WO2022068387A1

WO2022068387A1 - Clothes dryer

Info

Publication number: WO2022068387A1
Application number: PCT/CN2021/110765
Authority: WO
Inventors: 李以民; 刘海涛; 金学峰; 许升
Original assignee: 青岛海尔洗衣机有限公司; 青岛海尔智能技术研发有限公司; 海尔智家股份有限公司
Priority date: 2020-09-30
Filing date: 2021-08-05
Publication date: 2022-04-07
Also published as: CN114318803A; CN114318803B

Abstract

A clothes dryer, comprising a housing and a drum provided in the housing, the drum being used for providing a clothes storage space. The clothes dryer further comprises a main drying system; the main drying system comprises a heat pump system, a main fan, and an air duct system used for defining a drying air duct; the heat pump system comprises an evaporator and a condenser; the air duct system is configured to guide drying airflow, so that the drying airflow flows out of the drum under the action of the main fan to sequentially flow through the evaporator and the condenser, and then circularly enters the drum. Since the clothes dryer of the present invention is provided with the heat pump system, and a cold end of the heat pump system is used for condensing water vapor in hot wet air, the heat pump system can provide higher condensing efficiency, and then the drying efficiency is improved.

Description

clothes dryer

technical field

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

Background technique

With the advancement of technology and the improvement of living standards, clothes dryers have gradually been widely used by people. The function of the clothes dryer is to make the high temperature air flow through the clothes that need to be dried, take away the moisture in the clothes, and make the clothes dry quickly. The clothes dryer includes a casing, a drum and a support, wherein the drum and the support are arranged in the casing, and the drum is arranged horizontally. The existing clothes dryer is provided with the following air circulation channel: the hot air heated by the heating device is sent into the drying chamber containing the clothes through the circulation channel through the air inlet at the rear of the drum, and the hygroscopic air that has captured the moisture from the clothes From the front air outlet, it is sent back to the condensing device for dehumidification, and the dehumidified air is heated by the heating device again and sent to the drum. However, existing dryers have low drying efficiency.

In addition, manufacturers continue to improve the design of the appearance and internal structure of the dryer, trying to add various functions to meet the needs of the market. However, up to now, users have to bend down and squat down to take and put clothes, which is somewhat laborious and inconvenient to operate.

SUMMARY OF THE INVENTION

The present invention aims to overcome at least one defect of the existing clothes dryer, and provides a novel clothes dryer to at least solve the problem that the drying efficiency of the existing clothes is relatively low.

Specifically, the present invention provides a clothes dryer including a casing and a drum provided in the casing, the drum is used to provide a storage space for clothes, and also includes a main drying system;

The main drying system includes a heat pump system, a main fan, and an air duct system for defining a drying air duct; the heat pump system includes an evaporator and a condenser, and the air duct system is configured to direct the drying airflow , so that after the drying airflow flows out of the drum under the action of the main fan, it flows through the evaporator and the condenser in sequence, and then circulates into the drum.

Optionally, the main drying system further includes a semiconductor cooling and heating module, the semiconductor cooling and heating module includes a cooling end and a heating end, and the semiconductor cooling and heating module is arranged on the evaporator and the condenser. between the evaporators, so that the drying airflow flows through the evaporator under the action of the main fan to be condensed, then flows through the cooling end to be condensed again, then passes through the heating end to be heated, and then passes through the The condenser is reheated and then enters the drum.

Optionally, the semiconductor refrigeration and heating module further includes a semiconductor refrigeration fin; the cooling end is a cooling device disposed on the cold end surface of the semiconductor refrigerating fin, and the cooling device has cooling fins; The heating end is a heat transfer device disposed on the hot end surface of the semiconductor refrigeration sheet, and the heat transfer device has heat transfer fins.

Optionally, an openable and closable clothing pick-and-place port is provided on the peripheral wall of the drum;

The drum is arranged so as to have a retracted state retracted into the housing, and an extended state at least partially outside the housing, and in the extended state, the laundry access opening is arranged to have a retracted state. Part or all of it is located on the outside of the housing.

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

The air duct system includes a first part arranged on the front end cover and a second part arranged in the casing, the first part communicates with the front end of the drum, and the first part and the second part A first connection structure is arranged therebetween, and a second connection structure is arranged between the rear end of the drum and the second part;

Both the first connection structure and the second connection structure are configured to allow the drum to move forward so that the drum is in an extended state, and when the drum is in the retracted state, the drying Dry air duct is connected.

Optionally, the first connection 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 provided on the inner wall of the plug tube and/or on the outer wall of the plug tube ;or,

The first connection structure includes a telescopic tube and a suction assembly, the suction assembly includes a first suction member and a second suction member that attract each other, and the first suction member is arranged at one end of the telescopic tube , one of the other end of the telescopic tube and the second suction part is arranged on the first part, and the other is arranged on the second part.

Optionally, the second connection 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 provided on the inner wall of the plug tube and/or on the outer wall of the plug tube ;or,

The second connection structure includes a telescopic tube and a suction assembly, the suction assembly includes a first suction member and a second suction member that attract each other, and the first suction member is arranged at one end of the telescopic tube , one of the other end of the telescopic tube and the second suction part is arranged at the second part, and the other is arranged at the rear end of the drum.

Optionally, the clothes dryer further includes an auxiliary drying system,

The drum extends in the front-rear direction, and the front end of the drum is provided with a front end cover; the air duct system is configured to guide the drying airflow, so that the drying airflow is The rear end of the drum circulates into the drum;

The auxiliary drying system is arranged in the front end cover, and the auxiliary drying system is configured to suck air flow from the front end of the drum, heat the air flow, and make the heated air flow from the front end of the drum into the drum.

Optionally, the auxiliary drying system includes an auxiliary fan and a heating device, an air inlet structure and an air outlet structure are provided on the rear wall of the front end cover, and the auxiliary fan is configured to promote the air in the drum to pass through the air. The air inlet structure enters into the front end cover, and after exchanging heat with the heating device, it enters the drum again from the air outlet structure;

The air inlet structure is arranged at the central position 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 as to provide air to the drum from multiple positions on the periphery of the air inlet structure. airflow.

Optionally, the drum extends in the front-rear direction, and the front end of the drum is provided with a front end cover; the air duct system is configured to guide the drying airflow, so that the drying airflow acts on the main fan Circulate into the drum from the rear end of the drum;

An annular air outlet structure is arranged on the front end cover, and the annular air outlet structure is coaxial with the drum, so that the drying airflow flows out of the drum from the annular air outlet structure and enters the air duct 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 the inner peripheral wall or rear end surface of the annular structure.

Optionally, the clothes dryer further includes a frame and a power unit, the drum is rotatably mounted to the frame, and the frame is movably mounted in the housing, so that the drum is arranged such that Having the retracted state and the extended state, the power device is mounted on the frame, and the power device is configured to drive the drum to rotate;

The power device is a direct-drive motor, located at the rear side of the drum, and the drum is mounted on the output shaft of the direct-drive motor.

In the clothes dryer of the present invention, because of the heat pump system, the evaporator of the heat pump system is used to condense the water vapor in the hot and humid air, and the evaporator of the heat pump system can provide higher condensation efficiency, thereby improving drying efficiency. The condenser of the heat pump system is used to heat the drying airflow, which saves energy and has a high energy utilization rate.

Further, in the clothes dryer of the present invention, because there is a drum that can be extended or retracted, when the drum is extended, the clothes can be taken and placed, and the drying operation can be performed after the drum is retracted, which can solve the problem that the user can only pick and place by bending over. It is very convenient for users to pick and place clothes, and the degree of intelligence and intelligence is high.

Further, the inventor found that the existing ordinary clothes dryer is generally provided with a hot air inlet at the rear of the clothes dryer, and the hot air flows from the back to the front in the drum, causing the temperature at the rear of the drum to be significantly higher than the temperature at the front, and the temperature difference is relatively high. Therefore, the laundry in the front of the drum dries slowly and the drying efficiency is low. The dryer of the present invention has an auxiliary drying system, the air path of the auxiliary drying system, combined with the main drying system, forms a turbulent flow in the drum at the same time, so that the two ends of the drum have similar drying temperatures to achieve uniform drying. Heating, improving drying efficiency and strong practicability. That is to say, compared with the existing ordinary clothes dryer, the present application can increase the drying temperature at the front of the drum, thus significantly improving the drying efficiency, and realizing uniform drying of the clothes in the drum, improving the clothes dryer. drying efficiency.

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

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

1 is a schematic block diagram of a clothes dryer according to an embodiment of the present invention;

2 is a schematic structural diagram of a clothes dryer according to an embodiment of the present invention;

3 is a schematic structural diagram of a clothes dryer according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of the drum of the clothes dryer shown in FIG. 2 in an extended state;

5 is a schematic front view of a clothes dryer according to an embodiment of the present invention;

6 is a schematic structural diagram of a clothes dryer according to an embodiment of the present invention;

7 is a schematic structural diagram of a drum of a clothes dryer in an extended state according to an embodiment of the present invention;

8 is a schematic structural diagram of an auxiliary drying system in a clothes dryer according to an embodiment of the present invention;

9 is a schematic structural diagram of a first connection structure in a clothes dryer according to an embodiment of the present invention;

10 is a schematic structural diagram of a second connection structure in a clothes dryer according to an embodiment of the present invention;

11 is a schematic structural diagram of a second connection structure in a clothes dryer according to an embodiment of the present invention;

12 is a schematic structural diagram of a clothes dryer according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a semiconductor cooling and heating module in the clothes dryer shown in FIG. 12 .

Detailed ways

FIG. 1 is a schematic block diagram of a clothes dryer 1 according to an embodiment of the present invention, and FIG. 2 is a schematic structural diagram of a clothes dryer 1 according to an embodiment of the present invention. As shown in FIG. 1 and referring to FIGS. 2 to 13 , an embodiment of the present invention provides a clothes dryer 1 .

The clothes dryer 1 includes a casing 20 , a drum 21 , a stand and a main drying system 40 . Among them, the drum 21 and the support are arranged in the casing 20 . The casing 20 is an outer shell of the dryer 1 for protecting and accommodating the internal components of the dryer 1, and in addition, the appearance of the dryer 1 can be beautiful. A display device and a control device can also be provided on the housing 20, and the display device can be a display screen, an indicator light, etc., used to display the working state of the clothes dryer 1; The user operates or sets the dryer 1 . The stand may be used to support the housing 20, install the drum 21 and the main drying system 40 of the clothes dryer 1, and the like. Preferably, the drum 21 is arranged horizontally and is used for receiving and drying laundry, that is, the drum 21 is used to provide a storage space for the laundry. The drum 21 extends in the front-rear direction, and the front end of the drum 21 is provided with a front end cover 24 . The front end cover 24 is a structure for closing the front side opening of the drum 21 , that is, the rear side of the rear wall of the front end cover 24 is the inner space of the drum 21 . In some embodiments, the drum 21 may also be inclined relative to the horizontal plane, etc.

In this embodiment, as shown in FIG. 2 , the main drying system 40 is configured so that the drying airflow enters the drum 21 from one end of the drum 21 , preferably, the drying airflow enters the drum 21 from the rear end of the drum 21 . As shown in FIG. 2 , the main drying system 40 is a thermal circulation system. The thermal circulation system is configured such that the drying airflow flows out from the front end of the drum 21 , is condensed and then heated, and then circulates into the rear end of the drum 21 . Roller 21. Preferably, the heat circulation system may include a hot air hood 41 , a heat pump system 70 , a main fan 44 and an air duct system 11 . The hot air cover 41 is rotatably disposed at the rear end of the drum 21 , and a plurality of ventilation holes are provided on the rear end cover of the drum 21 to transport hot air into the drum 21 . The hot air hood 41 is arranged coaxially with the drum 21 . In some optional embodiments of the present invention, the rear end of the drum 21 is not provided with an end cover, and is directly blocked by the hot air cover 41 to prevent the laundry from coming out from the rear end of the drum 21 .

Heat pump system 70 includes evaporator 71 and condenser 72 . The air duct system 11 defines a drying air duct, which is configured to guide the drying airflow, so that the drying airflow flows out from the front end of the drum 21 under the action of the main fan 44, and then flows through the evaporator 71, the condenser 72 and enters the The hot air hood 41 then circulates into the drum 21 from the rear end of the drum 21 . The thermal circulation system is used to dry the laundry in the drum 21 . With the heat pump system 70, the evaporator 71 of the heat pump system 70 is used to condense the water vapor in the hot and humid air, and the heat pump system 70 can provide higher condensation efficiency, thereby improving drying efficiency. Specifically, the compressor of the heat pump system 70 communicates with the condenser 72, the condenser 72 communicates with the throttling device, the throttling device communicates with the evaporator 71, and the evaporator 71 communicates with the compressor, that is, the compressor, the condenser 72. The throttling device and the evaporator 71 are connected in turn to form a refrigerant circulation system, and the refrigerant medium is continuously converted into a gaseous state and a liquid state in the refrigerant circulation system, and the heat is released to heat the drying airflow, and the drying airflow enters the drum 21. The laundry in the drum 21.

In some embodiments of the present invention, as shown in FIG. 12 , the thermal cycle system further includes a semiconductor cooling and heating module 60 . The semiconductor cooling and heating module 60 includes a cooling end 61 and a heating end 62 . The semiconductor cooling and heating module 60 is arranged between the evaporator 71 and the condenser 72, so that the drying air flows through the evaporator 71 under the action of the main fan 44 to be condensed, then flows through the cooling end 61 to be condensed again, and then passes through the cooling end 61. The hot end 62 is heated, and then passes through the condenser 72 to be reheated and then enters the drum 21 . Because the semiconductor cooling and heating module 60 is provided, the cooling end 61 of the semiconductor module is used to condense the water vapor in the hot and humid air, and the semiconductor module can provide higher condensation efficiency, thereby improving drying efficiency.

The cold end of the semiconductor refrigeration module is used to assist in condensing the water vapor in the hot and humid air, that is, the evaporator 71 is used to mainly condense the water vapor in the humid and hot air, and then the cold end 61 of the semiconductor refrigeration module is used to assist condensation to improve the condensation effect. The hot end 62 of the semiconductor refrigeration module is used to preheat the drying airflow, so as to improve the heating effect of the drying airflow, thereby providing the drying effect and the drying efficiency.

In some embodiments of the present invention, as shown in FIG. 13 , the semiconductor cooling and heating module 60 further includes a semiconductor cooling sheet 63 . The cooling end 61 is a cooling device disposed on the cold end surface of the semiconductor cooling sheet 63, and the cooling device has cooling fins. The heating end 62 is a heat transfer device disposed on the hot end surface of the semiconductor refrigeration sheet 63 , and the heat transfer device has heat transfer fins. On the basis of understanding the present embodiment, those skilled in the art should easily know the positions of the cooling fins and the heat transfer fins, so they are not marked in the drawings. In order to improve the drying efficiency, the cold end of the semiconductor cooling and heating module 60 can be perpendicular to the flow direction of the drying airflow, so that after the drying airflow is subjected to greater resistance to heat exchange with the cooling end 61, The circumferential side of the cold end, such as the upper side, flows away.

In some embodiments of the present invention, the peripheral wall of the drum 21 is provided with a laundry access opening 22. In the initial position, the laundry access opening 22 is located on the uppermost side of the peripheral wall of the drum 21, that is, the opening of the laundry access opening 22. up. The clothing pick-and-place port 22 can be opened and closed. For example, a pick-and-place door 23 is provided at the clothing pick-and-place port 22 for opening and closing the clothing pick-and-place port 22 . Further, the pick-and-place door body 23 is preferably arc-shaped, which matches the shape of the drum 21 . The drum 21 is arranged so as to have a retracted state retracted into the housing 20, and an extended state at least partially located outside the housing 20, and in the extended state, a part or all of the laundry access opening 22 is located in the extended state. On the outer side of the housing 20, the clothes can be taken and placed after the clothes take-and-place port 22 is opened. In the retracted state, the drum 21 is completely within the inner space defined by the housing 20 .

In this embodiment, the clothes dryer 1 has a drum 21 that can be extended or retracted. When the drum 21 is extended, clothes can be taken and placed, and the drum 21 can be retracted to perform the drying operation, which can solve the problem that the user can only take the clothes by bending over. It is very convenient for users to take and place clothes. The peripheral wall of the drum 21 is provided with an openable and closable clothing access opening 22, which is located in the casing 20 when drying clothes. secondary pollution.

Further, the drum 21 is arranged such that it is allowed to perform a translational movement in a preset direction to switch between its retracted state and its extended state. For example, the drum 21 is slidably installed in the casing 20 in the front-rear direction, so that the casing 20 can be pulled out forward, so that part or all of the laundry access opening 22 is located outside the casing 20, so that the access door can be opened when the door is opened. After 23, the clothes are taken and placed from the clothes take-and-place port 22; and the housing 20 is retracted backward. The drum 21 extends in the front-rear direction and is slidably installed in the housing 20 along the front-rear direction, and has a simple and compact structure and is easy to install.

In some preferred embodiments of the present invention, the drum 21 is arranged such that in the retracted state the drum 21 is allowed to rotate about its axis of rotation to be driven by the power device 30 to rotate. That is to say, the clothes dryer 1 in the embodiment of the present invention can be a drawer-type clothes dryer 1, the drum 21 can be extended and retracted as required, and the drum 21 is provided with a clothes take-and-place port 22, so that the clothes can be taken out without bending over. Put it, solve the pain point of the traditional clothes dryer 1 need to bend over to pick and put. After the drum 21 is retracted into the casing 20, the rotation of the drum 21 is not affected, and the drying efficiency is improved by the rotation. The drum 21 is rotatably provided with respect to the front end cover 24 . The front end cover 24 cooperates with the opening of the front side of the case 20 to close the case 20 . The front cover 24 can also improve the safety of the dryer 1, prevent the rotating drum 21 from being directly exposed, and ensure safety. In some alternative embodiments of the present invention, the front end cover 24 may be fixedly connected with 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 part of the air duct system 11 is disposed on the front end cover 24 , and the part of the air duct system 11 disposed on the front end cover 24 may be referred to as the first part 111 , then the configuration of the air duct system 11 The portion within the housing 20 may be referred to as the second portion 112 . The first part 111 communicates with the front end of the drum 21 , a first connection structure 15 is provided between the first part 111 and the second part 112 , and a second connection structure 16 is provided between the rear end of the drum and the second part 112 .

Both the first connecting structure 15 and the second connecting structure 16 are configured to allow the drum 21 to move forward so that the drum 21 is in an extended state, and when the drum 21 is in a retracted state, the drying air duct is communicated. Because it has the first connection structure 15 and the second connection structure 16, it can cooperate with the extension and retraction of the drum, and a connection device that can automatically realize disconnection and connection and sealing is provided at the connection between the dryer and the air path, so as to ensure the drum washing machine. Can work to dry clothes. That is to say, in order to enable the drum 21 to pull out the casing 20 forward, and to allow the air duct system 11 to work normally after the drum 21 is retracted into the casing 20, the airflow outlet of the first part 111 and the airflow inlet of the second part 112 A first connection structure 15 may be provided therebetween, and a second connection structure 16 may be provided between the hot air hood 41 and the air outlet of the second part 112, so as to realize the automatic disconnection of the drying air duct when the drum 21 extends, and the drum 21 Automatically connect when retracted.

In some embodiments of the present invention, the first connection structure 15 and the second connection structure 16 may be the same. For example, as shown in FIG. 9 and FIG. 10 , the first connection structure 15 includes a plug tube 47 and a plug tube 48 . The plug tube 47 is inserted into the socket 48 . Further, the inner wall surface of the plug-in tube 48 may be inwardly tapered, that is, gradually expanded toward the plug-in joint, such as a conical surface shape, such as a truncated cone, and a Morse taper may be used. The outer wall surface of the plug tube 47 is in a tapered shape that matches the inner wall surface of the plug tube 48 and is gradually reduced toward the plug tube 48 . When the drum 21 is pulled out, the plug tube 47 and the plug tube 48 are disengaged, and when the drum 21 is retracted, the plug tube 47 is directly inserted into the plug tube 48 .

In some embodiments of the present invention, as shown in FIG. 11 , the second connection structure 16 may include a telescopic tube 49 and a pull-in assembly. The suction assembly includes a first suction member 57 and a second suction member 58 that attract each other. The first suction member 57 is arranged on one end of the telescopic tube 49, and the other end of the telescopic tube 49 is arranged on the hot air hood 41. The suction part 58 is arranged at the air outlet of the second part 112 , or the other end of the telescopic tube 49 is arranged at the air outlet of the second part 112 , and the second suction part 58 is arranged on the hot air hood 41 . The telescoping tube 49 may be a flexible tube or a rigid tube. Flexible pipes can also be referred to as hoses, with a certain amount of deformation. The flexible pipe may also be a corrugated pipe. By arranging the telescopic tube 49 and the suction assembly, the connection between the hot air hood 41 and the airflow outlet of the second part 112 can be prevented from causing undesirable phenomena such as air leakage due to small deviation. The first connection structure 15 and the second connection structure 16 may be the same.

In some embodiments of the present invention, the front end cover 24 is provided with an annular air outlet structure. As shown in FIG. 8 , the annular air outlet structure is coaxial with the drum 21 , so that the drying airflow flows out of the drum 21 from the front end of the drum 21 through the annular air outlet structure. Because of the main drying system 40 and the annular air outlet structure, the air flow field of the drying airflow in the drum 21 can be changed, the drying temperature in the drum 21 can be reasonably distributed as much as possible, uniform and rapid heating can be achieved as much as possible, and the drying rate is improved. Dry efficiency and strong practicability.

For example, the front end cover 24 is provided with an annular structure 241 coaxial with the drum 21 , and the annular air outlet structure is disposed on the inner peripheral wall or rear end surface of the annular structure 241 . The annular air outlet structure includes a plurality of air outlet portions, and the plurality of air outlet portions are evenly distributed along the circumferential direction of the drum 21 . 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-rear direction or a plurality of air outlet holes 242 arranged in sequence along the circumferential direction of the drum 21 . In other embodiments, the annular air outlet structure may be directly one or more air outlet holes 242 . In some optional embodiments, the annular air outlet structure is an air outlet ring coaxial with the drum 21 , that is to say, a plurality of air outlet parts are connected together in sequence. The front end cover 24 may be provided with an observation window, and the annular air outlet structure may be located at the periphery of the observation window. In some preferred embodiments, the axis of each area 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 clothes dryer 1 further includes an auxiliary drying system 50 . The auxiliary drying system 50 can be arranged outside the front end of the drum 21 , and the auxiliary drying system 50 is configured to inhale the 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 50 is arranged in the front end cover 24 . In the clothes dryer 1 of the embodiment of the present invention, the auxiliary drying system 50 is provided, and the air path of the auxiliary drying system 50 is combined with the main drying system 40, and turbulent flow is formed in the drum 21 at the same time, so that the two ends of the drum 21 are turbulent. It has a drying temperature that is close to, realizes uniform heating, improves drying efficiency, and has strong practicability. That is to say, compared with the existing ordinary clothes dryer 1, the present application can increase the drying temperature of the front part of the drum 21, thereby significantly improving the drying efficiency, and realizing uniform drying of the clothes in the drum 21, improving the Dryer 1 drying efficiency. Preferably, the auxiliary drying system 50 makes the air flow in the drum 21 move forward out of the drum 21 , and after being heated by the auxiliary drying system 50 , makes the air flow backward into the drum 21 . The auxiliary drying system 50 is located inside the annular air outlet structure.

In some embodiments of the present invention, as shown in FIG. 2 and FIG. 8 , the air inlet of the air duct system 11 may communicate with the annular air outlet structure. For example, the annular structure 241 is provided with an annular air duct 244 communicating with the annular air outlet structure, and the outlet of the annular air duct 244 is connected to the air inlet of the air duct system 11 . Preferably, the annular air outlet structure is arranged on the inner peripheral wall of the annular structure 241 , and each air outlet portion includes a plurality of air outlet holes 242 arranged in sequence along the front and rear directions, and each air outlet hole 242 can be along the circumferential direction of the drum 21 . It extends and communicates with the inner space of the drum 21 . A guide ring 243 is disposed on the rear end surface of the annular structure 241 , and the guide 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 in the front opening of the drum 21. The rear wall of the front end cover 24 may protrude backward, and an annular guide groove is defined between the front end cover 24 and the annular structure 241 , and the drying airflow can enter the air outlet hole 242 through the annular guide groove. In some alternative embodiments of the present invention, only the lower part of the inner peripheral wall of the annular structure 241 or the lower part of the rear end surface is provided with an air outlet hole 242 to flow out the drying airflow from the lower part of the front end of the drum 21 .

In some embodiments of the present invention, the auxiliary drying system 50 may include an auxiliary fan 51 and a heating device 52 , an air inlet structure and an air outlet structure are provided on the rear wall of the front end cover 24 , and the auxiliary fan 51 is configured to promote the inside of the drum 21 . The air enters the front end cover 24 through the air inlet structure, and after exchanging heat with the heating device 52, it enters the drum 21 again from the air outlet structure. The hot air flow from the auxiliary fan 51 from the air outlet structure and the drying air flow from the rear of the main fan 44 work together to form a turbulent flow in the front of the drum 21, which increases the temperature of the clothes in the front of the drum 21, and makes the front and rear of the drum 21. Form a uniform drying temperature to improve drying efficiency. The auxiliary heating device 52 is provided to speed up the evaporation of moisture in the clothes.

Because the ordinary clothes dryer 1 is generally provided with a heater and a fan at the rear of the clothes dryer 1, the hot air flows from the back to the front in the drum 21, causing the temperature at the rear of the drum 21 to be significantly higher than the temperature at the front, and the temperature difference is large, so The laundry at the front of the drum 21 is slow to dry, and the drying efficiency is very low. According to the present invention, by setting the auxiliary drying device on the front end cover 24, the drying temperature of the front part of the drum 21 can be increased, thus significantly improving the drying efficiency.

Due to the existence of a thermal circulation system in the dryer 1, those skilled in the art need to reliably set the circulating air duct on the fixed component to ensure the stability of the air supply and facilitate the control of the air supply temperature, condensation temperature, etc., So as to achieve a good drying effect. Therefore, before the present invention, without creative work, without breaking through the ideological shackles and technical prejudices of the prior art, those of ordinary skill in the art could not obviously obtain the technical solution of the present invention. The front end cover 24 is provided with a drying structure, an annular air outlet structure, and the like.

In some embodiments of the present invention, as shown in FIG. 3 and FIG. 4 , the clothes dryer 1 further includes a first frame 25 , the first frame 25 is movably installed in the housing 20 through the sliding track structure 26 , and the drum 21 The front end cover 24 is rotatably mounted on the first frame 25 , and the front end cover 24 is fixedly mounted on the first frame 25 . Specifically, the first frame 25 is mounted on the support through the sliding track structure 26 . Further, the first frame 25 includes a rear frame and a peripheral frame, the rear frame is located at the rear side of the drum 21 , the peripheral frame is disposed radially outside the drum 21 , and the peripheral frame connects the rear frame and the front end cover 24 . In other embodiments of the present invention, the clothes dryer 1 further includes a second frame, and the second frame is rotatably mounted in the housing 20 , and specifically, the second frame is rotatably mounted on a support in the housing 20 superior. The peripheral wall of the drum 21 is translationally mounted on the second frame through the sliding track structure. The power device 30 drives the second frame to rotate, thereby driving the drum 21 to rotate.

By setting the frame and the sliding track structure, the pushing and pulling of the drum 21 is particularly convenient. The drum 21 is supported by the frame and the sliding track, and the movement of the drum 21 is realized by the sliding track, which can be pulled out and closed as required. It does not affect the rotation of the drum, and the drying efficiency is improved through rotation.

Further, the drum 21 may be manually moved to perform translational movement, or as shown in FIG. 5 , the drum 21 may be driven to perform translational movement by a driving structure 31 having a prime mover. Specifically, in some embodiments, the front end cover 24 may be provided with a handle for pulling and pulling the drum 21 , so that the translational movement of the drum 21 is achieved by manual pushing and pulling. In some optional embodiments, the driving structure 31 is an automatic extension device, so as to urge the drum 21 to perform translation, for example, to urge the drum 21 to extend forward.

As shown in FIG. 5, the automatic extension device includes a gear, a rack and a power part, the gear is connected to the power part, the gear is meshed with the rack, and one of the power part and the rack is installed in the housing 20, and the other is installed in the housing 20. Connected to the drum 21 . For example, the rack extends in the front-rear direction and is mounted on the first frame 25, the power part is mounted on the support, the gear is mounted on the output shaft of the power part and meshes with the rack, so that the rack moves forward when the power part drives the gear to rotate Or move backward, so that the drum 21 extends or retracts into the housing 20 . Optionally, the rack extends in the front-rear direction and is mounted on the support, the power part is mounted on the first frame 25, and the gear is mounted on the output shaft of the power part and meshes with the rack, so that when the power part drives the gear to rotate, the gear rotates along the The rack moves forward or backward, thereby extending or retracting the drum 21 from the housing 20 .

In some embodiments of the present invention, as shown in FIG. 2 to FIG. 5 , the power device 30 may be a direct drive motor, and the direct drive motor is fixed on the first frame 25 to move back and forth following the first frame 25 and the drum 21 . The direct drive motor is located behind the drum 21, and the drum 21 is connected to the output shaft of the direct drive motor. Direct-drive motor is the abbreviation of direct-drive motor, which mainly means that the motor does not need to go through a transmission device (such as a transmission belt, etc.) when driving a load. The direct drive motor can achieve quietness, energy saving, stability and strong power. That is to say, the direct drive motor is directly connected to the drum 21, which has the advantages of high transmission efficiency, low vibration and noise, etc., and can solve the shortcomings of the traditional clothes dryer 1, such as low efficiency and high noise. Moreover, the power device 30 that drives the rotation of the drum 21 is arranged to extend or retract synchronously with the drum, so as to ensure the reliability of power transmission and to make the structure simple and compact.

In other embodiments of the present invention, as shown in FIG. 7 , the power unit 30 may include a drive unit, a transmission unit 33 and a clutch 34 . The driving device can be installed on the support, the transmission device 33 is arranged between the driving device and the clutch 34, and the clutch 34 is arranged behind the drum 21 and connected with the drum 21, so that the driving device drives the drum through the transmission device 33 and the clutch 34. 21 turns. Specifically, the driving device may be a motor, and the transmission device 33 may be a belt transmission device. The belt transmission device includes a driving pulley, a driven pulley and a belt, the driving pulley is installed on the output shaft of the motor, the driven pulley is coaxially arranged with the drum 21, and the belt is arranged on the driving pulley and the driven pulley. Through the connection and disconnection of the clutch 34, the power of the drum 21 can be turned on and off, so that the power source does not follow the drum 21 to move back and forth, and the reliability of the device is improved. In some optional embodiments, the belt transmission device includes a driving pulley, an intermediate pulley, a driven pulley and two belts, the driving pulley is mounted on the output shaft of the motor, and the driven pulley is coaxially arranged with the drum 21, One belt is set on the driving pulley and the intermediate pulley, and the other belt is set on the intermediate pulley and the driven pulley. In some optional embodiments of the present invention, the direct drive motor can also be mounted on the housing and connected to the drum through a clutch structure.

In some embodiments of the present invention, the pick-and-place door 23 is a translation sliding cover structure. The two front and rear extending edges of the clothes pick-and-place opening 22 are provided with rails extending in the front-rear direction, and the left and right sides of the pick-and-place door 23 are mounted on the two rails. The front end of the pick-and-place door 23 is provided with a handle, and the handle can be a groove formed on the outer surface of the pick-and-place door 23 to manually open or close the clothes pick-and-place port 22 . In some preferred embodiments of the present invention, as shown in FIG. 6 , a limit lock 27 is provided in the housing 20 , and the limit lock 27 is located on the upper side of the pick-and-place door 23 . When the drum 21 is extended, the limit lock 27 obtains a signal to extend the lock tongue, and the lock tongue acts on the pick-and-place door 23 to limit the outward movement of the pick-and-place door 23, so that the laundry can be opened while the drum 21 is extended. mouth 22. After the drum 21 is retracted into the housing 20 , or when the drum 21 is ready to rotate, the limit lock 27 receives a signal to retract the latch to release the restriction on the movement of the pick-and-place door 23 , and the pick-and-place door 23 rotates with the drum 21 . Further, the outer surface of the pick and place door body 23 is provided with a lock tongue insertion groove 28 for the lock tongue to be inserted, and the lock tongue can be inserted into the lock tongue insertion groove 28 to restrict the movement of the pick and place door body 23 . In some alternative embodiments of the present invention, the opening form of the roller door can be changed, for example, the pick-and-place door body 23 can be rotatably installed on the roller 21 around an axis extending back and forth. Further, the pick-and-place door body 23 can include left and right Set of two halves.

In some embodiments of the present invention, the main fan 44 may include blades. The fan blade can be installed on the above-mentioned driving device, or the fan blade can be connected to the above-mentioned driving device through the transmission device 33, that is, the rotation of the fan blade and the rotation of the drum 21 can use a driving device, and the driving device can be a motor.

In some embodiments of the present invention, as shown in FIG. 2 and FIG. 8 , the air inlet structure may include a plurality of air inlet holes (not shown), and further, the plurality of air inlet holes may be arranged on a cover plate, The cover plate is an air inlet cover 53 , and the air inlet cover 53 can be installed on the air inlet through hole opened 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 includes a plurality of air outlet holes (not shown). Further, a plurality of air outlet holes can also be provided on a cover plate, which is an air outlet cover 54 , and the air outlet cover 24 can be installed on the air outlet through holes opened on the rear wall of the front end cover 24 . The air inlet structure can be arranged at the center of the rear wall of the front end cover 24, and the air outlet structure is arranged above the air inlet structure, which can make the temperature drying air distribution in the drum 21 more uniform and improve the drying effect. On the basis of understanding this embodiment, those skilled in the art should easily know the positions of the air inlet structure, the air outlet structure, the air inlet hole, the air outlet hole, the air inlet through hole and the air outlet through hole, so there is no illustration in the drawings. marked.

In other embodiments of the present invention, the air outlet structure is disposed on the periphery of the air inlet structure, so as to provide airflow into the drum from multiple positions on the periphery of the air inlet structure. For example, the air outlet structure is a second air outlet structure, and the second air outlet structure includes a plurality of air outlets, each air outlet can be an arc-shaped outlet, and the plurality of air outlets are evenly distributed on the front end cover 24 along the circumferential direction of the drum 21 . on the rear wall. The heating device 52 can be in the form of an annular structure 241 and is disposed coaxially with the drum 21 to improve the heating effect. In some embodiments of the present invention, the air outlet structure includes both a first air outlet structure and a second air outlet structure. The first air outlet structure may be a circular air outlet structure, and the second air outlet structure may be an annular air outlet structure, that is, the air outlet structure may be 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 arranged on the air flow path between the air inlet structure and the air outlet structure. The infrared heater has a high emissivity, and the infrared heater can directly radiate heat to the clothes in the drum 21 . The auxiliary fan 51 blows the remaining heat of the auxiliary heating device 52 into the drum 21 for drying the laundry. The auxiliary fan 51 may be a centrifugal fan, an axial flow fan or a diagonal flow fan.

In some embodiments of the present invention, a lint filter 45 is provided on the air duct system 11 for filtering lint. The lint filter 45 is arranged on the first part 111 of the air duct system 11 , that is, the lint filter 45 is also arranged on the front end cover 24 . The lint filter 45 is disposed on the front end cover 24 to facilitate cleaning of impurities in the lint filter 45 .

In some embodiments of the present invention, as shown in FIGS. 9 and 10 , a gasket is provided on the inner wall of the plug tube 48 and/or the outer wall of the plug tube 47 . During the retracting process of the drum 21, the plug tube 47 moves along the tapered surface and is sealed with the plug tube 48 by pressing the gasket to achieve automatic disconnection, connection and sealing during connection. Further, the plug tube 48 is provided with a blocking surface that prevents the plug tube 47 from continuing to be inserted inward. In some embodiments of the present invention, as shown in FIG. 11 , on two opposite surfaces of the first suction member 57 and the second suction member 58, an elastic sealing member may be provided on one of the surfaces, or the two Elastic seals are arranged on the surface to ensure sealing performance. Both the first attracting member 57 and the second attracting member 58 can be magnetic attracting members such as magnets. Further, the first connection structure 15 can also adopt the structure of the second connection structure 16 .

In some embodiments of the present invention, the casing 20 is provided with a water box groove, and the water box groove is located above the drum 21 . Usually, the water box groove is disposed on the front panel of the casing 20 and is close to the top plate of the casing 20 . Area. A water box is arranged in the water box groove, and the water box groove and the water box are gap-fitted, and the water box can be pulled out from the water box groove or inserted into the water box groove. The top of the water box is provided with an opening to receive the water discharged from the drain pipe on the lower side of the evaporator 71; when the water entering the water box fills the water box, the water will overflow from the top opening of the water box and flow to the water box in the slot. The water box groove is provided with an overflow hole, and the overflow hole is generally set at the bottom of the water box groove to avoid water accumulation in the water box groove. The overflow hole is communicated with the diversion channel through the overflow pipe. Therefore, when the water in the water box overflows into the water box groove, the water in the water box groove can enter the guide channel through the overflow hole and the overflow pipe, and the water flowing out of the guide channel can be used to clean the evaporator 71 or the lint filter. 45 and other structures to avoid water accumulation in the water tank groove. A water pump is arranged on the drain pipe, a water storage tank is arranged on the lower side of the evaporator 71, and the water in the water storage tank is transported to the water box by the water pump.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

A clothes dryer, comprising a casing and a drum provided in the casing, the drum being used to provide storage space for clothes, and characterized in that it also includes a main drying system;

The main drying system includes a heat pump system, a main fan, and an air duct system for defining a drying air duct; the heat pump system includes an evaporator and a condenser, and the air duct system is configured to direct the drying airflow , so that after the drying airflow flows out of the drum under the action of the main fan, it flows through the evaporator and the condenser in sequence, and then circulates into the drum.
The clothes dryer of claim 1, wherein

The main drying system further includes a semiconductor cooling and heating module, the semiconductor cooling and heating module includes a cooling end and a heating end, and the semiconductor cooling 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 to be condensed, then flows through the cooling end to be condensed again, then passes through the heating end to be heated, and then passes through the condenser. After being reheated, it enters the drum.
The clothes dryer of claim 2, wherein

The semiconductor cooling and heating module further includes a semiconductor cooling fin; the cooling end is a cooling device disposed on the cold end surface of the semiconductor cooling fin, and the cooling device has cooling fins; the heating end It is a heat transfer device disposed on the hot end face of the semiconductor refrigeration sheet, and the heat transfer device has heat transfer fins.
The clothes dryer of claim 1, wherein

The peripheral wall of the drum is provided with an openable and closable clothing take-and-place port;

The drum is arranged to have a retracted state retracted into the housing and an extended state at least partially outside the housing, and in the extended state a portion of the laundry access opening or all on the outside of the housing.
The clothes dryer of claim 4, wherein

The drum is slidably arranged in the casing along the front and rear directions; the front end of the drum is provided with a front end cover;

The air duct system includes a first part arranged on the front end cover and a second part arranged in the casing, the first part communicates with the front end of the drum, and the first part and the second part A first connection structure is arranged therebetween, and a second connection structure is arranged between the rear end of the drum and the second part;

Both the first connection structure and the second connection structure are configured to allow the drum to move forward so that the drum is in an extended state, and when the drum is in the retracted state, the drying Dry air duct is connected.
The clothes dryer of claim 5, wherein

The first connection 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 provided on the inner wall of the plug tube and/or on the outer wall of the plug tube; or,

The first connection structure includes a telescopic tube and a suction assembly, the suction assembly includes a first suction member and a second suction member that attract each other, and the first suction member is arranged at one end of the telescopic tube , one of the other end of the telescopic tube and the second suction part is arranged on the first part, and the other is arranged on the second part.
The clothes dryer of claim 5, wherein

The second connection 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 provided on the inner wall of the plug tube and/or on the outer wall of the plug tube; or,

The second connection structure includes a telescopic tube and a suction assembly, the suction assembly includes a first suction member and a second suction member that attract each other, and the first suction member is arranged at one end of the telescopic tube , one of the other end of the telescopic tube and the second suction part is arranged at the second part, and the other is arranged at the rear end of the drum.
The clothes dryer of claim 1, further comprising an auxiliary drying system,

The drum extends in the front-rear direction, and the front end of the drum is provided with a front end cover; the air duct system is configured to guide the drying airflow, so that the drying airflow is The rear end of the drum circulates into the drum;

The auxiliary drying system is arranged in the front end cover, and the auxiliary drying system is configured to suck air flow from the front end of the drum, heat the air flow, and make the heated air flow from the front end of the drum into the drum.
The clothes dryer of claim 8, wherein

The auxiliary drying system includes an auxiliary fan and a heating device, an air inlet structure and an air outlet structure are provided on the rear wall of the front end cover, and the auxiliary fan is configured to promote the gas in the drum to pass through the air inlet structure. Enter into the front end cover, and after exchanging heat with the heating device, enter the drum again from the air outlet structure;

The air inlet structure is arranged at the central position 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 as to provide air to the drum from multiple positions on the periphery of the air inlet structure. airflow.
The clothes dryer of claim 1, wherein

The drum extends in the front-rear direction, and the front end of the drum is provided with a front end cover; the air duct system is configured to guide the drying airflow, so that the drying airflow is The rear end of the drum circulates into the drum;

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

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