Air guide system for cleaning machine and cleaning machine

Abstract

The utility model discloses an air guide system for a cleaning machine and the cleaning machine. The air guide system comprises a shell and an air guide structure, an air guide channel is formed in the shell, and the air guide channel is provided with an air inlet and an air outlet communicated with an inner container of the cleaning machine; the air guide structure is arranged at the air outlet and provided with at least two blades used for guiding airflow, the blades extend in the radial direction of the air outlet and are arranged in the circumferential direction of the air outlet at intervals, an interval is reserved between every two adjacent blades to form an air passing gap, and each blade is provided with a flow guide face arranged in the direction facing the air direction. When air flow passes through the air gap, the air flow can be guided and diffused in the radial direction of the air outlet under the action of the flow guide face, the blowing range of the air flow entering the inner container is enlarged, and the air drying efficiency is improved. The cleaning machine is better in air drying efficiency by applying the air guide system.

Description

Technical Field

[0001] The present application relates to the field of electrical appliance technology, and in particular to an air guide system for a cleaning machine and a cleaning machine. Background Art

[0002] A washing machine is a device that automatically washes tableware such as bowls, chopsticks, plates, dishes, knives, forks and spoons. It usually includes a box body, an inner tank, a cleaning mechanism and an air guide system. The inner tank is installed in the box body and is used to place tableware. The cleaning mechanism is used to clean the tableware in the inner tank. The air guide system is used to air-dry the cleaned tableware, which can prevent bacteria from growing due to water accumulation in the inner tank, ensure that the tableware is clean and dry, and enhance the user experience.

[0003] In the related art, the air guide system uses a positive temperature coefficient thermistor (PTC) hot air drying. PTC hot air drying mainly relies on the fan to transport the outside air into the air duct of the washing machine, and after being heated by the PTC, it is blown into the inner tank of the washing machine from the air duct outlet to achieve the drying operation of the tableware in the inner tank. However, when the airflow blows into the inner tank from the air duct outlet, the air duct outlet will have a certain guiding effect on the airflow, so that the airflow blows into the inner tank along a fixed direction, so that the tableware located in the airflow blowing range can be better dried, while the tableware located outside the airflow blowing range has a poor drying effect, resulting in a regional separation of the drying effect of the tableware, and the overall drying efficiency of the washing machine is poor.

[0004] Therefore, there is an urgent need for an air guide system for a cleaning machine to solve the above problems. Utility Model Content

[0005] The first technical problem to be solved by the present application is to provide an air guide system for evenly blowing a drying airflow toward the inner tank, which can increase the blowing range of the airflow and improve the air drying efficiency.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] In a first aspect, the present application provides an air guide system for a cleaning machine, the air guide system comprising:

[0008] A housing having an air guide passage therein, wherein the air guide passage has an air inlet and an air outlet communicated with the inner container of the cleaning machine;

[0009] The wind guide structure is arranged at the air outlet and has at least two blades for guiding the airflow. Each of the blades extends along the radial direction of the air outlet and is arranged at intervals in the circumferential direction of the air outlet. A gap is left between two adjacent blades to form a wind gap, and each blade has a guide surface arranged facing the wind direction.

[0010] As an optional solution of the air guide system for a cleaning machine, the guide surface is a suction surface or a pressure surface of a blade.

[0011] As an optional solution for the air guide system for the cleaning machine, each of the blades is arranged to be inclined from the leading edge to the trailing edge thereof and from the pressure surface to the suction surface, and presents the same rotation direction as a whole.

[0012] As an optional solution for the air guide system for the cleaning machine, all blades located in the same cross section of the air guide channel form a group, and along the flow direction of the fluid, the air guide structure has at least two groups of blades.

[0013] As an optional solution of the air guide system for the cleaning machine, along the flow direction of the fluid, each of the blades is located downstream of the air outlet.

[0014] As an optional solution for the air guide system for the cleaning machine, the shell includes a fixing seat for mounting with the side wall of the inner tank of the cleaning machine, and the opening inside the fixing seat is the air outlet.

[0015] As an optional solution for the air guide system for the cleaning machine, the air guide structure also includes a hub ring, and the root of each blade is connected to the outer wall of the hub ring and extends radially outward along the hub ring to form an impeller as a whole with the hub ring.

[0016] As an optional solution for the air guide system for the cleaning machine, the impeller is rotatably constrained on the fixed seat through the hub ring, and the extension direction of its rotation axis is consistent with the extension direction of the axis of the opening.

[0017] As an optional solution for the air guide system for the cleaning machine, the fixing seat is provided with a limiting shaft hole, the back of the hub ring is provided with a rotating shaft extending toward the opening, and the rotating shaft is rotatably matched with the limiting shaft hole.

[0018] As an optional solution for the air guide system for the cleaning machine, the rotating shaft has at least two elastic connecting plates arranged at intervals along the circumferential direction of the hub ring, with intervals left between the elastic connecting plates, and under pressure they can approach each other to be collapsed as a whole, so that the outer diameter of the entire rotating shaft is smaller than the caliber of the limiting shaft hole.

[0019] As an optional solution for the air guide system for the cleaning machine, the fixed seat has at least two rib walls extending inward from the open inner peripheral wall, and a gap for air flow is formed between two adjacent rib walls. The inner side of each rib wall is connected by an inner ring wall, and the inner ring wall is hollow inside to form the limiting shaft hole.

[0020] As an optional solution for the air guide system for the cleaning machine, the free end of each of the elastic connecting plates has an outwardly bent flange. When the rotating shaft is assembled in the limiting shaft hole, the flange abuts against the rear end wall of the rib wall to limit the rotating shaft from leaving the limiting shaft hole.

[0021] As an optional solution for the air guide system for the cleaning machine, the fixed seat has a first connecting wall and a second connecting wall, both of which are annular and arranged inside and outside, and the first connecting wall and the second connecting wall both extend backward from the rear side of the fixed seat, and the root of each blade is connected to the outer side of the first connecting wall, and the outer edge of each blade is connected to the inner side of the second connecting wall.

[0022] As an optional solution for the air guide system for the cleaning machine, the outer side of the fixing seat is also provided with a threaded portion in the circumferential direction for connecting with the inner liner side wall of the cleaning machine.

[0023] As an optional solution for the air guide system for a cleaning machine, the outer periphery of the fixing seat has at least one limiting plane for facilitating installation.

[0024] In a second aspect, the present application provides a cleaning machine, comprising an inner tank and an air guide system for a cleaning machine as described above, wherein an air guide channel of the air guide system is connected to the inner tank.

[0025] As an optional solution of the cleaning machine, a mounting opening is provided on the side wall of the inner tank, and the shell includes a fixing seat installed on the mounting opening, and the opening inside the fixing seat is the air outlet.

[0026] As an optional solution for the cleaning machine, the shell also includes a cover shell, which is installed on the outside of the inner tank, at least part of the fixing seat is located on the inside of the inner tank, the cover shell has the air guide channel or the cover shell cooperates with the outer wall of the inner tank to form the air guide channel, and the cover shell has a connecting port connecting the air outlet and the air guide channel.

[0027] The beneficial effects of this application are:

[0028] The air guide system provided by the present application includes a shell and an air guide structure. The shell is provided with an air guide channel inside. The air guide channel has an air inlet and an air outlet connected to the inner tank of the cleaning machine. The air guide structure is arranged at the air outlet, and has at least two blades for guiding the airflow. Each blade extends along the radial direction of the air outlet and is arranged at intervals in the circumferential direction of the air outlet. An interval is left between two adjacent blades to form a wind gap, and each blade has a guide surface arranged facing the wind direction. When the airflow passes through the wind gap, the airflow can be guided and diffused in the radial direction of the air outlet under the action of the guide surface, thereby increasing the sweeping range of the airflow in the inner tank, and thus improving the air drying efficiency.

[0029] The cleaning machine provided in the present application has better air drying efficiency by applying the above-mentioned air guide system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present application and these drawings without paying any creative work.

[0031] Figure 1 It is a structural schematic diagram of the air guide system provided in the embodiment of the present application applied to a cleaning machine;

[0032] Figure 2 is a schematic structural diagram of an exemplary air guide system provided in an embodiment of the present application;

[0033] Figure 3 yes Figure 2 Structural schematic diagram of the middle air guide structure;

[0034] Figure 4 is a schematic structural diagram of another exemplary air guide system in one direction provided by an embodiment of the present application;

[0035] Figure 5 yes Figure 4 Schematic diagram of the structure of the central air guide system in another direction.

[0036] Reference numerals:

[0037] 100, inner tank; 101, installation port;

[0038] 1. Shell; 10. Air guide channel; 11. Cover; 12. Fixing seat; 120. Air outlet; 121. Fixing part; 122. Limiting part; 12a. Rib wall; 12b. Inner ring wall; 12c. First connecting wall; 12d. Second connecting wall;

[0039] 2. wind guide structure; 21. blades; 21a. suction surface; 21b. pressure surface; 22. hub; 23. rotating shaft; 230. elastic connecting piece; 231. flange. DETAILED DESCRIPTION

[0040] 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 drawings.

[0041] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0042] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "and / or" relationship.

[0043] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0044] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0045] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0046] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0047] The present application provides a cleaning machine, including a housing, an inner tank 100, a shelf, a cleaning mechanism and an air guide system. The housing not only serves as the main supporting and mounting structure of the inner tank 100, the cleaning mechanism and the drying mechanism, but also serves as the overall appearance structure of the cleaning machine, and plays an important role in the overall aesthetics and structural strength of the cleaning machine. The inner tank 100 is installed in the housing, the shelf is installed in the inner tank 100 and is used to place tableware, the cleaning mechanism is used to clean the tableware, and the air guide system is used to dry the tableware. Among them, the cleaning mechanism can select existing mature cleaning technology and drying technology, which will not be repeated here. It can be understood that the cleaning machine provided in the present application can be a dishwasher.

[0048] The air guide system provided in the present application is not only applicable to cleaning machines that use PTC hot air drying, but also applicable to cleaning machines that use other air drying methods. In addition, the air guide system is not only applicable to cleaning machines, but also applicable to other electrical appliances that need air drying, which is not limited here.

[0049] Figure 1 The structure schematic diagram of the air guide system provided by the present application applied to a cleaning machine is shown. As shown in FIG1 , the air guide system includes a housing 1 and an air guide structure 2. The housing 1 has an air guide channel 10 inside. The air guide channel 10 has an air inlet and an air outlet 120 connected to the inner tank 100 of the cleaning machine. The air guide structure 2 is arranged at the air outlet 120 and has at least two blades 21 for guiding the airflow. Each blade 21 extends along the radial direction of the air outlet 120 and is arranged at intervals in the circumferential direction of the air outlet 120. An interval is left between two adjacent blades 21 to form a wind gap, and each blade 21 has a guide surface arranged facing the wind direction. When the airflow flows through the wind gap formed between the blades 21, the airflow will diffuse outward along the radial direction of the air outlet 120 under the action of the guide surface of the blade 21, thereby increasing the sweeping range of the airflow in the inner tank 100, thereby improving the air drying efficiency.

[0050] Compared with the technical solution in the related art in which the airflow is blown directly into the inner pot 100 from the air duct outlet 120, the above solution can break up the airflow entering the inner pot 100, expand the coverage area of ​​the airflow, and improve the drying efficiency of the tableware.

[0051] In one embodiment, the air guide system further includes a fan (not shown in the figure), which is installed on the housing 1 and located in the air guide channel 10. The fan is used to draw external airflow into the air guide channel 10 and allow the airflow to enter the inner container 100 from the air outlet 120. By setting the fan, the air volume entering the inner container 100 can be increased, and the air drying efficiency of the tableware in the inner container 100 can be further improved.

[0052] In one embodiment, the housing 1 further includes a cover shell 11 and a fixing seat 12, a mounting port 101 is provided on the side wall of the inner liner 100, the cover shell 11 is installed on the outer side of the inner liner 100 and cooperates with the outer side wall of the inner liner 100 to form an air guide channel 10, at least part of the fixing seat 12 is located on the inner side of the inner liner 100, the opening inside the fixing seat 12 is the air outlet 120, the air guide structure 2 is installed at the air outlet 120, and the cover shell 11 has a connection port connecting the air outlet 120 and the air guide channel 10. In other embodiments, the cover shell 11 may also have an air guide channel 10.

[0053] In one embodiment, the cover shell 11 extends downward in a vertical direction, and the bottom side wall of the cover shell 11 has a connecting port connected to the mounting port 101 of the inner liner 100. The fixing seat 12 is installed at the mounting port 101, and part of the structure of the fixing seat 12 extends into the mounting port 101. Part of the structure of the fixing seat 12 is located outside the mounting port 101 and can abut against the inner side wall of the inner liner 100.

[0054] Figure 2 A partial structural schematic diagram of an example air guide system provided in the present application is shown. Figure 3 Shows Figure 2 The schematic diagram of the structure of the middle air guide structure 2. Figures 2 to 3 As shown, the fixing seat 12 includes a fixing portion 121 and a limiting portion 122. The outer periphery of the fixing portion 121 has a threaded portion threadedly connected to the mounting opening 101. The limiting portion 122 is located outside the mounting opening 101 and can abut against the inner wall of the liner 100. In this embodiment, the limiting portion 122 is circular in shape. In other embodiments, the outer peripheral wall of the limiting portion 122 has at least one plane. Of course, the limiting portion 122 can also be circular in shape, as long as it can facilitate the installation of the fixing mechanism, there is no limitation here.

[0055] In order to achieve sealing of the connection part with the inner liner 100, the air guide system further includes a seal, which is located between the limiting portion 122 and the inner wall of the inner liner 100. Furthermore, the limiting portion 122 has a recess on one side facing the inner wall of the inner liner 100, and part of the seal is accommodated in the recess to achieve limited installation of the seal, avoid dislocation of the seal, and ensure the sealing effect.

[0056] In the present embodiment, the guide surface is the suction surface 21a or the pressure surface 21b of the blade 21. In the present embodiment, the suction surface 21a or the pressure surface 21b of the blade 21 may be a curved surface with a certain curvature, and the curvature of the suction surface 21a or the pressure surface 21b may be changed to change the flow direction of the airflow passing through the suction surface 21a, and then through reasonable design, it is ensured that the airflow can diffuse outward in a conical shape along the radial direction of the blade 21 after passing through the blade 21, thereby increasing the coverage of the airflow. In another embodiment, the suction surface 21a or the pressure surface 21b of the blade 21 may also be a straight surface. In this case, the blade 21 may be tilted relative to the extension direction of the through hole as a whole, so as to achieve the suction surface 21a or the pressure surface 21b of the blade 21 facing the windward direction of the air outlet 120, so as to achieve the airflow being guided outward along the radial direction of the blade 21, thereby increasing the coverage of the airflow.

[0057] In this embodiment, each blade 21 is arranged obliquely from its leading edge to its trailing edge and from the pressure surface 21b to the suction surface 21a, and presents the same rotation direction as a whole, so that the wind gap formed between the blades 21 has a certain inclined rotation direction, and the airflow passing through the filter gap flows along the rotation direction, thereby achieving the purpose of breaking up the airflow.

[0058] In the present embodiment, all blades 21 located in the same cross section of the air guide channel 10 form a group, and the air guide structure 2 has a group of such blades 21. The number of blades 21 is six, and the six blades 21 are arranged in the same posture and in the same rotational direction. Of course, the number of blades 21 is not limited to six, and can also be any number such as two, three, four, five, seven, eight, etc., which can be specifically designed according to actual needs and is not limited here. In another embodiment, along the flow direction of the fluid, the air guide structure 2 has at least two groups of such blades 21. It can be understood that the more blade groups the air guide structure 2 has, the better the effect of breaking up the airflow, but the higher the installation space requirement for the air guide structure 2, therefore, the blade group of the air guide structure 2 can be designed according to the specific situation and is not limited here.

[0059] In this embodiment, along the flow direction of the fluid, each blade 21 is located downstream of the air outlet 120, and the projection of the blade 21 on the surface where the air outlet 120 is located is larger than the air outlet 120. When the air outlet 120 is a circular hole, that is, the outer diameter of the blade 21 is larger than the diameter of the air outlet 120, so as to further increase the diffusion of the airflow in the radial direction of the air outlet 120, expand the sweeping range of the airflow, and improve the air drying efficiency. In another embodiment, along the flow direction of the fluid, each blade 21 is located downstream of the air outlet 120, and the outer diameter of the blade 21 is equivalent to the diameter of the air outlet 120. In another embodiment, the blade 21 can also be directly installed in the air outlet 120, and the outer diameter of the blade 21 is smaller than the inner diameter of the air outlet 120.

[0060] In this embodiment, the air guide structure 2 further includes a hub ring 22, and the root of each blade 21 is connected to the outer wall of the hub ring 22 and extends radially outwardly of the hub ring 22 to form an impeller with the hub ring 22. The arrangement of the hub ring 22 facilitates the installation of the blades 21. In another embodiment, at least two groups of blades 21 may be arranged on the hub ring 22 along the fluid flow direction.

[0061] In this embodiment, the impeller is rotationally constrained on the fixed seat 12 by the hub ring 22, and the extension direction of its rotation axis is consistent with the extension direction of the axis of the opening, so that the blades 21 of the impeller can extend along the radial direction of the opening, that is, the blades 21 extend along the radial direction of the air outlet 120, so as to break up the airflow passing through the air outlet 120. Furthermore, the fixed seat 12 has a limiting shaft hole, and the back of the hub ring 22 has a rotating shaft 23 extending toward the opening, and the rotating shaft 23 is rotatably matched with the limiting shaft hole.

[0062] In this embodiment, the fixed seat 12 has at least two rib walls 12a extending inward from the inner peripheral wall of the opening, and a gap for airflow to pass through is formed between two adjacent rib walls 12a. The inner side of each rib wall 12a is connected by an inner ring wall 12b, and the inner ring wall 12b is hollow inside to form a limiting shaft hole. Such a configuration facilitates the formation of a limiting shaft hole in the opening of the fixed seat 12, and then facilitates the rotatable installation of the impeller shaft 23 in the limiting shaft hole. The number of rib walls 12a can also be two, three, four, five, six, etc. It can be understood that the more the number of rib walls 12a, the better the diversion effect of the airflow, but it will also have a certain obstruction effect on the airflow.

[0063] It can be understood that in this embodiment, both side surfaces of the rib wall 12a are straight surfaces, and the side surfaces of the rib wall 12a are parallel to the axis of the air outlet 120, so that the rib wall 12a can only play a role of diversion. In another embodiment, the rib wall 12a can also be designed to be inclined relative to the axis of the air outlet 120, or the rib wall 12a can be designed in the form of a blade 21. In this case, the rib wall 12a can also play the role of the blade 21 to guide and diffuse the airflow.

[0064] In this embodiment, the free end of the rotating shaft 23 has a flange 231 bent outward. When the rotating shaft 23 is assembled in the limiting shaft hole, the flange 231 abuts against the rear end wall of the rib wall 12a to limit the rotating shaft 23 from leaving the limiting shaft hole. Further, the rotating shaft 23 has at least two elastic connecting pieces 230 spaced apart along the circumferential direction of the hub ring 22, with a gap between each elastic connecting piece 230. The free end of each elastic connecting piece 230 has the above-mentioned flange 231, and can be close to each other under pressure to be folded as a whole, so that the outer diameter of the entire rotating shaft 23 is smaller than the caliber of the limiting shaft hole, so as to facilitate the installation of the rotating shaft 23 with the flange 231 in the limiting shaft hole. During the assembly process, the elastic connecting piece 230 is first pressed to reduce the outer diameter of the end of the rotating shaft 23 away from the hub ring 22, and then the rotating shaft 23 is passed through the limiting shaft hole. Finally, the pressing of the elastic connecting piece 230 is released, and the elastic connecting piece 230 is restored to its original state. At this time, the flange 231 on the elastic connecting piece 230 protrudes outside the limiting shaft hole in the radial direction of the limiting shaft hole, thereby preventing the rotating shaft 23 from escaping from the limiting rotating hole. In another embodiment, the free end of the rotating shaft 23 can also be connected to the limiting protrusion in a detachable manner, and the limiting protrusion is used to limit the rotating shaft 23 from escaping from the limiting shaft hole. In this case, the rotating shaft 23 does not need to be composed of multiple elastic connecting pieces 230. The rotating shaft 23 can be first installed in the limiting shaft hole, and then the limiting protrusion is installed on the free end of the rotating shaft 23. The limiting protrusion is used to abut against the rear end wall of the rib wall 12a to limit the rotating shaft 23 from escaping from the limiting shaft hole.

[0065] In this embodiment, the working principle of the air guide system is as follows: the fan is started to allow the external air flow to enter the air guide channel 10, and the PTC heater in the air guide channel 10 heats and pressurizes the air. The hot air flow flows out from the air outlet 120 of the air guide channel 10, and passes through the wind gaps between the blades 21 of the air guide structure 2. The hot air flow forms a circumferential driving force on the guide surface of the blade 21, so that the blade 21 drives the entire air guide structure 2 to rotate around the axis of the rotating shaft 23. During the rotation process, the hot air flow flows toward the inner tank 100 at a certain inclination angle, expanding the sweeping range of the hot air flow, and the hot air flow contacts the water droplets on the surface of the tableware in the inner tank 100, and the heat is transferred to the water droplets to evaporate them, thereby achieving the purpose of drying the tableware.

[0066] Figure 4A schematic diagram of the partial structure of another example of an air guide system provided in the present application in one direction is shown. Figure 5 Shows Figure 4 The schematic diagram of the structure of the central air guide system in another direction. Figures 4 to 5 As shown, the fixing seat 12 includes a fixing portion 121 and a limiting portion 122. The outer periphery of the fixing portion 121 has a threaded portion threadedly connected to the mounting opening 101. The limiting portion 122 is located outside the mounting opening 101 and can abut against the inner wall of the inner container 100. In this embodiment, the limiting portion 122 is in the shape of a regular hexagon, so that the fixing seat 12 can be installed on the inner container 100 through the limiting portion 122. In other embodiments, the outer peripheral wall of the limiting portion 122 has at least one plane. Of course, the shape of the limiting portion 122 can also be circular, as long as it can facilitate the installation of the fixing mechanism, there is no limitation here.

[0067] In order to achieve sealing of the connection part with the inner liner 100, the air guide system further includes a seal, which is located between the limiting portion 122 and the inner wall of the inner liner 100. Furthermore, the limiting portion 122 has a recess on one side facing the inner wall of the inner liner 100, and part of the seal is accommodated in the recess to achieve limited installation of the seal, avoid dislocation of the seal, and ensure the sealing effect.

[0068] The fixing seat 12 has a first connecting wall 12c and a second connecting wall 12d which are both annular and arranged inside and outside. The first connecting wall 12c and the second connecting wall 12d extend backward from the rear side of the fixing seat 12, and the root of each blade 21 is connected to the outer side of the first connecting wall 12c, and the outer edge of each blade 21 is connected to the inner side of the second connecting wall 12d, that is, the blade 21 is installed in the air outlet 120.

[0069] In the present embodiment, the guide surface is the suction surface 21a or the pressure surface 21b of the blade 21. In the present embodiment, the suction surface 21a or the pressure surface 21b of the blade 21 may be a curved surface with a certain curvature, and the curvature of the suction surface 21a or the pressure surface 21b may be changed to change the flow direction of the airflow passing through the suction surface 21a, and then through reasonable design, it is ensured that the airflow can diffuse outward in a conical shape along the radial direction of the blade 21 after passing through the blade 21, thereby increasing the coverage of the airflow. In another embodiment, the suction surface 21a or the pressure surface 21b of the blade 21 may also be a straight surface. In this case, the blade 21 may be tilted relative to the extension direction of the through hole as a whole, so as to achieve the suction surface 21a or the pressure surface 21b of the blade 21 facing the windward direction of the air outlet 120, so as to achieve the airflow being guided outward along the radial direction of the blade 21, thereby increasing the coverage of the airflow.

[0070] In this embodiment, each blade 21 is arranged obliquely from its leading edge to its trailing edge and from the pressure surface 21b to the suction surface 21a, and presents the same rotation direction as a whole, so that the wind gap formed between the blades 21 has a certain inclined rotation direction, and the airflow passing through the wind gap flows along the rotation direction, thereby achieving the purpose of breaking up the airflow.

[0071] In the present embodiment, all blades 21 located in the same cross section of the air guide channel 10 form a group, and the air guide structure 2 has a group of such blades 21. The number of blades 21 is five, and the five blades 21 are arranged in the same posture and in the same rotational direction. Of course, the number of blades 21 is not limited to five, and can also be any number such as two, three, four, six, seven, eight, etc., which can be specifically designed according to actual needs and is not limited here. In another embodiment, along the flow direction of the fluid, the air guide structure 2 has at least two groups of such blades 21. It can be understood that the more blade groups the air guide structure 2 has, the better the effect of breaking up the airflow, but the higher the installation space requirement for the air guide structure 2, therefore, the blade group of the air guide structure 2 can be designed according to the specific situation and is not limited here.

[0072] In this embodiment, the working principle of the air guide system is as follows: the fan is started to allow outside air to enter the air guide channel 10, and the PTC heater in the air guide channel 10 heats and pressurizes the air. The hot air flow flows out from the air outlet 120 of the air guide channel 10. When flowing through the through hole, the hot air flow flows toward the inner tank 100 at a certain inclination angle under the action of the blades 21 in the through hole, thereby expanding the sweeping range of the hot air flow. The hot air flow contacts the water droplets on the surface of the tableware in the inner tank 100, and the heat is transferred to the water droplets to evaporate them, thereby achieving the purpose of drying the tableware.

[0073] Based on the above two examples, it can be known that the air guide system provided by the present application can be that the air guide structure 2 is rotatably mounted on the fixed seat 12 around the center line of the air outlet 120, or the air guide structure 2 is fixed to the fixed seat 12; the blade group of the air guide structure 2 can be one group, or the number of the blade groups of the air guide structure 2 can be at least two groups; when the blade groups are at least two groups, one group of the blade groups is rotatably mounted on the fixed seat 12 around the center line of the air outlet 120, and the other group of the blade groups is fixed to the fixed seat 12. The blades 21 can be located downstream of the air outlet 120 in the direction of fluid flow; or they can be located inside the air outlet 120; for example, when the number of the blade groups of the air guide structure 2 is at least two groups, the blades 21 of one group of the blade groups are located downstream of the air outlet 120 in the direction of fluid flow, and the blades 21 of the other group of the blade groups are located inside the air outlet 120.

[0074] When the blade 21 is located downstream of the air outlet 120 in the fluid flow direction, the air guide structure 2 can be fixed or rotated, and the projection of the blade 21 on the surface where the air outlet 120 is located is larger than the through hole, so that the diffusion range of the airflow is further expanded under the action of the blade 21, the coverage area of ​​the airflow is increased, and the air drying efficiency is improved. When the blade 21 is located inside the air outlet 120, the air guide structure 2 can be fixed or rotated.

[0075] Based on the above-mentioned inventive concept, the air guide structure 2 provided in the present application can be any combination of the above-mentioned technical means. Technical personnel in this field can make reasonable corresponding designs based on the inventive concept of the present application and in combination with actual application conditions. Only two specific embodiments are provided here for illustration. It should be understood that the above two examples are not exhaustive embodiments of the air guide structure 2 of the present application.

[0076] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims

1. An air guide system for a cleaning machine, characterized in that: The air guide system comprises: A housing (1) having an air guide channel (10) therein, wherein the air guide channel (10) has an air inlet and an air outlet (120) connected to an inner container (100) of the cleaning machine; An air guide structure (2) is arranged at the air outlet (120) and has at least two blades (21) for guiding airflow, each of the blades (21) extends radially along the air outlet (120) and is arranged at intervals in the circumferential direction of the air outlet (120), a gap is left between two adjacent blades (21) to form a wind gap, and each of the blades (21) has a guide surface arranged facing the wind direction.

2. The air guide system for a cleaning machine according to claim 1, characterized in that: The flow-guiding surface is the suction surface (21a) or the pressure surface (21b) of the blade (21).

3. The air guide system for a cleaning machine according to claim 2, characterized in that: Each blade (21) is arranged obliquely from its leading edge to its trailing edge and from the pressure surface (21b) to the suction surface (21a), and presents the same rotation direction as a whole.

4. The air guide system for a cleaning machine according to claim 3, characterized in that: All blades (21) located in the same cross section of the air guide channel (10) form a group, and along the flow direction of the fluid, the air guide structure (2) has at least two groups of blades (21).

5. The air guide system for a cleaning machine according to claim 1, characterized in that: Along the flow direction of the fluid, each of the blades (21) is located downstream of the air outlet (120).

6. The air guide system for a cleaning machine according to any one of claims 1 to 5, characterized in that: The housing (1) comprises a fixing seat (12) for mounting on the side wall of an inner tank (100) of a cleaning machine, and the opening inside the fixing seat (12) is the air outlet (120).

7. The air guide system for a cleaning machine according to claim 6, characterized in that: The wind guide structure (2) also includes a hub ring (22), and the root of each blade (21) is connected to the outer wall of the hub ring (22) and extends outward along the radial direction of the hub ring (22) to form an impeller as a whole with the hub ring (22).

8. The air guide system for a cleaning machine according to claim 7, characterized in that: The impeller is rotationally constrained on the fixed seat (12) via the hub ring (22), and the extension direction of its rotation axis is consistent with the extension direction of the axis of the opening.

9. The air guide system for a cleaning machine according to claim 8, characterized in that: The fixing seat (12) is provided with a limiting shaft hole, and the back of the hub ring (22) is provided with a rotating shaft (23) extending toward the opening, and the rotating shaft (23) is rotatably matched with the limiting shaft hole.

10. The air guide system for a cleaning machine according to claim 9, characterized in that: The rotating shaft (23) has at least two elastic connecting pieces (230) spaced apart along the circumferential direction of the hub ring (22), with a spacing between the elastic connecting pieces (230) and being able to approach each other and collapse as a whole under pressure, so that the outer diameter of the entire rotating shaft (23) is smaller than the caliber of the limiting shaft hole.

11. The air guide system for a cleaning machine according to claim 10, characterized in that: The fixing seat (12) has at least two rib walls (12a) extending inward from the open inner peripheral wall, a gap for airflow to pass through is formed between two adjacent rib walls (12a), the inner side of each rib wall (12a) is connected through an inner ring wall (12b), and the inner ring wall (12b) is hollow inside to form the limiting shaft hole.

12. The air guide system for a cleaning machine according to claim 11, characterized in that: The free end of each elastic connecting piece (230) has an outwardly bent flange (231), and when the rotating shaft (23) is assembled in the limiting shaft hole, the flange (231) abuts against the rear end wall of the rib wall (12a) to limit the rotating shaft (23) from leaving the limiting shaft hole.

13. The air guide system for a cleaning machine according to claim 6, characterized in that: The fixing seat (12) comprises a first connecting wall (12c) and a second connecting wall (12d) which are both annular and arranged inside and outside, the first connecting wall (12c) and the second connecting wall (12d) both extend backwards from the rear side of the fixing seat (12), and the root of each blade (21) is connected to the outer side of the first connecting wall (12c), and the outer edge of each blade (21) is connected to the inner side of the second connecting wall (12d).

14. The air guide system for a cleaning machine according to any one of claims 7 to 13, characterized in that: The outer side of the fixing seat (12) is also provided with a threaded portion in the circumferential direction for connecting with the side wall of the inner container (100) of the cleaning machine.

15. The air guide system for a cleaning machine according to any one of claims 7 to 13, characterized in that: The outer periphery of the fixing seat (12) has at least one limiting plane for easy installation.

16. A cleaning machine, characterized in that: It comprises an inner container (100) and an air guide system for a cleaning machine as described in any one of claims 1 to 15, wherein an air guide channel (10) of the air guide system is connected to the inner container (100).

17. The cleaning machine according to claim 16, characterized in that A mounting opening (101) is provided on the side wall of the inner container (100), and the shell (1) comprises a fixing seat (12) installed on the mounting opening (101), and the opening inside the fixing seat (12) is the air outlet (120).

18. The cleaning machine according to claim 17, characterized in that The shell (1) further comprises a cover shell (11), wherein the cover shell (11) is mounted on the outer side of the inner liner (100), at least a portion of the fixing seat (12) is located on the inner side of the inner liner (100), the cover shell (11) has the air guide channel (10) or the cover shell (11) cooperates with the outer side wall of the inner liner (100) to form the air guide channel (10), and the cover shell (11) has a connection port connecting the air outlet (120) and the air guide channel (10).

Images