Clothes drying apparatus and control method

Abstract

The application provides a clothes drying device and a control method. The clothes drying device comprises a support, a drum and a drying system. The drum is rotatably arranged on one side of the support, and an air outlet is formed at the drum opening of the drum. A bottom wall of the drum is provided with an air inlet. The drying system comprises an air inlet shell, an air outlet shell and a fan blade. The air inlet shell is arranged on the other side of the support and surrounded by the support to form an air inlet channel. The air outlet shell surrounds the air outlet channel. The air inlet, the air inlet channel, the air outlet channel and the air outlet are sequentially connected to form a drying flow path. An end of the air inlet channel close to the air inlet is provided with a first fan blade cavity, and a first fan blade is rotatably arranged in the first fan blade cavity. An end of the air inlet channel away from the air inlet or an end of the air outlet channel away from the air outlet is provided with a second fan blade cavity, and a second fan blade is rotatably arranged in the second fan blade cavity. The rotation of the first fan blade and / or the second fan blade can make the drying airflow circulate in the drying flow path, improve the flow of the drying airflow, and make the drying airflow and the clothes fully contact.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of clothes treatment, and particularly relates to a clothes drying device and a control method. BACKGROUND

[0002] In the prior art, a clothes dryer comprises a drum, a drying air duct and a fan; a drying flow path is formed between the drum and the drying air duct, the fan provides power for the drying air flow to circulate in the drying flow path, and the drying air flow exchanges heat with the clothes when flowing through the drum, so that the moisture in the clothes evaporates; however, the air inlet of the drum is arranged at the drum opening, and the drying air flow has large resistance when flowing through the air inlet, so that the drying air flow cannot fully contact the clothes; in addition, the position of the fan is not suitable, which results in insufficient flow of the drying air flow, uneven temperature distribution, incomplete drying and low drying efficiency. SUMMARY

[0003] In view of this, the present application provides a clothes drying device and a control method to solve the problems of insufficient flow of the drying air flow, insufficient contact between the drying air flow and the clothes, low drying efficiency and long drying time caused by the unsuitable position of the air inlet and the fan in the prior art.

[0004] The present application provides a clothes drying device, comprising:

[0005] a support and a drum, the drum is rotatably arranged at one side of the support, and an air outlet is formed at the drum opening of the drum, and an air inlet is formed at the bottom wall of the drum;

[0006] a drying system, comprising an air inlet shell, an air outlet shell and a fan blade; the air inlet shell is arranged at the other side of the support, and the air inlet shell and the support surround an air inlet duct; the air outlet shell is arranged close to the drum opening, and the air outlet shell surrounds an air outlet duct; one end of the air inlet duct is communicated with the air inlet, one end of the air outlet duct is communicated with the air outlet, and the other end of the air inlet duct is communicated with the other end of the air outlet duct, so that the air inlet duct, the air outlet duct and the drum form a drying flow path; the fan blade at least comprises a first fan blade and a second fan blade, the first fan blade is an axial fan blade, and the second fan blade is a centrifugal fan blade; a first fan blade cavity is formed at one end of the air inlet duct close to the air inlet, and the first fan blade is rotatably arranged in the first fan blade cavity;

[0007] one end of the air inlet duct away from the air inlet forms a second fan blade cavity, and the second fan blade is rotatably arranged in the second fan blade cavity; or, one end of the air outlet duct away from the air outlet forms a second fan blade cavity, and the second fan blade is rotatably arranged in the second fan blade cavity;

[0008] the first fan blade and / or the second fan blade rotates, so that the drying air flow circulates in the drying flow path.

[0009] Further optionally, the clothes drying apparatus further comprises a drum motor, the drum motor comprising a first output shaft and a second output shaft; the first output shaft being connected to the drum through a drum transmission mechanism; the second output shaft being connected to the second fan blade through a second fan blade transmission mechanism.

[0010] When the drum motor is running, the drum and the second fan blade are rotating.

[0011] Further optionally, the clothes drying apparatus further comprises a drum motor and a second fan blade motor, the drum motor comprising a first output shaft, the first output shaft being connected to the drum through a drum transmission mechanism; the second fan blade motor being connected to the second fan blade through a second fan blade transmission mechanism.

[0012] When the drum motor is running, the drum is rotating; when the second fan blade motor is running, the second fan blade is rotating.

[0013] Further optionally, the drum transmission mechanism comprises a belt pulley and a belt, the belt pulley being connected to the first output shaft through a belt transmission mechanism, the belt pulley being connected to the drum through the belt; when the drum motor is running, the drum is rotating.

[0014] Further optionally, the support is formed with an axle hole, a drum axle being rotatably arranged in the axle hole; one end of the drum axle being connected to the bottom wall of the drum, the other end of the drum axle being connected to the first fan blade transmission mechanism; when the drum is rotating, the first fan blade is rotating; or,

[0015] The clothes drying apparatus further comprises a first fan blade motor, the first fan blade motor being connected to the first fan blade through a first fan blade transmission mechanism; when the first fan blade motor is running, the first fan blade is rotating.

[0016] Further optionally, the first fan blade and the drum axle are connected through a speed change device, the speed change device enabling the first fan blade to rotate when the drum is rotating in a forward direction or enabling the first fan blade to rotate when the drum is rotating in a reverse direction.

[0017] The forward direction is one of clockwise rotation and counterclockwise rotation of the drum when the drum is observed at the drum opening; the reverse direction is the other of clockwise rotation and counterclockwise rotation of the drum when the drum is observed at the drum opening.

[0018] Further optionally, the speed change device comprises a speed change box, a fan blade transmission mechanism and a ratchet mechanism; the speed change box being arranged on the support, the fan blade transmission mechanism being arranged in the speed change box, the fan blade transmission mechanism comprising a driving gear, a first driven gear, a second driven gear and a third driven gear.

[0019] The driving gear and the drum shaft are coaxially arranged and connected through the ratchet mechanism; the first driven gear and the second driven gear are coaxially connected, and the third driven gear and the blade shaft of the first blade are coaxially connected; the driving gear and the first driven gear are engaged, and the second driven gear and the third driven gear are engaged.

[0020] When the drum rotates forward, the first blade rotates forward under the action of the blade transmission mechanism; when the drum rotates reversely, the first blade does not rotate.

[0021] Further optionally, the bottom wall of the drum is formed with a plurality of air inlet areas, each of which is provided with a plurality of air inlets, and the plurality of air inlet areas are arranged at intervals along the circumference of the drum.

[0022] The support is a support plate, and the support is formed with a plurality of ventilation openings; the plurality of ventilation openings and the plurality of air inlet areas are correspondingly arranged, and the ventilation openings communicate the air inlets and the first blade cavity.

[0023] When the first blade rotates, the drying airflow in the first blade cavity can enter the drum through the ventilation openings and the air inlets.

[0024] Further optionally, the drying device further comprises a base, and the drying system further comprises a two-device assembly; the support and the two-device assembly are arranged on the base, the support is located at the rear side of the drum, and the two-device assembly is arranged below the drum; the support is further formed with an air passage.

[0025] The two-device assembly comprises a two-device box, an evaporator and a condenser, the two-device box is formed with a two-device box passage, one end of the two-device box passage communicates with the other end of the air outlet channel, and the other end of the two-device box passage communicates with the other end of the air inlet channel through the air passage; the evaporator and the condenser are arranged in the two-device box passage, the evaporator is used for dehumidifying the drying airflow, and the condenser is used for heating the drying airflow.

[0026] The application also provides a control method of a drying device, the drying device is any one of the drying devices described above, and the drying device is provided with a drying program; the control method comprises the following steps:

[0027] Adjusting the rotation speed of the first blade and / or the rotation speed of the second blade according to different drying stages of the drying program.

[0028] Compared with the prior art, the application has the following beneficial effects:

[0029] The air outlet is formed at the barrel mouth of the drum, the bottom wall of the drum is formed with the air inlet, the positions of the air inlet and the air outlet are optimized, and the resistance of the drying airflow flowing through the air inlet is reduced; the air inlet, the air inlet channel, the air outlet channel and the air outlet are sequentially communicated to form a drying flow path, the first fan blade is rotatably arranged at one end of the air inlet channel close to the air inlet, and the second fan blade is rotatably arranged at one end of the air inlet channel away from the air inlet or one end of the air outlet channel away from the air outlet; the first fan blade and the second fan blade are rotated, the drying airflow is circulated in the drying flow path, the temperature distribution of the drying airflow is uniform, the flow of the drying airflow is improved, the drying airflow and the clothes are fully contacted, the drying is complete, and the drying efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creating any creative labor.

[0031] The structures, proportions, sizes and the like shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the limiting conditions of the implementation of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0032] Figure 1 The assembly structure schematic diagram of the clothes dryer provided by the present application embodiment 1 is shown in the figure;

[0033] Figure 2 The explosion structure schematic diagram of the clothes dryer provided by the present application embodiment 1 is shown in the figure;

[0034] Figure 3a And Figure 3b The structure schematic diagram of the clothes dryer (without drying system) provided by the present application embodiment 1 is shown in the figure;

[0035] Figure 4a The cross-sectional structure schematic diagram of the clothes dryer provided by the present application embodiment 1 is shown in the figure;

[0036] Figure 4b The Figure 4a The enlarged view of A in the figure;

[0037] Figure 5 The assembly structure schematic diagram of the clothes dryer provided by the present application embodiment 2 is shown in the figure;

[0038] Figure 6The explosion structure schematic view of the clothes dryer provided by the present application is shown in Figure 2;

[0039] Figure 7a The cross-sectional structure schematic view of the clothes dryer provided by the present application is shown in Figure 3;

[0040] Figure 7b The explosion structure schematic view of the clothes dryer provided by the present application is shown in Figure 2; Figure 7a The enlarged view of the middle B;

[0041] Figure 8 The explosion structure schematic view of the clothes dryer provided by the present application is shown in Figure 2;

[0042] Figure 9a The explosion structure schematic view of the clothes dryer provided by the present application is shown in Figure 2;

[0043] Figure 9b The explosion structure schematic view of the clothes dryer provided by the present application is shown in Figure 2;

[0044] Figure 9c The explosion structure schematic view of the clothes dryer provided by the present application is shown in Figure 2;

[0045] Figure 10 The explosion structure schematic view of the clothes dryer provided by the present application is shown in Figure 2;

[0046] The explosion structure schematic view of the clothes dryer provided by the present application is shown in Figure 2;

[0047] 11-roller; 111-air inlet; 112-air outlet; 113-roller shaft; 12-support; 121-vent; 122-vent; 13-base; 14-compressor; 151-bearing; 152-bearing seat; 161-first nut; 162-second nut;

[0048] 2-drying system; 211-air inlet shell; 212-air outlet shell; 221-first impeller; 222-second impeller; 223-impeller shaft; 231-first impeller motor; 232-second impeller motor; 241-two-way valve box body; 242-two-way valve box cover; 251-evaporator; 252-condenser;

[0049] 3-roller motor; 31-first output shaft; 32-second output shaft;

[0050] 4-roller transmission mechanism; 41-pulley; 42-belt;

[0051] 5-speed change device; 51-gearbox; 52-driving gear; 531-first driven gear; 532-second driven gear; 533-third driven gear; 54-connecting shaft. DETAILED DESCRIPTION

[0052] The following will be described in detail with reference to specific embodiments of the present application. Other advantages and effects of the present application, which are readily understood by those skilled in the art, can be easily derived from the description of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0053] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two, but does not exclude the case of including at least one.

[0054] It should be understood that the term "and / or" used herein is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0055] It should also be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that the product or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such product or system. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the product or system including the element.

[0056] In the prior art, the clothes dryer includes a drum, a drying air duct and a fan; a drying flow path is formed between the drum and the drying air duct, and the fan provides power for the drying air flow to circulate in the drying flow path. When the drying air flow passes through the drum, it exchanges heat with the clothes, causing the water in the clothes to evaporate. However, the air inlet of the drum is arranged at the drum opening, and the resistance of the drying air flow passing through the air inlet is large, so the drying air flow cannot fully contact the clothes. In addition, the improper position of the fan leads to insufficient flow of the drying air flow, uneven temperature distribution, incomplete drying and low drying efficiency.

[0057] The application creatively provides a clothes drying device, which comprises a support, a drum and a drying system; the drum is rotatably arranged on one side of the support, and an air outlet is formed at the drum opening of the drum, and the bottom wall of the drum is provided with an air inlet; the positions of the air inlet and the air outlet are optimized, and the resistance of the drying airflow flowing through the air inlet is reduced; the drying system comprises an air inlet shell, an air outlet shell and a fan blade; the air inlet shell is arranged on the other side of the support and surrounds the support to form an air inlet channel, and the air outlet shell surrounds the air outlet channel; the air inlet, the air inlet channel, the air outlet channel and the air outlet are sequentially communicated to form a drying flow path; the fan blade comprises at least a first fan blade and a second fan blade; a first fan blade cavity is formed at one end of the air inlet channel close to the air inlet, and the first fan blade cavity is rotatably provided with the first fan blade; a second fan blade cavity is formed at one end of the air inlet channel away from the air inlet or one end of the air outlet channel away from the air outlet, and the second fan blade cavity is rotatably provided with the second fan blade; the rotation of the first fan blade and the second fan blade can make the drying airflow circulate in the drying flow path, so that the temperature distribution of the drying airflow is uniform, the flow of the drying airflow is improved, the drying airflow and the clothes are fully contacted, the drying is complete, and the drying efficiency is improved.

[0058] Embodiment 1

[0059] As shown in Figures 1 to 4b and Figures 8 to 10 , the present embodiment provides a clothes drying device, which comprises:

[0060] a base 13, a support 12 and a drum 11; the support 12 is a support plate and is arranged on the base 13; the drum 11 is rotatably arranged on one side of the support 12, and an air outlet 112 is formed at the drum opening of the drum 11, and the bottom wall of the drum 11 is provided with an air inlet 111;

[0061] a drying system 2, which comprises an air inlet shell 211, an air outlet shell 212 and a two-device assembly; the air inlet shell 211 is arranged on the other side of the support 12, and the air inlet shell 211 and the support 12 surround the air inlet channel; the air outlet shell 212 is arranged close to the drum opening of the drum 11, and the air outlet shell 212 surrounds the air outlet channel; one end of the air inlet channel is communicated with the air inlet 111, and one end of the air outlet channel is communicated with the air outlet 112; the two-device assembly is arranged below the drum 11, and the two-device assembly comprises a two-device box, which forms a two-device box channel; the two-device box channel is communicated with the other end of the air inlet channel and the other end of the air outlet channel, so that the air inlet channel, the two-device box channel, the air outlet channel and the drum 11 form a drying flow path; one end of the air inlet channel close to the air inlet 111 is formed with a first fan blade cavity, and the first fan blade cavity is rotatably provided with a first fan blade 221; one end of the air inlet channel away from the air inlet 111 is formed with a second fan blade cavity, and the second fan blade cavity is rotatably provided with a second fan blade 222;

[0062] The first fan blade 221 and the second fan blade 222 rotate, so that the drying air flow circulates in the drying flow path, and then the drying air flow exchanges heat with the clothes in the drum 11, so as to achieve the purpose of drying the clothes.

[0063] Specifically, the bottom wall of the drum 11 is formed with a plurality of air inlet areas, each air inlet area is provided with a plurality of air inlets 111, the plurality of air inlet areas are arranged at intervals along the circumference of the drum 11, the axes of the plurality of air inlet areas are consistent with the rotation axis of the drum 11; the support 12 is located at the rear side of the drum 11, the support 12 is formed with a plurality of ventilation openings 121, the plurality of ventilation openings 121 and the plurality of air inlet areas are correspondingly arranged, the ventilation opening 121 communicates the air inlet 111 and the first fan blade cavity; when the first fan blade 221 rotates, the drying air flow in the first fan blade cavity can enter the drum 11 through the ventilation opening 121 and the air inlet 111; the support is also formed with an air passing opening, one end of the two cartridge channels and the other end of the air outlet channel are communicated, the other end of the two cartridge channels and the other end of the air inlet channel are communicated through the air passing opening 122.

[0064] Further, the first fan blade 221 is an axial fan blade, and the second fan blade 222 is a centrifugal fan blade.

[0065] In order to solve the problem that the drying efficiency is low due to the inability to independently control the rotation of the drum 11 and the second fan blade 222, the clothes drying device further comprises a drum motor 3 and a second fan blade motor 232, the drum motor 3 comprises a first output shaft 31, the first output shaft 31 is drivingly connected to the drum 11 through a drum transmission mechanism 4; the output shaft of the second fan blade motor 232 is drivingly connected to the second fan blade 222;

[0066] When the drum motor 3 operates, the drum 11 rotates; when the second fan blade motor 232 operates, the second fan blade 222 rotates; according to actual drying needs, the rotation speed of the drum 11 and the rotation speed of the second fan blade 222 are adjusted.

[0067] In order to solve the problem that the structure of the drum transmission mechanism 4 is complex, the drum transmission mechanism 4 comprises a belt pulley 41 and a belt 42, the belt pulley 41 and the first output shaft 31 are drivingly connected, and the belt pulley 41 and the drum 11 are connected through the belt 42; when the drum motor 3 operates, the drum 11 rotates under the action of the belt 42.

[0068] In order to solve the problem that the structure required for independently controlling the rotation of the drum 11 and the first fan blade 221 is complex, the support 12 is formed with a shaft hole, and a drum shaft 113 is rotatably arranged in the shaft hole; one end of the drum shaft 113 is connected to the bottom wall of the drum 11, and the other end of the drum shaft 113 is drivingly connected to the first fan blade 221; when the drum 11 rotates, the first fan blade 221 rotates; specifically, a bearing seat 152 is arranged in the shaft hole, and a bearing 151 is arranged between the drum shaft 113 and the bearing seat 152.

[0069] Further, the first fan blade 221 and the drum shaft 113 are drivingly connected through the speed change device 5 and are fastened through the first nut 161 and the second nut 162; the speed change device 5 drives the first fan blade 221 to rotate when the drum 11 rotates in the forward direction or drives the first fan blade 221 to rotate when the drum 11 rotates in the reverse direction; the transmission ratio is increased, the axial fan blade has a higher rotating speed, the flow rate of the drying airflow is increased, and the clothes are prevented from being wound due to the one-way rotation of the drum 11.

[0070] The forward rotation is one of the clockwise rotation and the counterclockwise rotation of the drum 11 when the drum 11 is observed at the drum opening of the drum 11, and the reverse rotation is the other of the clockwise rotation and the counterclockwise rotation of the drum 11 when the drum 11 is observed at the drum opening of the drum 11.

[0071] Specifically, the speed change device 5 includes a speed change box 51, a fan blade transmission mechanism, and a ratchet mechanism; the speed change box 51 is arranged on the support 12, the fan blade transmission mechanism is arranged in the speed change box 51, and the fan blade transmission mechanism includes a driving gear 52, a first driven gear 531, a second driven gear 532, and a third driven gear 533.

[0072] The driving gear 52 and the drum shaft 113 are coaxially arranged and are connected through the ratchet mechanism; the first driven gear 531 and the second driven gear 532 are coaxially connected through a connecting shaft 54, and the third driven gear 533 and a fan blade shaft 223 of the first fan blade 221 are coaxially connected; the driving gear 52 and the first driven gear 531 are engaged, and the second driven gear 532 and the third driven gear 533 are engaged.

[0073] When the drum 11 rotates in the forward direction, the first fan blade 221 rotates in the forward direction under the action of the fan blade transmission mechanism; when the drum 11 rotates in the reverse direction, the first fan blade 221 does not rotate.

[0074] Specifically, the first fan blade 221 and the drum shaft 113 are connected through a detachable structure, the first fan blade 221 and the drum shaft 113 can be drivingly connected according to actual needs, or the first fan blade 221 and the drum shaft 113 can be independently controlled; so as to better meet the individual design requirements of the product, and improve the interchangeability between the fan blades, facilitating the maintenance of the product; the engagement of the driving gear 52 and the first driven gear 531 has a first transmission ratio, and the engagement of the second driven gear 532 and the third driven gear 533 has a second transmission ratio; so as to increase the rotating speed of the first fan blade 221, and the first transmission ratio and the second transmission ratio are both greater than 1.

[0075] It should be noted that the speed change device 5 is not limited to gear transmission, but can also be belt transmission or chain transmission.

[0076] Further, the two-ware box comprises a two-ware box body 241 and a two-ware cover body 242, the two-ware cover body 242 is covered on the two-ware box body 241, and a two-ware box passage is formed between the two-ware box body 241 and the two-ware cover body 242; the two-ware assembly further comprises an evaporator 251 and a condenser 252, which are sequentially arranged in the two-ware box passage along the flow direction of the drying airflow, the evaporator 251 is used for dehumidifying the drying airflow, and the condenser 252 is used for heating the drying airflow; the first fan blade 221 and the second fan blade 222 rotate, and the drying airflow in the drum 11 sequentially flows through the air outlet 112, the air outlet duct, the evaporator 251, the condenser 252, the second fan blade cavity, the air inlet duct and the first fan blade cavity, and then enters the drum 11 again; the wet and hot drying airflow is changed into low-temperature dry drying airflow when flowing through the evaporator 251, and the low-temperature dry drying airflow is changed into high-temperature dry drying airflow when flowing through the condenser 252;

[0077] The drying system 2 further comprises a compressor 14, which is in communication with the evaporator 251 and the condenser 252 through a refrigerant pipeline.

[0078] The embodiment provides a control method of the clothes drying apparatus, the clothes drying apparatus is any one of the clothes drying apparatuses described above, and the clothes drying apparatus is provided with a drying program; the control method comprises the following steps:

[0079] The rotating speed of the first fan blade 221 and / or the rotating speed of the second fan blade 222 is adjusted according to different drying stages of the drying program.

[0080] In summary, in the clothes drying apparatus, the axial fan blade and the centrifugal fan blade are used to make the drying airflow flow in the drying flow path in time, effectively change the direction of the drying airflow, reduce the flow resistance, increase the flow path, make the drying airflow and the clothes fully and timely exchange heat, make the drying airflow and the two-ware fully and timely exchange heat, and improve the drying efficiency; the drum 11 can drive the first fan blade 221 to rotate, the structure is simplified, the problem that the motor of the first fan blade 221 is prone to failure due to water vapor corrosion and high temperature is avoided, and the clothes drying apparatus is more energy-saving.

[0081] Embodiment 2

[0082] As shown in Figs. Figures 5 to 7b and Figures 8 to 10 Different from embodiment 1, in order to solve the problem that the drum 11 and the first fan blade 221 cannot be independently controlled to rotate, the clothes drying apparatus further comprises a first fan blade motor 231, the first fan blade motor 231 is arranged on the air inlet shell 211, and the output shaft of the first fan blade motor 231 is drivingly connected with the first fan blade 221; the first fan blade 221 rotates when the first fan blade motor 231 operates; the rotating speed of the drum 11 and the rotating speed of the first fan blade 221 can be adjusted according to actual drying needs;

[0083] In the early stage of drying, the moisture content of the clothes is high, the temperature of the heating source (heat pump, electric heating, PTC) rises slowly, the wet amount is less than the dehumidification amount, at this time the rotation speed of the first fan blade 221 can be reduced to reduce energy consumption; as the temperature of the heating source tends to be stable, the wet amount and the dehumidification amount are basically flat, the rotation speed of the first fan blade 221 is increased, and the high rotation speed state is stabilized to speed up the air circulation; in the late stage of drying, the moisture content of the clothes is low, the dehumidification efficiency is low, and the rotation speed of the first fan blade 221 can be appropriately increased to pass the drying airflow through the clothes and remove the moisture on the clothes that is difficult to dry or in the folded position, thereby improving the drying uniformity.

[0084] Embodiment 3

[0085] Different from embodiment 1, the clothes drying device further comprises a drum motor 3, the drum motor 3 comprises a first output shaft 31 and a second output shaft 32; the first output shaft 31 is drivingly connected with the drum 11 through a drum transmission mechanism 4, and the second output shaft 32 is drivingly connected with the second fan blade 222;

[0086] When the drum motor 3 operates, the drum 11 and the second fan blade 222 rotate; the drum motor 3 simultaneously drives the drum 11, the first fan blade 221 and the second fan blade 222 to rotate, which simplifies the number of parts and reduces the occupied space of the clothes drying device, which is conducive to the miniaturization of the product and makes the product run more energy-efficiently.

[0087] The above specifically illustrates and describes the exemplary embodiments of the present disclosure. It should be understood that the present disclosure is not limited to the detailed structure, arrangement or implementation method described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent arrangements within the spirit and scope of the appended claims.

Claims

1. A clothes drying apparatus, characterized by, The dryer comprises a support (12) and a drum (11), the drum (11) is rotatably arranged on one side of the support (12), and an air outlet (112) is formed at the opening of the drum (11), and a bottom wall of the drum (11) is provided with an air inlet (111); The drying system (2) comprises an air inlet shell (211), an air outlet shell (212) and a fan blade; the air inlet shell (211) is arranged on the other side of the support (12), and the air inlet shell (211) and the support (12) surround an air inlet channel; the air outlet shell (212) is arranged close to the opening of the drum (11), and the air outlet shell (212) surrounds an air outlet channel; one end of the air inlet channel is communicated with the air inlet (111), one end of the air outlet channel is communicated with the air outlet (112), and the other end of the air inlet channel is communicated with the other end of the air outlet channel, so that the air inlet channel, the air outlet channel and the drum (11) form a drying flow path; the fan blade comprises at least a first fan blade (221) and a second fan blade (222), the first fan blade (221) is an axial fan blade, and the second fan blade (222) is a centrifugal fan blade; the air inlet channel is formed with a first fan blade cavity close to the air inlet (111), and the first fan blade (221) is rotatably arranged in the first fan blade cavity; The air inlet channel is formed with a second fan blade cavity away from the air inlet (111), and the second fan blade (222) is rotatably arranged in the second fan blade cavity; The rotation of the first fan blade (221) and / or the second fan blade (222) can make the drying air flow circulate in the drying flow path; The support (12) is formed with a shaft hole, and a drum shaft (113) is rotatably arranged in the shaft hole; one end of the drum shaft (113) is connected with the bottom wall of the drum (11), and the other end is drivingly connected with the first fan blade (221); when the drum (11) rotates, the first fan blade (221) rotates; The first fan blade (221) and the drum shaft (113) are drivingly connected through a speed changing device (5), and the speed changing device (5) makes the first fan blade (221) rotate when the drum (11) rotates in a forward direction or makes the first fan blade (221) rotate when the drum (11) rotates in a reverse direction; Wherein, the forward rotation is one of clockwise rotation and counterclockwise rotation of the drum (11) when the drum (11) is observed at the opening of the drum (11); and the reverse rotation is the other of clockwise rotation and counterclockwise rotation of the drum (11) when the drum (11) is observed at the opening of the drum (11). The dryer further comprises a drum motor (3), the drum motor (3) comprises a first output shaft (31) and a second output shaft (32); the first output shaft (31) is drivingly connected with the drum (11) through a drum transmission mechanism (4), and the second output shaft (32) is drivingly connected with the second fan blade (222); 2. The clothes drying apparatus according to claim 1, characterized in that, When the drum motor (3) operates, the drum (11) and the second fan blade (222) rotate. ​ 3.The laundry drying apparatus of claim 1, wherein, The clothes drying device further comprises a drum motor (3) and a second fan blade motor (232), the drum motor (3) comprises a first output shaft (31), the first output shaft (31) is drivingly connected through a drum transmission mechanism (4) and a drum (11); the output shaft of the second fan blade motor (232) and a second fan blade (222) are drivingly connected; When the drum motor (3) operates, the drum (11) rotates; when the second fan blade motor (232) operates, the second fan blade (222) rotates.

4. The clothes drying apparatus according to claim 2 or 3, characterized in that, The drum transmission mechanism (4) comprises a belt pulley (41) and a belt (42), the belt pulley (41) and the first output shaft (31) are drivingly connected, and the belt pulley (41) and the drum (11) are connected through the belt (42); when the drum motor (3) operates, the drum (11) rotates.

5. The clothes drying apparatus according to claim 4, characterized in that, The variable speed device (5) comprises a variable speed box (51), a fan blade transmission mechanism and a ratchet mechanism; the variable speed box (51) is arranged on the support (12), the fan blade transmission mechanism is arranged in the variable speed box (51), and the fan blade transmission mechanism comprises a driving gear (52), a first driven gear (531), a second driven gear (532) and a third driven gear (533); The driving gear (52) and the drum shaft (113) are coaxially arranged, and the driving gear (52) and the drum shaft (113) are connected through the ratchet mechanism; the first driven gear (531) and the second driven gear (532) are coaxially connected, and the third driven gear (533) and the fan blade shaft (223) of the first fan blade (221) are coaxially connected; the driving gear (52) and the first driven gear (531) are engaged, and the second driven gear (532) and the third driven gear (533) are engaged; When the drum (11) rotates forward, the first fan blade (221) rotates forward under the action of the fan blade transmission mechanism; when the drum (11) rotates reversely, the first fan blade (221) does not rotate. 6.The laundry drying apparatus of claim 1, wherein The bottom wall of the drum (11) is formed with a plurality of air inlet areas, each of which is provided with a plurality of air inlets (111), and a plurality of the air inlet areas are arranged at intervals along the circumference of the drum (11); The support (12) is a support plate, and a plurality of ventilation openings (121) are formed in the support (12); a plurality of the ventilation openings (121) and a plurality of the air inlet areas are correspondingly arranged, and the ventilation openings (121) communicate the air inlets (111) and the first fan blade cavity; When the first fan blade (221) rotates, the drying airflow in the first fan blade cavity can enter the drum (11) through the ventilation openings (121) and the air inlets (111). 7.The laundry drying apparatus of claim 6, wherein, The clothes drying device further comprises a base (13), and the drying system (2) further comprises a two-device assembly; the support (12) and the two-device assembly are arranged on the base (13), the support (12) is located at the rear side of the drum (11), and the two-device assembly is arranged below the drum (11); the support (12) is further formed with an air passing opening (122). The two-ware assembly comprises a two-ware box, an evaporator (251) and a condenser (252), the two-ware box is formed with a two-ware box passage, one end of the two-ware box passage is communicated with the other end of the air outlet channel, and the other end of the two-ware box passage is communicated with the other end of the air inlet channel through the air passing opening (122); the evaporator (251) and the condenser (252) are arranged in the two-ware box passage, the evaporator (251) is used for dehumidifying the drying air flow, and the condenser (252) is used for heating the drying air flow. 8.A control method of a clothes drying apparatus, characterized by, The clothes drying apparatus is the clothes drying apparatus according to any one of claims 1 to 7, and the clothes drying apparatus is provided with a drying program; and the control method comprises: adjusting the rotating speed of the first fan blade (221) and / or the rotating speed of the second fan blade (222) according to different drying stages of the drying program.

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