CN114318803A

CN114318803A - Clothes dryer

Info

Publication number: CN114318803A
Application number: CN202011062280.0A
Authority: CN
Inventors: 李以民; 刘海涛; 金学峰; 许升
Original assignee: Qingdao Haier Washing Machine Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2022-04-12
Anticipated expiration: 2040-09-30
Also published as: CN114318803B; WO2022068387A1

Abstract

The present invention provides a clothes dryer. The clothes dryer comprises a shell, a drum arranged in the shell, a main drying system and a drying system, wherein the drum is used for providing a storage space for clothes; the main drying system comprises a heat pump system, a main fan and an air pipe system for limiting a drying air channel; the heat pump system comprises an evaporator and a condenser, and the air pipe system is configured to guide drying air flow, so that the drying air flow flows out of the roller under the action of the main fan, sequentially flows through the evaporator and the condenser, and then circularly enters the roller. The clothes dryer is provided with the heat pump system, and the heat pump system can provide higher condensation efficiency by condensing the water vapor in the damp and hot air through the cold end of the heat pump system, so that the drying efficiency is improved.

Description

Clothes dryer

Technical Field

The invention relates to the technical field of clothes treatment, in particular to a clothes dryer with a clothes drying function.

Background

With the progress of technology and the improvement of living standard, clothes dryers are gradually widely used by people. The dryer has the function of enabling high-temperature air flow to flow through clothes to be dried, taking away moisture in the clothes and enabling the clothes to be dried quickly. The clothes dryer comprises a shell, a roller and a support, wherein the roller and the support are arranged in the shell, and the roller is horizontally arranged. The existing clothes dryer is provided with the following air circulation channels: the hot air heated by the heating device is sent into the drying chamber with clothes from the air inlet at the rear part of the roller through the circulating channel, the moisture absorption air deprived of moisture from the clothes is sent back to the condensing device from the air outlet at the front part for dehumidification, and the dehumidified air is heated by the heating device again and sent into the roller. However, the existing dryer has low drying efficiency.

In addition, manufacturers are continuously developing improved designs of the external appearance and internal structure of the dryer in an attempt to increase various functions to meet the demands of the market. However, nowadays, the user must bend down to take and put in the clothes, which is laborious and inconvenient to operate.

Disclosure of Invention

The present invention is directed to overcoming at least one of the disadvantages of the existing clothes dryers and providing a novel clothes dryer to at least solve the problem of low drying efficiency of the existing clothes dryers.

Particularly, the present invention provides a clothes dryer, including a housing and a drum disposed in the housing, the drum for providing a storage space for laundry, further including a primary drying system;

the main drying system comprises a heat pump system, a main fan and an air pipe system for limiting a drying air channel; the heat pump system comprises an evaporator and a condenser, and the air pipe system is configured to guide the drying airflow so that the drying airflow flows through the evaporator and the condenser in sequence after flowing out of the roller under the action of the main fan and then circularly enters the roller.

Optionally, the main drying system further includes a semiconductor refrigeration and heating module, the semiconductor refrigeration and heating module includes a refrigeration end and a heating end, and the semiconductor refrigeration and heating module is disposed between the evaporator and the condenser, so that the drying airflow flows through the refrigeration end to be condensed again after flowing through the evaporator and being condensed under the action of the main blower, then flows through the heating end to be heated, and then flows through the condenser to be heated again and enters the drum.

Optionally, the semiconductor refrigeration and heating module further comprises a semiconductor refrigeration piece; the refrigerating end is a cold transfer device arranged on the cold end surface of the semiconductor refrigerating sheet, and the cold transfer device is provided with cold transfer fins; the heating end is a heat transfer device arranged on the heating end face of the semiconductor refrigerating sheet, and the heat transfer device is provided with heat transfer fins.

Optionally, an openable and closable clothes taking and placing opening is arranged on the peripheral wall of the drum;

the drum is arranged so as to have a retracted state retracted within the casing and an extended state at least partially outside the casing, and in the extended state, so that part or all of the laundry access opening is located outside the casing.

Optionally, the drum is slidably disposed in the housing in a front-rear direction;

the air pipe system comprises a first part arranged on the front end cover and a second part arranged in the shell, the first part is communicated with the front end of the roller, a first connecting structure is arranged between the first part and the second part, and a second connecting structure is arranged between the rear end of the roller and the second part;

the first connecting structure and the second connecting structure are configured to allow the drum to move forward to enable the drum to be in an extended state, and enable the drying air duct to be communicated when the drum is in a retracted state.

Optionally, the first connecting structure includes a plug tube and a plug tube, the plug tube is configured to be inserted into the plug tube, and a sealing gasket is disposed on an inner wall of the plug tube and/or an outer wall of the plug tube; alternatively, the first and second electrodes may be,

the first connecting structure comprises an extension tube and an attraction component, the attraction component comprises a first attraction piece and a second attraction piece which are mutually attracted, the first attraction piece is arranged at one end of the extension tube, the other end of the extension tube and one of the first attraction piece and the second attraction piece are arranged in the first part, and the other part is arranged in the second part.

Optionally, the second connecting structure comprises a plug tube and a plug tube, the plug tube is configured to be inserted into the plug tube, and a sealing gasket is arranged on an inner wall of the plug tube and/or an outer wall of the plug tube; alternatively, the first and second electrodes may be,

the second connecting structure comprises an extension tube and an attraction component, the attraction component comprises a first attraction part and a second attraction part which are mutually attracted, the first attraction part is arranged at one end of the extension tube, the other end of the extension tube and one of the second attraction part are arranged at the second part, and the other end of the extension tube is arranged at the rear end of the roller.

Optionally, the dryer further comprises an auxiliary drying system,

the roller extends along the front-back direction, and a front end cover is arranged at the front end of the roller; the air duct system is configured to guide the drying air flow so that the drying air flow is circulated into the drum from the rear end of the drum under the action of the main fan;

the auxiliary drying system is disposed in the front end cover, and is configured to suck an airflow from a front end of the drum, heat the airflow, and make the heated airflow enter the drum from the front end of the drum.

Optionally, the auxiliary drying system includes an auxiliary blower and a heating device, an air inlet structure and an air outlet structure are disposed on a rear wall of the front end cover, and the auxiliary blower is configured to force air in the drum to enter the front end cover through the air inlet structure, and after exchanging heat with the heating device, the air enters the drum again from the air outlet structure;

the air inlet structure is arranged in the center of the rear wall of the front end cover;

the air outlet structure is arranged above the air inlet structure, or the air outlet structure is arranged on the periphery of the air inlet structure, so that air flow is provided for the roller from a plurality of positions on the periphery of the air inlet structure.

Optionally, the drum extends in a front-back direction, and a front end cover is arranged at the front end of the drum; the air duct system is configured to guide the drying air flow so that the drying air flow is circulated into the drum from the rear end of the drum under the action of the main fan;

the front end cover is provided with an annular air outlet structure which is coaxial with the roller, so that the drying airflow flows out of the roller from the annular air outlet structure and enters the air pipe system.

Optionally, an annular structure coaxial with the drum is disposed on the front end cover, and the annular air outlet structure is disposed on an inner peripheral wall or a rear end surface of the annular structure.

Optionally, the clothes dryer further comprises a frame, the drum being rotatably mounted to the frame, the frame being movably mounted within the housing such that the drum is arranged to have the retracted state and the extended state, and a power device mounted to the frame, the power device being configured to drive the drum to rotate;

the power device is a direct drive motor and is positioned at the rear side of the roller, and the roller is arranged on an output shaft of the direct drive motor.

In the clothes dryer provided by the invention, because the heat pump system is arranged, the evaporator of the heat pump system is utilized to condense the water vapor in the damp and hot air, the evaporator of the heat pump system can provide higher condensing efficiency, and further the drying efficiency is improved. The condenser of the heat pump system is used for heating the drying air flow, so that energy is saved, and the energy utilization rate is high.

Furthermore, the clothes dryer of the invention is provided with the roller which can be extended out or retracted in the clothes dryer, when the roller is extended out, clothes can be taken and placed, and after the roller is retracted, the drying operation is carried out, so that the problem that a user can take and place the clothes only by bending down can be solved, the clothes can be taken and placed conveniently by the user, and the intelligent degree is high.

Further, the inventor finds that, in the existing ordinary clothes dryer, a hot air inlet is generally arranged at the rear part of the clothes dryer, and hot air flows from back to front in the drum, so that the temperature at the rear part of the drum is obviously higher than that at the front part, and the temperature difference is large, therefore, clothes at the front part of the drum are dried slowly, and the drying efficiency is low. The clothes dryer is provided with the auxiliary drying system, the air path of the auxiliary drying system is combined with the main drying system, and meanwhile, turbulent flow is formed in the roller, so that two ends in the roller have drying temperatures close to each other, uniform heating is realized, the drying efficiency is improved, and the clothes dryer is high in practicability. That is to say, this application compares in current ordinary dryer, can improve the anterior stoving temperature of cylinder, consequently is showing and is improving drying efficiency, and can realize the even stoving of clothing in the cylinder, promotes dryer drying efficiency.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic structural view of a dryer according to one embodiment of the present invention;

FIG. 2 is a schematic structural view of a dryer according to one embodiment of the present invention;

FIG. 3 is a schematic block diagram of the dryer shown in FIG. 1 with the drum in an extended state;

FIG. 4 is a schematic front view of a dryer according to one embodiment of the present invention;

FIG. 5 is a schematic structural view of a dryer according to one embodiment of the present invention;

FIG. 6 is a schematic structural view of a drum of a dryer in an extended state according to one embodiment of the present invention;

fig. 7 is a schematic structural view of an auxiliary drying system in a dryer according to one embodiment of the present invention;

FIG. 8 is a schematic structural view of a first coupling structure in the dryer according to one embodiment of the present invention;

FIG. 9 is a schematic structural view of a second coupling structure in the dryer according to one embodiment of the present invention;

FIG. 10 is a schematic structural view of a second coupling structure in the dryer according to one embodiment of the present invention;

FIG. 11 is a schematic structural view of a dryer according to one embodiment of the present invention;

fig. 12 is a schematic structural view of a semiconductor cooling and heating module in the dryer of fig. 11.

Detailed Description

Fig. 1 is a schematic structural view of a dryer according to one embodiment of the present invention. As shown in fig. 1 and referring to fig. 2 to 12, an embodiment of the present invention provides a dryer.

The dryer includes a case 20, a drum 21, a supporter, and a primary drying system. Wherein the drum 21 and the pedestal are disposed within the housing 20. The case 20 is an outer case of the dryer for protecting and accommodating internal components of the dryer, and in addition, may make the appearance of the dryer beautiful. The casing 20 may further be provided with a display device and an operation device, wherein the display device may be a display screen, an indicator light, etc. for displaying the working state of the clothes dryer; the manipulation means includes, but is not limited to, buttons, knobs, and a touch screen display for a user to manipulate or set the dryer. The holder may be used to support the housing 20, mount the drum 21, and a main drying system of the dryer, etc. Preferably, the drum 21 is horizontally disposed and used for housing and drying the laundry, i.e., the drum 21 is used for providing a storage space for the laundry. The drum 21 extends in the front-rear direction, and a front end cover 24 is provided at the front end of the drum 21. The front cover 24 is configured to close the front opening of the drum 21, that is, the rear side of the rear wall of the front cover 24 is the inner space of the drum 21. In some embodiments, the drum 21 may also be disposed obliquely with respect to the horizontal plane, or the like.

In the present embodiment, as shown in fig. 1, the primary drying system is configured to make the drying air flow enter the drum 21 from one end of the drum 21, and preferably, make the drying air flow enter the drum 21 from the rear end of the drum 21. As shown in fig. 1, the main drying system is a heat circulation system configured to allow a drying air flow to flow out from the front end of the drum 21, to be condensed and then heated, and to circulate into the drum 21 from the rear end of the drum 21. Preferably, the heat cycle system may include a hot air hood 41, a heat pump system, a main fan 44, and a wind pipe system. The hot air cover 41 is rotatably disposed at the rear end of the drum 21, and a plurality of ventilation holes are formed in a rear end cover of the drum 21 to supply hot air into the drum 21. The hot air hood 41 is disposed coaxially with the drum 21. In some alternative embodiments of the present invention, the rear end of the drum 21 is not provided with an end cover, and is directly sealed by the hot air cover 41 to prevent the laundry from coming out of the rear end of the drum 21.

The heat pump system includes an evaporator 71 and a condenser 72. The air duct system defines a drying air duct configured to guide a drying air flow so that the drying air flow flows out from the front end of the drum 21 under the action of the main blower 44, sequentially flows through the evaporator 71, the condenser 72 and enters the hot air hood 41, and then circulates into the drum 21 from the rear end of the drum 21. The heat cycle system serves to dry the laundry of the drum 21. Because the heat pump system is provided, the water vapor in the hot and humid air is condensed by the evaporator 71 of the heat pump system, and the heat pump system can provide higher condensing efficiency, thereby improving the drying efficiency. Specifically, a compressor of the heat pump system is communicated with a condenser 72, the condenser 72 is communicated with a throttling device, the throttling device is communicated with an evaporator 71, and the evaporator 71 is communicated with the compressor, that is, the compressor, the condenser 72, the throttling device and the evaporator 71 are sequentially communicated to form a refrigerant circulation system, a refrigerant medium is continuously converted into gas and liquid in the refrigerant circulation system, heat is released to heat drying air flow, and the drying air flow enters the drum 21 to dry clothes in the drum 21.

In some embodiments of the present invention, as shown in fig. 11, the thermal cycle system further comprises a semiconductor cooling and heating module. The semiconductor cooling and heating module comprises a cooling end 61 and a heating end 62. The semiconductor refrigerating and heating module is arranged between the evaporator 71 and the condenser 72, so that the drying air flow passes through the evaporator 71 under the action of the main fan 44 to be condensed, then passes through the refrigerating end 61 to be condensed again, then passes through the heating end 62 to be heated, and then passes through the condenser 72 to be heated again to enter the roller 21. Because of having the semiconductor refrigeration heating module, utilize the refrigeration end 61 of semiconductor module to condense the vapor in the damp and hot air, semiconductor module can provide higher condensation efficiency, and then improves drying efficiency.

The cold end of the semiconductor refrigeration module is used for auxiliary condensation of water vapor in the humid and hot air, namely the evaporator 71 is used for main condensation of water vapor in the humid and hot air, and then the cold end 61 of the semiconductor refrigeration module is used for auxiliary condensation, so that the condensation effect is improved. The hot end 62 of the semiconductor refrigeration module is used for preheating the drying airflow, so that the heating effect of the drying airflow is improved, and further, the clothes drying effect and the clothes drying efficiency are improved.

In some embodiments of the present invention, as shown in fig. 12, the semiconductor cooling and heating module further includes a semiconductor cooling plate 63. The refrigerating end 61 is a cold transfer device provided on a cold end surface of the semiconductor refrigerating sheet 63, and the cold transfer device has cold transfer fins. The heating end 62 is a heat transfer device provided on the hot end face of the semiconductor chilling plate 63, and the heat transfer device has heat transfer fins. In order to improve the drying efficiency, the cold end of the semiconductor refrigeration and heating module can be perpendicular to the flowing direction of the drying airflow, so that the drying airflow can flow away from the periphery side, such as the upper side, of the cold end of the semiconductor refrigeration and heating module after being subjected to heat exchange with the cooling end 61 by larger resistance.

In some embodiments of the present invention, the peripheral wall of the drum 21 is provided with a laundry access opening 22, and in the initial position, the laundry access opening 22 is located at the uppermost side of the peripheral wall of the drum 21, that is, the opening of the laundry access opening 22 faces upward. The laundry access opening 22 is openable, and for example, an access door 23 is provided at the laundry access opening 22 for opening and closing the laundry access opening 22. Further, the access door 23 is preferably arc-shaped to match the shape of the drum 21. The drum 21 is arranged so as to have a retracted state retracted into the casing 20 and an extended state at least partially outside the casing 20, and in the extended state, so that a part or all of the laundry access opening 22 is located outside the casing 20, and the laundry is accessed after the laundry access opening 22 is opened. In the retracted state, the drum 21 is completely within the interior space defined by the housing 20.

In this embodiment, the clothes dryer has a drum 21 capable of extending or retracting, when the drum 21 extends, the clothes can be taken and placed, and after the drum 21 retracts, the drying operation is performed, so that the pain point that the user can take and place only by bending down can be solved, and the user can take and place the clothes very conveniently. The peripheral wall of the drum 21 is provided with an openable/closable laundry loading/unloading opening 22, and is located in the casing 20 during drying, so that the laundry loading/unloading opening 22 can be sterilized by the high temperature used during drying, and secondary contamination during the loading/unloading of the laundry can be prevented.

Further, the drum 21 is arranged so as to allow a translational movement thereof along a preset direction, to switch between its retracted condition and its extended condition. For example, the drum 21 is slidably installed in the casing 20 in the front-rear direction to draw the casing 20 forward, so that part or all of the laundry access opening 22 is located outside the casing 20, and the laundry can be accessed from the laundry access opening 22 after the access door 23 is opened; and retracted rearward into the housing 20. The roller 21 extends in the front-rear direction and is slidably mounted in the housing 20 in the front-rear direction, and the roller is simple and compact in structure and convenient to mount.

In some preferred embodiments of the invention, the drum 21 is arranged so as to allow, in the retracted state, the rotation of the drum 21 about its axis of rotation to be carried out by the power means 30. That is, the dryer according to the embodiment of the present invention may be a drawer type dryer, the drum 21 may extend and retract as required, and the drum 21 is provided with the clothing taking and placing opening 22, so that the clothing may be taken and placed without bending down, thereby solving the pain of the conventional dryer that needs to be taken and placed by bending down. After the drum 21 is retracted into the housing 20, the rotation of the drum 21 is not affected, and the drying efficiency is improved by the rotation. The drum 21 is rotatably disposed with respect to the front cover 24. The front cover 24 mates with an opening in the front side of the housing 20 to enclose the housing 20. The front end cover 24 can also improve the safety of the dryer, prevent the rotary drum 21 from being directly exposed and ensure the safety. In some alternative embodiments of the present invention, the front cover 24 may be fixedly coupled to the drum 21 to rotate with the drum 21. The front cover 24 may also be referred to as a front door body or the like.

In some embodiments of the present invention, the portion of the air duct system disposed on the front end cap 24 may be referred to as a first portion, and the portion of the air duct system disposed within the housing 20 may be referred to as a second portion. The first part is communicated with the front end of the roller 21, a first connecting structure is arranged between the first part and the second part, and a second connecting structure is arranged between the rear end of the roller and the second part.

The first connecting structure and the second connecting structure are configured to allow the drum 21 to move forward to make the drum 21 in the extended state, and to make the drying duct communicate with each other when the drum 21 is in the retracted state. Because the first connecting structure and the second connecting structure are arranged, the connection device can be matched with the extension and retraction of the roller, and the connection part of the clothes drying and air path is provided with the connecting device which can automatically realize disconnection, connection and sealing, thereby ensuring that the roller washing machine can be operated to dry clothes. That is, in order to enable the drum 21 to be drawn out of the housing 20 forward and enable the air duct system to work normally after the drum 21 is retracted into the housing 20, a first connection structure may be disposed between the air outlet of the first portion and the air inlet of the second portion, and a second connection structure may be disposed between the hot air hood 41 and the air outlet of the second portion, so as to achieve automatic disconnection of the drying air duct when the drum 21 is extended and automatic connection when the drum 21 is retracted.

In some embodiments of the present invention, the first and second connection structures may be identical, for example, as shown in fig. 8 and 9, the first connection structure includes a plug tube 47 and a jack tube 48, and the plug tube 47 is inserted into the jack tube 48. Further, the inner wall of the insertion tube 48 may be tapered inward, i.e. gradually expanding toward the insertion head, such as a conical shape, e.g. a truncated cone, which may be a morse taper. The outer wall surface of the plug tube 47 is tapered so as to be fitted to the inner wall surface of the plug tube 48 and to be gradually reduced toward the plug tube 48. During the outward extraction of the drum 21, the plug tube 47 and the bayonet tube 48 are disengaged, and during the retraction of the drum 21, the plug tube 47 is inserted directly into the bayonet tube 48.

In some embodiments of the invention, as shown in FIG. 10, the second attachment structure may include a bellows 49 and an engagement assembly. The suction assembly comprises a first suction member 57 and a second suction member 58 which are mutually sucked, the first suction member 57 is arranged at one end of the extension tube 49, the other end of the extension tube 49 is arranged on the hot air cover 41, the second suction member 58 is arranged at the air flow outlet of the second part, or the other end of the extension tube 49 is arranged at the air flow outlet of the second part, and the second suction member 58 is arranged on the hot air cover 41. Bellows 49 can be a flexible tube or a rigid tube. Flexible pipe, which may also be referred to as a hose, has a certain amount of deformation. The flexible pipe may also be a pipe of corrugated construction. By arranging the telescopic pipe 49 and the suction assembly, the hot air hood 41 and the airflow outlet of the second part can be connected without generating adverse phenomena such as air leakage and the like due to small deviation. The first and second connection structures may be identical.

In some embodiments of the present invention, an annular air outlet structure is disposed on the front end cover 24. As shown in fig. 7, the annular air outlet structure is coaxial with the drum 21, so that the drying air flow flows out of the drum 21 from the front end of the drum 21 through the annular air outlet structure. Because the drying device is provided with the main drying system and the annular air outlet structure, the airflow field of drying airflow in the roller 21 can be changed, the drying temperature in the roller 21 is reasonably distributed as far as possible, uniform and rapid heating is realized as far as possible, the drying efficiency is improved, and the drying device is high in practicability.

For example, the front cover 24 is provided with an annular structure 241 coaxial with the drum 21, and the annular air outlet structure is provided on the inner peripheral wall or the rear end surface of the annular structure 241. Annular air-out structure includes a plurality of air-out portions, and a plurality of air-out portions are along cylinder 21's circumferential direction equipartition. Further, each air outlet portion includes one air outlet hole 242 or a plurality of air outlet holes 242 arranged in sequence along the front-back direction or a plurality of air outlet holes 242 arranged in sequence along the circumferential direction of the roller 21. In some alternative embodiments, the annular air outlet structure is an air outlet ring coaxial with the drum 21, that is, a plurality of air outlet portions are connected together in sequence. An observation window can be arranged on the front end cover 24, and the annular air outlet structure can be located on the periphery of the observation window. In some preferred embodiments, the axis of each region of the annular air outlet structure for air outlet is arranged to intersect with the axis of the drum. For example, the axis of the air outlet hole 242 is perpendicular to the axis of the drum 21, so that the airflow field of the drying airflow in the drum can be reasonably arranged.

In some embodiments of the present invention, the dryer further comprises an auxiliary drying system. The auxiliary drying system may be disposed outside the front end of the drum 21, and the auxiliary drying system is configured to suck an air flow from the front end of the drum 21, heat the air flow, and make the heated air flow enter the drum 21 from the front end of the drum 21. Preferably, the auxiliary drying system is disposed within the front cover 24. In the clothes dryer of the embodiment of the invention, because the auxiliary drying system is arranged, the air path of the auxiliary drying system is combined with the main drying system, and simultaneously, the turbulent flow is formed in the roller 21, so that the two ends in the roller 21 have the drying temperature close to each other, the uniform heating is realized, the drying efficiency is improved, and the practicability is strong. That is to say, this application compares in current ordinary dryer, can improve the anterior stoving temperature of cylinder 21, consequently is showing and is improving drying efficiency, and can realize the even stoving of the interior clothing of cylinder 21, promotes dryer drying efficiency. Preferably, the auxiliary drying system moves the airflow in the drum 21 forward out of the drum 21, and moves the airflow backward into the drum 21 after being heated by the auxiliary drying system. The auxiliary drying system is positioned on the inner side of the annular air outlet structure.

In some embodiments of the present invention, as shown in fig. 1 and 7, the air inlet of the air duct system may be communicated with the annular air outlet structure. For example, an annular air duct 244 communicating with the annular air outlet structure is disposed in the annular structure 241, and an outlet of the annular air duct 244 is connected to an air inlet of the air duct system. Preferably, the annular air outlet structure is disposed on the inner peripheral wall of the annular structure 241, each air outlet portion includes a plurality of air outlet holes 242 sequentially disposed along the front-back direction, and each air outlet hole 242 may extend along the circumferential direction of the drum 21 and communicate with the inner space of the drum 21. A guiding ring 243 is disposed on the rear end surface of the annular structure 241, and the guiding ring 243 and the inner peripheral wall of the annular structure 241 are on the same cylindrical surface. The guide ring 243 may be located within the front end opening of the drum 21. The rear wall of the front cover 24 may be protruded rearward to define an annular guide groove with the annular structure 241, and the drying air may enter the air outlet hole 242 through the annular guide groove. In some alternative embodiments of the present invention, only the lower portion of the inner peripheral wall or the lower portion of the rear end surface of the ring structure 241 is provided with the air outlet holes 242 to flow out the drying air flow from the lower portion of the front end of the drum 21.

In some embodiments of the present invention, the auxiliary drying system may include an auxiliary blower 51 and a heating device 52, an air inlet structure and an air outlet structure are disposed on a rear wall of the front end cover 24, and the auxiliary blower 51 is configured to promote air in the drum 21 to enter the front end cover 24 through the air inlet structure, and to enter the drum 21 again from the air outlet structure after exchanging heat with the heating device 52. The hot air flow blown out from the air outlet structure by the auxiliary fan 51 and the drying air flow blown out from the rear part by the main fan 44 act together to form turbulent flow at the front part of the roller 21, so that the temperature of clothes at the front part of the roller 21 is improved, and uniform drying temperature is formed at the front and the rear parts of the roller 21, thereby improving the drying efficiency. An auxiliary heating device 52 is provided to accelerate the evaporation of moisture from the laundry.

Because a heater and a fan are generally disposed at the rear of the conventional clothes dryer, hot air flows from the rear to the front in the drum 21, so that the temperature at the rear of the drum 21 is significantly higher than that at the front, and the temperature difference is large, and therefore, clothes at the front of the drum 21 are dried slowly, and the drying efficiency is low. According to the invention, the auxiliary drying device is arranged on the front end cover 24, so that the drying temperature of the front part of the roller 21 can be increased, and the drying efficiency is obviously improved.

Because of the existence of the heat cycle system in the clothes dryer, a person skilled in the art needs to reliably arrange the circulating air duct on a fixed part to ensure the stability of air supply, and to control the air supply temperature, the condensation temperature and the like conveniently, so as to obtain a good clothes drying effect. Therefore, before the present invention, those skilled in the art can obtain the technical solution of the present invention without creative work and without any breakthrough of the technical limitations and technical prejudice of the prior art, and the drying structure is disposed on the movable component, i.e., the drying structure, the annular air outlet structure, etc., is disposed on the front end cover 24.

In some embodiments of the present invention, as shown in fig. 2 and 3, the dryer further includes a first frame 25, the first frame 25 is translatably mounted in the housing 20 by a sliding rail structure 26, the drum 21 is rotatably mounted to the first frame 25, and the front cover 24 is fixedly mounted to the first frame 25. In particular, the first frame 25 is mounted on the support by means of a sliding rail structure 26. Further, the first frame 25 includes a rear frame at a rear side of the drum 21 and a peripheral frame disposed radially outside the drum 21, and connects the rear frame and the front cover 24. In other embodiments of the present invention, the dryer further includes a second frame rotatably mounted within the housing 20, specifically on a pedestal within the housing 20. The peripheral wall of the drum 21 is translatably mounted to the second frame by a sliding track structure. The power device 30 drives the second frame to rotate, and further drives the roller 21 to rotate.

Through setting up the push-and-pull of the cylinder 21 of being convenient for very much of frame and slip track structure, cylinder 21 supports through frame and slide, and the removal of cylinder 21 is realized through the slip track, can realize pulling out and closing as required, and the cylinder is in the back of indentation casing, does not influence the rotation of cylinder, improves drying efficiency through rotating.

Further, the drum 21 may be caused to perform the translational movement manually, or, as shown in fig. 4, the drum 21 may be driven to perform the translational movement by a driving structure 31 having a motive device. Specifically, in some embodiments, the front end cover 24 may be provided with a handle for drawing the drum 21, so that the translational movement of the drum 21 is achieved by manual pushing and pulling. In some alternative embodiments, the driving structure 31 is an automatic extension device to cause the drum 21 to perform a translational motion, such as causing the drum 21 to extend forward.

As shown in fig. 4, the automatic stretching device includes a gear connected to the power part, a rack engaged with the gear, and one of the power part and the rack installed in the housing 20 and the other connected to the drum 21. For example, a rack extends in the front-rear direction and is mounted to the first frame 25, a power unit is mounted to the bracket, and a gear is mounted to an output shaft of the power unit and is engaged with the rack to move the rack forward or backward when the power unit rotates the gear, thereby extending or retracting the drum 21 out of or into the housing 20. Alternatively, a rack extends in the front-rear direction and is mounted to the bracket, a power unit is mounted to the first frame 25, and a gear is mounted to an output shaft of the power unit and is engaged with the rack, so that the gear moves forward or backward along the rack when the power unit rotates the gear, thereby extending or retracting the drum 21 out of or into the housing 20.

In some embodiments of the present invention, as shown in fig. 1 to 4, the power device 30 may be a direct drive motor fixedly disposed on the first frame 25 to follow the first frame 25 and the drum 21 to move back and forth. The direct drive motor is positioned behind the roller 21, and the roller 21 is connected to an output shaft of the direct drive motor. The direct drive motor is a short name of a direct drive motor, and mainly means that the motor does not need to pass through a transmission device (such as a transmission belt) when driving a load. The direct drive motor can realize silence, energy conservation, stability and strong power. That is, the direct drive motor is directly connected with the drum 21, so that the direct drive clothes dryer has the advantages of high transmission efficiency, low vibration noise and the like, and can overcome the defects of low efficiency and high noise of the traditional clothes dryer. Moreover, the power device 30 for driving the roller 21 to rotate is arranged to extend or retract synchronously with the roller, so that the reliability of power transmission is ensured, and the structure is simple and compact.

In other embodiments of the present invention, as shown in FIG. 6, the power plant 30 may include a drive, a transmission 33, and a clutch 34. The driving device can be installed on the support, the transmission device 33 is disposed between the driving device and the clutch 34, and the clutch 34 is disposed behind the drum 21 and connected with the drum 21, so that the driving device drives the drum 21 to rotate through the transmission device 33 and the clutch 34. In particular, the drive means may be an electric motor and the transmission means 33 may be a belt transmission means. The belt transmission device comprises a driving belt wheel, a driven belt wheel and a belt, the driving belt wheel is mounted on an output shaft of the motor, the driven belt wheel and the roller 21 are coaxially arranged, and the belt is arranged on the driving belt wheel and the driven belt wheel. The on-off of the power of the roller 21 is realized through the connection and the disconnection of the clutch 34, the purpose that the power source does not move back and forth along with the roller 21 is realized, and the reliability of the device is improved. In some alternative embodiments, the belt transmission device includes a driving pulley mounted to an output shaft of the motor, an intermediate pulley disposed coaxially with the drum 21, a driven pulley disposed on the driving pulley and the intermediate pulley, and two belts disposed on the intermediate pulley and the driven pulley. In some optional embodiments of the invention, the direct drive motor may also be mounted on the housing and connected to the drum through a clutch structure.

In some embodiments of the present invention, the access door 23 is a sliding cover structure. The edges of the two front and back extensions of the clothes taking and placing opening 22 are provided with rails extending in the front and back direction, and the left side and the right side of the taking and placing door body 23 are installed on the two rails. The front end of the access door body 23 is provided with a handle, which can be a groove opened on the outer surface of the access door body 23, so as to manually open or close the clothes access opening 22. In some preferred embodiments of the present invention, as shown in fig. 5, a limit lock 27 is disposed in the housing 20, and the limit lock 27 is located on the upper side of the access door body 23. When the drum 21 extends, the limit lock 27 obtains a signal to extend a lock tongue, and the lock tongue acts on the access door body 23 to limit the access door body 23 to move outwards, so that the clothes access opening 22 can be opened while the drum 21 extends. After the roller 21 retracts into the housing 20, or when the roller 21 is ready to rotate, the limit lock 27 obtains a signal to retract the latch, the limit on the movement of the access door body 23 is released, and the access door body 23 rotates along with the roller 21. Further, a bolt insertion slot 28 for inserting a bolt is formed in the outer surface of the access door body 23, and the bolt can be inserted into the bolt insertion slot 28 to limit the movement of the access door body 23. In alternative embodiments of the present invention, the opening form of the drum door may be changed, for example, the access door body 23 may be rotatably mounted to the drum 21 about an axis extending forward and backward, and further, the access door body 23 may include two halves disposed left and right.

In some embodiments of the present invention, the main blower 44 may include fan blades. The fan blades may be mounted to the drive means or the fan blades may be connected to the drive means by a transmission 33, i.e. rotation of the fan blades and rotation of the drum 21 may use one drive means, which may be a motor.

In some embodiments of the present invention, as shown in fig. 1 and 7, the air inlet structure may include a plurality of air inlet holes, and further, the plurality of air inlet holes may be disposed on a cover plate, which is an air inlet cover 53, and the air inlet cover 53 may be mounted on the air inlet through holes formed on the rear wall of the front end cover 24. The air outlet structure is a first air outlet structure, and the first air outlet structure comprises a plurality of air outlet holes. Further, a plurality of air outlets may also be disposed on a cover plate, the cover plate is an air outlet cover 54, and the air outlet cover 24 may be mounted on an air outlet through hole formed on the rear wall of the front end cover 24. The air inlet structure can be arranged at the central position of the rear wall of the front end cover 24, and the air outlet structure is arranged above the air inlet structure, so that the temperature drying airflow in the roller 21 is distributed more uniformly, and the drying effect is improved.

In other embodiments of the present invention, the air outlet structure is disposed at the periphery of the air inlet structure to provide air flow into the drum from a plurality of positions at the periphery of the air inlet structure. For example, the air outlet structure is a second air outlet structure, the second air outlet structure includes a plurality of air outlets, each air outlet may be an arc-shaped opening, and the plurality of air outlets are uniformly distributed on the rear wall of the front end cover 24 along the circumferential direction of the drum 21. The heating device 52 may be in a ring-shaped configuration 241, which is arranged coaxially with the drum 21 to enhance the heating effect. In some embodiments of the present invention, the air outlet structure includes both the first air outlet structure and the second air outlet structure. The first air outlet structure can be a circular air outlet structure, and the second air outlet structure can be an annular air outlet structure, namely the air outlet structure is a circular air outlet structure or an annular air outlet structure.

In some embodiments of the present invention, the heating device 52 is an infrared heater that can radiate heat into the drum 21. The heating device 52 is disposed on the airflow path between the air inlet structure and the air outlet structure. The infrared heater has a high emissivity and can directly radiate heat to the laundry in the drum 21. The auxiliary fan 51 blows the remaining heat of the auxiliary heating device 52 into the drum 21 to dry the laundry. The auxiliary fan 51 may be a centrifugal fan or an axial fan or a diagonal fan.

In some embodiments of the invention, a lint filter 45 is provided on the duct system for filtering lint. The lint filter 45 is arranged on the first part of the air duct system, i.e. the lint filter 45 is also arranged on the front end cap 24. The lint filter 45 is disposed on the front end cover 24, so that impurities in the lint filter 45 can be cleaned conveniently.

In some embodiments of the invention, as shown in fig. 8 and 9, a gasket is provided on the inner wall of the bayonet tube 48 and/or on the outer wall of the plug tube 47. In the retraction process of the roller 21, the plug pipe 47 moves along the conical surface and is in sealing connection with the plug pipe 48 through the compression sealing gasket, so that automatic disconnection, connection and sealing performance during connection are realized. Further, a blocking surface is provided in the plug tube 48 to block the plug tube 47 from further inward insertion. In some embodiments of the present invention, as shown in fig. 10, the first and

second suction members

57 and 58 may have an elastic sealing member on one or both of the opposite surfaces to ensure sealing performance. The first and second engaging

members

57 and 58 may be magnetically attracted members such as magnets. Further, the first connecting structure may also adopt such a structure of the second connecting structure.

In some embodiments of the present invention, a water box groove is formed in the housing 20 and is located above the drum 21, and is typically disposed on a front panel of the housing 20 and near a top plate area of the housing 20. The water box groove is internally provided with a water box, the water box groove and the water box are in clearance fit, and the water box can be drawn out from the water box groove or inserted into the water box groove. The top of the water box is provided with an opening for receiving water discharged by a drain pipe at the lower side of the evaporator 71; when the water box is filled with water entering the water box, the water overflows from the top opening of the water box and flows into the water box groove. The water box groove is provided with an overflow hole which is generally arranged at the bottom of the water box groove so as to prevent water from accumulating in the water box groove. The overflow hole is communicated with the diversion channel through the overflow pipe. Therefore, when water in the water box overflows to the water box groove, the water in the water box groove can enter the flow guide channel through the overflow holes and the overflow pipes, the water flowing out of the flow guide channel can be used for cleaning the structures such as the evaporator 71 or the thread scrap filter 45, and the water is prevented from accumulating in the water box groove. A water pump is arranged on the drain pipe, a water storage tank is arranged at the lower side of the evaporator 71, and water in the water storage tank is conveyed into the water box through the water pump.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A clothes dryer comprises a shell and a drum arranged in the shell, wherein the drum is used for providing a storage space for clothes, and is characterized by also comprising a main drying system;

2. The clothes dryer of claim 1,

the main drying system further comprises a semiconductor refrigerating and heating module, the semiconductor refrigerating and heating module comprises a refrigerating end and a heating end, and the semiconductor refrigerating and heating module is arranged between the evaporator and the condenser, so that the drying airflow flows through the evaporator under the action of the main fan and is condensed, flows through the refrigerating end and is condensed again, then flows through the heating end and is heated, and then flows through the condenser and enters the roller after being heated again.

3. The clothes dryer of claim 2,

the semiconductor refrigerating and heating module also comprises a semiconductor refrigerating piece; the refrigerating end is a cold transfer device arranged on the cold end surface of the semiconductor refrigerating sheet, and the cold transfer device is provided with cold transfer fins; the heating end is a heat transfer device arranged on the heating end face of the semiconductor refrigerating sheet, and the heat transfer device is provided with heat transfer fins.

4. The clothes dryer of claim 1,

the peripheral wall of the drum is provided with a clothes taking and placing opening which can be opened and closed;

5. The clothes dryer of claim 4,

the roller is arranged in the shell in a sliding manner along the front-back direction;

6. The clothes dryer of claim 5,

the first connecting structure comprises a plug pipe and a plug pipe, the plug pipe is configured to be inserted into the plug pipe, and a sealing gasket is arranged on the inner wall of the plug pipe and/or the outer wall of the plug pipe; alternatively, the first and second electrodes may be,

7. The clothes dryer of claim 5,

the second connecting structure comprises a plug pipe and a plug pipe, the plug pipe is configured to be inserted into the plug pipe, and a sealing gasket is arranged on the inner wall of the plug pipe and/or the outer wall of the plug pipe; alternatively, the first and second electrodes may be,

8. The clothes dryer of claim 1, further comprising an auxiliary drying system,

9. The clothes dryer of claim 8,

the auxiliary drying system comprises an auxiliary fan and a heating device, wherein an air inlet structure and an air outlet structure are arranged on the rear wall of the front end cover, the auxiliary fan is configured to enable air in the roller to enter the front end cover through the air inlet structure, and after heat exchange with the heating device, the air enters the roller again from the air outlet structure;

10. The clothes dryer of claim 1,

an annular air outlet structure is arranged on the front end cover and is coaxial with the roller, so that the drying airflow flows out of the roller from the annular air outlet structure and enters the air pipe system;

the front end cover is provided with an annular structure coaxial with the roller, and the annular air outlet structure is arranged on the inner side peripheral wall or the rear end face of the annular structure.