Drying device and cleaning machine

Abstract

The utility model discloses a drying device and a cleaning machine, and belongs to the technical field of kitchen electric appliances. The drying device comprises a draught fan, a blocking piece and a connecting piece, the draught fan is installed in the inner container, and the draught fan is provided with a driving shaft and an impeller synchronously and rotationally connected with the driving shaft; the blocking piece is in a disc shape and can rotate around the axis of the blocking piece. The connecting piece is located between the impeller and the blocking piece, the first end of the connecting piece is synchronously and rotationally connected with one of the blocking piece and the driving shaft, the second end of the connecting piece is movably restrained on the other one of the blocking piece and the driving shaft, and a speed regulation gap for containing the damping medium is reserved. The blocking piece can rotate under the rotating action of the driving shaft, but the rotating speed of the blocking piece is far smaller than that of the impeller rotating synchronously with the driving shaft, so that differential rotation between the blocking piece and the impeller is achieved, the gust suction and air outlet effect of the drying device is achieved, and the drying efficiency of the drying device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, in particular to a drying device and a cleaning machine. BACKGROUND

[0002] The cleaning machine with cleaning function such as dishwasher or integrated washer-disinfector mainly cleans tableware automatically to liberate the hands of the user and improve the life quality of the user. The common cleaning machine usually comprises an inner container and a drying device, wherein the inner container forms a cleaning cavity for accommodating tableware, and the drying device is used for blowing hot air into the cleaning cavity to quickly dry the cleaned tableware for the convenience of the user.

[0003] In the related art, the cleaning machine further comprises a protective cover fixed to the inner container and surrounding the inner wall of the inner container to form a mounting space, and the protective cover further has a first air inlet and an air outlet; the drying device comprises a heater, a fan and a baffle, the heater is used for heating the air in the mounting space, the baffle has a second air inlet capable of being in communication with the first air inlet, and the impeller of the fan and the baffle are capable of differential rotation to make the baffle have a closing state of closing the first air inlet and an opening state of opening the first air inlet, thereby realizing the effect of gusty air extraction and air outlet, compared with continuous air inlet and air outlet, the air flow path blown out of the air outlet is more complex, which is beneficial to improve the temperature uniformity in the cleaning cavity of the inner container and improve the air drying effect.

[0004] However, in the above-mentioned related art, how to realize the differential rotation between the impeller of the fan and the baffle becomes a technical difficulty of applying the drying device to the cleaning machine. Utility model content

[0005] The present application aims to solve or at least alleviate part or all of the above problems. To this end, the present application aims to provide a drying device and a cleaning machine, wherein the cleaning machine can be a dishwasher or an integrated washer-disinfector.

[0006] In order to achieve the above-mentioned target, the present application adopts the following technical solution:

[0007] In a first aspect, the present application provides a drying device for a cleaning machine, wherein the cleaning machine comprises an inner container, and the drying device comprises:

[0008] a fan mounted on the inner container, and the fan has a driving shaft and an impeller synchronously rotatingly connected with the driving shaft;

[0009] a baffle in the shape of a disc, and the baffle is rotatably arranged around its own axis;

[0010] A connecting piece is arranged between the impeller and the baffle, and a first end of the connecting piece is connected with one of the baffle and the driving shaft in a synchronous rotation mode, and a second end of the connecting piece is movably constrained on the other one of the baffle and the driving shaft and leaves a speed regulating gap for accommodating damping medium, so that the baffle and the impeller are allowed to rotate relative to each other.

[0011] As an optional solution of the drying device, the second end of the connecting piece has a circular column, the baffle has a shaft hole for the circular column to penetrate, and a gap is left between an inner wall of the shaft hole and an outer wall of the circular column to form the speed regulating gap.

[0012] As an optional solution of the drying device, a periphery of the shaft hole extends towards the impeller to form a shaft seat, and an outer wall of the second end of the connecting piece has a blocking edge extending in a radial direction of the connecting piece, and the blocking edge abuts against an end surface of the shaft seat.

[0013] As an optional solution of the drying device, an end of the driving shaft has a non-circular column, the non-circular column penetrates the impeller, and an end of the non-circular column protrudes from a surface of a windward side of the impeller and is fixedly connected with the first end of the connecting piece.

[0014] As an optional solution of the drying device, the non-circular column and the first end of the connecting piece are detachably fixedly connected through threads.

[0015] As an optional solution of the drying device, an end of the connecting piece facing the driving shaft is provided with a limiting hole, the limiting hole has a threaded portion, and the non-circular column has a threaded segment matching the threaded portion.

[0016] As an optional solution of the drying device, the first end of the connecting piece has a regular polygonal column structure.

[0017] As an optional solution of the drying device, the drying device further comprises a limiting piece, the limiting piece is clamped on the driving shaft and located between the inner container and the impeller.

[0018] As an optional solution of the drying device, an outer wall of the driving shaft is provided with a clamping groove for clamping the limiting piece.

[0019] In a second aspect, the application provides a cleaning machine, comprising an inner container, a protective cover and the drying device as claimed in any one of the above, the protective cover is mounted on the inner container and cooperates with an inner wall of the inner container to form a mounting space, the protective cover has an air outlet and a first air inlet which are in communication with the mounting space, the impeller of the fan of the drying device is located in the mounting space, and the baffle of the drying device has a second air inlet which can be in communication with the first air inlet.

[0020] The application has the beneficial effects that:

[0021] The drying device provided by the application comprises a fan, a baffle and a connecting piece. The fan is installed in the inner container and has a driving shaft and an impeller connected with the driving shaft for synchronous rotation. The baffle is disc-shaped and is rotatably arranged around its own axis. The connecting piece is located between the impeller and the baffle, and the first end of the connecting piece is connected with one of the baffle and the driving shaft for synchronous rotation. The second end of the connecting piece is movably constrained on the other one of the baffle and the driving shaft and has a speed regulation gap for accommodating damping medium. Under the low friction force of the damping medium, the baffle can rotate under the rotation of the driving shaft, but the rotation speed of the baffle is much smaller than that of the impeller rotating synchronously with the driving shaft, so that differential rotation is realized between the baffle and the impeller, and then the gusty air extraction and outflow effect of the drying device is realized, and the drying efficiency of the drying device is improved.

[0022] The cleaning machine provided by the application can realize gusty air extraction and outflow by applying the above drying device. Compared with continuous air extraction and outflow, the air flow path in the installation space will be more complex, which is conducive to the air temperature rise in the installation space, and the drying efficiency can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the description of the embodiments of the application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the contents of the embodiments of the application and the drawings.

[0024] Figure 1 is a partial structure schematic view of the cleaning machine provided by the embodiments of the application.

[0025] Figure 2 shows an exploded schematic view of the drying device provided by the embodiments of the application.

[0026] Figure 3 shows a partial cross-sectional view of the drying device provided by the embodiments of the application.

[0027] Figure 4 shows Figure 3 a partial enlarged view of the drying device in

[0028] Figure 5 shows an exploded schematic view of the drying device provided by the embodiments of the application.

[0029] Figure 6 shows an exploded schematic view of the baffle and the protective cover provided by the embodiments of the application.

[0030] Reference signs:

[0031] 1. Inner container;

[0032] 2. Protective cover; 21. Air outlet; 22. First air inlet; 220. First air inlet group;

[0033] 3. Hot air assembly; 31. Heater; 32. Fan; 321. Impeller; 322. Drive shaft; 3220. Non-circular cylinder; 323. Motor; 33. Mounting frame;

[0034] 4. Baffle; 41. Second air inlet; 410. Second air inlet group; 42. Shaft hole; 43. Shaft seat;

[0035] 5. Connecting piece; 501. Regular polygonal prism structure; 502. Circular cylinder; 51. Limiting hole; 52. Threaded part; 53. Stop edge;

[0036] 6. Limiting sheet;

[0037] 7. Sealing ring. DETAILED DESCRIPTION

[0038] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described accompanying drawings.

[0039] In this application, the terms "including", "containing", "having" or any other similar words are intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements does not only include those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0040] In this application, the term "and / or" is a description of the association relationship between the associated objects, which means that there can be three kinds of relationships. For example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this application generally represents a "and / or" relationship between the front and rear associated objects.

[0041] In this application, the terms "connect", "couple", "coupling", "mount" can be direct connection, coupling or mounting, or indirect connection, coupling or mounting. Among them, for example, direct connection refers to the connection of two parts or components without the need for an intermediate part, and indirect connection refers to the connection of two parts or components through at least one intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0042] In this application, those of ordinary skill in the art will understand that the relative terms used in connection with the quantity or condition (for example, "about", "approximately", "substantially" and the like) include the value indicated by the context. For example, the relative terms at least include the degree of error related to the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. related to a specific value. Such terms should also be considered to disclose the range defined by the absolute values of the two endpoints. The relative term can refer to the addition or subtraction of a certain percentage (for example, 1%, 5%, 10% or more) of the indicated value. The numerical value without the relative term should also be disclosed as a specific value with a tolerance. In addition, "substantially" when expressing the relative angular positional relationship (for example, substantially parallel, substantially perpendicular), can refer to the addition or subtraction of a certain degree (for example, 1 degree, 5 degrees, 10 degrees or more) based on the indicated angle.

[0043] In this application, those of ordinary skill in the art will understand that the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the part can also be performed by one part, one component, or multiple parts in combination.

[0044] In this application, the terms "upper", "lower", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as limiting the embodiments of the present application. In addition, it should also be understood in the context that when referring to one element connected to another element "on" or "under", it can not only be directly connected to another element "on" or "under", but also indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like not only represent the positive direction, but also can be understood as the side direction. For example, the lower side can include the lower side, the lower left side, the lower right side, the lower front side and the lower back side, etc.

[0045] Figure 1 is a partial structure schematic diagram of the cleaning machine provided by the embodiments of the present application. Figure 2 The exploded schematic diagram of the drying device provided by the embodiments of the present application is shown. As Figures 1 to 2As shown, the cleaning machine provided by the present application comprises a box body, an inner container 1 and a door body (not shown in the figure). The inner container 1 is installed in the box body and has an opening for taking and placing tableware. The door body is rotatably connected to the side of the opening to open and close the opening. The door body can close the inner container 1 to form a cleaning cavity to accommodate the tableware in the state of closing the opening.

[0046] The cleaning machine further comprises a washing device for cleaning the tableware in the cleaning cavity. The washing device can be selected from the conventional washing device of the cleaning machine, which will not be described here. In addition, the cleaning machine further comprises a protective cover 2 and a drying device. The protective cover 2 is located in the cleaning cavity and is buckled to the inner wall of the inner container 1 to form an installation space with the inner wall of the inner container 1. The protective cover 2 is provided with an air outlet 21 communicating the installation space with the cleaning cavity, and a first air inlet 22 is formed on the end wall opposite to the inner wall of the inner container 1. Part of the drying device is installed in the installation space and is used to suck the air in the cleaning cavity into the installation space, heat the air and then make the hot air return to the cleaning cavity to dry the cleaned tableware, reduce the growth of bacteria and improve the safety of the product.

[0047] Figure 3 A partial cross-sectional view of the drying device provided by the embodiment of the present application is shown. Figure 4 A partial enlarged view of the drying device is shown. Figure 3 A partial cross-sectional view of the drying device provided by the embodiment of the present application is shown. Figure 5 An exploded view of the drying device provided by the embodiment of the present application is shown. As shown in the figure, Figures 3 to 5 and combined with Figure 2 As shown, the drying device comprises a hot air assembly 3. The hot air assembly 3 comprises a heater 31 and a fan 32. The fan 32 is arranged in the inner container 1 and has a driving shaft 322 and an impeller 321 coaxially connected to the driving shaft 322 at the power output end thereof. The driving shaft 322 and the impeller 321 are arranged to rotate synchronously relative to the inner container 1. The driving shaft 322 penetrates the inner container 1 and is located in the installation space. The heater 31 and the impeller 321 are both located in the installation space, and the heater 31 is located on the flow path of the air flow. When the drying device works, the impeller 321 of the fan 32 rotates to suck the air in the inner container 1 into the installation space from the first air inlet 22. The heater 31 heats the air and then makes the air return to the inner container 1 from the air outlet 21. The tableware can be dried by using the hot air.

[0048] In order to improve the drying efficiency of the drying device, the drying device also includes a baffle 4 and a connecting member 5. The baffle 4 is disc-shaped, and a second air inlet 41 is provided on the baffle 4. The baffle 4 can be rotatably arranged around its own axis so that the second air inlet 41 is correspondingly connected to the first air inlet 22, or the second air inlet 41 is staggered with the first air inlet 22; the connecting member 5 is located between the baffle 4 and the impeller 321 of the fan 32 and can rotate with the fan 32. The connecting member 5 and the baffle 4 have the same rotation axis, and the first end of the connecting member 5 is fixedly connected to one of the baffle 4 and the fan 32, and its second end is movably constrained to the other of the baffle 4 and the fan 32 and leaves a speed regulation gap for accommodating the damping medium, so that when the impeller 321 is in a rotating state, the baffle 4 and the protective cover 2 and the impeller 321 all rotate relative to each other.

[0049] When the baffle 4 rotates to the point where the second air inlet 41 on it is staggered with the first air inlet 22 on the protective cover 2, even if the impeller 321 of the fan 32 rotates, the air in the inner tank 1 cannot enter the installation space, or only a small amount of air enters the installation space (taking into account the gap between the baffle 4 and the protective cover 2). At this time, the heat generated by the heater 31 will accumulate in the installation space, causing the air temperature in the installation space to rise rapidly in a short period of time, until the baffle 4 rotates to the point where the second air inlet 41 on it is connected to the first air inlet 22 on the protective cover 2. The rotation of the impeller 321 of the fan 32 can enable the air in the inner tank 1 to enter the installation space from the first air inlet 22 through the second air inlet 41, and the high-temperature air in the installation space flows back from the air outlet 21 into the inner tank 1 to dry the tableware. Based on this principle, when the heater 31 heats for the same time, compared with the technical solution without the baffle 4, this solution can obtain dry air with a higher temperature, thereby improving the drying efficiency of the drying device.

[0050] It should be emphasized that the present application is based on the differential rotation requirement between the baffle 4 and the impeller 321, so that a gap is left at the connection between the connector 5 and one of the fan 32 and the baffle 4, and a damping medium is placed in the gap. Only with the cooperation of the damping medium can the differential rotation effect be achieved.

[0051] In an embodiment, the fan 32 has a connecting end head protruding from the impeller 321 and extending towards the first air inlet 22, and the first end of the connecting member 5 is fixedly connected with the connecting end head. At this time, the second end of the connecting member 5 is connected with the baffle 4, and a speed regulating gap for accommodating the damping medium is left between the two. On the one hand, since the connecting member 5 is fixedly connected with the connecting end head of the fan 32, the connecting member 5 rotates synchronously with the fan 32; on the other hand, since the connecting member 5 and the baffle 4 are connected by the damping medium, the baffle 4 can rotate with the connecting member 5 under the action of the damping medium, but the rotating speed of the baffle 4 is not completely the same as that of the connecting member 5, that is, the rotating speed of the baffle 4 is not completely the same as that of the impeller 321 of the fan 32, so that differential rotation is realized between the baffle 4 and the impeller 321 of the fan 32.

[0052] In the embodiment, the second end of the connecting member 5 has a circular column 502, and the baffle 4 has an axial hole 42 for the circular column 502 to pass through, and a gap is left between the axial hole 42 and the circular column 502 to form the above-mentioned speed regulating gap, so that the baffle 4 can rotate relative to the connecting member 5. Further, the damping medium such as lubricating oil is injected into the speed regulating gap between the axial hole 42 and the circular column 502, and under the action of the low friction force of the damping medium, the baffle 4 can rotate under the action of the rotation of the connecting member 5, but the rotating speed of the baffle 4 is much smaller than that of the connecting member 5.

[0053] It can be understood that the connecting end head can be directly formed on the side of the impeller 321 facing the baffle 4 (i.e. the surface of the windward side of the impeller 321), or can be formed by the driving shaft 322 of the fan 32 passing through the surface of the windward side of the impeller 321, and no matter which way is adopted, the above-mentioned effect can be achieved.

[0054] In the embodiment, the end of the driving shaft 322 has a non-circular column 3220, the non-circular column 3220 is arranged on the impeller 321, and the end of the non-circular column 3220 protrudes from the surface of the windward side of the impeller 321 to form the connecting end head. This design can ensure that the connecting member 5 rotates synchronously with the impeller 321, and on the other hand, the structure of the impeller 321 does not need to be greatly changed, and the processing and design cost of the impeller 321 can be reduced.

[0055] In other words, the driving shaft 322 of the fan 32 drives the impeller 321 and the connecting piece 5 to rotate synchronously, the baffle 4 rotates at a differential speed relative to the connecting piece 5, and under the low friction of the lubricating oil between the baffle 4 and the connecting piece 5, the rotating speed of the baffle 4 is much lower than that of the impeller 321. Moreover, the second air inlet 41 of the baffle 4 and the first air inlet 22 of the protective cover 2 can switch between the two states of communication and dislocation under the rotation of the baffle 4, thereby realizing the gusty air extraction of the impeller 321, that is, the air inlet and air outlet under the action of the impeller 321 regularly increase and decrease, and compared with continuous air extraction, the air flow path in the installation space is more complex, which is more conducive to the air warming in the installation space, thereby improving the drying efficiency of the drying device.

[0056] In order to install the fan 32 on the outer wall of the inner container 1, the drying device further comprises a mounting bracket 33, the motor 323 of the fan 32 is fixed on the mounting bracket 33 and located outside the inner container 1, and the mounting bracket 33 is fixedly connected with the inner container 1. In addition, a sealing element is arranged between the mounting bracket 33 and the inner container 1, which can support the mounting bracket 33 and absorb the vibration of the mounting bracket 33 caused by the operation of the fan 32. On the other hand, since the driving shaft 322 of the fan 32 passes through the inner container 1, that is, the inner container 1 has a through hole for the driving shaft 322 of the fan 32 to pass through, the sealing element improves the sealing performance of the connection position between the driving shaft 322 and the inner container 1, thereby preventing water in the inner container 1 from flowing out of the inner container 1 to the motor 323 of the fan 32 through the through hole.

[0057] The drying device further comprises a limiting piece 6, which is sleeved outside the non-circular column 3220 and abuts against other parts of the driving shaft 322. During assembly, the limiting piece 6 is first sleeved outside the non-circular column 3220 of the driving shaft 322, then the impeller 321 is sleeved outside the non-circular main body of the driving shaft 322, and finally the connecting piece 5 is fixedly connected with the non-circular column 3220, so as to limit and install the impeller 321 between the limiting piece 6 and the connecting piece 5. Further, in order to limit the limiting piece 6, the outer surface of the non-circular column 3220 further has a clamping groove, and the limiting piece 6 is clamped in the clamping groove.

[0058] The connecting piece 5 is a shaft sleeve, a limiting hole 51 is formed on the end face of the first end of the shaft sleeve, the limiting hole 51 has a threaded portion 52 therein, and the end of the driving shaft 322 has a threaded segment matched with the threaded portion 52. The connecting piece 5 is selected as a shaft sleeve, the shaft sleeve can be threadedly connected with the threaded segment of the driving shaft 322 through the threaded portion 52 in the shaft sleeve, thereby realizing the detachable fixed connection between the two, which is simple and effective in connection and easy to operate.

[0059] Furthermore, the end of the sleeve adjacent to the impeller 321 has a regular polygonal prism structure 501, such as a regular hexagonal prism structure, which can be easily matched with the regular hexagonal prism structure using a wrench to connect the sleeve to the end of the drive shaft 322.

[0060] To facilitate the floating connection between baffle 4 and the shaft sleeve, baffle 4 has an axial hole 42 through which the second end of the shaft sleeve passes. The circumference of axial hole 42 extends toward impeller 321 to form a shaft seat 43. The inner diameter of shaft seat 43 is larger than the outer diameter of the shaft sleeve, thereby leaving a gap between the shaft sleeve and shaft seat 43 to form a speed regulating gap. It will be appreciated that differential rotation between baffle 4 and the shaft sleeve can be achieved by injecting a damping medium, such as lubricating oil with a certain viscosity, into the speed regulating gap.

[0061] In this embodiment, the shaft sleeve has a rib 53 extending in its radial direction in the circumferential direction. The rib 53 abuts against the end surface of the shaft seat 43 to position the shaft sleeve in the axial direction.

[0062] Figure 6 FIG. 4 shows an exploded schematic diagram of the baffle 4 and the protective cover 2 provided in an embodiment of the present application. Figure 6 As shown, the protective cover 2 is provided with a plurality of first air inlets 22, and the baffle 4 is provided with a plurality of second air inlets 41. The arrangement of the plurality of first air inlets 22 is the same as the arrangement of the plurality of second air inlets 41, and each second air inlet 41 has the same shape and size as the corresponding first air inlet 22, so that the plurality of first air inlets 22 are connected to the plurality of second air inlets 41 in a one-to-one correspondence, or the plurality of first air inlets 22 are staggered with the plurality of second air inlets 41. With such an arrangement, when the baffle 4 rotates relative to the protective cover 2, the second air inlets 41 on the baffle 4 are sometimes connected to the first air inlets 22 of the protective cover 2, and sometimes disconnected from the first air inlet 22 of the protective cover 2 in a staggered manner, thereby causing the exhaust air volume of the impeller 321 to regularly increase or decrease. When the air volume decreases, the temperature of the heating tube rises higher, and when the air volume increases, the temperature of the air brought out is higher.

[0063] In this embodiment, each first air inlet 22 and each second air inlet 41 is fan-shaped, and the center of each fan-shaped circle is located on the rotation axis of the baffle 4. This arrangement not only facilitates the processing and forming of the first air inlets 22 and the second air inlets 41, but also increases the number of first air inlets 22 and second air inlets 41, and facilitates the corresponding matching of the second air inlets 41 with the first air inlets 22, thereby achieving the above-mentioned air intake effect of sometimes connecting and sometimes disconnecting.

[0064] The multiple first air inlets 22 arranged at intervals along the fan-shaped radial direction form a first air inlet group 220, and multiple first air inlet groups 220 are arranged on the protective cover 2 along the circumferential direction of the baffle 4. The multiple second air inlets 41 arranged at intervals along the fan-shaped radial direction form a second air inlet group 410, and multiple second air inlet groups 410 are arranged on the baffle 4 along the circumferential direction of the baffle 4. It should be noted that the fan-shaped radii of the multiple first air inlets 22 in the same first air inlet group 220 gradually increase from the center of the fan shape to the periphery. Similarly, the fan-shaped radii of the multiple second air inlets 41 in the same second air inlet group 410 gradually increase from the center of the fan shape to the periphery.

[0065] Further, the first air inlets 22 in adjacent first air inlet groups 220 are arranged at intervals in the radial direction of the fan shape, and the second air inlets 41 in adjacent second air inlet groups 410 are arranged at intervals in the radial direction of the fan shape. In this way, while increasing the number of first air inlets 22 and second air inlets 41, the switching efficiency of the second air inlets 41 and the first air inlets 22 between the two states of communication and disconnection is improved, and thus the total air intake and air exhaust of the drying device can be improved while achieving gusty air exhaust, thereby improving the drying efficiency of the drying device.

[0066] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the scope of the present application.

Claims

1. A drying device for a washing machine, the washing machine comprising an inner tank (1), characterized in that: The drying device comprises: A fan (32) is installed on the inner container (1), and the fan (32) has a drive shaft (322) and an impeller (321) connected to the drive shaft (322) for synchronous rotation; The baffle (4) is disc-shaped and can be rotated around its own axis; A connecting member (5) is located between the impeller (321) and the baffle (4), and a first end of the connecting member (5) is synchronously rotatably connected to one of the baffle (4) and the drive shaft (322), and a second end of the connecting member (5) is movably constrained to the other of the baffle (4) and the drive shaft (322) and leaves a speed regulating gap for accommodating a damping medium, so that the baffle (4) and the impeller (321) rotate relative to each other.

2. The drying device according to claim 1, characterized in that: The second end of the connecting member (5) has a circular cylinder (502), and the blocking piece (4) has an axial hole (42) for the circular cylinder (502) to penetrate, and a gap is left between the inner wall of the axial hole (42) and the outer wall of the circular cylinder (502) to form the speed regulation gap.

3. The drying device according to claim 2, characterized in that: The circumference of the shaft hole (42) extends toward the impeller (321) to form a shaft seat (43), and the outer wall of the second end of the connecting member (5) has a rib (53) extending along its own radial direction, and the rib (53) abuts against the end face of the shaft seat (43).

4. The drying device according to claim 2, characterized in that: The end of the drive shaft (322) has a non-circular cylinder (3220), the non-circular cylinder (3220) is passed through the impeller (321), and the end thereof protrudes from the surface of the windward side of the impeller (321) and is fixedly connected to the first end of the connecting member (5).

5. The drying device according to claim 4, characterized in that: The non-circular cylinder (3220) is detachably fixedly connected to the first end of the connecting member (5) via a thread.

6. The drying device according to claim 5, characterized in that: A limiting hole (51) is provided at one end of the connecting member (5) facing the driving shaft (322), a threaded portion (52) is provided in the limiting hole (51), and the non-circular cylinder (3220) has a threaded section adapted to the threaded portion (52).

7. The drying device according to claim 6, characterized in that: The first end of the connecting member (5) has a regular polygonal prism structure (501).

8. The drying device according to any one of claims 1 to 7, characterized in that: The drying device further comprises a limiting plate (6), wherein the limiting plate (6) is clamped on the driving shaft (322) and is located between the inner container (1) and the impeller (321).

9. The drying device according to claim 8, characterized in that: The outer wall of the driving shaft (322) is provided with a slot for clamping the limiting piece (6).

10. A cleaning machine, characterized in that: The invention comprises an inner tank (1), a protective cover (2) and a drying device according to any one of claims 1 to 9, wherein the protective cover (2) is installed on the inner tank (1) and encloses an installation space with the inner wall of the inner tank (1), the protective cover (2) has an air outlet (21) and a first air inlet (22) connected to the installation space, the impeller (321) of the fan (32) of the drying device is located in the installation space, and the baffle (4) of the drying device has a second air inlet (41) that can be connected to the first air inlet (22) accordingly.

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