrifugal fan, but it could also be other fans, such as axial fans, cross-flow fans, etc.

[0043] Specifically, in one embodiment, the axial movement mechanism uses an electromagnetic switch assembly, which includes an electromagnetic switch 431 and a telescopic spring 432. The electromagnetic switch 431 and the telescopic spring 432 are sleeved on the second output shaft 33, with one end of the telescopic spring 432 connected to the electromagnetic switch 431 and the other end connected to the planetary gear 44. At the same time, the electromagnetic switch 431 is fixed relative to the second output shaft 33 and rotates with the second output shaft 33. In the assembled state, when the telescopic spring 432 is in the relaxed state, the planetary gear 44 is in the first position 45 and meshes with the gear ring 42. The unidirectional motor 31 drives the fan 2 to rotate in the first direction, and the planetary gear 44 drives the roller drive wheel 1 to rotate in the first direction. When the electromagnetic switch 431 is activated, the planetary gear 44 is attracted to the right, the telescopic spring 432 is compressed, and thus the planetary gear 44 moves to the second position 46 and meshes with the sun gear 41. The unidirectional motor 31 drives the fan 2 to rotate in the first direction, and the planetary gear 44 drives the roller drive wheel 1 to rotate in the second direction opposite to the first direction.

[0044] Regarding the electromagnetic switch assembly, it should be noted that, although Figure 2 , Figure 3The illustration shows an assembly including an electromagnetic switch 431 and a telescopic spring 432. In the assembled state, when the telescopic spring 432 is in the relaxed state, the planetary gear 44 is in the first position 45 and meshes with the gear ring 42. The unidirectional motor 31 drives the fan 2 to rotate in the first direction, and the planetary gear 44 drives the roller drive wheel 1 to rotate in the first direction. When the electromagnetic switch 431 is activated, the planetary gear 44 is attracted to the right, the telescopic spring 432 is compressed, and thus the planetary gear 44 moves to the second position 46 and meshes with the sun gear 41. The unidirectional motor 31 drives the fan 2 to rotate in the first direction, and the planetary gear 44 drives the roller drive wheel 1 to rotate in the second direction opposite to the first direction. However, this is merely exemplary and should not constitute any limitation on the scope of protection of the present invention. Those skilled in the art can make adjustments without departing from the principles of the present invention. For example, in the assembled state, when the telescopic spring 432 is in the relaxed state, the planetary gear 44 is in the second position 46 and meshes with the sun gear 41. The unidirectional motor 31 drives the fan 2 to rotate in the first direction, and the planetary gear 44 drives the roller drive wheel 1 to rotate in the second direction opposite to the first direction. When the electromagnetic switch 431 is activated, the planetary gear 44 is repelled to the left, the telescopic spring 432 is stretched, and thus the planetary gear 44 moves to the first position 45 and meshes with the gear ring 42. The unidirectional motor 31 drives the fan 2 to rotate in the first direction, and the planetary gear 44 drives the roller drive wheel 1 to rotate in the first direction.

[0045] The advantages of the above configuration are as follows: First, the second output shaft 33 is provided with a sliding groove, which allows the planetary wheel 44 to slide flexibly in the first position 45 and the second position 46 under the control of the electromagnetic switch assembly without damaging the second output shaft 33, thus increasing the service life of the second output shaft 33 and improving the quality of the dryer. Second, by using the connection method of the planetary wheel 44 meshing with the gear ring 42 or the sun gear 41, there is little friction and wear between them, resulting in a long service life. The structure is simple and compact, and the operating intensity is also high, which improves the strength of the dryer in handling clothes, thus improving the quality of the dryer. Finally, the unidirectional drive device 3 uses a unidirectional motor 31, which simultaneously drives the fan 2 to rotate in the first direction through the first output shaft 32, and drives the drum drive wheel 1 to rotate in the first direction and the opposite direction through the axial movement mechanism via the second output shaft 33. Under the same air volume and intensity of the fan 2, the drum drive wheel 1 also achieves equal forward and reverse rotation, solving the problems of clothes tangling, uneven drying, and low drying efficiency, and improving the user experience.

[0046] The second embodiment of the dryer drive system of the present invention will now be described. The difference between this second embodiment and the first embodiment is that the axial movement mechanism uses a hydraulic cylinder assembly (shown in the figure).

[0047] Specifically, the axial movement mechanism uses a hydraulic cylinder assembly, which includes a hydraulic cylinder and a telescopic spring. The hydraulic cylinder is fixed to the fixed structure of the dryer—for example, the housing—and positioned near the second output shaft 33. The telescopic spring is sleeved on the second output shaft 33, with one end connected to the hydraulic cylinder and the other end connected to the planetary gear 44. In the assembled state, when the telescopic spring is in the relaxed state, the planetary gear 44 is in the first position 45 and meshes with the gear ring 42. The one-way motor 31 drives the fan 2 to rotate in the first direction, and the planetary gear 44 drives the roller drive wheel 1 to rotate in the first direction. When the hydraulic cylinder is activated, the telescopic spring is compressed, thus moving the planetary gear 44 to the second position and meshing with the sun gear 41. At this time, the output shaft of the hydraulic cylinder needs to disengage from the planetary gear 44. The one-way motor 31 drives the fan 2 to rotate in the first direction, and the planetary gear 44 drives the roller drive wheel 1 to rotate in the second direction opposite to the first direction.

[0048] Regarding the hydraulic cylinder assembly, it should be noted that although the embodiment describes it as including a hydraulic cylinder and a telescopic spring, in the assembled state, when the telescopic spring is in the relaxed state, the planetary gear 44 is in the first position 45 and meshes with the gear ring 42, the one-way motor 31 drives the fan 2 to rotate in the first direction, and the planetary gear 44 drives the roller drive wheel 1 to rotate in the first direction; when the hydraulic cylinder is started, the telescopic spring is compressed, thus causing the planetary gear 44 to move to the second position and mesh with the sun gear 41. At this time, the output shaft of the hydraulic cylinder needs to disengage from the planetary gear 44, the one-way motor 31 drives the fan 2 to rotate in the first direction, and the planetary gear 44 drives the roller drive wheel 1 to rotate in the second direction opposite to the first direction. However, this is merely exemplary and should not constitute any limitation on the scope of protection of the present invention. Those skilled in the art can also make adjustments without departing from the principle of the present invention. For example, in the assembled state, when the telescopic spring is in the relaxed state, the planetary gear 44 is in the second position 46 and meshes with the sun gear 41, the one-way motor 31 drives the fan 2 to rotate in the first direction and the planetary gear 33 drives the roller 1 to rotate in the second direction, which is the opposite of the first direction; when the hydraulic cylinder is activated, the telescopic spring is stretched, thus causing the planetary gear 44 to move to the first position 45 and mesh with the gear ring 42, the one-way motor 31 drives the fan 2 to rotate in the first direction and the planetary gear 44 drives the roller drive wheel 1 to rotate in the first direction.

[0049] In particular, in the second embodiment, a slot is preferably provided on the second output shaft 33. When the hydraulic cylinder pushes / pulls the planetary gear 44 to the position where it meshes with the sun gear 41 / ring gear 42, the output shaft of the hydraulic cylinder must leave the planetary gear 44 and fix the planetary gear 44 in the position where it meshes with the sun gear 41 / ring gear 42 through the slot, so as to ensure the normal rotation of the planetary gear 44.

[0050] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A clothes dryer, comprising a drum, a fan, and a one-way drive device, one end of the one-way drive device being connected to the fan. Its features are, The dryer also includes a planetary gear reversing mechanism, which includes a sun gear and a ring gear that are axially spaced apart from the roller drive, a position switching mechanism fixedly connected to the other end of the unidirectional drive device, and planetary gears that are operatively connected to the position switching mechanism. The position switching mechanism is configured to drive the planetary gears to move between a first position engaging with the ring gear and a second position engaging with the sun gear, so that when the unidirectional drive device drives the fan to rotate in one direction, the planetary gears can drive the drum to rotate in different directions.

2. The clothes dryer according to claim 1, characterized in that, The position switching mechanism is an axial movement mechanism, and the first position and the second position are two axial positions corresponding to the gear ring and the sun gear, respectively.

3. The clothes dryer according to claim 2, characterized in that, The unidirectional drive device is a unidirectional motor, which includes a first output shaft and a second output shaft. The first output shaft is connected to the fan, and the second output shaft is provided with a sliding groove. The planetary gear is sleeved on the second output shaft and can move between the first position and the second position along the sliding groove under the action of the axial moving mechanism.

4. The clothes dryer according to claim 3, characterized in that, The axial movement mechanism is an electromagnetic switch assembly, which includes an electromagnetic switch and a telescopic spring. The telescopic spring is sleeved on the second output shaft, with one end connected to the electromagnetic switch and the other end connected to the planetary gear. The telescopic spring is configured to hold the planetary gear in the first position in the relaxed state, and when the electromagnetic switch is activated, the telescopic spring is compressed and thus moves the planetary gear to the second position.

5. The clothes dryer according to claim 3, characterized in that, The axial movement mechanism is an electromagnetic switch assembly, which includes an electromagnetic switch and a telescopic spring. The telescopic spring is sleeved on the second output shaft, with one end connected to the electromagnetic switch and the other end connected to the planetary gear. The telescopic spring is configured to hold the planetary gear in the second position in the relaxed state, and when the electromagnetic switch is activated, the telescopic spring is stretched and thus moves the planetary gear to the first position.

6. The clothes dryer according to claim 4 or 5, characterized in that, The electromagnetic switch is sleeved on the second output shaft and rotates together with the second output shaft.

7. The clothes dryer according to claim 3, characterized in that, The axial movement mechanism is a hydraulic cylinder assembly, which includes a hydraulic cylinder and a telescopic spring. The telescopic spring is sleeved on the second output shaft, with one end connected to the hydraulic cylinder and the other end connected to the planetary gear. The telescopic spring is configured to hold the planetary gear in the first position in the relaxed state, and when the hydraulic cylinder is activated, the telescopic spring is compressed and thus moves the planetary gear to the second position.

8. The clothes dryer according to claim 3, characterized in that, The axial movement mechanism is a hydraulic cylinder assembly, which includes a hydraulic cylinder and a telescopic spring. The telescopic spring is sleeved on the second output shaft, with one end connected to the hydraulic cylinder and the other end connected to the planetary gear. The telescopic spring is configured to hold the planetary gear in the second position in the relaxed state, and when the hydraulic cylinder is activated, the telescopic spring is stretched and thus moves the planetary gear to the first position.

9. The clothes dryer according to claim 7 or 8, characterized in that, The hydraulic cylinder is mounted on the fixed structure of the dryer.

10. The clothes dryer according to claim 1, characterized in that, The fan is a centrifugal fan.

Images