A rear cover device and a clothes drying device

Abstract

This application provides a back cover device and a clothes drying device. The back cover device includes a back cover with an airflow channel and a switching mechanism disposed on the back cover. The back cover defines an air delivery zone, which has a first air delivery sub-zone and a second air delivery sub-zone that are separated by barriers. The switching mechanism is used to switch the airflow path within the airflow channel, so that the back cover can selectively deliver air to the first air delivery sub-zone and / or the second air delivery sub-zone. The back cover device of this application, by switching the air delivery state of the back cover through the switching mechanism, achieves selective air intake to different parts of the clothes processing chamber. It can specifically increase the air intake in areas where clothes are difficult to dry, thereby reducing the difference in drying degree between different parts and improving the uniformity of the drying effect.

Description

Technical Field

[0001] This application relates to the field of clothing care technology, and in particular to a back cover device and a drying device. Background Technology

[0002] In related technologies, the rear cover of the clothes dryer guides the hot, dry airflow into the dryer from the back. During drying, some large garments are bundled together and cannot be shaken out, and the central bundled part is also difficult to dry. This results in some garments being over-dried while others are not dried properly. Summary of the Invention

[0003] In view of this, embodiments of this application aim to provide a rear cover device and a clothes drying device that improves drying uniformity.

[0004] This application provides a rear cover device for a clothes drying device, the rear cover device comprising:

[0005] A rear cover with an airflow channel defines an air supply area, the air supply area having a first air supply sub-area and a second air supply sub-area that are separated by barriers;

[0006] A switching mechanism, disposed on the rear cover, is used to switch the airflow path within the airflow channel so that the rear cover can selectively supply air to the first air supply sub-area and / or the second air supply sub-area.

[0007] In some implementations, the second air supply sub-zone surrounds the first air supply sub-zone.

[0008] In some implementations, the airflow channel includes an interconnected impeller mounting area and an air supply area, the air supply area being located downstream of the impeller mounting area along the airflow direction.

[0009] In some embodiments, the rear cover includes a housing and a spacer rib. The housing includes a back plate and a surrounding rib disposed along the edge of the back plate. The first sidewall of the surrounding rib has a volute tongue that divides the space within the housing into the impeller mounting area and the air supply area. The spacer rib is curved within the air supply area. The circumferential inner surface of the spacer rib defines a first air supply sub-area. The first and second ends of the spacer rib are spaced apart and define the air inlet of the first air supply sub-area. The circumferential outer surface of the spacer rib and the inner surface of the surrounding rib define a second air supply sub-area.

[0010] In some embodiments, the second end of the spacer rib is connected to the side of the volute tongue facing the air supply area, and the first end of the spacer rib is spaced apart from the second sidewall of the surrounding rib to form the air inlet of the second air supply sub-area, wherein the first sidewall and the second sidewall are located on opposite sides of the housing along the width direction.

[0011] In some implementations, the switching mechanism includes at least two baffles and at least two motors disposed behind the back plate. The motors are used to drive the baffles to swing. One of the baffles is used to open or close the air inlet of the first air supply sub-zone, and the other baffle is used to open or close the air inlet of the second air supply sub-zone. The two baffles are separably abutted against opposite side surfaces of the first end of the spacer rib.

[0012] This application provides a clothes drying device, including:

[0013] A clothes dryer with a clothes handling chamber, wherein the rear cover of the clothes dryer is provided with a first air inlet area and a second air inlet area;

[0014] A circulating air duct is connected to the garment processing chamber;

[0015] impeller;

[0016] And the rear cover device described in any embodiment of this application, wherein the impeller is disposed in the airflow channel, and the airflow channel is located on the circulating air duct; the first air inlet area connects the first air supply sub-area and the clothing processing chamber, and the second air inlet area connects the second air supply sub-area and the clothing processing chamber.

[0017] In some implementations, the first air intake zone surrounds the second air intake zone.

[0018] In some embodiments, the clothes drying device includes a control device, a first humidity detector and a second humidity detector disposed on the clothes drying drum, wherein the rotation radius corresponding to the first humidity detector is smaller than the rotation radius corresponding to the second humidity detector, and the control device is used to control the switching action of the switching mechanism according to the humidity value of the first humidity detector and the humidity value of the second humidity detector.

[0019] In some embodiments, the clothes dryer includes an air guide cap with ventilation holes, the rear end of the air guide cap covering the first air inlet area of ​​the rear cover of the dryer, the airflow flowing through the first air inlet area entering the clothes processing chamber through the ventilation holes, and the first humidity detector being installed at the front end of the air guide cap.

[0020] In some implementations, the air deflector cap gradually tapers from back to front.

[0021] In some implementations, the clothes dryer is provided with lifting ribs, and the second humidity detector is disposed on the lifting ribs.

[0022] In some embodiments, the clothes drying device includes:

[0023] In the first drying state, the difference between the humidity value of the first humidity detector and the humidity value of the second humidity detector does not exceed a preset range, and the clothing processing chamber draws air from the first air inlet area and the second air inlet area.

[0024] In the second drying state, the humidity value of the first humidity detector is greater than the humidity value of the second humidity detector, and the difference between the two exceeds the preset range. In this state, the clothing processing chamber only draws air from the first air inlet area.

[0025] In the third drying state, the humidity value of the first humidity detector is less than the humidity value of the second humidity detector, and the difference between the two exceeds a preset range. In this state, the clothing processing chamber only draws air from the second air inlet area.

[0026] The rear cover device of this application embodiment switches the air supply state of the rear cover through a switching mechanism, thereby achieving selective air intake for different parts of the clothing processing chamber. It can specifically increase the air intake for areas where clothes are difficult to dry, thereby reducing the difference in drying degree between different parts and improving the uniformity of drying effect. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a rear cover device according to an embodiment of this application;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure shown from another perspective;

[0029] Figure 3 for Figure 1 The diagram shows another perspective of the structure, in which the rear cover is in the third air supply state;

[0030] Figure 4 for Figure 3 The diagram shows the structure in the first air supply state;

[0031] Figure 5 for Figure 3 The diagram shows the structure in the second air supply state;

[0032] Figure 6 This is a schematic diagram of the structure of the drying drum and the rear panel of the housing of a clothes drying device according to an embodiment of this application;

[0033] Figure 7 for Figure 6 A schematic diagram of the clothes dryer 1 without the air vent cap;

[0034] Figure 8 for Figure 6 A schematic diagram of the clothes dryer 1 from another perspective;

[0035] Figure 9For along Figure 8 A cross-sectional view along the AA direction;

[0036] Figure 10 This is a schematic diagram of the structure of a wind deflector cap according to an embodiment of this application;

[0037] Figure 11 This is a schematic diagram of the structure of the air guide cap according to another embodiment of this application;

[0038] Figure 12 This is a schematic diagram of the structure of the air guide cap according to another embodiment of this application.

[0039] Explanation of reference numerals in the attached figures

[0040] Drying drum 1; First air inlet zone 11a; Second air inlet zone 11b; Clothes processing chamber 1a; Rear cover 11; Drum body 12; Lifting rib 14; Air guide cap 13; Ventilation hole 13a; Flange 131;

[0041] Rear side panel 3;

[0042] Rear cover device 2;

[0043] Rear cover 21; housing 211; back plate 2111; surrounding rib 2112; first side wall 2112a; second side wall 2112b; volute tongue 21121; spacer rib 212; first end 212a; second end 212b; impeller mounting area 21a; first air supply sub-area 21b; second air supply sub-area 21c;

[0044] Motor 23; baffles 22' and 22″;

[0045] First humidity detector 41; Second humidity detector 42; Detailed Implementation

[0046] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0047] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] Please see Figures 1 to 5 This application provides a rear cover device 2 for use in a clothes drying device.

[0049] This application provides a clothes drying device, which includes a housing, a circulating air duct, an impeller, and a drying drum 1 disposed within the housing (see reference). Figures 6 to 9 ), and the rear cover device 2 of any embodiment of this application.

[0050] Please see Figure 6 and Figure 9 The dryer drum 1 has a clothing handling chamber 1a for placing clothes. The front side of the dryer drum 1 is open and defines a clothing inlet. For example, please refer to... Figure 6 The dryer 1 includes a body 12 and a rear cover 11, with the rear cover 11 covering the rear end of the body 12.

[0051] The circulating air duct is connected to the clothing processing chamber 1a to form an airflow circulation path, that is, the airflow circulates in the clothing processing chamber 1a and the circulating air duct.

[0052] Please see Figures 1 to 5 The rear cover device 2 includes a rear cover 21 and a switching mechanism disposed on the rear cover 21.

[0053] The front of the rear cover 21 is open, and the rear cover 21 is mounted on the rear side panel 3 of the housing or directly on the rear cover 11 of the cylinder. It can be understood that, except for the part of the rear cover 21 used for air intake and air supply, the other open parts of the rear cover 21 are closed.

[0054] The rear cover 21 has an airflow channel located on the circulating air duct, meaning that the airflow in the circulating air duct will flow through the interior of the rear cover device 2. In other words, the rear cover 21 is used to guide the flow of circulating airflow in the drying equipment.

[0055] The rear cover 21 defines the air supply zone, through which the airflow in the airflow channel flows.

[0056] The impeller is rotatably installed in the airflow channel. The rear cover 21 draws in air from the front side of the impeller's axial direction and discharges air along the impeller's circumference. In other words, the combination of the impeller and the side wall of the airflow channel roughly forms the structure of a centrifugal fan.

[0057] It should be noted that the clothes drying equipment is equipped with a condenser for cooling and dehumidification, a fan, and a heating element for heating the dehumidified gas in the circulating air duct. The fan is used to make the airflow in the circulating air duct form a directional flow.

[0058] The drying process and principle of the clothes drying equipment: The dry hot airflow enters the clothes processing chamber 1a from the downstream of the circulating air duct. In the clothes processing chamber 1a, the dry hot airflow flows over the surface of the wet clothes, exchanges heat and moisture with the wet clothes, absorbs the moisture in the clothes, and becomes a humid hot airflow. The humid hot airflow enters the upstream of the circulating air duct, and after being condensed and dehumidified by the condenser in the circulating air duct, it forms a low-temperature dry airflow. The low-temperature dry airflow is heated by the heating element to form a dry hot airflow. The dry hot airflow passes through the rear cover 21 and re-enters the clothes processing chamber 1a. This cycle is repeated to achieve continuous and efficient drying of clothes.

[0059] Please see Figure 1 , Figures 3 to 5 The air supply area has a first air supply sub-area 21b and a second air supply sub-area 21c with a barrier setting. The barrier setting means that the first air supply sub-area 21b and the second air supply sub-area 21c will not allow air to flow between them. Airflow entering the first air supply sub-area 21b will not flow into the second air supply sub-area 21c, and airflow entering the second air supply sub-area 21c will not enter the first air supply sub-area 21b.

[0060] The switching mechanism is provided on the rear cover 21 and is used to switch the airflow path in the airflow channel so that the rear cover 21 can selectively supply air to the first air supply sub-area 21b and / or the second air supply sub-area 21c, thus allowing the rear cover 21 to have different air supply states.

[0061] It should be noted that the selective air supply from the first air supply sub-area 21b and / or the second air supply sub-area 21c means that the rear cover 21 has at least three air supply states, namely the first air supply state, the second air supply state, and the third air supply state, and the switching mechanism enables the rear cover 21 to switch between the above three air supply states.

[0062] In the first air supply state, the airflow in the airflow channel is delivered from the first air supply sub-zone 21b, and the second air supply sub-zone 21c has almost no airflow.

[0063] In the second air supply state, the airflow in the airflow channel is delivered from the second air supply sub-zone 21c, and the first air supply sub-zone 21b has almost no airflow.

[0064] In the third air supply state, the airflow is delivered from the first air supply sub-region 21b and the second air supply sub-region 21c.

[0065] As can be seen from the above, the air volume of the first air supply sub-zone 21b in the first air supply state is greater than that in the third air supply state. The air volume of the second air supply sub-zone 21c in the second air supply state is greater than that in the third air supply state.

[0066] It is understandable that the first air supply sub-zone 21b and the second air supply sub-zone 21c supply air to different parts of the drying drum 1. In this way, air can be selectively supplied to different parts of the drying drum 1 and the air supply volume of different parts can be adjusted according to the actual situation, so as to adjust the drying speed of different parts.

[0067] Accordingly, please refer to Figure 7 The rear cover 11 of the dryer drum 1 is provided with a first air inlet zone 11a and a second air inlet zone 11b. The first air inlet zone 11a connects the first air supply sub-zone 21b and the clothes processing chamber 1a, that is, the airflow delivered from the first air supply sub-zone 21b enters the clothes processing chamber 1a through the first air inlet zone 11a. The second air inlet zone 11b connects the second air supply sub-zone 21c and the clothes processing chamber 1a, that is, the airflow delivered from the second air supply sub-zone 21c enters the clothes processing chamber 1a through the second air inlet zone 11b.

[0068] When the rear cover 21 is in the first air supply state, the clothing processing chamber 1a receives air from the first air intake zone 11a, and almost no air enters the clothing processing chamber 1a from the second air intake zone 11b.

[0069] When the rear cover 21 is in the second air supply state, the clothing processing chamber 1a is supplied with air from the second air inlet zone 11b, and almost no air enters the clothing processing chamber 1a from the first air inlet zone 11a.

[0070] When the rear cover 21 is in the third air supply state, the clothing processing chamber 1a simultaneously draws air from the first air intake zone 11a and the second air intake zone 11b.

[0071] The rear cover device 2 of this application embodiment switches the air supply state of the rear cover 21 through a switching mechanism, thereby achieving selective air intake for different parts of the clothing processing chamber 1a. It can increase the air intake in areas where clothes are difficult to dry, thereby reducing the difference in drying degree between different parts and improving the uniformity of drying effect.

[0072] For example, if the humidity of the clothes in the first air inlet zone 11a corresponding to the clothes processing chamber 1a is higher than that of the clothes in other areas, the switching mechanism can be activated, causing airflow to be delivered only from the first air supply sub-zone 21b. In this case, the air intake volume of the first air inlet zone 11a is larger, which can accelerate the drying of the clothes in the first air inlet zone 11a. Similarly, if the humidity of the clothes in the second air inlet zone 11b corresponding to the clothes processing chamber 1a is higher than that of the clothes in other areas, the switching mechanism can be activated, causing airflow to be delivered only from the second air supply sub-zone 21c. In this case, the air intake volume of the second air inlet zone 11b is larger, which can accelerate the drying of the clothes in the second air inlet zone 11b. When the humidity difference of the clothes in different parts of the clothes processing chamber 1a is not significant, the switching mechanism can be activated, causing airflow to be delivered simultaneously from the first air supply sub-zone 21b and the second air supply sub-zone 21c, so that each part has a roughly equal drying speed.

[0073] For example, the airflow channel includes an impeller mounting area 21a and an air supply area located downstream of the impeller mounting area 21a along the airflow direction. An impeller is mounted in the impeller mounting area 21a. Airflow enters from the front side of the impeller mounting area along the axial direction, flows circumferentially from the impeller to the air supply area, and is then delivered from the front side of the air supply area.

[0074] The rear cover device 2 can be installed inside the box or outside the box.

[0075] For example, the rear cover device 2 is disposed outside the housing and behind the rear side panel 3 of the housing, and the rear cover device 2 is exposed on the outside of the drying equipment. Specifically, the rear side panel 3 of the housing is provided with an air outlet and multiple air inlets, and the airflow channel connects the air outlet and each air inlet. The rear side panel 3 of the housing closes the opening of the rear cover 21, and the airflow enters the impeller mounting area 21a of the airflow channel from the air outlet below the rear side panel 3 of the housing. The airflow flows upward along the airflow channel and enters the housing from the air inlet above the rear side panel 3 of the housing, and then enters the clothes processing chamber 1a.

[0076] It should be noted that the rear panel 3 does not affect the flow of air from the first air supply sub-area 21b and the second air supply sub-area 21c.

[0077] The specific arrangement of the first air supply sub-zone 21b and the second air supply sub-zone 21c is not limited, for example, left and right arrangement, up and down arrangement, etc.

[0078] For example, please refer to Figure 1 , Figures 3 to 5 The second air supply sub-zone 21c surrounds the first air supply sub-zone 21b. See also... Figure 7 The second air intake zone 11b surrounds the first air intake zone 11a.

[0079] It should be noted that during the rotation of the drying drum 1, the clothes close to the drum wall can rotate with the drum wall within a large central angle range, while the clothes wrapped around the center near the axis of rotation are not easy to shake off and are not easy to dry. Therefore, the arrangement of the second air supply zone 21c and the first air supply zone 21b can better perform differentiated drying of clothes and improve the uniformity of drying.

[0080] For example, please refer to Figure 1 , Figures 3 to 5 The rear cover 21 includes a cover 211 and a spacer 212 disposed within the cover 211.

[0081] Please see Figure 1 The cover 211 includes a back plate 2111 and a surrounding rib 2112 that are connected to each other. The surrounding rib 2112 is provided along the edge of the back plate 2111 and is located on the front side of the back plate 2111.

[0082] The first sidewall 2112a of the rib 2112 has a volute tongue 21121, which divides the space inside the casing 211 into the impeller mounting area 21a and the air supply area.

[0083] The spacer 212 is bent and disposed in the air supply area. Specifically, the rear end of the spacer 212 is fixedly connected to the back plate 2111. For example, it can be connected by welding or by integral molding.

[0084] Please see Figure 1 , Figures 3 to 5 The circumferential inner surface of the spacer 212 defines the first air supply sub-area 21b, and the first end 212a and the second end 212b of the spacer 212 are spaced apart and define the air inlet 21b' of the first air supply sub-area 21b.

[0085] The first end 212a and the second end 212b of the spacer 212 are both close to the impeller mounting area 21a. The airflow from the impeller mounting area 21a enters the first air supply sub-area 21b from the air inlet 21b' of the first air supply sub-area 21b.

[0086] Please see Figure 1 , Figures 3 to 5 The outer circumferential surface of the spacer 212 and the inner surface of the surrounding rib 2112 define the second air supply sub-region 21c.

[0087] In this embodiment, the arrangement of the spacer 212 allows the second air supply sub-region 21c to roughly surround the first air supply sub-region 21b, and the structure is simple.

[0088] It should be noted that the front end of the partition rib 212 is roughly flush with the surrounding rib 2112. When the rear cover 21 is placed on the rear side plate 3, the partition rib 212 also abuts against the rear side plate 3. In this way, the first air supply sub-area 21b and the second air supply sub-area 21c will not leak air between each other.

[0089] Understandably, the outline of the spacer 212 is as smooth as possible in order to reduce the flow resistance of the airflow.

[0090] For example, please refer to Figure 1 , Figures 3 to 5 The second end 212b of the spacer 212 is connected to the side of the volute tongue 21121 facing the air supply area. The first end 212a of the spacer 212 is spaced apart from the second sidewall 2112b of the surrounding rib 2112 to form the air inlet 21c' of the second air supply sub-area 21c. The first sidewall 2112a and the second sidewall 2112b are located on opposite sides of the cover 211 along the width direction.

[0091] It should be noted that the switching mechanism only needs to selectively block or open the air inlet 21b' of the first air supply sub-zone 21b and the air inlet 21c' of the second air supply sub-zone 21c.

[0092] In this embodiment, please refer to Figure 1 The second end 212b of the partition rib 212 blocks the airflow from the impeller mounting area 21a from flowing along the surface of the volute tongue 21121 towards the air supply area. The airflow is concentrated in the direction of the first end 212a of the partition rib 212. After the airflow exits from the air outlet side of the impeller, it can flow at a small deflection angle to the air inlet 21b' of the first air supply sub-area 21b and / or the air inlet 21c' of the second air supply sub-area 21c, thereby reducing wind resistance.

[0093] It is understandable that the first end 212a of the spacer 212 is far from the volute tongue 21121 in order to avoid creating a large airflow resistance on the impeller.

[0094] The specific structure of the switching mechanism is not limited.

[0095] For example, the switching mechanism includes at least two baffles 22' and 22″ and at least two motors 23 disposed behind the back plate 2111, that is, the motors 23 do not occupy the space inside the housing 211. The motors 23 are used to drive the baffles 22' and 22″ to swing. Specifically, the power shaft of the motor 23 passes through the back plate 2111, extends into the housing 211, and cooperates with the baffles 22' and 22″ to prevent rotation, so as to drive the baffles 22' and 22″ to swing forward or backward.

[0096] One of the baffles 22' is used to open or close the air inlet 21b' of the first air supply sub-zone 21b, and the other baffle 22″ is used to open or close the air inlet 21c' of the second air supply sub-zone 21c. The two motors 23 independently control the rotation of the corresponding baffles 22' and 22″ without interfering with each other.

[0097] Two baffles 22' and 22″ can be separably abutted against the opposite side surfaces of the first end 212a of the spacer 212.

[0098] For ease of description, the baffle 22' used to open or close the air inlet of the first air supply sub-zone 21b is referred to as the first baffle 22', and the baffle 22″ used to open or close the air inlet of the second air supply sub-zone 21c is referred to as the second baffle 22″.

[0099] When the rear cover 21 is in the third air supply state, please refer to Figure 1 and Figure 3 The first baffle 22' opens the air inlet 21b' of the first air supply sub-area 21b. The first baffle 22' is arranged roughly in the direction of airflow to minimize the resistance of the first baffle 22' to the airflow. The second baffle 22″ opens the air inlet 21c' of the second air supply sub-area 21c. The second baffle 22″ is arranged roughly in the direction of airflow to minimize the resistance of the second baffle 22″ to the airflow.

[0100] When the rear cover 21 needs to switch from the third air supply state to the first air supply state, the first baffle 22' remains stationary, and the motor 23 drives the second baffle 22″ to move along... Figure 3 The second baffle 22″ swings counterclockwise at a certain angle, causing one end of the second baffle 22″ to abut against one side of the first end 212a of the spacer 212, and the other end of the second baffle 22″ to abut against the second sidewall 2112b. The second baffle 22″ prevents airflow from entering the second air supply sub-area 21c and can guide the airflow to the air inlet 21b' of the first air supply sub-area 21b. For the state after switching, please refer to [link / reference needed]. Figure 4 .

[0101] When the rear cover 21 needs to switch from the third air supply state to the second air supply state, the second baffle 22″ remains stationary, and the motor 23 drives the first baffle 22″ to move along... Figure 3 The first baffle 22' swings clockwise at a certain angle, causing one end of the first baffle 22' to abut against the other side of the first end 212a of the spacer 212, and the other end of the first baffle 22 to abut against the volute tongue 21121. The first baffle 22' prevents airflow from entering the first air supply sub-area 21b and can guide the airflow to the air inlet 21c' of the second air supply sub-area 21c. For the state after switching, please refer to... Figure 5 .

[0102] In this embodiment, the baffles 22' and 22″ occupy a small space, have low flow resistance to airflow, and only require a small swing angle to switch the air supply state.

[0103] It is understood that in some embodiments, the default air supply state of the rear cover 21 when the dryer is turned on can be any one of the first air supply state, the second air supply state, or the third air supply state. That is to say, every time the dryer is turned on, the rear cover 21 first restores to the default air supply state.

[0104] In other embodiments, the air supply state at the end of the previous drying process is taken as the starting air supply state for this process.

[0105] For example, please refer to Figure 6 The clothes drying equipment includes a control device, a first humidity detector 41 and a second humidity detector 42 installed on the clothes drying drum 1, and both the first humidity detector 41 and the second humidity detector 42 are electrically connected to the control device.

[0106] It is understandable that the control device can be the main control board of the dryer.

[0107] The rotation radius of the first humidity detector 41 is smaller than the rotation radius of the second humidity detector 42. Here, the rotation radius refers to the radius of the circles along which the first humidity detector 41 and the second humidity detector 42 move when the dryer 1 rotates, carrying both detectors. In other words, in the plane projection perpendicular to the rotation axis of the dryer 1, the first humidity detector 41 and the second humidity detector 42 are staggered and not located on the same circle.

[0108] The control device is used to control the switching action of the switching mechanism based on the humidity value of the first humidity detector 41 and the humidity value of the second humidity detector 42.

[0109] In this embodiment, the drying equipment can adjust the airflow to the corresponding area based on the humidity of the clothes, without the need for human intervention.

[0110] For example, the drying device includes a first drying state, a second drying state, and a third drying state.

[0111] First drying state: The difference between the humidity value of the first humidity detector 41 and the humidity value of the second humidity detector 42 does not exceed the preset range, the rear cover 21 is in the third air supply state, and the clothing processing chamber 1a receives air from the first air inlet zone 11a and the second air inlet zone 11b.

[0112] The preset range can be data pre-stored in the dryer.

[0113] When the difference does not exceed the preset range, it indicates that the humidity difference between the clothes at the part corresponding to the first humidity detector 41 and the part corresponding to the second humidity detector 42 is not significant. At this time, the rear cover 21 provides relatively uniform airflow, and the clothes processing chamber 1a provides relatively uniform airflow, so that each part has a similar airflow and the clothes are dried evenly.

[0114] Second drying state: The humidity value of the first humidity detector 41 is greater than the humidity value of the second humidity detector 42, and the difference between the two exceeds the preset range. The rear cover 21 is in the first air supply state, and the clothing processing chamber 1a only receives air from the first air inlet zone 11a.

[0115] When the difference exceeds the preset range, it indicates that the humidity of the clothes at the part corresponding to the first humidity detector 41 is significantly greater than the humidity of the clothes at the part corresponding to the second humidity detector 42. At this time, the back cover 21 only vents air from the first air supply sub-area 21b, and the clothes processing chamber 1a only vents air from the first air inlet area 11a. At this time, the air volume corresponding to the first air inlet area 11a is much larger than the air volume in the first drying state, which can accelerate the drying speed of the clothes at the part corresponding to the first humidity detector 41.

[0116] Third drying state: The humidity value of the first humidity detector 41 is less than the humidity value of the second humidity detector 42, and the difference between the two exceeds the preset range, so the clothing processing chamber 1a only draws air from the second air inlet zone 11b.

[0117] When the difference exceeds the preset range, it indicates that the humidity of the clothes at the corresponding part of the first humidity detector 41 is significantly greater than the humidity of the clothes at the corresponding part of the second humidity detector 42. At this time, the back cover 21 only vents air from the second air supply sub-zone 21c, and the clothes processing chamber 1a only vents air from the second air inlet zone 11b. At this time, the air volume corresponding to the second air inlet zone 11b is much larger than the air volume in the second drying state, which can accelerate the drying speed of the clothes at the corresponding part of the second humidity detector 42.

[0118] In this embodiment, the control device can control the movement of the switching mechanism, so that the drying equipment switches between the various drying states.

[0119] It should be noted that during the same drying cycle, there may only be one drying state at any given time. For example, if the clothes do not show obvious knots or wrapping in the drying drum 1, the clothes are dried relatively evenly, and the humidity difference between the corresponding parts of the first humidity detector 41 and the second humidity detector 42 remains within the preset range, then the drying equipment will always operate in the first drying state. Alternatively, it may operate in the first drying state for the first half of the cycle and in the second drying state for the second half.

[0120] For example, please refer to Figure 10 , Figure 11 and Figure 12 The dryer drum 1 includes an air guide cap 13 with ventilation holes 13a. The rear end of the air guide cap 13 covers the first air inlet area 11a of the drum's rear cover 11. The airflow flowing through the first air inlet area 11a enters the clothing processing chamber 1a through the ventilation holes 13a. In this embodiment, the front end of the air guide cap 13 extends into the clothing processing chamber 1a. During the rotation of the dryer drum 1, the air guide cap 13 agitates the clothes, reducing the chance of clothes getting tangled or knotted. In addition, since the air guide cap 13 has ventilation holes 13a, the airflow exiting from the ventilation holes 13a is beneficial for escaping from the middle of tangled or knotted clothes, which helps to dry clothes efficiently.

[0121] The connection method between the air guide cap 13 and the rear cover 11 is not limited. For example, it can be connected by screws, welding, snap-fitting, etc.

[0122] For example, please refer to Figure 10 , Figure 11 and Figure 12 The rear end of the air guide cap 13 has a flange 131; the flange 131 is provided with a connecting hole, and the screw can be passed through the connecting hole and screwed into the cylinder rear cover 11.

[0123] For example, please refer to Figure 10 , Figure 11 and Figure 12 The air guide cap 13 gradually tapers from back to front. In other words, the air guide cap 13 is roughly cone-shaped, making it less likely for clothing to get tangled on it.

[0124] The arrangement of the ventilation holes 13a on the air guide cap 13 is not limited.

[0125] For example, please see Figure 10 and Figure 11 In some embodiments, the circumferential surface of the air guide cap 13 is provided with a plurality of ventilation holes 13a. In this way, the airflow discharged from the air guide cap 13 has both radial and axial velocity components. The airflow discharged from the air guide cap 13 has a wider coverage area, which can increase the contact area between the airflow and the clothes, so that the airflow dries the surrounding clothes more evenly, improving heat exchange efficiency and uniformity.

[0126] In other embodiments, please refer to Figure 12 The air guide cap 13 has a ventilation hole 13a at its front end, which increases the ventilation capacity of the air guide cap 13.

[0127] It should be noted that the specific structures of the first humidity detector 41 and the second humidity detector 42 are not limited. They may only have the function of detecting humidity, or they may also have the function of detecting temperature. No limitation is made here. The first humidity detector 41 and the second humidity detector 42 can adopt any structure in the prior art.

[0128] In some embodiments, for example, a first humidity detector 41 is mounted on the rear cover 11 of the cylinder.

[0129] In other embodiments, please refer to Figure 6 The first humidity detector 41 is installed at the front end of the air guide cap 13. On the one hand, the air guide cap 13 provides a mounting and support position for the first humidity detector 41. On the other hand, since the air guide cap 13 extends into the clothing processing cavity 1a, the position of the first humidity detector 41 can be closer to the clothing in the center area to detect the humidity of the clothing wrapped in the center.

[0130] The installation location of the second humidity detector 42 is not limited. For example, it can be installed on the rear cover 11 of the dryer drum or on the circumferential side wall of the dryer drum 1.

[0131] For example, please refer to Figure 6 The clothes dryer drum 1 is provided with a lifting rib 14, and the second humidity detector 42 is disposed on the lifting rib 14. In this embodiment, the lifting rib 14 is used to install the second humidity detector 42, which facilitates the installation of the second humidity detector 42.

[0132] In the description of this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine different embodiments or examples described in this application, as well as features of different embodiments or examples.

[0133] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A rear cover device for a clothes drying device, characterized in that, include: A rear cover (21) having an airflow channel defines an air supply area having a first air supply sub-area (21b) and a second air supply sub-area (21c) with obstruction. A switching mechanism is provided on the rear cover (21) for switching the airflow path in the airflow channel so that the rear cover (21) can selectively supply air to the first air supply sub-area (21b) and / or the second air supply sub-area; The rear cover (21) includes a cover (211) and a spacer rib (212). The cover (211) includes a back plate (2111) and a surrounding rib (2112) arranged along the edge of the back plate (2111). The first sidewall (2112a) of the surrounding rib (2112) has a volute tongue (21121). The volute tongue (21121) divides the space inside the cover (211) into an impeller mounting area (21a) and an air supply area. The air supply area is located downstream of the impeller mounting area (21a) along the airflow direction. The spacer rib (212) is curved within the air supply area. The circumferential inner surface of the spacer rib (212) defines the first air supply sub-area (21b). The first end and the second end of the spacer rib (212) are spaced apart and define the air inlet of the first air supply sub-area (21b). The circumferential outer surface of the spacer rib (212) and the inner surface of the surrounding rib (2112) define the second air supply sub-area (21c). The second end of the spacer rib (212) is connected to the side of the volute tongue (21121) facing the air supply area. The first end of the spacer rib (212) is spaced apart from the second sidewall (2112b) of the surrounding rib (2112) to form the air inlet of the second air supply sub-area (21c). The first sidewall (2112a) and the second sidewall (2112b) are located on opposite sides of the cover (211) in the width direction.

2. The rear cover device according to claim 1, characterized in that, The second air supply sub-region (21c) surrounds the first air supply sub-region (21b).

3. The rear cover device according to claim 1, characterized in that, The switching mechanism includes at least two baffles (22) and at least two motors (23) disposed behind the back plate (2111). The motors (23) are used to drive the baffles (22) to swing. One of the baffles (22) is used to open or close the air inlet of the first air supply sub-zone (21b), and the other baffle (22) is used to open or close the air inlet of the second air supply sub-zone (21c). The two baffles (22) are separably abutted against the opposite side surfaces of the first end of the spacer rib (212).

4. A clothes drying device, characterized in that, include: A clothes dryer (1) having a clothes handling chamber (1a) and a rear cover (11) having a first air inlet zone (11a) and a second air inlet zone (11b); A circulating air duct is connected to the clothing processing chamber (1a); impeller; And the rear cover device according to any one of claims 1-3, wherein the impeller is disposed in the airflow channel, the airflow channel is located on the circulating air duct; the first air inlet area (11a) is connected to the first air supply sub-area (21b) and the clothing processing chamber (1a), and the second air inlet area (11b) is connected to the second air supply sub-area (21c) and the clothing processing chamber (1a).

5. The clothes drying equipment according to claim 4, characterized in that, The first air intake zone (11a) surrounds the second air intake zone (11b).

6. The clothes drying equipment according to claim 4, characterized in that, The clothes drying equipment includes a control device, a first humidity detector (41) and a second humidity detector (42) disposed on the clothes drying drum (1). The rotation radius corresponding to the first humidity detector (41) is smaller than the rotation radius corresponding to the second humidity detector (42). The control device is used to control the switching action of the switching mechanism according to the humidity value of the first humidity detector (41) and the humidity value of the second humidity detector (42).

7. The clothes drying equipment according to claim 6, characterized in that, The clothes dryer (1) includes a vent cap (13) with a ventilation hole (13a). The rear end of the vent cap (13) covers the first air inlet area (11a) of the rear cover (11) of the dryer. The airflow flowing through the first air inlet area (11a) enters the clothes processing chamber (1a) through the ventilation hole (13a). The first humidity detector (41) is installed at the front end of the vent cap (13).

8. The clothes drying equipment according to claim 7, characterized in that, The air guide cap (13) gradually contracts in the direction from back to front.

9. The clothes drying equipment according to claim 6, characterized in that, The clothes dryer (1) is provided with a lifting rib (14), and the second humidity detector (42) is disposed on the lifting rib (14).

10. The clothes drying device according to claim 6, characterized in that, The clothes drying equipment includes: In the first drying state, the difference between the humidity value of the first humidity detector (41) and the humidity value of the second humidity detector (42) does not exceed a preset range, and the clothing processing chamber (1a) draws air from the first air inlet area (11a) and the second air inlet area (11b). In the second drying state, the humidity value of the first humidity detector (41) is greater than the humidity value of the second humidity detector (42), and the difference between the two exceeds the preset range. The clothing processing chamber (1a) only draws air from the first air inlet area (11a). In the third drying state, the humidity value of the first humidity detector (41) is less than the humidity value of the second humidity detector (42), and the difference between the two exceeds a preset range. The clothing processing chamber (1a) only draws air from the second air inlet area (11b).

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