A clothes drying device

Abstract

An embodiment of the present application provides a clothes drying device, which includes a drying drum, a dehumidification air duct, a dehumidification air duct, a drying air duct, a heating device, a condensation device, a fresh air inlet communicated with the drying air duct, a fresh air outlet communicated with the dehumidification air duct, and a fresh air switching device for switching the air flow path; the air flow path includes a first air flow path and a second air flow path. The first air flow path is that both the fresh air inlet and the fresh air outlet are closed, and the air flow circulates internally in the drying air duct, the drying drum and the dehumidification air duct; the second air flow path is that the dehumidification air duct and the drying air duct are blocked from each other, the drying air duct intakes air from the fresh air inlet, and the air flow dehumidified by the condensation device is discharged from the fresh air outlet. The clothes drying device according to the embodiment of the present application can flexibly switch between the first air flow path and the second air flow path through the fresh air switching device, so that the clothes drying device can selectively operate in an external circulation mode or an internal circulation mode, improving the clothes drying efficiency while reducing the impact on the indoor environment.

Description

Technical Field

[0001] This application relates to the technical field of clothing care, and particularly to a clothes drying device. Background Art

[0002] In related technologies, clothes drying devices use an internal circulation method to dry clothes, that is, the drying air flow circulates between the drying drum and the circulation air duct. The air flow coming out of the drying drum is humid and hot air, and the circulation air duct dehumidifies the humid and hot air flow, and then heats the dehumidified air flow. The heated hot air flow enters the drying drum again. This clothes drying method has low drying efficiency and a long drying time. Summary of the Invention

[0003] In view of this, embodiments of this application are expected to provide a clothes drying device that improves drying efficiency.

[0004] Embodiments of this application provide a clothes drying device, including:

[0005] A drying drum;

[0006] A dehumidification air duct and a drying air duct located downstream of the dehumidification air duct along the air flow direction;

[0007] A heating device, arranged in the drying air duct;

[0008] A condensation device, arranged in the dehumidification air duct;

[0009] A fresh air inlet, communicating with the drying air duct;

[0010] A fresh air outlet, communicating with the dehumidification air duct;

[0011] A fresh air switching device, used to switch the air flow path; the air flow path includes:

[0012] A first air flow path: both the fresh air inlet and the fresh air outlet are closed, and the air flow circulates internally in the drying air duct, the drying drum and the dehumidification air duct;

[0013] A second air flow path: the dehumidification air duct and the drying air duct are blocked from each other, the drying air duct takes in air from the fresh air inlet, and the air flow dehumidified by the condensation device is discharged from the fresh air outlet.

[0014] In some embodiments, the clothes drying device includes a base device, the base device has a receiving chamber, at least a part of the fresh air switching device is arranged in the receiving chamber, and the receiving chamber is divided into a first sub-chamber and a second sub-chamber, the heating device is arranged in the first sub-chamber, and the condensation device is arranged in the second sub-chamber.

[0015] In some embodiments, the base device includes a base and a cover. The base is provided with a recessed area, and the cover is disposed on the top side of the recessed area to define the accommodation chamber. The fresh air inlet is provided on the cover.

[0016] In some embodiments, the fresh air outlet is provided on the cover, and the fresh air inlet and the fresh air outlet are located on the left and right sides of the cover.

[0017] In some embodiments, the fresh air outlet is provided at the bottom of the base, and the air is discharged from the bottom of the base device.

[0018] In some embodiments, the fresh air switching device includes a damper and a power mechanism. The damper is rotatably disposed between the heating device and the condensing device, and the power mechanism drives the damper to swing to selectively conduct or block the first sub-chamber and the second sub-chamber.

[0019] In some embodiments, the rotation axis of the damper is along the vertical direction, and the power mechanism is disposed on the top side of the cover.

[0020] In some embodiments, the cover includes a cover plate and a box body. The cover plate is provided with an avoidance groove, and the box body is disposed at the avoidance groove. The box body is provided with a first space, and a first ventilation hole is provided on the bottom wall of the first space. The first space communicates the fresh air inlet and the first ventilation hole.

[0021] The fresh air switching device includes a first baffle for blocking the first ventilation hole. The first baffle is connected to the damper, and the power mechanism drives the damper and the first baffle to rotate.

[0022] In some embodiments, a second space isolated from the first space is provided in the box body. A second ventilation hole is provided on the bottom wall of the second space. The second space communicates the fresh air outlet and the second ventilation hole.

[0023] The fresh air switching device includes a second baffle for blocking the second ventilation hole. The second baffle is connected to the damper, and the power mechanism drives the damper and the second baffle to rotate.

[0024] In some embodiments, one of the fresh air inlet and the fresh air outlet is provided on the left side wall of the box body, and the other is provided on the right side wall of the box body.

[0025] In some embodiments, the box body is provided with an axial hole penetrating through the box body in the up-down direction, and the power mechanism is arranged on the top side of the box body; a rotating shaft is formed at the top end of the air door, the rotating shaft penetrates through the axial hole, and the power mechanism drives the rotating shaft to rotate.

[0026] In some embodiments, the number of the air doors is plural, and the plural air doors are arranged in the left-right direction of the clothes drying device; the power mechanism includes a motor, a transmission rod and a rocker arm. One end of each rocker arm is movably connected to the transmission rod, and the other end is connected to the rotating shaft. The transmission rod moves axially under the drive of the motor and drives the rocker arm to swing around the rotation axis of the air door.

[0027] In some embodiments, the clothes drying device includes a control device and a humidity detection device. The humidity detection device is at least used for detecting the humidity value of the air flow on the air flow path, and the control device is used for obtaining the ambient humidity value and controlling the fresh air switching device to switch the air flow path according to the difference between the ambient humidity value and the air flow humidity value.

[0028] In the starting stage of the clothes drying program, the clothes drying device according to the embodiment of the present application can be switched to the second air flow path through the fresh air switching device, and the clothes drying device operates in an external circulation mode. Fresh air in the environment enters the drying air duct through the fresh air inlet, and after being heated by the heating device, it forms a hot air flow. The humidity of the hot air flow is relatively low. During the process of the hot air flow flowing through the clothes drying cylinder, the heat and mass transfer efficiency can be accelerated, and the clothes drying efficiency can be improved. The humid hot air flow after flowing through the clothes drying cylinder is condensed and dehumidified by the condensing device and then discharged from the fresh air outlet and enters the indoor environment. That is to say, the air flow discharged to the surrounding environment has been condensed and dehumidified by the condensing device, so it will not significantly affect the indoor temperature and humidity and reduce the impact on the indoor environment.

[0029] When the humidity of the clothes drying air flow is not high, it can be switched to the first air flow path through the fresh air switching device, and the clothes drying device operates in an internal circulation mode. In this way, on the one hand, during the internal circulation of the air flow, heat loss can be reduced, energy consumption can be lowered, and efficiency can be improved. On the other hand, the impact on the indoor environment can also be reduced.

[0030] The clothes drying device according to the embodiment of the present application flexibly switches the first air flow path or the second air flow path through the fresh air switching device, so that the clothes drying device can selectively operate in an external circulation mode or an internal circulation mode, improving the clothes drying efficiency and reducing the impact on the indoor environment at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a clothes drying device according to an embodiment of the present application, in which the side plate on the left side of the box body is omitted;

[0032] Figure 2 is Figure 1 a schematic diagram of the structure shown with some structures of the base device omitted, the heating device and the condensing device omitted;

[0033] Figure 3 is Figure 2 a schematic diagram of another perspective of the structure shown;

[0034] Figure 4 a schematic diagram of the cooperation of the fresh air switching device, the cover body and the chassis according to an embodiment of the present application, wherein the fresh air switching device switches the air flow path to the first air flow path;

[0035] Figure 5 is Figure 4 a schematic diagram of the structure shown in another state, wherein the fresh air switching device switches the air flow path to the second air flow path;

[0036] Figure 6 is Figure 4 a schematic diagram of the structure shown with the cover body omitted;

[0037] Figure 7 is Figure 6 a schematic diagram of the structure shown in another state;

[0038] Figure 8 a schematic diagram of the structure of the fresh air switching device according to an embodiment of the present application;

[0039] Figure 9 a schematic diagram of the structure of the box body according to an embodiment of the present application;

[0040] Figure 10 is Figure 9 a schematic diagram of another perspective of the structure shown;

[0041] Figure 11 is Figure 9 a schematic diagram of the structure shown with the top wall omitted.

[0042] Explanation of reference numerals

[0043] Dryer drum 1; Box body 2;

[0044] Condensing device 3; Heating device 4;

[0045] Fresh air switching device 5; Motor 51; Transmission assembly 52; Transmission rod 521; Projection 5211; Rocker arm 522; Chute 522a; Damper 53; Rotating shaft 531; First baffle 54; Second baffle 55;

[0046] Base device 6; accommodation chamber 6a; first sub-chamber 6a'; second sub-chamber 6a''; base 61; cover 62; cover plate 621; box body 622; first space 622a; first ventilation hole 622e; fresh air inlet 622c; second space 622b; second ventilation hole 622f; fresh air outlet 622d; partition 6221; shaft hole 6221a; chassis 63; mounting bracket 64; Detailed implementation manners

[0047] The following further describes in detail the implementation manners of the present application in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0048] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0049] The embodiments of the present application provide a drying device. Please refer to Figure 1 、 Figure 2 and Figure 3 , including a box body 2, a drying cylinder 1, a dehumidification air duct, a drying air duct, a heating device 4, a condensation device 3, and a fan.

[0050] The drying cylinder 1 is arranged in the box body 2. The space inside the drying cylinder 1 is a drying cavity, and clothes are placed in the drying cavity. The box body 2 serves as the exterior part of the drying device.

[0051] Among them, the drying air duct is located downstream of the dehumidification air duct along the air flow direction. That is to say, the air flow first flows through the dehumidification air duct and then through the drying air duct.

[0052] The heating device 4 is arranged in the drying air duct and is used to heat the air flow.

[0053] The condensation device 3 is arranged in the dehumidification air duct and is used to condense and dehumidify the air flow.

[0054] Please refer to Figure 3 , Figure 3 . In it, the dotted line A indicates the air flow flowing in the drying air duct, and the dotted line B indicates the air flow flowing in the dehumidification air duct.

[0055] It should be noted that the installation position of the fan is not limited. For example, it can be arranged in the drying air duct or the dehumidification air duct.

[0056] Please refer to Figure 1 and Figure 2 、 Figure 4 and Figure 5 , the drying device according to the embodiment of the present application further includes a fresh air inlet 622c (refer to Figure 10 ), a fresh air outlet 622d and a fresh air switching device 5.

[0057] The fresh air inlet 622c is communicated with the drying air duct; the fresh air outlet 622d is communicated with the dehumidifying air duct.

[0058] The fresh air switching device 5 is used to switch the air flow path.

[0059] Among them, the air flow path includes a first air flow path and a second air flow path.

[0060] First air flow path: Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6 , both the fresh air inlet 622c and the fresh air outlet 622d are closed, and the air flow circulates internally in the drying air duct, the drying drum 1 and the dehumidifying air duct. Figure 1 The dotted lines and arrows in

[0061] Figure 5 Figure 7 and Figure 7 show the internal circulation path of the drying air flow. That is, when the air flow flows along the first air flow path, the drying device adopts an internal circulation mode.

[0061] Second air flow path: Please refer to Figure 5 and Figure 7 , the dehumidifying air duct and the drying air duct are blocked from each other, that is, the air flow in the dehumidifying air duct cannot enter the drying air duct. The drying air duct takes in air from the fresh air inlet 622c, and the air flow dehumidified by the condensation device 3 is discharged from the fresh air outlet 622d. Specifically, the fresh air flows through the fresh air inlet 622c, the heating device 4, the drying drum 1, the condensation device 3 and the fresh air outlet 622d in sequence. When the air flow flows along the second air flow path, the drying device adopts an external circulation mode.

[0062] In the related art, the drying drum only has an internal circulation mode, and the air flow always circulates internally in the drying air duct, the drying drum and the dehumidifying air duct. At the beginning stage of the drying program, the moisture content of the clothes is relatively high, and there is more water vapor in the air flow. When the hot and humid air flow passes through the condensation device, there will still be more water vapor that cannot be condensed and precipitated in time. Therefore, the humidity of the air flow entering the drying drum is relatively high, resulting in the moisture on the clothes not being easily evaporated, the drying speed being slow, and the drying efficiency being low.

[0063] In the embodiments of the present application, when the humidity of the air flow is relatively high, for example, at the beginning stage of the drying program, the fresh air switching device 5 can be used to switch to the second air flow path, and the drying device operates in an external circulation mode. Fresh air in the environment enters the drying air duct through the fresh air inlet 622c, and after being heated by the heating device 4, it forms a hot air flow with a relatively low humidity. During the process of the hot air flow flowing through the drying drum 1, the heat and mass transfer efficiency can be accelerated, and the drying efficiency can be improved. The humid and hot air flow after flowing through the drying drum 1 is condensed and dehumidified by the condensing device 3 and then discharged from the fresh air outlet 622d and enters the indoor environment. That is to say, the air flow discharged into the surrounding environment has been condensed and dehumidified by the condensing device 3, so it will not significantly affect the indoor temperature and humidity and reduce the impact on the indoor environment.

[0064] Alternatively, when it is necessary to remove odors, the drying device can also operate in an external circulation mode to quickly remove the odors in the drying drum 1 through fresh air.

[0065] When the humidity of the drying air flow is not high, the fresh air switching device 5 can be used to switch to the first air flow path, and the drying device operates in an internal circulation mode. In this way, on the one hand, during the internal circulation of the air flow, heat loss can be reduced, energy consumption can be lowered, and efficiency can be improved. On the other hand, the impact on the indoor environment can also be reduced.

[0066] It should be noted that a filter screen is configured in the dehumidification air duct, and the air flow in the dehumidification air duct is filtered by the filter screen before flowing through the dehumidification device, reducing the risk of lint clogging the condensing device 3. The air flow discharged into the room by the drying device of the embodiments of the present application has also been filtered, so the possibility of the air flow polluting the indoor air is reduced.

[0067] The drying device of the embodiments of the present application can flexibly switch between the first air flow path and the second air flow path through the fresh air switching device 5, enabling the drying device to selectively operate in an external circulation mode or an internal circulation mode, improving the drying efficiency while also reducing the impact on the indoor environment.

[0068] Exemplarily, the drying device includes a control device and a humidity detection device. The humidity detection device is at least used to detect the humidity value of the air flow on the air flow path, for example, to detect the humidity value of the air flow on the first air flow path or the second air flow path.

[0069] The control device is used to obtain the surrounding environment humidity value and control the fresh air switching device 5 to switch the air flow path according to the surrounding environment humidity value and the above-mentioned air flow humidity value.

[0070] In this embodiment, the drying device can automatically switch the air flow path according to the surrounding environment humidity value and the above-mentioned air flow humidity value, having a good humidity self-adaptive effect and making the drying device more intelligent.

[0071] The humidity detection device can be an independent temperature sensor or an integrated temperature and humidity sensor integrating temperature and humidity detection functions, which is not limited herein.

[0072] It should be noted that the manner in which the control device controls the fresh air switching device 5 to switch the air flow path according to the difference is not limited.

[0073] For example, when the air flow humidity value is greater than the ambient humidity value or greater than a certain numerical ratio of the ambient humidity value, the control device controls the fresh air switching device 5 to switch to the second air flow path. Otherwise, the control device controls the fresh air switching device 5 to switch to the first air flow path. For example, if the humidity value detected by the humidity detection device is x1 and the ambient humidity value is x2, in some embodiments, it can be set in the control device that when x1>x2, or x1>x2*(1 + y%), where 0 < y, the control device controls the fresh air switching device 5 to switch to the second air flow path.

[0074] It should be noted that the manner in which the control device obtains the ambient humidity value is not limited. For example, it can be obtained according to the humidity sensor for detecting the ambient humidity value, or the current ambient humidity value can be obtained through the Internet.

[0075] The installation position of the humidity detection device is not limited. For example, the humidity detection device is installed in the drying air duct or in the dehumidifying air duct.

[0076] Exemplarily, the humidity detection device is installed on the air outlet side of the condensing device 3 to detect the humidity of the air flow passing through the condensing device 3. It can be understood that the air flow on the air outlet side of the condensing device 3 is selectively discharged into the surrounding environment from the fresh air outlet 622d, or enters the drying drum 1 through the drying air duct. The humidity of the air flow remains basically unchanged during the flow in the drying air duct. Therefore, detecting the humidity of the air flow on the air outlet side of the condensing device 3 can be more accurate.

[0077] The specific type of the heating device 4 is not limited and can be a resistance wire. The specific type of the condensing device 3 is not limited and can be a water-cooling device.

[0078] Exemplarily, the heating device 4 is a condenser and the condensing device 3 is an evaporator. The condenser and the evaporator are components of a heat pump system. That is to say, in this embodiment, the clothes drying device is a heat pump type clothes drying device.

[0079] Exemplarily, the heating device 4 and the condensing device 3 are arranged along the front-rear direction of the clothes drying device, and the heating device 4 is located behind the condensing device 3.

[0080] Exemplarily, please refer to Figure 2 and Figure 3, the drying device includes a base device 6, the base device 6 has a receiving chamber 6a, and both the condensation device 3 and the heating device 4 are arranged in the receiving chamber 6a. The air flow in the first air flow path flows through the receiving chamber 6a.

[0081] Please continue to refer to Figure 2 and Figure 3 , at least a part of the fresh air switching device 5 is arranged in the receiving chamber 6a, and divides the receiving chamber 6a into a first sub-chamber 6a' and a second sub-chamber 6a'', the heating device 4 is arranged in the first sub-chamber 6a', and the condensation device 3 is arranged in the second sub-chamber 6a'', that is to say, the fresh air switching device 5 is arranged between the heating device 4 and the condensation device 3.

[0082] The fresh air inlet 622c is used to introduce fresh air into the space between the heating device 4 and the fresh air switching device 5 in the first sub-chamber 6a'. The fresh air outlet 622d is used to lead out the air flow in the space between the condensation device 3 and the fresh air switching device 5 in the second sub-chamber 6a''.

[0083] The fresh air switching device 5 is used to block or conduct the air flow path between the heating device 4 and the condensation device 3.

[0084] In this embodiment, there is no need to make major structural changes to the drying air duct and the condensation air duct of the existing drying device, and only the fresh air switching device 5 needs to be added between the condensation device 3 and the heating device 4, which is convenient for upgrading the existing drying device at a relatively low cost.

[0085] Exemplarily, please refer to Figure 2 , the base device 6 includes a base 61 and a cover 62, the base 61 is provided with a recessed area, the top side of the recessed area is open, and the cover 62 is covered on the top side of the recessed area to define the receiving chamber 6a.

[0086] During the assembly process, the condensation device 3 and the heating device 4 are placed in the recessed area, and then the cover 62 is covered.

[0087] Exemplarily, please refer to Figure 4 , Figure 5 , Figure 6 and Figure 7 , the base device 6 includes a chassis 63 arranged in the receiving chamber 6a, the chassis 63 is placed on the bottom surface of the recessed area. The heating device 4 and the condensation device 3 are both placed on the chassis 63.

[0088] Exemplarily, please refer to Figure 10 and Figure 11 , the fresh air inlet 622c is arranged on the cover 62. It should be noted that the space inside the box body 2 is not a sealed space, and there is an air flow exchange between the air outside the box body 2 and the air inside the box body 2.

[0089] In some embodiments, the air inside the cabinet 2 enters the drying air duct from the fresh air inlet 622c. The air outside the cabinet 2 is replenished into the cabinet 2. That is to say, the drying air duct introduces fresh air from inside the cabinet 2. In other embodiments, fresh air holes are provided on the left support plate or the right support plate of the cabinet 2, and the air outside the cabinet 2 flows through the fresh air holes to the fresh air inlet 622c. That is to say, the drying air duct directly introduces fresh air from outside the cabinet 2.

[0090] The position of the fresh air outlet 622d is not limited as long as it can discharge the air flow.

[0091] Exemplarily, in some embodiments, please refer to Figure 9 、 Figure 10 and Figure 11 , the fresh air outlet 622d is provided on the cover 62. That is to say, both the fresh air outlet 622d and the fresh air inlet 622c are provided on the cover 62. In this way, there is no need to open holes at other positions on the base, and the base of the existing drying equipment can be used.

[0092] Exemplarily, please refer to Figure 11 , the fresh air inlet 622c and the fresh air outlet 622d are located on the left and right sides of the cover 62. For example, the fresh air inlet 622c is located on the left side of the cover 62, and the fresh air outlet 622d is located on the right side of the cover 62; or, the fresh air inlet 622c is located on the right side of the cover 62, and the fresh air outlet 622d is located on the left side of the cover 62. In this way, the air flow interference between the fresh air inlet 622c and the fresh air outlet 622d can be reduced, and the probability that the air flow from the fresh air outlet 622d enters the fresh air inlet 622c again can be decreased.

[0093] In other embodiments, the fresh air outlet 622d is provided at the bottom of the base 61. When the fresh air outlet 622d is opened, the dehumidified air is discharged from the bottom of the base device 6. In this way, the air can be directly discharged from the drying equipment through the base device 6; in addition, the fresh air outlet 622d is not exposed on the appearance surface of the drying equipment, and the appearance of the drying equipment will not be affected.

[0094] The specific structure of the fresh air switching device 5 is not limited.

[0095] Exemplarily, please refer to Figure 8 , the fresh air switching device 5 includes a damper 53 and a power mechanism. The damper 53 is rotatably arranged between the heating device 4 and the condensing device 3, and the power mechanism serves as the power source for the rotation of the damper 53. The power mechanism drives the damper 53 to swing to selectively conduct or block the first sub-chamber 6a' and the second sub-chamber 6a″. For example, please refer to Figure 7 , Figure 7The state shown is the state where the damper 53 is swung by the power mechanism to block the first sub-chamber 6a' and the second sub-chamber 6a″. At this time, the drying air duct and the dehumidifying air duct are blocked from each other. Please refer to Figure 6 , Figure 6 The state shown is the state where the damper 53 is swung by the power mechanism to conduct the first sub-chamber 6a' and the second sub-chamber 6a″. At this time, the drying air duct and the dehumidifying air duct are in communication with each other.

[0096] The shape of the damper 53 is not limited. For example, the damper 53 is generally in the shape of a rectangular plate.

[0097] The extending direction of the rotation axis of the damper 53 is not limited and can be along the front-back direction, left-right direction, up-down direction, etc.

[0098] Exemplarily, please refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , the rotation axis of the damper 53 is along the vertical direction, and the power mechanism is arranged on the top side of the cover 62. In this way, the damper 53 only needs to occupy a relatively small space along the front-back direction. In addition, the top side of the cover 62 has a relatively large installation space, with enough space to install the power mechanism.

[0099] The number of dampers 53 is not limited and can be one or more. Among them, "more than one" means not less than two. A plurality of dampers 53 are arranged along the left-right direction of the clothes drying device.

[0100] In the embodiment of the present application, the case where the number of dampers 53 is more than one is described as an example. A plurality of dampers 53 are arranged side by side along the left-right direction of the clothes treatment device. In this way, the size of a single damper 53 can be reduced, and the space required for the rotation of a single damper 53 can be reduced.

[0101] Exemplarily, please refer to Figure 4 and Figure 5 , the cover 62 includes a cover plate 621 and a box body 622. The cover plate 621 is provided with an avoidance groove, and the box body 622 is arranged at the avoidance groove. In the top view projection of the clothes drying device, the box body 622 is located between the heating device 4 and the condensing device 3.

[0102] Please refer to Figure 11 , the box body 622 is provided with a first space 622a. The bottom wall of the first space 622a is provided with a first ventilation hole 622e. The first space 622a communicates the fresh air inlet 622c and the first ventilation hole 622e. In the top view projection of the clothes drying device, the first ventilation hole 622e is located between the heating device 4 and the damper.

[0103] Exemplarily, please refer to Figure 6 , Figure 7 and Figure 8, the fresh air switching device 5 includes a first baffle 54 for blocking the first ventilation hole 622e. The first baffle 54 is connected to the air damper 53, and the power mechanism drives the air damper 53 and the first baffle 54 to rotate. That is to say, the air damper 53 and the first baffle 54 rotate simultaneously. For example, they rotate forward simultaneously or rotate backward simultaneously. In this way, the control can be simplified, and the synchronization of the two can be ensured, improving the reliability.

[0104] Exemplarily, the first baffle 54 is located below the box body 622. That is to say, the first baffle 54 is not arranged in the first space 622a, but is exposed in the drying air duct. The first baffle 54 is roughly attached to the bottom wall of the first space 622a. When the clothes drying device adopts the internal circulation, please refer to Figure 4 and Figure 6 , the first baffle 54 rotates to a position blocking the first ventilation hole 622e, and the air damper 53 rotates to a position conducting the drying air duct and the dehumidifying air duct. When the clothes drying device adopts the external circulation, please refer to Figure 5 and Figure 7 , the first baffle 54 rotates to a position avoiding the first ventilation hole 622e, and the air damper 53 rotates to a position blocking the air flow. The fresh air flows through the fresh air inlet 622c, the first space 622a, and the first ventilation hole 622e in sequence and then enters the drying air duct.

[0105] Exemplarily, please refer to Figure 11 , a second space 622b isolated from the first space 622a is arranged in the box body 622. That is to say, there is no air flow exchange between the first space 622a and the second space 622b. For example, a partition 6221 is arranged in the box body 622, and the partition 6221 divides the space in the box body 622 into a first space 622a and a second space 622b.

[0106] The bottom wall of the second space 622b is provided with a second ventilation hole 622f, and the second space 622b communicates with the fresh air outlet 622d and the second ventilation hole 622f. In the top view projection of the clothes drying device, the second ventilation hole 622f is located between the condensation device 3 and the air damper. When the clothes drying device operates in the external circulation mode, the low-temperature dry air flow after being condensed and dehumidified by the condensation device 3 enters the second space 622b from the second ventilation hole 622f and then is discharged from the fresh air outlet 622d.

[0107] In this embodiment, a fresh air outlet 622d and a fresh air inlet 622c are simultaneously provided on the box body 622, with a high degree of integration. One of the fresh air inlet 622c and the fresh air outlet 622d is provided on the left side wall of the box body 622, and the other is provided on the right side wall of the box body 622. On the one hand, the fresh air inlet 622c and the fresh air outlet 622d are separated by a relatively long distance, reducing the air flow interference between them. On the other hand, it is convenient to open holes on the left side plate and / or the right side plate of the box body 2 to adapt to the air flow exchange between the fresh air inlet 622c and / or the fresh air outlet 622d and the external environment of the box body 2.

[0108] Please refer to Figure 6 、 Figure 7 and Figure 8 , the fresh air switching device 5 includes a second shutter 55 for blocking the second ventilation hole 622f. The second shutter 55 is connected to the air door 53, and the power mechanism drives the air door 53 and the second shutter 55 to rotate. That is to say, the air door 53 and the second shutter 55 rotate simultaneously. For example, they rotate forward simultaneously or rotate backward simultaneously. In this way, the control can be simplified, and it can ensure that both of them reach the position synchronously, improving the reliability.

[0109] Exemplarily, the second shutter 55 is located below the box body 622. That is to say, the second shutter 55 is not arranged in the second space 622b, but is exposed in the dehumidification dry air duct. The second shutter 55 is substantially attached to the bottom wall of the second space 622b. When the clothes drying device adopts the internal circulation, please refer to Figure 4 and Figure 6 , the second shutter 55 rotates to the position blocking the second ventilation hole 622f, and the air door 53 rotates to the position conducting the drying air duct and the dehumidification air duct. When the clothes drying device adopts the external circulation, please refer to Figure 5 and Figure 7 , the second shutter 55 rotates to the position avoiding the second ventilation hole 622f, and the air door 53 rotates to the position blocking the air flow. The air flow flowing through the condensation device 3 flows through the second ventilation hole 622f and the second space 622b in sequence, and then is discharged from the fresh air outlet 622d.

[0110] Exemplarily, please refer to Figure 11 , the box body 622 is provided with a shaft hole 6221a penetrating the box body 622 in the up and down direction. For example, the shaft hole 6221a is provided on the above-mentioned partition plate 6221. The shaft hole 6221a, the first space 622a, and the second space 622b are isolated from each other.

[0111] The power mechanism is arranged on the top side of the box body 622; please refer to Figure 6 、 Figure 7 and Figure 8 , a rotating shaft 531 is formed at the top end of the air door 53. The rotating shaft 531 passes through the shaft hole 6221a, and the power mechanism drives the rotating shaft 531 to rotate.

[0112] Exemplarily, the above-mentioned first baffle 54 and second baffle 55 are both connected to the rotating shaft 531, and the rotating shaft 531 drives the air damper 53, the first baffle 54 and the second baffle 55 to rotate synchronously.

[0113] Exemplarily, in order to facilitate the support of the air damper 53, please refer to Figure 5 , Figure 6 and Figure 7 , the base device includes a mounting bracket 64, the lower end of the air damper 53 is rotatably supported on the mounting bracket 64, and the mounting bracket 64 defines the installation space required for each air damper 53.

[0114] In some embodiments, the mounting bracket 64 and the chassis 63 are fixedly connected together to enhance the structural strength of the two.

[0115] The specific structure of the power mechanism is not limited. The power mechanism includes at least a motor 51.

[0116] In some embodiments, the motor 51 can directly drive the air damper 53 to rotate.

[0117] In other embodiments, the motor 51 indirectly drives the air damper 53 to rotate through a transmission assembly 52.

[0118] Exemplarily, please refer to Figure 6 , Figure 7 and Figure 8 , the power mechanism further includes a transmission rod 521 and a rocker arm 522. The transmission rod 521 is eccentrically arranged with respect to the axis of the rotating shaft 531. One end of each rocker arm 522 is movably connected to the transmission rod 521, and the other end is connected to the rotating shaft 531. The transmission rod 521 moves axially under the drive of the motor 51 and drives the rocker arm 522 to swing around the rotation axis of the air damper 53. In this embodiment, each rocker arm 522 and the transmission rod 521 constitute the transmission assembly 52.

[0119] In this embodiment, through the cooperation of the transmission rod 521 and the rocker arm 522, it is possible to synchronously drive all the air dampers 53 to rotate synchronously, with a simple and reliable structure and a relatively small installation space required.

[0120] In addition, through the same motor 51, it is possible to synchronously control the on-off of the air flow passages between the fresh air inlet 622c, the fresh air outlet 622d, the condensation device 3 and the heating device 4, which can ensure the synchronism of the three and improve the reliability.

[0121] The movable connection method between the rocker arm 522 and the transmission rod 521 is not limited. Exemplarily, please refer to Figure 8, the rocker arm 522 is provided with a chute 522a, and the transmission rod 521 is provided with a protrusion 5211. The protrusion 5211 is inserted into the chute 522a. When the motor 51 drives the transmission rod 521 to move linearly, the protrusion 5211 slides in the chute 522a and drives the rocker arm 522 to rotate by a certain angle.

[0122] In the description of the present application, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic expression of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine the different embodiments or examples described in the present application and the features of different embodiments or examples.

[0123] The foregoing is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A clothes drying device, characterized in that, Comprising: A drying drum (1); A dehumidifying air duct and a drying air duct located downstream of the dehumidifying air duct along the air flow direction; A heating device (4) provided in the drying air duct; A condensation device (3) provided in the dehumidifying air duct; A fresh air inlet (622c) communicating with the drying air duct; A fresh air outlet (622d) communicating with the dehumidifying air duct; A fresh air switching device (5) for switching the air flow path; the air flow path includes: A first air flow path: both the fresh air inlet (622c) and the fresh air outlet (622d) are closed, and the air flows in a closed loop through the drying air duct, the drying drum (1), and the dehumidifying air duct; A second air flow path: the dehumidifying air duct and the drying air duct are blocked from each other, the drying air duct takes in air from the fresh air inlet (622c), and the air dehumidified by the condensation device (3) is discharged from the fresh air outlet (622d); The drying equipment includes a base device (6), the base device (6) has a receiving chamber (6a), at least a part of the fresh air switching device (5) is arranged in the receiving chamber (6a), and the receiving chamber (6a) is divided into a first sub-chamber (6a') and a second sub-chamber (6a″), the heating device (4) is arranged in the first sub-chamber (6a'), and the condensation device (3) is arranged in the second sub-chamber (6a″).

2. The drying device according to claim 1, characterized in that The base device (6) includes a base (61) and a cover body (62), the base (61) is provided with a recessed area, and the cover body (62) is covered on the top side of the recessed area to define the receiving chamber (6a); the fresh air inlet (622c) is arranged on the cover body (62).

3. The drying device according to claim 2, characterized in that, The fresh air outlet (622d) is arranged on the cover body (62), and the fresh air inlet (622c) and the fresh air outlet (622d) are located on the left and right sides of the cover body (62).

4. The drying device according to claim 2, wherein, The fresh air outlet (622d) is arranged at the bottom of the base (61), and the air is discharged from the bottom of the base device (6).

5. The drying device according to claim 2, characterized in that The fresh air switching device (5) includes a damper (53) and a power mechanism, the damper (53) is rotatably arranged between the heating device (4) and the condensation device (3), and the power mechanism drives the damper (53) to swing to selectively conduct or block the first sub-chamber (6a') and the second sub-chamber (6a″).

6. The drying device according to claim 5, wherein, The rotation axis of the damper (53) is in the vertical direction, and the power mechanism is arranged on the top side of the cover body (62).

7. The clothes drying device according to claim 5, characterized in that, The cover body (62) includes a cover plate (621) and a box body (622), the cover plate (621) is provided with an avoidance groove, and the box body (622) is arranged at the avoidance groove; the box body (622) is provided with a first space (622a), the bottom wall of the first space (622a) is provided with a first ventilation hole (622e), and the first space (622a) communicates the fresh air inlet (622c) and the first ventilation hole (622e); The fresh air switching device (5) includes a first baffle (54) for blocking the first ventilation hole (622e). The first baffle (54) is connected to the air door (53), and the power mechanism drives the air door (53) and the first baffle (54) to rotate.

8. The drying device according to claim 7, characterized in that, A second space (622b) isolated from the first space (622a) is provided in the box body (622). A second ventilation hole (622f) is provided in the bottom wall of the second space (622b). The second space (622b) communicates the fresh air outlet (622d) and the second ventilation hole (622f); The fresh air switching device (5) includes a second baffle (55) for blocking the second ventilation hole (622f). The second baffle (55) is connected to the air door (53), and the power mechanism drives the air door (53) and the second baffle (55) to rotate.

9. The clothes drying device according to claim 7, wherein One of the fresh air inlet (622c) and the fresh air outlet (622d) is provided on the left side wall of the box body (622), and the other is provided on the right side wall of the box body (622).

10. The drying device according to claim 7, characterized in that, The box body (622) is provided with an axial hole (6221a) penetrating the box body (622) in the up and down direction. The power mechanism is arranged on the top side of the box body (622); a rotating shaft (531) is formed at the top end of the air door (53), and the rotating shaft (531) passes through the axial hole (6221a), and the power mechanism drives the rotating shaft (531) to rotate.

11. The drying device according to claim 10, characterized in that, The number of the air doors (53) is multiple, and the multiple air doors (53) are arranged along the left and right direction of the clothes drying device; the power mechanism includes a motor (51), a transmission rod (521) and a rocker arm (522). One end of each rocker arm (522) is movably connected to the transmission rod (521), and the other end is connected to the rotating shaft (531). The transmission rod (521) moves axially under the drive of the motor (51) and drives the rocker arm (522) to swing around the rotation axis of the air door (53).

12. The clothes drying device according to claim 1, characterized in that, The clothes drying device includes a control device and a humidity detection device. The humidity detection device is at least used to detect the humidity value of the air flow on the air flow path. The control device is used to obtain the ambient humidity value and control the fresh air switching device (5) to switch the air flow path according to the difference between the ambient humidity value and the air flow humidity value.

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