Air inlet assembly for a washing machine and washing machine

Abstract

This invention relates to an air inlet assembly for a cleaning machine and the cleaning machine itself. The air inlet assembly includes an air inlet pipe with an air inlet for connecting to the outside environment and an air outlet for connecting to the washing chamber of the cleaning machine. The air outlet includes a first air outlet and a second air outlet, with the first air outlet located above the second air outlet. The air inlet pipe has a flow channel connecting the air outlet and the air inlet. An impeller is disposed in the first air outlet and can rotate around the center line of the first air outlet. The design of the air inlet assembly of this invention, with the first and second air outlets working together, results in a large airflow coverage area, a small drying dead zone, and high drying efficiency.

Description

Technical Field

[0001] This invention relates to the field of cleaning machine technology, specifically to an air inlet assembly for a cleaning machine and the cleaning machine itself. Background Technology

[0002] Cleaning machines, such as dishwashers, are becoming increasingly common in kitchens. After the dishes are washed, there is a lot of moisture in the washing chamber of the dishwasher. In order to dry the dishes and prevent the growth of bacteria, a drying component is installed on the outer wall of the cabinet to heat the airflow in the washing chamber. The drying component inputs hot airflow into the washing chamber to dry the dishes.

[0003] For example, the Chinese utility model patent CN202320953636.2 (publication number CN220344366U) discloses a "Washing Machine," in which the drying assembly includes an air inlet duct, a heating element, and a second airflow drive component. The air inlet duct has a second air inlet and a second air outlet. The second air inlet is in fluid communication with the outside environment, and the second air outlet is in fluid communication with a second air inlet hole on the housing. Along the airflow direction, the second air outlet is located downstream of the second air inlet. The second airflow drive component is installed on the air inlet duct and is used to drive the outside airflow through the air inlet duct to the second air outlet. In this embodiment, the second airflow drive component is a second fan, and the air outlet of the second fan faces the second air inlet of the air inlet duct, and the air inlet of the second fan is in fluid communication with the outside environment.

[0004] The heating element can be a PTC heating element, installed inside the air inlet duct, located in the airflow path from the second air inlet to the second air outlet. The heating element heats the airflow entering the air inlet duct into hot air, which then enters the washing chamber to dry the tableware.

[0005] Currently, most air inlet ducts are fixed to the cabinet with nuts, and the position and area of ​​the air inlet are fixed. This results in a small air intake coverage area for the airflow entering from the air inlet. Furthermore, due to the obstruction of tableware, some hot air is blocked back, causing turbulence. This also causes the speed of hot air entering the washing chamber to decrease rapidly, and it can only slowly cover the tableware through pressure gradient, resulting in low drying efficiency.

[0006] In order to increase the coverage area of ​​the airflow, the second air outlet of the drying structure is provided with two outlets and spaced apart in the vertical direction, so that the airflow can enter the dishwasher at the top and bottom at the same time. However, the two airflows still enter the washing chamber in a fixed direction. Although the airflow coverage area is increased compared to the method of a fixed air inlet, it is still quite limited. Summary of the Invention

[0007] The first technical problem to be solved by the present invention is to provide an air inlet component for a cleaning machine with a large airflow coverage area, in light of the current state of the prior art.

[0008] The second technical problem to be solved by the present invention is to provide a cleaning machine that uses the above-mentioned air intake component, in view of the current state of the prior art.

[0009] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: an air inlet assembly for a cleaning machine, comprising...

[0010] An air inlet pipe is provided with an air inlet for connecting to the outside and an air outlet for connecting to the washing chamber of the washing machine. The air outlet includes a first air outlet and a second air outlet. The first air outlet is located above the second air outlet. The air inlet pipe has a flow channel inside that connects the air outlet and the air inlet.

[0011] A fan is used to drive airflow from the air inlet to the air outlet.

[0012] Its characteristic is that it also includes

[0013] The impeller is located in the first air outlet and can rotate around the center line of the first air outlet.

[0014] In order to make the flow field in the lower part of the washing chamber of the washing machine more uniform, there are at least two second air outlets, which are spaced apart in the horizontal direction, and the air inlet is located between the first air outlet and the second air outlet in the vertical direction.

[0015] Preferably, there are two second air outlets.

[0016] To connect the air inlet with the first air inlet and the second air inlet, the flow channel includes a first flow channel, a second flow channel, a third flow channel, and a fourth flow channel. The first flow channel extends laterally, and its first end is connected to the air inlet. The second end of the first flow channel branches into three branch channels, namely the second flow channel, the third flow channel, and the fourth flow channel. The second flow channel extends upward and is connected to the first air outlet. The third flow channel extends downward and is connected to one of the second air outlets. The fourth flow channel extends downward and is connected to the other second air outlet.

[0017] To form the aforementioned second, third, and fourth flow channels, the first flow channel has a first and second diverter ribs spaced apart along its width at its second end. The first and second walls of the first flow channel are arranged opposite each other along its width. The first diverter rib and the first wall of the first flow channel form the second upstream inlet of the second flow channel. The first and second diverter ribs form the third upstream inlet of the third flow channel. The second diverter rib and the second wall of the first flow channel form the fourth upstream inlet of the fourth flow channel. The upstream ends of the first and second diverter ribs are both arc-shaped structures that arch away from their downstream ends. The arc-shaped structure, relative to the planar structure, avoids excessive planar impact that could cause downstream air separation.

[0018] To ensure smooth airflow in the second, third, and fourth channels, the cross-sectional area of ​​the second channel, at least at its second upstream inlet, increases along the direction of fluid flow; the cross-sectional area of ​​the third channel, at least at its third upstream inlet, increases along the direction of fluid flow; and the cross-sectional area of ​​the fourth channel, at least at its fourth upstream inlet, increases along the direction of fluid flow.

[0019] Preferably, the rate of change of cross-sectional area of ​​the second flow channel at least connected to its second upstream inlet is between 1.03 and 1.12, the rate of change of cross-sectional area of ​​the third flow channel at least connected to its third upstream inlet is between 1.02 and 1.09, and the rate of change of cross-sectional area of ​​the fourth flow channel at least connected to its fourth upstream inlet is between 0.95 and 1.09. When the flow channel design is poor, turbulence and large separation vortices will appear inside the flow channel. If the expansion rate from the upstream inlet to the flow channel is too large, it will cause rapid pressure changes and velocity loss. The current flow channel has a very smooth overall streamline and no large separation vortices, reducing velocity loss caused by rapid pressure changes.

[0020] To prevent airflow separation and backflow at the bend downstream of the second upstream inlet, which would generate large backflow vortices that cannot be effectively eliminated regardless of channel cross-section adjustments, the flow pattern of the second channel is adjusted. The second channel incorporates arc-shaped ribs extending from its second upstream inlet to the first outlet. These ribs cause the second channel to exhibit a structure of sequential expansion, contraction, and re-expansion along the airflow direction. This rib design suppresses separation vortices generated when the gas velocity is high and the channel cross-sectional area changes significantly, resulting in minimal overall channel losses.

[0021] A drive mechanism such as a motor can be used to drive the impeller to rotate, but this involves many components, is complicated to install, and is costly. Therefore, the impeller includes a mounting shaft and blades mounted on the mounting shaft. The mounting shaft extends along the centerline of the air outlet and can rotate around the centerline of the air outlet. Multiple blades are arranged circumferentially around the mounting shaft, with at least one blade inclined relative to the axial direction of the mounting shaft, so that one of the blade's surfaces serves as the windward side. During airflow, the air impacts the windward side, driving the impeller to rotate.

[0022] In the above scheme, all blades are inclined at the same angle relative to the mounting shaft, and the number of blades is odd and they are evenly distributed circumferentially along the mounting shaft. If the number of blades is even and evenly distributed circumferentially, the driving torque on the blades is opposite and symmetrical, causing the forces to cancel each other out and making it impossible to drive the blades. If the blades are not evenly distributed circumferentially, the force is uneven, the driving efficiency is low, and jamming may also occur.

[0023] Preferably, the impeller further includes a guide ring, which is coaxially arranged with the mounting shaft and connected to the blades. The guide ring is tapered with a gradually expanding diameter along the airflow direction. The purpose of the guide ring is to allow the airflow to diffuse more widely in the circumference, increasing the coverage area of ​​the tableware. Driven by the impeller, the airflow is centrifuged, thereby increasing the airflow coverage area. Another function of the guide ring is to reduce the backflow of airflow when it encounters tableware, thus preventing turbulence.

[0024] Preferably, the air inlet duct is provided with a guide rib near the first air outlet. Along the airflow direction, the angle between the downstream extension line of the guide rib and the horizontal line passing through the center line of the air outlet is α, where 45°≤α≤60°. The guide rib design allows the mounting shaft to be driven even with minimal wind speed loss. This application is equivalent to pre-rotating the air inlet duct, allowing the air to be blown in from one side of the impeller, indirectly increasing the driving force near the impeller and increasing the driving torque, thus driving the mounting shaft even with minimal wind speed loss.

[0025] The technical solution adopted by the present invention to solve the second technical problem mentioned above is: a cleaning machine, characterized in that it includes a box having a washing chamber and the above-mentioned air inlet assembly, wherein the box is provided with a first air inlet communicating with a first air outlet and a second air inlet communicating with a second air outlet.

[0026] Compared with the prior art, the advantages of the present invention are as follows: The present invention sets an impeller in the first air outlet at the top. When the impeller rotates, it can increase the turbulence of the airflow and the coverage area of ​​the airflow. Since the heat is mainly concentrated in the upper part of the washing machine, it is necessary to make it more uniform by making it more turbulent. The second air outlet at the bottom adopts a fixed air outlet form in order to concentrate more airflow in the lower part and then dry the tableware over a large area as it flows upward.

[0027] The air inlet assembly of this invention is designed with a first air outlet and a second air outlet working together to provide a large airflow coverage area, a small drying dead zone, and high drying efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0029] Figure 2 for Figure 1 A schematic diagram of the structure without the door;

[0030] Figure 3 for Figure 1 A schematic diagram of the air intake assembly in the middle;

[0031] Figure 4 for Figure 3 A schematic diagram of the structure from another direction;

[0032] Figure 5 for Figure 4 A schematic diagram of the decomposition process;

[0033] Figure 6 for Figure 5 A schematic diagram of the structure with one half of the shell removed;

[0034] Figure 7 for Figure 5 A sectional view;

[0035] Figure 8 This is a schematic diagram of the airflow field simulation according to an embodiment of the present invention;

[0036] Figure 9 This is a simulation diagram of the airflow field in the second flow channel without ribs. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0038] like Figures 1-7 As shown, the cleaning machine of this preferred embodiment includes a housing 1 and an air inlet assembly, which includes an air inlet pipe 2, a fan 3 and a heating element 4.

[0039] The air inlet pipe 2 is provided with an air inlet 21 for communicating with the outside and an air outlet for communicating with the washing cavity 10 of the washing machine. The interior of the air inlet pipe 2 has a flow channel connecting the air outlet and the air inlet 21. The fan 3 is used to drive the air flow to flow from the air inlet 21 towards the air outlet. In this embodiment, the fan 3 can adopt an existing structure. The fan 3 is arranged in the air inlet pipe 2. The air inlet hole of the fan 3 is connected to the air inlet 21, and the air outlet hole of the fan 3 is connected to the air outlet. The heating element 4 is arranged downstream of the fan 3. The heating element 4 can adopt an existing PTC heating element 4.

[0040] The air outlet includes a first air outlet 22 and a second air outlet 23. The first air outlet 22 is located above the second air outlet 23. The box body 1 is provided with a first air inlet 11 connected to the first air outlet 22 and a second air inlet 12 connected to the second air outlet 23. There are at least two second air outlets 23 and they are arranged at intervals in the horizontal direction. The air inlet 21 is located vertically between the first air outlet 22 and the second air outlet 23.

[0041] In this embodiment, as Figure 6 shown, there are two second air outlets 23. The flow channel includes a first flow channel 24, a second flow channel 25, a third flow channel 26 and a fourth flow channel 27. The first flow channel 24 extends horizontally. The first end of the first flow channel 24 is connected to the air inlet 21. The second end of the first flow channel 24 branches to form three branch channels, which are the second flow channel 25, the third flow channel 26 and the fourth flow channel 27 respectively. The second flow channel 25 extends upward and is connected to the first air outlet 22. The third flow channel 26 extends downward and is connected to one of the second air outlets 23. The fourth flow channel 27 extends downward and is connected to the other second air outlet 23. In this embodiment, the structures of the third flow channel 26 and the fourth flow channel 27 form a structure similar to a "human" shape.

[0042] Specifically, in the first flow channel 24, a first flow dividing rib 51 and a second flow dividing rib 52 are arranged at intervals along its width direction. The first wall surface 241 and the second wall surface 242 of the first flow channel 24 are arranged opposite to each other along its width direction. The first flow dividing rib 51 and the first wall surface 241 of the first flow channel 24 enclose a second upstream inlet 251 of the second flow channel 25. The first flow dividing rib 51 and the second flow dividing rib 52 enclose a third upstream inlet 261 of the third flow channel 26. The second flow dividing rib 52 and the second wall surface 242 of the first flow channel 24 enclose a fourth upstream inlet 271 of the fourth flow channel 27. The upstream ends of the first flow dividing rib 51 and the second flow dividing rib 52 are both in an arc-shaped structure arched away from their downstream ends. The arc-shaped structure, compared with the planar structure, avoids excessive planar impact causing air separation downstream.

[0043] The cross-sectional area of ​​the second flow channel 25, at least the portion connected to its second upstream inlet 251, increases along the direction of fluid flow; the cross-sectional area of ​​the third flow channel 26, at least the portion connected to its third upstream inlet 261, increases along the direction of fluid flow; the cross-sectional area of ​​the fourth flow channel 27, at least the portion connected to its fourth upstream inlet 271, increases along the direction of fluid flow.

[0044] The cross-sectional area change rate of the second flow channel 25, at least at the portion connected to its second upstream inlet 251, is between 1.03 and 1.12; the cross-sectional area change rate of the third flow channel 26, at least at the portion connected to its third upstream inlet 261, is between 1.02 and 1.09; and the cross-sectional area change rate of the fourth flow channel 27, at least at the portion connected to its fourth upstream inlet 271, is between 0.95 and 1.09. When the flow channel design is poor, turbulence and large separation vortices will appear inside the flow channel. If the expansion rate from the upstream inlet to the flow channel is too large, it will cause excessively rapid pressure changes, leading to velocity loss. Currently, the overall flow lines of the flow channels are very smooth, with no large separation vortices, and the velocity loss is relatively small.

[0045] As the second flow channel 25 extends upward from the first flow channel 24, it forms a bend. After the airflow passes through the bend, it will separate and flow back, generating a large backflow vortex (such as...). Figure 9 As shown), regardless of how the flow channel cross-section is adjusted, it cannot be effectively eliminated. Therefore, the flow pattern of the second flow channel 25 is adjusted. A rib 53 extending from its second upstream inlet 251 to the first outlet 22 is provided in the second flow channel 25. The rib 53 is arc-shaped, causing the second flow channel 25 to exhibit a structure of expansion, contraction, and re-expansion along the flow direction of the airflow. The root cause of separation vortices is the significant change in the flow channel cross-sectional area under high velocity conditions, especially upstream and downstream of bends. Therefore, controlling the cross-sectional area is key to suppressing separation vortices. The design of the rib 53 suppresses the separation vortices generated when the gas velocity is high and the flow channel cross-sectional area changes significantly, effectively preventing separation vortices from occurring. Figure 8 As shown, this results in relatively small overall flow channel losses.

[0046] In this embodiment, the cross-section of the second flow channel 25 is an expansion, contraction and expansion structure in sequence, the third flow channel 26 has an overall expansion structure from upstream to downstream, and similarly, the fourth flow channel 27 has an overall expansion structure from upstream to downstream.

[0047] In this embodiment, an impeller 6 is provided in the first air outlet 22, and the impeller 6 can rotate around the center line of the first air outlet 22.

[0048] like Figure 5 , 6As shown, the impeller 6 includes a guide ring 61, a mounting shaft 62, and blades 63 disposed on the mounting shaft 62. The central part of the first air outlet 22 has a mounting base 28, and the mounting base 28 is connected to the first air outlet 22 by a connecting rib 29.

[0049] The mounting shaft 62 extends along the centerline of the first air outlet 22 and is rotatable around the centerline of the first air outlet 22. The mounting shaft 62 is rotatably mounted on the mounting base 28. Multiple blades 63 are spaced apart circumferentially along the mounting shaft 62, with at least one blade 63 inclined relative to the axial direction of the mounting shaft 62, so that one of the blade's surfaces serves as the windward surface. In this embodiment, all blades 63 are inclined relative to the axial direction of the mounting shaft 62 at the same angle. During airflow, the blades impact the windward surface, driving the impeller 6 to rotate.

[0050] The number of blades 63 is odd and they are evenly distributed circumferentially along the mounting shaft 62. If the number of blades 63 is evenly distributed circumferentially, the driving torque on the blades 63 is opposite and symmetrical, causing the forces to cancel each other out and making it impossible to drive the blades 63. If the blades 63 are not evenly distributed circumferentially, it will lead to uneven force distribution, low driving efficiency, and may also cause jamming.

[0051] The guide ring 61 is coaxially mounted with the mounting shaft 62 and connected to the blades 63. There can be one guide ring 61, with the outer end of each blade 63 connected to the inner wall of the guide ring 61. Alternatively, there can be at least two guide rings 61, arranged radially at intervals along the mounting shaft 62. Each blade 63 passes through the inner guide ring 61 from the inside out and connects to the inner wall of the outermost guide ring 61. Each guide ring 61 is a tapered shape with a gradually expanding diameter along the airflow direction. The purpose of the guide ring 61 is to increase the circumferential diffusion range of the airflow, thereby increasing the coverage area of ​​the tableware. Driven by the impeller 6, the airflow is centrifuged, thus increasing the airflow coverage area. Another function of the guide ring 61 is to reduce the backflow of airflow when it encounters tableware, thus preventing turbulence.

[0052] In the air inlet duct 2, a guide rib 20 is provided near the first air outlet 22. Along the airflow direction, the angle between the extension line of the downstream end of the guide rib 20 and the horizontal line passing through the center line of the first air outlet 22 is α, where 45°≤α≤60°. The design of the guide rib 20 allows the mounting shaft 62 to be driven even with minimal wind speed loss. In this embodiment, it is equivalent to pre-rotating in the air inlet duct 2, allowing the air to be blown in from one side of the impeller, which indirectly increases the driving force near the impeller 6 and increases the driving torque, thus driving the mounting shaft 62 even with minimal wind speed loss.

[0053] Using the air intake assembly of this embodiment, the impeller 6 can increase the airflow disturbance and the airflow coverage area when it rotates. Since the heat is mainly concentrated in the upper part of the washing machine, it is necessary to make it more uniform by causing large disturbances. The second air outlet 23 at the bottom adopts a fixed air outlet form so that the air outlet is more concentrated in the lower part and then dries the tableware over a large area as it flows upward.

[0054] In this embodiment, the air inlet pipe 2 is composed of two half-shells joined together, and the two half-shells can be welded together.

[0055] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 this invention 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. Since the embodiments disclosed in this invention can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. An air inlet assembly for a cleaning machine, comprising: An air inlet pipe (2) is provided with an air inlet (21) for communicating with the outside and an air outlet for communicating with the washing chamber (10) of the washing machine. The air outlet includes a first air outlet (22) and a second air outlet (23). The first air outlet (22) is located above the second air outlet (23). The air inlet pipe (2) has a flow channel inside that connects the air outlet and the air inlet (21). A fan (3) is used to drive airflow from the air inlet (21) toward the air outlet; Its features are, Also includes The impeller (6) is located in the first air outlet (22) and can rotate around the center line of the first air outlet (22).

2. The air intake assembly according to claim 1, characterized in that: The second air outlet (23) has at least two and is spaced apart in the horizontal direction, and the air inlet (21) is located in the vertical direction between the first air outlet (22) and the second air outlet (23).

3. The air intake assembly according to claim 2, characterized in that: There are two second air outlets (23).

4. The air intake assembly according to claim 3, characterized in that: The flow channels include a first flow channel (24), a second flow channel (25), a third flow channel (26), and a fourth flow channel (27). The first flow channel (24) extends laterally, and its first end is connected to the air inlet (21). The second end of the first flow channel (24) branches into three sub-flow channels, namely the second flow channel (25), the third flow channel (26), and the fourth flow channel (27). The second flow channel (25) extends upward and is connected to the first air outlet (22). The third flow channel (26) extends downward and is connected to one of the second air outlets (23). The fourth flow channel (27) extends downward and is connected to the other second air outlet (23).

5. The air intake assembly according to claim 4, characterized in that: The first flow channel (24) has a first diversion rib (51) and a second diversion rib (52) spaced apart along its width direction at its second end. The first wall surface (241) and the second wall surface (242) of the first flow channel (24) are arranged opposite to each other along its width direction. The first diversion rib (51) and the first wall surface (241) of the first flow channel (24) form the second upstream inlet (251) of the second flow channel (25). The first diversion rib (51) and the second diversion rib (52) form the third upstream inlet (261) of the third flow channel (26). The second diversion rib (52) and the second wall surface (242) of the first flow channel (24) form the fourth upstream inlet (271) of the fourth flow channel (27). The upstream end of the first diversion rib (51) and the upstream end of the second diversion rib (52) both have an arc-shaped structure that arches away from their downstream end.

6. The air intake assembly according to claim 5, characterized in that: The cross-sectional area of ​​the second flow channel (25) at least connected to its second upstream inlet (251) increases along the direction of fluid flow; the cross-sectional area of ​​the third flow channel (26) at least connected to its third upstream inlet (261) increases along the direction of fluid flow; the cross-sectional area of ​​the fourth flow channel (27) at least connected to its fourth upstream inlet (271) increases along the direction of fluid flow.

7. The air intake assembly according to claim 6, characterized in that: The rate of change of cross-sectional area of ​​the second flow channel (25) at least connected to its second upstream inlet (251) is between 1.03 and 1.12, the rate of change of cross-sectional area of ​​the third flow channel (26) at least connected to its third upstream inlet (261) is between 1.02 and 1.09, and the rate of change of cross-sectional area of ​​the fourth flow channel (27) at least connected to its fourth upstream inlet (271) is between 0.95 and 1.

09.

8. The air intake assembly according to claim 6, characterized in that: The second flow channel (25) is provided with a rib (53) extending from the second upstream inlet (251) to the first air outlet (22). The rib (53) is arc-shaped, and the rib (53) causes the first flow channel (24) to have an expansion, contraction and expansion structure along the flow direction of the airflow.

9. The air intake assembly according to any one of claims 1 to 8, characterized in that: The impeller (6) includes a mounting shaft (62) and blades (63) disposed on the mounting shaft (62). The mounting shaft (62) extends along the center line of the first air outlet (22) and can rotate around the center line of the first air outlet (22). There are multiple blades (63) and they are arranged circumferentially along the mounting shaft (62). At least one blade (63) is inclined relative to the axial direction of the mounting shaft (62) so that one of the walls of the blade (63) serves as the windward surface.

10. The air intake assembly according to claim 9, characterized in that: All blades (63) are inclined at the same angle relative to the axial direction of the mounting shaft (62), and the number of blades (63) is odd and they are evenly distributed along the circumference of the mounting shaft (62).

11. The air intake assembly according to claim 9, characterized in that: The impeller (6) also includes a guide ring (61), which is coaxially arranged with the mounting shaft (62) and connected to the blade (63). The guide ring (61) is a cone shape with a gradually expanding diameter along the flow direction of the airflow.

12. The air intake assembly according to claim 9, characterized in that: The air inlet pipe (2) has a guide rib (20) located near the first air outlet (22). Along the direction of airflow, the angle between the extension line of the downstream end of the guide rib (20) and the horizontal line passing through the center line of the first air outlet (22) is α, where 45°≤α≤60°.

13. A cleaning machine, characterized in that, The device includes a housing (1) having a washing chamber (10) and an air inlet assembly as described in any one of claims 1 to 12, wherein the housing (1) is provided with a first air inlet (11) communicating with a first air outlet (22) and a second air inlet (12) communicating with a second air outlet (23).

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