A cleaning machine

Abstract

The utility model relates to a kind of cleaning machines, cleaning machine includes box, inside has washing cavity;Drying structure, for heating after outside airflow is introduced into washing cavity;Exhaust structure, for washing cavity in airflow is discharged to outside;Circulation acceleration piece, with the air inlet and air outlet that washing cavity is communicated and the airflow channel that the air inlet and air outlet are communicated, the circulation acceleration piece is also equipped with for the circulation acceleration fan of airflow in airflow channel is accelerated;The control method of cleaning machine is: outside airflow is heated and is transported into washing cavity and flows by drying structure, mixed with airflow in washing cavity in flow process, and part is discharged to outside by exhaust structure, another part enters airflow channel and is accelerated to washing cavity by circulation acceleration fan after backflow, to increase airflow flow speed and airflow coverage area in washing cavity.

Description

Technical Field

[0001] This utility model relates to a cleaning machine for cleaning tableware and / or fruits and vegetables. Background Technology

[0002] Existing cleaning machines with exhaust drying functions are generally equipped with a drying system that blows hot air into the cavity for drying. For example, Chinese invention patent application number CN202210778760.X (publication number CN115067849B) discloses "A drying device for a cleaning machine and its drying control method". This cleaning machine has an exhaust assembly installed on the inner door and a hot air assembly installed on the side wall of the cavity. The hot air assembly has a heating element and a blower fan installed in the hot air channel, and the exhaust assembly has an exhaust fan installed in the exhaust channel.

[0003] However, when there are many dishes in the washing chamber, or when the dishes are not arranged in a standardized manner, the hot air blown into the washing chamber will be blocked by the dishes, reducing the flow rate and making the flow field uneven, creating dead zones in the flow field, reducing the coverage of hot air, and thus affecting the drying effect. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a cleaning machine with good drying effect in light of the current state of the technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a cleaning machine, the cleaning machine including a box body with a washing chamber inside;

[0006] The drying structure is used to heat the outside airflow before introducing it into the washing chamber;

[0007] The exhaust structure is used to expel the airflow from the washing chamber to the outside.

[0008] Its characteristic is that it also includes

[0009] The circulation accelerator has an air inlet and an air outlet that are both connected to the washing chamber, as well as an airflow channel connecting the air inlet and the air outlet. The circulation accelerator is also equipped with a circulation accelerator fan for accelerating the airflow in the airflow channel.

[0010] Preferably, the housing is provided with an exhaust port connected to the washing chamber. The exhaust structure includes an exhaust pipe and an exhaust fan. The air inlet of the exhaust pipe is connected to the exhaust port, and the air outlet of the exhaust pipe is connected to the outside. When the temperature and humidity values ​​in the washing chamber are not lower than the set values, the exhaust fan operates; when the temperature and humidity values ​​in the washing chamber are lower than the set values, the exhaust fan does not operate. This saves energy. When the temperature and humidity values ​​in the washing chamber are high, it is necessary to quickly exhaust the hot and humid airflow in the washing chamber to improve drying efficiency, so the exhaust fan is turned on to quickly exhaust the air. When the temperature and humidity values ​​in the washing chamber are low, the hot and dry airflow circulates in the washing chamber, which keeps the washing chamber warm and more effectively increases the surface temperature of the tableware, improving the drying effect. During this process, in order to maintain the balance of air pressure inside and outside the washing chamber, the airflow is forced into the exhaust structure and discharged.

[0011] In the above scheme, the washing chamber is equipped with a temperature and humidity sensor for detecting the internal temperature and humidity values, so as to determine whether to turn on the exhaust fan based on the temperature and humidity values.

[0012] The user can manually control the exhaust fan to turn on based on temperature and humidity values. Preferably, the cleaning machine also includes a controller, the input of which is electrically connected to a temperature and humidity sensor, and the output of which is electrically connected to the exhaust fan. This allows the system to automatically turn on the exhaust fan based on the temperature and humidity values ​​in the washing chamber.

[0013] Preferably, the side wall of the housing is provided with a first through hole and a second through hole that communicate with the washing chamber. The air inlet is connected to the first through hole, and the air outlet is connected to the second through hole. The air velocity flowing out of the first through hole is V1, and the air velocity flowing out of the second through hole is V2, where V2 > V1. This increases the air velocity that re-enters the washing chamber, improves the convective heat and mass transfer efficiency, and thus improves the drying effect.

[0014] Preferably, V2-V1≥2m / s.

[0015] Preferably, the side wall of the housing is provided with a third through hole communicating with the washing chamber. The drying structure includes an air inlet pipe and a heating element disposed in the air inlet pipe. The air inlet port of the air inlet pipe is connected to the outside, and the air outlet port of the air inlet pipe is connected to the third through hole. The drying structure also includes an air intake fan for driving the airflow from the air inlet port to the air outlet port of the air inlet pipe. The airflow velocity from the third through hole is V3, where V2 < V3. Because the drying of tableware mainly relies on the hot airflow input by the drying structure, V2 < V3, which ensures the airflow rate input by the drying structure into the washing chamber, thereby ensuring drying efficiency and drying effect. During the flow of airflow in the washing chamber, it will be blocked and slowed down. After being accelerated a second time by the circulation accelerator, it will flow back into the washing chamber to ensure the overall airflow velocity in the washing chamber, thereby ensuring the airflow coverage area and drying effect. Furthermore, when the two airflows with different velocities from the second through hole and the first through hole meet, they will dissipate and further expand the airflow coverage area.

[0016] Preferably, V2 / V3 ≥ 20%.

[0017] Preferably, the third through hole and the first through hole are at different heights. This way, after the airflow enters through the third through hole, it needs to flow to the first through hole before it can exit, thus lengthening the airflow path and improving the drying effect.

[0018] Preferably, the third through hole is located on the first side wall of the housing, and the first through hole and the second through hole are located on the second side wall of the housing. The first side wall and the second side wall are arranged adjacent to each other, or the first side wall and the second side wall are arranged opposite to each other. This facilitates the installation of the circulation acceleration component and the air inlet pipe, and the airflow path is longer, resulting in a better drying effect.

[0019] Another option is to place the third through hole, the first through hole, and the second through hole on the same side wall of the housing. This requires the airflow to have a longer path, but the installation space will be relatively cramped if the circulation acceleration component and the air inlet pipe are installed on the same side wall of the housing.

[0020] Preferably, the air inlet is located below the air outlet, so that after the airflow enters the washing chamber through the third through hole, it circulates internally from bottom to top, making the hot air flow field in the washing chamber more dispersed.

[0021] Preferably, the airflow channel includes an upward-extending section and a downward-extending section. The air inlet is located at the lower end of the upward section, and the air outlet is located on the downward section. This high placement of the air outlet prevents water in the washing chamber from entering the airflow channel during the washing process. Even if a small portion enters the airflow channel, it will flow back into the washing chamber along the downward section.

[0022] Preferably, the airflow channel is provided with a water outlet located above the air inlet. A condensate channel is also provided between the water outlet and the air inlet, so that the condensate water after the water vapor entering the airflow channel during the washing and drying processes flows back into the cavity, preventing the airflow from blowing the condensate water and generating noise. At the same time, because a circulation acceleration fan is installed in the airflow channel, the condensate water is discharged from the condensate channel, which also prevents the condensate water from entering the fan.

[0023] To further prevent condensate from flowing into the circulating acceleration fan, the air outlet of the circulating acceleration fan is located downstream of the water outlet along the water flow direction, and a water-blocking rib is provided between the two.

[0024] To further increase the hot air coverage area and improve the drying effect, the air inlet pipe has multiple air outlet ports, and correspondingly, the third through hole has multiple ports, with at least two air outlet ports of the air inlet pipes arranged vertically at intervals. This drying structure improves the uniformity of the airflow field by introducing air into the washing chamber from multiple points.

[0025] Preferably, the bottom wall of the circulation accelerator is provided with an inlet and an outlet, the outlet being connected to the washing chamber of the tank. The circulation accelerator has a water flow channel connecting the inlet and outlet, comprising an upwardly extending first section and a downwardly extending second section. The lower end of the first section is connected to the inlet, and the lower end of the second section is connected to the outlet. The air inlet is located beside the second section, and a siphon port connected to the air inlet is provided on the side wall of the second section. This allows the air inlet to not only supply airflow but also connect to the siphon port, ensuring pressure balance in the water flow channel and serving multiple purposes from a single opening.

[0026] Compared with the prior art, the advantages of this utility model are as follows: By setting up a circulation acceleration component, which forms an internal circulation air duct with the washing chamber, when the drying structure blows hot air into the washing chamber, the hot air mixes with the airflow in the washing chamber. Part of the hot air is discharged to the outside through the exhaust structure to maintain the air pressure balance in the washing chamber, while the other part enters the airflow channel of the internal circulation acceleration component, is accelerated by the circulation acceleration fan, and then flows back into the washing chamber, thereby increasing the airflow speed and coverage area in the washing chamber, and thus improving the drying effect. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

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

[0029] Figure 3 for Figure 1 A schematic diagram of the structure of the circulating accelerator and the circulating accelerator fan;

[0030] Figure 4 for Figure 3 A schematic diagram of the structure with one half of the shell removed;

[0031] Figure 5 for Figure 4 Enlarged view of point A. Detailed Implementation

[0032] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0033] In the description of this utility model, it should be understood that, unless otherwise stated, "multiple" means two or more, and the terms "upper," "lower," "left," "right," "top," "bottom," "front," "rear," etc., indicate the orientation or positional relationship based on the direction or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an adhesive connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model patent based on the specific circumstances.

[0035] like Figures 1-5 As shown, the cleaning machine of this preferred embodiment includes a housing 1, a drying structure 2, a circulation acceleration component 3, and a circulation acceleration fan 4.

[0036] The cabinet 1 has a washing chamber 11 inside, and the side wall of the cabinet 1 is provided with a first through hole 13, a second through hole 14 and a third through hole 12 that are connected to the washing chamber 11.

[0037] The drying structure 2 is used to heat the external airflow and then introduce it into the washing chamber 11. The drying structure 2 includes an air inlet pipe 21, a heating element and an air inlet fan 22. The air inlet pipe 21 and the circulation acceleration element 3 are both located outside the washing chamber 11 and are both installed on the side wall of the housing 1.

[0038] The air inlet port of the air inlet duct 21 is connected to the outside, and the air outlet port of the air inlet duct 21 is connected to the third through hole 12. Along the airflow direction, the air inlet port of the air inlet duct 21 is located upstream of its air outlet port. A heating element is installed in the air inlet duct 21; the heating element can be a PTC heating element. The air inlet port of the air intake fan 22 is connected to the outside, and the air outlet port is connected to the air inlet port of the air inlet duct 21. The air intake fan 22 can adopt an existing fan structure.

[0039] As a result, the outside airflow is drawn into the air inlet pipe 21 by the air intake fan 22, and after being heated by the heating element, the hot airflow flows into the washing chamber 11 through the third through hole 12 to dry the tableware.

[0040] Preferably, the air inlet duct 21 has multiple air outlet ports, and correspondingly, the third through hole 12 has multiple ports, with at least two of the air inlet duct 21's air outlet ports arranged vertically at intervals. In this way, the drying structure 2 improves the uniformity of the flow field by introducing air into the washing chamber 11 from multiple points, further increasing the hot air coverage area and improving the drying effect.

[0041] Specifically, in this embodiment, the air inlet pipe 21 has three air outlet ports, one of which is located above the other two. Because the flow field in the lower part of the washing chamber 11 is more prone to unevenness, two third through holes 12 are correspondingly provided in the lower part. More preferably, a fan that can rotate around the center line of the third through hole 12 can also be provided in at least one of the third through holes 12. The fan can rotate under the action of a motor or be driven to rotate under the action of wind power to further improve the uniformity of the flow field.

[0042] The circulation accelerator has an air inlet 31 and an air outlet 32, both of which are connected to the washing chamber 11, and an airflow channel 33 connecting the air inlet 31 and the air outlet 32. The air inlet 31 is connected to the first through hole 13, and the air outlet 32 ​​is connected to the second through hole 14. Along the airflow direction, the air inlet 31 is located upstream of the air outlet 32. The circulation accelerator is also equipped with a circulation accelerator fan 4 for accelerating the airflow in the airflow channel 33. The circulation accelerator fan 4 can adopt an existing fan structure.

[0043] It can be seen that the airflow channel 33 in the circulation accelerator 3 and the washing chamber 11 form an internal circulation air duct. When the drying structure 2 blows air into the washing chamber 11, the airflow channel 33 in the circulation accelerator 3 accelerates the airflow and circulates it internally, thereby increasing the airflow speed and airflow coverage area in the washing chamber 11, dispersing the hot air flow field in the washing chamber 11, and improving the drying effect.

[0044] The airflow velocity from the first through hole 13 is V1, and the airflow velocity from the second through hole 14 is V2, where V2 > V1. More preferably, V2 - V1 ≥ 2 m / s, so that the airflow velocity re-entering the washing chamber increases, thereby improving the convective heat and mass transfer efficiency and thus improving the drying effect.

[0045] The airflow velocity exiting from the third through-hole 12 is V3, where V2 < V3, and more preferably, V2 / V3 ≥ 20%. Since dish drying primarily relies on the hot airflow input from the drying structure, V2 < V3 ensures sufficient airflow from the drying structure into the washing chamber, guaranteeing drying efficiency and effectiveness. During its flow within the washing chamber, the airflow is obstructed and slowed. After a secondary acceleration by the circulation accelerator, it returns to the washing chamber, maintaining the overall airflow velocity and thus ensuring airflow coverage and drying effect. Furthermore, the encounter of the two airflows with different velocities exiting from the second through-hole and the first through-hole further expands the airflow coverage area.

[0046] Preferably, the third through hole 12 and the first through hole 13 are at different heights. This way, after the airflow enters through the third through hole 12, it needs to flow to the first through hole 13 before it can flow out, thus lengthening the airflow path and improving the drying effect.

[0047] In this embodiment, the third through hole 12 is provided on the first side wall of the housing 1, and the first through hole 13 and the second through hole 14 are provided on the second side wall of the housing 1. The first side wall and the second side wall are arranged opposite to each other.

[0048] Of course, it is also possible that the first sidewall and the second sidewall are set adjacent to each other.

[0049] The above two methods place the circulation acceleration component 3 and the air inlet pipe 21 on the two side walls of the box 1 respectively, which provides a relatively spacious installation space and a longer airflow path, resulting in a better drying effect.

[0050] Alternatively, the third through hole 12, the first through hole 13, and the second through hole 14 can be located on the same side wall of the housing 1. In this case, the airflow needs to flow through the entire washing chamber 11 before returning to the first through hole 13. The airflow path is longer and the flow field is more uniform. However, the circulation acceleration component 3 and the air inlet pipe 21 are installed on the same side wall of the housing 1, which will result in a relatively cramped installation space.

[0051] like Figure 4 As shown, the airflow channel 33 includes an upward-extending section 331 and a downward-extending section 332. The air inlet 31 is located at the lower end of the upward section 331, and the air outlet 32 ​​is located on the downward section 332. This way, the air outlet 32 ​​is mounted high to prevent water in the washing chamber 11 from entering the airflow channel 33 during the washing process. Even if a small amount of water enters the airflow channel 33, it will flow back to the washing chamber 11 along the downward section 332.

[0052] The air inlet 31 is located below the air outlet 32, so that after the airflow enters the washing chamber 11 through the third through hole 12, it circulates internally from bottom to top, making the hot air flow field in the washing chamber 11 more dispersed.

[0053] like Figure 4 , 5 As shown, the airflow channel 33 is also provided with a water outlet 333, which is located above the air inlet 31. A condensate channel 334 is also provided between the water outlet 333 and the air inlet 31, so that the condensate water after the water vapor entering the airflow channel 33 is condensed during the washing and drying processes flows back into the washing chamber 11. The flow path of the condensate water is as follows. Figure 5 As shown by the middle arrow, this prevents the airflow from blowing condensate and generating noise. At the same time, because the airflow channel 33 is equipped with a circulation acceleration fan 4, the condensate is discharged from the condensate channel 334, which also prevents the condensate from entering the circulation acceleration fan 4.

[0054] To further prevent condensate from flowing into the circulating acceleration fan 4, the air outlet of the circulating acceleration fan 4 is located downstream of the water outlet 333 along the water flow direction, and a water-blocking rib 335 is provided between the two.

[0055] like Figure 4 As shown, the bottom wall of the circulation acceleration component 3 is provided with an inlet 34 and an outlet 35. The outlet 35 is connected to the washing chamber 11 of the tank 1. The connection between the two can be achieved using existing technology, such as the outlet 35 and the washing chamber 11 being connected by a water softener.

[0056] The circulation accelerator 3 includes a water flow channel 36 connecting the inlet 34 and the outlet 35. The water flow channel 36 includes an upwardly extending first section 361 and a downwardly extending second section 362. The lower end of the first section 361 is connected to the inlet 34, and the lower end of the second section 362 is connected to the outlet 35. The air inlet 31 is located beside the second section 362, and a siphon 363 connected to the air inlet 31 is provided on the side wall of the second section 362. In this way, the air inlet 31 can not only supply airflow but also connect with the siphon 363, ensuring the pressure balance of the water flow channel 36, making it a multi-purpose outlet.

[0057] In this embodiment, the circulation accelerator 3 is formed by welding two housings 3a together.

[0058] The exhaust structure is used to discharge the airflow in the washing chamber 11 to the outside. The housing 1 is provided with an exhaust port connected to the washing chamber 11. The exhaust structure includes an exhaust pipe and an exhaust fan. The air inlet end of the exhaust pipe is connected to the exhaust port, and the air outlet end of the exhaust pipe is connected to the outside. The exhaust structure adopts existing technology and can be installed on the door. Reference can be made to Chinese Utility Model Patent Application No. CN202321474862.9 (Publication No. CN220024969U), entitled "An Installation Structure for a Sensor on a Dishwasher and a Dishwasher," or to the patents cited in the background section.

[0059] The control method of the cleaning machine in this embodiment is as follows:

[0060] The external airflow is heated by the drying structure 2 and then transported into the washing chamber 11. During the flow, it mixes with the airflow in the washing chamber 11. Part of the airflow is discharged to the outside through the exhaust structure, while the other part enters the airflow channel 33, is accelerated by the circulating acceleration fan 4, and then flows back into the washing chamber 11, thereby increasing the airflow speed and airflow coverage area in the washing chamber 11.

[0061] To reduce energy consumption, the exhaust fan operates when the temperature and humidity values ​​in the washing chamber 11 are not lower than the set values, and does not operate when the temperature and humidity values ​​in the washing chamber 11 are lower than the set values.

[0062] Specifically as follows:

[0063] When the temperature value in the washing chamber 11 is not less than X and the humidity value is not less than Y, such as when the washing chamber 11 is in a high temperature and high humidity stage after the high temperature washing has just finished, the circulation acceleration fan 4, the intake fan 22 and the exhaust fan are all working. The external airflow is heated in the intake pipe 21 and then enters the washing chamber 11. During the flow, the hot airflow mixes with the original airflow in the washing chamber 11. During the flow, part of the mixed airflow is discharged to the outside through the exhaust pipe, and the other part circulates between the circulation acceleration component 3 and the washing chamber 11.

[0064] During the drying process, the hot air blown into the drying structure 2 is slowed down due to the obstruction of the tableware. The circulation acceleration component 3 draws in the hot air in the washing chamber 11 and blows it out again, providing secondary acceleration, increasing the airflow speed in the washing chamber 11, increasing the coverage area of ​​the hot air in the washing chamber 11, and the water vapor is quickly discharged from the washing chamber 11 through the exhaust structure, thus improving the drying effect.

[0065] When the temperature value in the washing chamber is less than X and the humidity value is less than Y, after drying for a period of time, the circulating acceleration fan 4 and the intake fan 22 are both working, while the exhaust fan is not working. The external airflow is heated in the intake pipe 21 and then flows into the washing chamber 11. During the flow, the hot airflow mixes with the original airflow in the washing chamber 11. During the flow, part of the mixed airflow is squeezed into the exhaust pipe and discharged to the outside, while the other part circulates between the circulating acceleration component 3 and the washing chamber 11.

[0066] During the drying process, the hot air blown in by the drying structure 2 is slowed down due to the obstruction of the tableware. The circulation acceleration component 3 draws in the hot air in the washing chamber and blows it out again, providing secondary acceleration, increasing the airflow velocity in the washing chamber 11, and increasing the coverage area of ​​the hot air in the washing chamber 11. Since the washing chamber 11 is already at a low temperature, the internal circulation of the circulation acceleration component 3 can also keep the hot air in the washing chamber 11 warm, more effectively increasing the surface temperature of the tableware and improving the drying effect.

[0067] To detect the temperature and humidity values ​​within the washing chamber 11, a temperature and humidity sensor is installed in the washing chamber 11 to detect the internal temperature and humidity values. The temperature and humidity sensor can use an existing structure. The washing machine also includes a controller, whose input terminal is electrically connected to the temperature and humidity sensor, and whose output terminal is electrically connected to the exhaust fan. The temperature and humidity sensor sends signals to the controller, and the controller controls whether the exhaust fan operates based on the collected temperature and humidity values.

[0068] The electrical connection between the controller, temperature and humidity sensor and exhaust fan is existing technology and will not be described in detail here.

Claims

1. A cleaning machine, comprising The box (1) has a washing chamber (11) inside; The drying structure (2) is used to heat the external airflow and then introduce it into the washing chamber (11); The exhaust structure is used to discharge the airflow in the washing chamber (11) to the outside. Its features are, Also includes The circulation accelerator (3) has an air inlet (31) and an air outlet (32) that are both connected to the washing chamber (11), and an airflow channel (33) that connects the air inlet (31) and the air outlet (32). The circulation accelerator (3) is also provided with a circulation accelerator fan (4) for accelerating the airflow in the airflow channel (33).

2. The cleaning machine according to claim 1, characterized in that: The housing (1) is provided with an exhaust port that is connected to the washing chamber (11). The exhaust structure includes an exhaust pipe and an exhaust fan that determines whether to work based on the temperature and humidity values ​​in the washing chamber (11). The air inlet of the exhaust pipe is connected to the exhaust port, and the air outlet of the exhaust pipe is connected to the outside.

3. The cleaning machine according to claim 2, characterized in that: The washing chamber (11) is equipped with a temperature and humidity sensor for detecting the temperature and humidity values ​​inside.

4. The cleaning machine according to claim 3, characterized in that: The cleaning machine also includes a controller, the input of which is electrically connected to a temperature and humidity sensor, and the output of which is electrically connected to an exhaust fan.

5. The cleaning machine according to any one of claims 1 to 4, characterized in that: The side wall of the housing (1) is provided with a first through hole (13) and a second through hole (14) that are connected to the washing chamber (11). The air inlet (31) is connected to the first through hole (13), and the air outlet (32) is connected to the second through hole (14). The air velocity of the air flowing out of the first through hole (13) is V1, and the air velocity of the air flowing out of the second through hole (14) is V2, where V2 > V1.

6. The cleaning machine according to claim 5, characterized in that: V2-V1≥2m / s.

7. The cleaning machine according to claim 5, characterized in that: The side wall of the housing (1) is provided with a third through hole (12) that communicates with the washing chamber (11). The drying structure includes an air inlet pipe (21) and a heating element provided in the air inlet pipe (21). The air inlet port of the air inlet pipe (21) is connected to the outside. The air outlet port of the air inlet pipe (21) is connected to the third through hole (12). The drying structure also includes an air intake fan (22) for driving the airflow from the air inlet port of the air inlet pipe (21) to the air outlet port. The flow velocity of the airflow flowing out from the third through hole (12) is V3, where V2 < V3.

8. The cleaning machine according to claim 7, characterized in that: V2 / V3 ≥ 20%.

9. The cleaning machine according to claim 7, characterized in that: The third through hole (12) and the first through hole (13) are at different heights.

10. The cleaning machine according to claim 7, characterized in that: The third through hole (12) is provided on the first side wall of the box body (1), and the first through hole (13) and the second through hole (14) are provided on the second side wall of the box body (1). The first side wall and the second side wall are arranged adjacent to each other, or the first side wall and the second side wall are arranged opposite to each other. Alternatively, the third through hole (12), the first through hole (13), and the second through hole (14) are located on the same side wall of the housing (1).

11. The cleaning machine according to any one of claims 1 to 4, characterized in that: The air inlet (31) is located below the air outlet (32).

12. The cleaning machine according to any one of claims 1 to 4, characterized in that: The airflow channel (33) includes an upward extending section (331) and a downward extending section (332), with the air inlet (31) located at the lower end of the upward section (331) and the air outlet (32) located on the downward section (332).

13. The cleaning machine according to claim 12, characterized in that: The upper section (331) is provided with a water outlet (333), which is located above the air inlet (31). A condensate channel (334) is also provided between the water outlet (333) and the air inlet (31).

14. The cleaning machine according to claim 13, characterized in that: Along the direction of water flow, the air outlet of the circulating acceleration fan (4) is located downstream of the water outlet (333), and a water-blocking rib (335) is provided between the two.

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