Cleaning device

Abstract

The invention discloses cleaning equipment, and belongs to the field of cleaning equipment. The cleaning equipment comprises an inner container, an exhaust assembly, an air duct, a fan and a heater. A cleaning cavity is formed in the inner container; the exhaust assembly is installed in the inner container and is configured to exhaust gas in the cleaning cavity under the condition that the exhaust assembly is opened. The air duct is installed in the inner container and provided with an air inlet, an air supplement inlet and an air outlet, the air inlet and the air outlet are both communicated with the cleaning cavity, and the air supplement inlet is communicated with the outside; the fan is mounted in the air duct, the air inlet and the air supplement inlet are both communicated with an inlet of the fan, and an outlet of the fan is communicated with the air outlet; the heater is configured to heat gas flowing through the air duct under the condition that the heater is started. The utilization rate of hot air heat energy is increased, the energy consumption of the hot air drying working mode of the cleaning equipment is reduced, and the overall moisture removal rate and the drying rate of the cleaning equipment are increased.

Description

Technical Field

[0001] This application belongs to the technical field of household appliances, and particularly relates to a cleaning device. Background Art

[0002] The drying methods of cleaning devices such as dishwashers include: condensation drying, hot air drying, adsorption drying, and quick drying by opening the door, etc. Among them, condensation drying has problems such as poor drying effect and long drying time, adsorption drying has problems such as high cost and peculiar smell after long-term storage, and quick drying by opening the door has problems such as easy entry of insects and the inability to automatically close the door in a timely manner and get damp in humid areas. Therefore, considering the comprehensive cost and drying effect, hot air drying has become the method chosen by most manufacturers.

[0003] Currently, most cleaning devices such as dishwashers rely on an external circulation system for hot air drying. Its working process is: sucking in outside air and heating it using a heater, and the heated outside air is introduced into the cleaning chamber to perform hot air drying on the items in the cleaning chamber. During the hot air drying process, outside air is sucked into the cleaning chamber, causing the cleaning chamber to form a positive pressure. In order to maintain the normal pressure of the cleaning chamber, the exhaust component of the cleaning device is usually turned on to reduce the problem of water vapor leakage caused by the positive pressure in the cleaning chamber.

[0004] In the above external circulation drying mode, the opening of the exhaust component will cause the thermal energy of the heated air to be discharged from the cleaning chamber without being fully utilized, resulting in energy waste. In related technologies, there appears a cleaning device that uses an internal circulation drying mode for drying, but there are still problems such as low drying efficiency and poor drying effect, and it needs to be improved. Summary of the Invention

[0005] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides a cleaning device, which improves the utilization rate of hot air thermal energy, reduces the energy consumption of the hot air drying working mode of the cleaning device, and improves the overall moisture removal rate and drying rate of the cleaning device compared with the cleaning device that performs hot air drying through external circulation.

[0006] In a first aspect, this application provides a cleaning device, including:

[0007] An inner container, the inner container forms a cleaning chamber;

[0008] An exhaust component, the exhaust component is installed on the inner container and is configured to discharge the gas in the cleaning chamber when it is turned on;

[0009] An air duct, the air duct is installed on the inner container and has an air inlet, a makeup air inlet, and an air outlet. The air inlet and the air outlet are both communicated with the cleaning chamber, and the makeup air inlet is communicated with the outside;

[0010] A blower, the blower is installed in the air duct, and both the air inlet and the make-up air inlet are communicated with the inlet of the blower, and the outlet of the blower is communicated with the air outlet;

[0011] A heater, the heater is configured to heat the gas flowing through the air duct when it is turned on.

[0012] According to the cleaning device provided by the embodiment of the present application, by providing an air duct, and the air duct has an air inlet, a make-up air inlet and an air outlet. On the one hand, the external circulation and / or internal circulation of the cleaning chamber can be realized to achieve various working modes of the cleaning device. Compared with the cleaning device that performs hot air drying through external circulation, the internal circulation drying working mode improves the utilization rate of hot air heat energy, reduces the energy consumption of the hot air drying working mode of the cleaning device, and realizes energy saving. On the other hand, by providing the make-up air inlet of the air duct to communicate with the outside, the air pressure balance in the cleaning chamber can be maintained through the make-up air inlet when the exhaust component is working, reducing the vacuum degree in the cleaning chamber, so that a higher exhaust rate can be maintained, quickly discharging the water vapor in the cleaning chamber, improving the overall moisture discharge rate and drying rate of the cleaning device, and further reducing the energy consumption of hot air drying.

[0013] According to an embodiment of the present application, the cleaning device has an internal circulation drying working mode. In the internal circulation drying working mode, the blower and the heater work, and the exhaust component stops;

[0014] And / or, the cleaning device has a mixed working mode; in the mixed working mode, the blower, the heater and the exhaust component all work, and the air flow rate inhaled from the air inlet is less than the air flow rate inhaled from the make-up air inlet.

[0015] According to an embodiment of the present application, the inlet of the blower is arranged facing the air inlet below, and is spaced apart from the bottom shell of the air duct to form a lateral make-up air port, and the make-up air port is communicated with the make-up air inlet.

[0016] According to an embodiment of the present application, the blower includes: an upper shell, an impeller and a motor assembly. The motor assembly is power-coupled to the impeller. The upper shell of the air duct has a downwardly protruding mounting shell. The upper shell is connected to the mounting shell to form a receiving cavity. The impeller is installed in the receiving cavity, and the mounting shell is spaced apart from the bottom shell of the air duct to form the make-up air port.

[0017] According to an embodiment of the present application, the blower is installed above the top wall of the inner tank. The air duct includes: a make-up air branch, the make-up air branch extends from the top wall of the inner tank to the side of the inner tank, and the lower end of the make-up air branch forms a make-up air inlet located on the side of the inner tank.

[0018] According to an embodiment of the present application, the air duct further includes: a main air duct, a first branch, and a second branch. An air inlet is formed at a first end of the main air duct. First ends of the first branch and the second branch are both connected to a second end of the main air duct. Second ends of the first branch and the second branch respectively form a first air outlet and a second air outlet. The air inlet, the first air outlet, and the second air outlet are all communicated with the cleaning chamber; the air supply branch is arranged side by side with the main air duct.

[0019] According to an embodiment of the present application, the first branch extends obliquely forward and downward from the first end to the second end, and the air supply inlet faces an upper side wall of the first branch.

[0020] According to an embodiment of the present application, the height of the cleaning chamber is H0, and the length of the air supply branch is L3, satisfying: L3≥0.5H0.

[0021] According to an embodiment of the present application, when the exhaust component and the fan are working, the exhaust volume of the exhaust component is not less than the air supply volume of the air supply inlet.

[0022] According to an embodiment of the present application, it further includes: a side plate. The heater is installed in a region of the air duct on the side of the inner tank. The side plate is installed on a side wall of the inner tank and covers at least a part of the air duct.

[0023] According to an embodiment of the present application, there is a gap between an inner side surface of the side plate and the air duct, and the gap is c, satisfying c≥2mm.

[0024] According to an embodiment of the present application, the power of the heater is P, satisfying: P≤500W.

[0025] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 is one of the structural schematic diagrams of the cleaning device provided by the embodiment of the present application;

[0028] Figure 2 is another structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0029] Figure 3 is one of the structural schematic diagrams of the internal circulation component provided by the embodiment of the present application;

[0030] Figure 4 It is the second structural schematic diagram of the internal circulation component provided by the embodiment of the present application;

[0031] Figure 5 It is the third structural schematic diagram of the internal circulation component provided by the embodiment of the present application;

[0032] Figure 6 It is the third structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0033] Figure 7 It is the fourth structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0034] Figure 8 It is the fifth structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0035] Figure 9 It is Figure 8 The partial enlarged view of A in

[0036] Figure 10 It is the sixth structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0037] Figure 11 It is Figure 10 The partial enlarged view of B in

[0038] Figure 12 It is the seventh structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0039] Figure 13 It is the eighth structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0040] Figure 14 It is the ninth structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0041] Figure 15 It is the fourth structural schematic diagram of the internal circulation component provided by the embodiment of the present application;

[0042] Figure 16 It is the structural schematic diagram of the flexible connector provided by the embodiment of the present application;

[0043] Figure 17 It is the structural schematic diagram of the lower air duct provided by the embodiment of the present application;

[0044] Figure 18 It is the structural schematic diagram of the upper air duct provided by the embodiment of the present application;

[0045] Figure 19 It is the structural schematic diagram of the main body provided by the embodiment of the present application;

[0046] Figure 20 It is the tenth structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0047] Figure 21 It is Figure 20 the partial enlarged view at position D in

[0048] Figure 22 It is the eleventh structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0049] Figure 23 It is Figure 22 the partial enlarged view at position C in

[0050] Figure 24 It is the twelfth structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0051] Figure 25 It is Figure 22 the partial enlarged view at position E in

[0052] Figure 26 It is one of the structural schematic diagrams of the water baffle provided by the embodiment of the present application;

[0053] Figure 27 It is the second structural schematic diagram of the water baffle provided by the embodiment of the present application;

[0054] Figure 28 It is the third structural schematic diagram of the water baffle provided by the embodiment of the present application;

[0055] Figure 29 It is the fourth structural schematic diagram of the water baffle provided by the embodiment of the present application;

[0056] Figure 30 It is the fifth structural schematic diagram of the water baffle provided by the embodiment of the present application;

[0057] Figure 31 It is the sixth structural schematic diagram of the water baffle provided by the embodiment of the present application.

[0058] Reference numerals:

[0059] Inner container 1, cleaning chamber 11, first side surface 111, second side surface 112; top wall 12, side wall 13, back plate 14, front end opening 15, bottom wall 16;

[0060] Inner circulation component 2, air inlet end 20, flanging 201; air duct 21, air inlet 211, air outlet 212, air supply branch 213, air supply inlet 2131;

[0061] Upper air duct 214, horizontal section 2141, lower connection section 2142, first connection structure 2143; fan installation position 2146, first air guiding section 2147, volute tongue 2148, arc section 21481, straight section 21482; second air guiding section 2149;

[0062] Lower air duct 215, first branch 2151, second branch 2152, expansion section 2154, isolation plate 2155; main air duct 216, bottom shell 210, air supply opening 2102, grille 2156; main body part 2158, upper connection section 21581, air duct shell 21582, third connection structure 21583, heat spreader 21584, heater installation position 21585, thermostat installation position 21586, cover body 2157, fourth connection structure 21571;

[0063] Flexible connector 217, cover plate 2171, second connection structure 21711, sleeve 2172, avoidance hole 2173;

[0064] Fan 22, upper shell 221, impeller 222; heater 23;

[0065] Water retaining cover 24; water retaining plate 241, annular rib 2411, installation structure 242, card slot 2421, connecting piece 2422, hollowed-out groove 24221, card joint 2423;

[0066] Main cover body 243, pipe body 2431, ventilation duct 2432, flange 2433, sealing installation position 24331, protruding part 24332, reinforcing rib 24333, water guiding port 2434; water retaining part 244, first plate 2441, second plate 2442, guiding surface 2443;

[0067] Sealing device 25; thermostat 29; side plate 3, exhaust component 4, air inlet 41, bowl basket 5. Specific embodiments

[0068] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0069] The following reference Figures 1 - 31 Describe the cleaning device according to the embodiments of the present application. The cleaning device of the present application can clean and dry various items such as tableware or clothes. [[ID=??]] [[ID=??]]

[0070] It should be noted that there seems to be some incorrect or incomplete tags in the original text (such as the two consecutive "??" tags). Please check and correct if necessary.Among them, the cleaning device can be a device with a hot air drying function such as a dishwasher, a dryer or a shoe washing machine. In the embodiments of the present invention, the cleaning device includes a cleaning function and a hot air drying function. The cleaning mechanism in the cleaning function cleans the items in the cleaning chamber. After the cleaning is completed, the hot air drying process starts, and drying the items in the cleaning chamber can reduce the growth of bacteria. For the convenience of description, the present application takes a dishwasher as an example for elaboration.

[0071] As Figure 1 , Figure 2 and Figure 3 shown, the cleaning device of the embodiment of the present application includes: an inner container 1, an exhaust assembly 4, an air duct 21, a fan 22 and a heater 23.

[0072] The inner container 1 forms a cleaning chamber 11; the exhaust assembly 4 is installed on the inner container 1 and is configured to discharge the gas in the cleaning chamber 11 when it is opened; the air duct 21 is installed on the inner container 1 and has an air inlet 211, a make-up air inlet 2131 and an air outlet 212. Both the air inlet 211 and the air outlet 212 are communicated with the cleaning chamber 11, and the make-up air inlet 2131 is communicated with the outside; the fan 22 is installed in the air duct 21, and both the air inlet 211 and the make-up air inlet 2131 are communicated with the inlet of the fan 22, and the outlet of the fan 22 is communicated with the air outlet 212; the heater 23 is configured to heat the gas flowing through the air duct 21 when it is opened.

[0073] Among them, as Figure 1 shown, the inner container 1 includes a top wall 12, a bottom wall 16, a back plate 14, side walls 13 and a front opening 15. The top wall 12, the bottom wall 16, the back plate 14 and the side walls 13 of the inner container 1 enclose the cleaning chamber 11. The top wall 12 of the inner container 1 is the top wall 12 of the cleaning chamber 11, the side walls 13 of the inner container 1 are the sides of the cleaning chamber 11, the back plate 14 of the inner container 1 is the back of the cleaning chamber 11, and the bottom wall 16 of the inner container 1 is the bottom surface of the cleaning chamber 11.

[0074] The cleaning device may further include a cover plate, which is pivotally connected to the inner container 1 and can rotate relative to the inner container 1 to open and close the front opening 15 of the inner container 1, so as to facilitate putting in or taking out items from the cleaning chamber 11. The cover plate and the top wall 12, the bottom wall 16, the back plate 14 and the side walls 13 of the inner container 1 enclose the cleaning chamber 11.

[0075] The cleaning chamber 11 is used to place the items to be cleaned. The items to be cleaned can be cleaned and dried in the cleaning chamber 11. The items to be cleaned can be tableware such as bowls, chopsticks, plates and pots.

[0076] As Figure 1As shown, the cleaning chamber 11 can have an article placement rack, which can include brackets such as a bowl basket 5, a chopstick rack, and a cup rack. The article placement rack can fix and support tableware, and at the same time can also divide the space of the cleaning chamber 11, increasing the space utilization rate of the cleaning chamber 11.

[0077] The cleaning chamber 11 can also have a spray arm, which is used to spray high-pressure water flow. The high-pressure water flow can spray and flush the tableware in the cleaning chamber 11 to wash off the dirt attached to the tableware, thereby realizing the flushing of the tableware. Multiple spray arms can be provided, and the multiple spray arms can be installed at different positions of the cleaning chamber 11 to spray the tableware in multiple directions, at multiple angles, and at multiple levels, improving the cleaning effect of the tableware.

[0078] Among them, the air duct 21 can be used to realize the circulation of air in the cleaning chamber 11, for example, it can realize internal air circulation, external air circulation, or a mixture of internal and external air circulation. The air duct 21 can be installed on the outside or inside of the inner tank 1, and the air duct 21 can be connected to the wall surface of the inner tank 1 by means of snap connection, threaded connection, or welding.

[0079] As Figure 2 and Figure 5 shown, the air duct 21 has an air inlet 211 and an air outlet 212 communicating with the cleaning chamber 11. The gas in the cleaning chamber 11 is sucked into the air duct 21 from the air inlet 211 of the air duct 21 by the fan 22, and the hot air heated by the heater 23 enters the cleaning chamber 11 from the air outlet 212 of the air duct 21, forming an internal circulation. The hot air can hot-air dry articles such as tableware in the cleaning chamber 11.

[0080] The air make-up inlet 2131 of the air duct 21 communicates with the outside. The outside gas is drawn into the air duct 21 by the fan 22. The outside gas can enter the cleaning chamber 11 from the air outlet 212 of the air duct 21 after being heated by the heater 23, or can directly enter the cleaning chamber 11 to balance the air pressure in the cleaning chamber 11 and reduce the vacuum degree in the cleaning chamber 11.

[0081] By setting the air inlet 211, the air make-up inlet 2131, and the air outlet 212 of the air duct 21, the external circulation and / or internal circulation of the cleaning chamber 11 can be realized to achieve multiple working modes of the cleaning device.

[0082] During the operation of only the blower 22, in order to maintain the pressure balance in the cleaning chamber 11, the blower 22 will preferably only suck the air inside the cleaning chamber 11 as much as possible to achieve a basic internal circulation. At this time, the air volume of the internal circulation is much larger than that of the external circulation, so that the temperature and humidity inside the cleaning chamber 11 can be quickly increased; when the blower 22 and the exhaust assembly 4 work simultaneously, the exhaust assembly 4 extracts and discharges the air inside the cleaning chamber 11. At this time, the blower 22 will mainly introduce external air, and a small amount of the air inside the chamber is sucked in for circulation. At this time, the internal and external circulations are carried out simultaneously, which can effectively meet the rapid dehumidification requirements during the dehumidification stage.

[0083] In the related art, the single internal circulation scheme helps to circulate and heat the gas to be dried inside the cleaning chamber 11 and reach a suitable temperature. However, the single internal circulation scheme also requires the exhaust assembly 4 to gradually discharge the evaporated water vapor. During the discharge stage, without the introduction of external gas, the exhaust assembly 4 will gradually draw the cleaning chamber 11 into a negative pressure, and the negative pressure will cause the gradual decrease of the exhaust rate, resulting in that the overall dehumidification rate of the cleaning equipment is not well improved.

[0084] In this application, by providing the air supply inlet 2131 of the air duct 21 communicating with the outside, the air pressure balance inside the cleaning chamber 11 can be maintained through the air supply inlet 2131 when the exhaust assembly 4 is working, and the vacuum degree inside the cleaning chamber 11 can be reduced, so that a higher exhaust rate can be maintained, the water vapor inside the cleaning chamber 11 can be quickly discharged, the overall dehumidification rate and drying rate of the cleaning equipment can be improved, and the energy consumption of hot air drying can be further reduced.

[0085] In this embodiment, the air inlet 211, the air supply inlet 2131 and the air outlet 212 can be located on the same wall surface of the inner tank 1, or on different wall surfaces of the inner tank 1, which is specifically set according to the use scenario. The number and ventilation area of the air inlet 211, the air supply inlet 2131 and the air outlet 212 of the air duct 21 can be set according to the specific use scenario.

[0086] Among them, the inlet of the blower 22 is communicated with the air inlet 211 of the air duct 21, and the outlet of the blower 22 is communicated with the air outlet 212 of the air duct 21 to drive the gas inside the air duct 21 through the blower 22.

[0087] The blower 22 drives the gas inside the air duct 21 to flow from the air inlet 211 of the air duct 21 to the air outlet 212 of the air duct 21, that is, the gas inside the cleaning chamber 11 is sucked into the air duct 21 by the blower 22, heated by the heater 23 and then driven by the blower 22 to be discharged into the cleaning chamber 11 from the air duct 21, forming an internal circulation.

[0088] The blower 22 is installed in the air duct 21, and the blower 22 can be connected to the air duct 21 by means of snap connection, threaded connection or plugging and unplugging, etc. The blower 22 can be installed at the air inlet 211, the air outlet 212 of the air duct 21 or between the air inlet 211 and the air outlet 212. The blower 22 can be a device capable of driving gas flow, such as a centrifugal air supply device, an exhaust fan or a ventilation air supply device, etc.

[0089] The blower 22 is communicated with the air inlet 211 and the make-up air inlet 2131 of the air duct 21, so that when the blower 22 is turned on, the gas in the cleaning chamber 11 and / or the outside gas are drawn into the air duct 21, and are discharged from the outlet of the blower 22 into the air outlet 212 of the air duct 21 and then discharged into the cleaning chamber 11 under the drive of the blower 22.

[0090] In the drying working mode of the cleaning device, the dry gas in the cleaning chamber 11 is circularly heated by the heater 23 and reaches a suitable temperature and humidity to perform hot air drying on the tableware in the cleaning chamber 11.

[0091] Among them, the heater 23 can adopt heating methods such as electromagnetic heating, infrared heating or resistance heating to heat the gas flowing through the air duct 21. The heater 23 adopting resistance heating can be a PTC (Positive Temperature Coefficient) heating device, a resistance wire heating device or a resistance coil heating device, etc.

[0092] When the heater 23 is turned on, it heats the gas flowing through the air duct 21. The heater 23 can be installed in the air duct 21 to be in direct contact heat exchange with the gas flowing through the air duct 21; the heater 23 can also be installed outside the air duct 21 to indirectly exchange heat with the gas flowing through the air duct 21 through heating the pipe wall of the air duct 21.

[0093] In this embodiment, the blower 22 and the heater 23 form the internal circulation component 2 of the cleaning device. The internal circulation component 2 is used for circularly heating the gas in the cleaning chamber 11, and providing the heat required for drying the tableware and the air flow velocity required for convection.

[0094] Among them, the exhaust component 4 is a related component capable of creating normal pressure or negative pressure in the cleaning chamber 11. The exhaust component 4 can be a fluid machine with an exhaust function such as a blower 22 or an air pump. When the cleaning chamber 11 is performing hot air drying, the exhaust component 4 is used to discharge the water vapor that has evaporated or volatilized in the cleaning chamber 11 together with the gas, so as to reduce the relative humidity of the air in the cleaning chamber 11, which is beneficial to the evaporation of more residual water.

[0095] Among them, the air outlet 212 of the air duct 21 is used to discharge the gas heated by the heater 23 into the cleaning chamber 11. The air inlet 41 of the exhaust assembly 4 is communicated with the cleaning chamber 11, and the air inlet 41 of the exhaust assembly 4 is used to discharge the water vapor that has evaporated or volatilized in the cleaning chamber 11 out of the cleaning chamber 11 together with the gas.

[0096] The gas heated by the heater 23 is discharged from the air outlet 212 of the air duct 21 into the cleaning chamber 11. At least part of the hot gas is discharged from the air inlet 41 of the exhaust assembly 4 out of the cleaning chamber 11 together with the water vapor. The flow path of at least part of the hot gas is from the air outlet 212 of the air duct 21 to the air inlet 41 of the exhaust assembly 4.

[0097] Among them, the internal circulation assembly 2 and the exhaust assembly 4 can be operated in a co - opening or separate - opening mode.

[0098] When only the internal circulation assembly 2 is operating, the air in the cleaning chamber 11 is circulated and heated, and the heat is also evenly distributed. The colder areas in the cleaning chamber 11 can be evaporated and dried faster through heat transfer and convective heat transfer, which is beneficial to the drying of the entire cavity in the cleaning chamber 11 and reduces the drying dead corners.

[0099] When only the exhaust assembly 4 is working, due to the lack of external air supplement, the cleaning chamber 11 is pumped into a negative pressure state by the exhaust assembly 4, and the negative pressure environment also helps to improve the drying rate.

[0100] When the internal circulation assembly 2 and the exhaust assembly 4 work simultaneously, the fan 22 can circulate the air in the cleaning chamber 11, making the temperature and humidity distribution in the cleaning chamber 11 uniform, and further improving the effect of uniform drying of the entire cavity.

[0101] According to the cleaning device provided by the embodiment of the present application, by setting the air duct 21, and the air duct 21 has an air inlet 211, a makeup air inlet 2131 and an air outlet 212. On the one hand, the external circulation and / or internal circulation of the cleaning chamber 11 can be realized to achieve multiple working modes of the cleaning device. Compared with the cleaning device that performs hot air drying through external circulation, the internal circulation drying working mode improves the utilization rate of hot air heat energy, reduces the energy consumption of the hot air drying working mode of the cleaning device, and realizes energy saving. On the other hand, by setting the makeup air inlet 2131 of the air duct 21 to communicate with the outside, the air pressure balance in the cleaning chamber 11 can be maintained through the makeup air inlet 2131 when the exhaust assembly 4 is working, reducing the vacuum degree in the cleaning chamber 11, so that a higher exhaust rate can be maintained, quickly discharging the water vapor in the cleaning chamber 11, improving the overall moisture removal rate and drying rate of the cleaning device, and further reducing the energy consumption of hot air drying.

[0102] Among them, the cleaning device has at least the following working modes:

[0103] First, the cleaning device has an internal circulation drying working mode. In the internal circulation drying working mode, the fan 22 and the heater 23 work, and the exhaust component 4 stops operating;

[0104] During the operation of only the fan 22, in order to maintain the pressure balance in the cleaning chamber 11, the fan 22 will preferably only draw in the air inside the cleaning chamber 11 to achieve a basic internal circulation. At this time, the air volume of the internal circulation is much larger than that of the external circulation, so that the temperature and humidity inside the cleaning chamber 11 can be rapidly increased.

[0105] In the internal circulation drying working mode, the gas inside the cleaning chamber 11 is drawn into the air duct 21 by the fan 22 from the air inlet 211 of the air duct 21, and the hot air heated by the heater 23 enters the cleaning chamber 11 from the air outlet 212 of the air duct 21. The air inside the cleaning chamber 11 is circularly heated, and the heat is also evenly distributed. The relatively cold area inside the cleaning chamber 11 can be evaporated and dried faster through heat transfer and convective heat transfer, which is beneficial to the drying of the entire cavity inside the cleaning chamber 11 and reduces the drying dead angle.

[0106] When the temperature and humidity inside the cleaning chamber 11 are too low, by turning on the fan 22 and the heater 23, forced convection and circular heating inside the cleaning chamber 11 can be achieved, accelerating the evaporation of the remaining water inside the cleaning chamber 22.

[0107] Second, the cleaning device has a mixed working mode; in the mixed working mode, the fan 22, the heater 23, and the exhaust component 4 all work, and the air flow rate inhaled from the air inlet 211 is less than the air flow rate inhaled from the air supply inlet 2131.

[0108] In the mixed working mode, the fan 22, the heater 23, and the exhaust component 4 all work. The fan 22 can circulate the air inside the cleaning chamber 11 to make the temperature and humidity distribution inside the cleaning chamber 11 uniform, further improving the effect of uniform drying of the entire cavity.

[0109] In this embodiment, when the fan 22 and the exhaust component 4 work simultaneously, the air inside the cleaning chamber 11 inhaled by the fan 22 is less than the air flow rate of the external air inhaled from the air supply inlet 2131. The exhaust component 4 extracts and discharges the air inside the cleaning chamber 11. At this time, the fan 22 will mainly introduce external air, and a small amount of the air inside the cavity is inhaled for circulation. At this time, the internal and external circulations are carried out simultaneously, which can effectively meet the rapid moisture removal requirements during the moisture removal stage.

[0110] Third, the cleaning device has a moisture removal working mode;

[0111] In the moisture removal working mode, the fan 22 and the heater 23 stop operating, and the exhaust component 4 works. Due to the supplement of external air, air circulation is formed inside the cleaning chamber 11. At this time, the moisture inside the cleaning chamber 11 is quickly extracted by the exhaust component 4 to achieve rapid moisture removal.

[0112] Fourthly, the cleaning device has a mixed dehumidification working mode;

[0113] In the mixed dehumidification working mode, the fan 22 and the exhaust component 4 both work, and the heater 23 stops working, so as to realize the mixing and dehumidification of the air in the cleaning chamber 11, and further improve the effect of uniform dehumidification of the whole chamber.

[0114] In some embodiments, as Figure 4 and Figure 5 shown, the inlet of the fan 22 is arranged facing the lower air inlet 211, and is spaced apart from the bottom shell 210 of the air duct 21 to form a lateral air supplement port 2102, and the air supplement port 2102 is communicated with the air supplement inlet 2131.

[0115] In this embodiment, as shown in the figure, the position of the fan 22 is moved upward in the direction away from the bottom shell 210 of the air duct 21, the inlet of the fan 22 faces the air inlet 211 of the air duct 21, and an air supplement port 2102 that can simultaneously suck external gas is introduced on the side of the air inlet 211 of the air duct 21.

[0116] During the operation of the fan 22, the fan 22 simultaneously introduces the air outside and in the cleaning chamber 11 to realize the simultaneous progress of the internal circulation and the external circulation. Figure 4 In the figure, the hollow arrow is the external circulation, and air is supplemented through the air supplement branch 213 of the air duct 21. The solid arrow is the internal circulation. The air inlet 211 is placed in the cleaning chamber 11, and the fan 22 sucks the gas in the cleaning chamber 11 into the air duct 21 through the air inlet 211 for internal circulation heating.

[0117] In some embodiments, as Figure 4 shown, in the internal circulation, the gas in the cleaning chamber 11 is discharged from the outlet of the fan 22, undergoes a 90° bend, passes through the heater 23 and the downstream air duct 21, and is dispersed to the air outlet 212 of the air duct 21 and then introduced into the cleaning chamber 11.

[0118] In some embodiments, as Figure 4 and Figure 10 shown, the fan 22 is installed above the top wall 12 of the inner tank 1. The air duct 21 includes: an air supplement branch 213, and the air supplement branch 213 extends from the top wall 12 of the inner tank 1 to the side of the inner tank 1, and the lower end of the air supplement branch 213 forms an air supplement inlet 2131 located on the side of the inner tank 1.

[0119] Among them, the fan 22 is installed above the top wall 12 of the inner tank 1, without occupying the internal space of the cleaning chamber 11, thereby increasing the capacity of the cleaning chamber 11.

[0120] Among them, the fan 22 can be installed above the top wall 12 of the cleaning chamber 11, with the suction side of the fan 22 facing the cleaning chamber 11. When the fan 22 is running, the air with high temperature in the upper part of the cleaning chamber 11 can be introduced into the bottom of the cleaning chamber 11 through the air duct 21, which is beneficial to the uniformity of temperature distribution in the entire cleaning chamber 11.

[0121] In actual use, when the cleaning equipment is matched with an automatic door opening or automatic door opening and closing solution as the main means of dehumidification, the hot air in the cleaning chamber 11 will move upward and backward in the cleaning chamber 11 due to natural convection. This installation position of the air inlet 211 and the fan 22 can avoid a large amount of hot and humid air from remaining in the upper part of the cleaning chamber 11, reduce drying dead corners, and help improve the overall drying effect and rate.

[0122] In this embodiment, the fan 22 can be installed above the top wall 12 of the cleaning chamber 11. The thickness of the fan 22 is not less than 20 mm. For example, the thickness of the fan 22 can be 5 mm, 10 mm, 15 mm or 18 mm. By setting the thickness of the fan 22, it can be suitable for the dimensions between the top wall 12 of various inner tanks 1 and the outer shell of the cleaning equipment, thereby increasing the circulating air volume, thereby increasing the power of the heater 23 and better drying effect.

[0123] In this embodiment, the air duct 21 includes two branches, an internal circulation and an external circulation. The air inlet 2131 of the air supply branch 213 is connected to the outside world, and the air outlet of the air supply branch 213 is connected to the cleaning chamber 11. The setting of the air supply branch 213 forms an external circulation branch of the cleaning chamber 11; the branch having the air inlet 211 and the air outlet 212 connected to the cleaning chamber 11 belongs to the internal circulation branch.

[0124] The air supply branch 213 extends to the side of the inner tank 1 to improve the integration of the cleaning equipment, does not occupy the height dimension of the cleaning equipment, and increases the capacity of the cleaning chamber 11.

[0125] By providing the air supply branch 213 , external circulation and / or internal circulation of the cleaning chamber 11 can be achieved, thereby realizing various working modes of the cleaning device.

[0126] In some embodiments, the air inlet 211 of the air duct 21 is disposed on the top wall 12 of the cleaning chamber 11 in an area close to the side surface and the back panel 14 .

[0127] In this embodiment, the air inlet 211 of the air duct 21 is located at the rear corner of the top wall 12 of the cleaning chamber 11, which can further reduce the impact of the air inlet 211 on the pushing and pulling of the bowl basket 5, thereby increasing the depth and width of the bowl basket 5 and improving the storage capacity of the bowl basket 5.

[0128] In some embodiments, as Figure 1 and Figure 3As shown, the air duct 21 further includes: a main air duct 216, a first branch 2151 and a second branch 2152. An air inlet 211 is formed at the first end of the main air duct 216. The first ends of the first branch 2151 and the second branch 2152 are both connected to the second end of the main air duct 216. A first air outlet and a second air outlet are respectively formed at the second ends of the first branch 2151 and the second branch 2152. The air inlet 211, the first air outlet and the second air outlet are all communicated with the cleaning chamber 11. The air supply branch 213 is arranged side by side with the main air duct 216.

[0129] In this embodiment, the air inlet 211, the first outlet and the second air outlet of the air duct 21 may be located on the same wall surface of the inner tank 1, or may be located on different wall surfaces of the inner tank 1, which is specifically set according to the use scenario. The ventilation areas of the air inlet 211, the first air outlet and the second air outlet of the air duct 21 can be set according to the specific use scenario.

[0130] By providing a plurality of air outlets 212, the uniform flow of air in the cleaning chamber 11 can be improved, the uniformity of temperature and humidity can be improved, and the drying dead corners can be reduced.

[0131] Among them, the main air duct 216, the first branch 2151 and the second branch 2152 form an air duct 21 similar to a "Y" shape. The upper end of the first branch 2151 and the first end of the second branch 2152 are both connected to the main air duct 216. The lengths and angles of the first branch 2151 and the second branch 2152 can be the same or different, which is specifically set according to the actual use scenario.

[0132] Among them, the air supply branch 213 is arranged side by side with the main air duct 216. The air supply branch 213 can be located on one side of the main air duct 216 close to the front opening 15 of the inner tank 1, or can be located on one side of the main air duct 216 close to the back plate 14 of the inner tank 1, so as to improve the integration of the cleaning device, not occupy the size in the length direction of the cleaning device, and increase the capacity of the cleaning chamber 11.

[0133] In this embodiment, the internal circulation components 2 such as the fan 22 and the heater 23 can be located in the main air duct 216, so as to realize that one fan 22 can drive the gas flow in the first branch 2151 and the second branch 2152, and one heater 23 can heat the gas flowing through the first branch 2151 and the second branch 2152, reducing the cost. At the same time, a plurality of air outlets 212 can improve the uniform flow of air in the cleaning chamber 11, improve the uniformity of temperature and humidity, and reduce the drying dead corners.

[0134] In some embodiments, as Figure 1 and Figure 2 shown, the first branch 2151 extends obliquely forward and downward from the first end to the second end, and the air supply inlet 2131 faces the upper side wall 13 of the first branch 2151.

[0135] In this embodiment, the first branch 2151 forms an angle with the main air duct 216, and the air supply inlet 2131 faces the upper side wall 13 of the first branch 2151, that is, the air supply inlet 2131 is located within the angle between the first branch 2151 and the main air duct 216, further improving the integration of the cleaning device, not occupying the dimension in the length direction of the cleaning device, and increasing the capacity of the cleaning chamber 11.

[0136] Among them, the first air outlet and the second air outlet can be distributed at intervals in the front-back direction of the cleaning chamber 11. The first branch 2151 extends obliquely in the front-back direction of the inner tank 1, and the second branch 2152 can extend obliquely backward and downward in the front-back direction of the inner tank 1, or the second branch 2152 can also extend downward in the height direction of the inner tank 1.

[0137] By making the centers of the first air outlet and the second air outlet be distributed at intervals in the front-back direction of the cleaning chamber 11, air outlets 212 of the air duct 21 can be provided in both the front half and the rear half of the cleaning chamber 11, balancing the humidity and temperature in the front half and the rear half of the cleaning chamber 11, so as to further improve the uniform distribution of the circulating heating temperature in the cleaning chamber 11.

[0138] In some embodiments, as Figure 2 shown, the air flow in the main air duct 216 flows obliquely forward, the first branch 2151 is located in front of the second branch 2152, and the length of the first branch 2151 in the front is greater than that of the second branch 2152.

[0139] Among them, the air duct 21 includes one air inlet 211 communicating with the cleaning chamber 11 and two air outlets 212. The first air outlet and the second air outlet are distributed at intervals in the front-back direction of the cleaning chamber 11, and the length of the first branch 2151 is greater than that of the second branch 2152. The gas in the cleaning chamber 11 is sucked from the top wall 12 of the cleaning chamber 11 into the air inlet 211 of the air duct 21 by the fan 22, then driven by the fan 22 to turn along the air duct 21 to the lower half of the air duct 21 on the side of the cleaning chamber 11, and is discharged from the two front and rear air outlets 212 of the lower half of the air duct 21 after being heated by the heater 23.

[0140] In this embodiment, due to the rotation of the impeller 222 of the fan 22 to draw air, the air flow entering the main air duct 216 flows obliquely forward. By setting the length of the first branch 2151 to be greater than that of the second branch 2152, the air volumes of the front and rear air outlets 212 of the first branch 2151 and the second branch 2152 can be made substantially equal, so as to further improve the uniform distribution of the circulating heating temperature in the cleaning chamber 11.

[0141] In some embodiments, as Figure 2As shown, the height of the cleaning chamber 11 is H0, and the length of the air supply branch 213 is L3, satisfying: L3 ≥ 0.5H0.

[0142] Among them, the length L3 of the air supply branch 213 can be 0.5H0, 0.7H0 or 0.8H0, that is, the position of the air supply inlet 2131 is located in the lower middle part of the cleaning chamber 11, so as to facilitate the entry of external air into the air supply branch 213.

[0143] By setting the length of the air supply branch 213, the occupation of the space outside the inner liner 1 by the air supply branch 213 can be reduced, and the integration of the cleaning device can be improved.

[0144] In some embodiments, such as Figure 6 and Figure 7 As shown, the cleaning chamber 11 has a first side 111 and a second side 112 arranged oppositely. The air outlet 212 of the air duct 21 is located on the second side 112, and the distance from the center of the air inlet 211 of the air duct 21 to the second side 112 is less than the distance from the center of the air inlet 211 to the first side 111.

[0145] In this embodiment, the exhaust assembly 4 can be installed on the first side 111. The exhaust assembly 4 and the air outlet 212 are respectively located on the relatively arranged first side 111 and second side 112. The air inlet 211 is located at a position close to the second side 112 where the air outlet 212 is located, that is, the air inlet 211 is far from the exhaust assembly 4.

[0146] By arranging the exhaust assembly 4 and the air outlet 212 on the relatively arranged sides and arranging the air inlet 211 far from the exhaust assembly 4, when the exhaust assembly 4 and the fan 22 work simultaneously, the flow path of the gas heated by the heater 23 in the cleaning chamber 11 can be extended, the utilization efficiency of the hot air heat energy can be improved, the energy consumption of the hot air drying working mode of the cleaning device can be reduced, energy saving can be achieved, and at the same time, the uniformity of the gas mixing in the cleaning chamber 11 can be improved, and the drying dead angle can be reduced.

[0147] In some embodiments, such as Figure 9 and Figure 11 As shown, the fan 22 includes: an upper shell 221, an impeller 222 and a motor assembly. The motor assembly is power-coupled to the impeller 222. The upper shell 221 of the air duct 21 has a downwardly protruding mounting shell. The upper shell 221 is connected to the mounting shell to form a receiving cavity. The impeller 222 is installed in the receiving cavity. The mounting shell is spaced apart from the bottom shell 210 of the air duct 21 to form an air supply port 2102.

[0148] The air duct 21 includes an upper shell 221 and a bottom shell 210. The upper shell 221 and the mounting shell form a receiving cavity for mounting the fan 22. For the fan 22, only the upper shell 221, the impeller 222 and the motor assembly may be retained. The mounting shell of the air duct 21 functions as the lower shell of the fan 22. With the structure of assembling the fan 22 and the air duct 21, the installation space of the fan 22 can be increased, and the power of the fan 22 that can be installed can be improved.

[0149] In this embodiment, the fan 22 is installed above the top wall 12 of the inner tank 1. For the fan 22, only the upper shell 221, the impeller 222 and the motor assembly may be retained, and the original lower shell of the fan 22 is omitted, reducing the overall size of the fan 22. A larger model of the fan 22 can be installed in the same space. Moreover, the air duct 21 replaces the lower shell of the fan 22, and the impeller 222 is directly installed in the air duct 21, increasing the air inlet area of the air inlet 211 and the air intake volume.

[0150] In some embodiments, a sealing device 25 is provided between the fan 22 and the air duct 21. The sealing device 25 can be an O-ring, a tape or a filling rubber, etc., to seal the gaps between the inner tank 1, the fan 22 and the air duct 21 of the cleaning device.

[0151] Meanwhile, the entire impeller 222 and the motor assembly are wrapped between the air duct 21 and the upper shell 221 of the fan 22, and a sealing method is adopted in the middle. During the operation of the entire cleaning device, the inner tank 1, the fan 22 and the air duct 21 of the cleaning device belong to a closed space, which can reduce the amount of water vapor leaking out through the installation gap between the fan 22 and the air duct 21 at each stage and reduce potential hazards.

[0152] In some embodiments, sealing devices 25 and nuts are provided at both the air inlet 211 and the air outlet 212 of the air duct 21. The nuts are tightened in a snap-fastener form to compress the sealing devices 25. The sealing devices 25 are located between the air duct 21 and the inner tank 1, reducing the leakage of water in the cleaning chamber 11 from the gap between the air duct 21 and the inner tank 1, reducing the risk of water leakage and improving the reliability of the cleaning device.

[0153] In some embodiments, when the exhaust component 4 and the fan 22 are operating, the exhaust volume of the exhaust component 4 is not less than the air supply volume of the air supply inlet 2131.

[0154] In this embodiment, when the exhaust component 4 and the fan 22 are operating, the exhaust volume of the exhaust component 4 is not less than the amount of gas entering the cleaning chamber 11 from the outside.

[0155] It should be noted that in actual use, it is impossible to achieve complete sealing of the cleaning chamber 11. There is still a small amount of gas exchange between the cleaning chamber 11 and the outside. When the exhaust volume of the exhaust component 4 is not less than the amount of gas entering the cleaning chamber 11 from the outside, the cleaning chamber 11 is in an atmospheric pressure or negative pressure environment. The negative pressure environment is helpful for improving the drying rate.

[0156] In this embodiment, when the fan 22 and the exhaust component 4 work simultaneously, the fan 22 can circulate the air in the cleaning chamber 11, and the exhaust component 4 extracts and discharges the air in the cleaning chamber 11. At this time, the fan 22 mainly introduces outside air, and a small amount of air in the chamber is inhaled for circulation. At this time, both internal and external circulation are carried out simultaneously, which can improve the speed of moisture discharge in the cleaning chamber 11, meet the requirement of rapid moisture discharge, and further improve the effect of uniform drying of the whole chamber.

[0157] In some embodiments, such as Figure 12 and Figure 13 the cleaning device further includes: a side plate 3. The heater 23 is installed in the area of the air duct 21 on the side of the inner tank 1. The side plate 3 is installed on the side wall 13 of the inner tank 1, and the side plate 3 covers at least part of the outside of the air duct 21.

[0158] In this embodiment, the side plate 3 is installed outside the side wall 13 of the inner tank 1. The inner side surface of the side plate 3 is spaced apart from the air duct 21, and the inner side surface of the side plate 3 is spaced apart from the heater 23.

[0159] Among them, the heater 23 and at least part of the air duct 21 are located between the side plate 3 and the inner tank 1. The side plate 3 can protect the heater 23 and at least part of the air duct 21. At the same time, it can reduce the risk of people touching the strong electrical components and high-temperature heating components, and improve safety.

[0160] In some embodiments, such as Figure 13 shown, the inner side surface of the side plate 3 is spaced apart from the air duct 21, and the spacing is c. The spacing c satisfies: c≥2mm.

[0161] Among them, the spacing c between the inner side surface of the side plate 3 and the air duct 21 can be 2mm, 4mm, 7mm or a wider distance.

[0162] In other words, the side plate 3 is installed outside the side wall 13 of the inner tank 1, and the inner side surface of the side plate 3 is spaced apart from the air duct 21 and the heater 23.

[0163] It can be understood that the heater 23 is installed in the area of the air duct 21 on the side wall 13 of the inner tank 1. In some embodiments, components such as a thermostat are also installed in the air duct 21. The heating tube generates a large amount of heat, and both the heating tube and the thermostat contain strong electrical terminals, and the strong electrical terminals are directly connected to the strong electricity.

[0164] While ensuring grounding, by installing the side plate 3 and setting the distance between the inner side surface of the side plate 3 and the air duct 21, on the one hand, it can avoid the side plate 3 directly touching the high-voltage and high-temperature heating components, improving the safety of the cleaning device; on the other hand, it can control the wall temperature on the outer side of the side plate 3 within a safe range, reducing the risk of scalding when people touch the side wall 13. In the embedded installation of the cleaning device, it can reduce the high-temperature damage of the inner wall of the installation cabinet by the side plate 3.

[0165] In some embodiments, the power of the heater 23 is P, satisfying: P ≤ 500W.

[0166] Among them, the power P of the heater 23 can be 150W, 200W, 350W, 400W or 500W, and can be specifically limited according to the usage situation.

[0167] In the related art, for the cleaning device with the external circulation hot air drying mode, due to the limited installation position, the size of the fan 22 and the power of the heater 23 are small, and the hot air drying can only be used as an auxiliary energy source, while the high-temperature rinsing is the main energy source. Therefore, the tableware washed by hand requires a relatively long time for single drying operation, which is not convenient.

[0168] This application uses the internal circulation hot air drying mode, increases the power of the heater 23, sets the power of the heater 23 as P, can use the hot air drying as the main energy source, and converts the high-temperature rinsing into an auxiliary energy source, significantly shortening the drying time of the tableware and improving the convenience.

[0169] In some embodiments, such as Figure 3 、 Figure 10 and Figure 11 The cleaning device further includes a water baffle 24, and the water baffle 24 is installed at the air inlet 211. The water baffle 24 can be connected to the air inlet 211 by connection methods such as threaded connection, plug-in connection, pivot connection or snap connection.

[0170] The water baffle 24 has the functions of ventilation and water blocking. The water baffle 24 can be arranged between the fan 22 and the cleaning chamber 11, and the water baffle 24 is located inside the cleaning chamber 11. When the fan 22 is turned on, the fan 22 can draw the gas in the cleaning chamber 11 into the installation position of the fan 22 through the water baffle 24. At the same time, the water baffle 24 can reduce the direct impact and sputtering of the water flow on the fan 22 and the heater 23 in the air duct 21, playing a protective role.

[0171] In some embodiments, as Figure 3 shown, the air outlet 212 is provided with a grille 2156.

[0172] Among them, the grille 2156 is used for guiding the airflow. The grille 2156 can introduce the airflow from the air outlet 212 in different directions. The guiding direction of the grille 2156 can be determined according to the installation position of the exhaust component 4 and the installation position of the air inlet 211 of the air duct 21.

[0173] For example, if the air inlet 211 of the air duct 21 is arranged on the top wall 12 of the cleaning chamber 11, the grille 2156 can appropriately guide the hot air downward in the cleaning chamber 11, so as to extend the flow path of the hot air in the cleaning chamber 11, increase the area of the gas heated by the heater 23 flowing through the entire cleaning chamber 11, and improve the full-chamber drying and dead-angle drying effects of the cleaning chamber 11.

[0174] For example, as Figure 6 shown, if the air inlet 41 of the exhaust component 4 is located in the upper left part of the cleaning chamber 11, the grille 2156 can appropriately guide the hot air downward to the rear side of the cleaning chamber 11, so as to extend the flow path of the hot air in the cleaning chamber 11, increase the area of the gas heated by the heater 23 flowing through the entire cleaning chamber 11, improve the full-chamber drying and dead-angle drying effects of the cleaning chamber 11, and reduce the amount of hot air discharged by the exhaust component 4 without being utilized, thereby increasing the utilization efficiency of the hot air heat energy.

[0175] Among them, the grille 2156 can also reduce the direct impact of water flow on the air duct 21 and play a protective role for the air duct 21.

[0176] As Figure 14 and Figure 15 shown, the cleaning device of the embodiment of the present application further includes an air duct structure, and the air duct structure includes: an upper air duct 214, a flexible connector 217, and a lower air duct 215.

[0177] The upper air duct 214 is provided with an air inlet 211 of the air duct structure; one end of the flexible connector 217 is connected to the lower port of the upper air duct 214; the upper port of the lower air duct 215 is connected to the other end of the flexible connector 217, and the lower air duct 215 is provided with an air outlet 212 of the air duct structure; among them, the air inlet 211 and the air outlet 212 are not coplanar.

[0178] Among them, the gas enters the air duct structure from the air inlet 211 of the air duct structure, flows through the upper air duct 214, the flexible connector 217, and the lower air duct 215 in sequence, and finally flows out from the air outlet 212 of the air duct structure. The air inlet 211 of the air duct structure is communicated with the air inlet 41 of the fan 22.

[0179] Among them, both ends of the flexible connector 217 are respectively connected to the lower port of the upper air duct 214 and the upper port of the lower air duct 215. The flexible connector 217 can be connected to the lower port of the upper air duct 214 and the upper port of the lower air duct 215 through detachable connection methods such as plug-in connection, clamp connection or fixture connection.

[0180] The flexible connector 217 can be a connection structure with deformable performance, such as a flexible joint composed of one or more materials among metal, plastic and rubber.

[0181] By setting the detachable connection method between the flexible connector 217 and the lower port of the upper air duct 214 and the upper port of the lower air duct 215, it is convenient to replace combinations of upper air ducts 214 and lower air ducts 215 of different types and sizes, and the included angle relationship between the upper air duct 214 and the lower air duct 215 can be changed by bending the flexible connector 217, so that the air duct structure can be installed in the inner tank 1 of cleaning devices of various heights.

[0182] In the related art, in order to extend the circulation path of hot air during hot air drying in the cleaning chamber 11, make full use of the heat energy of the hot air, and improve the drying effect of the entire chamber and dead corners in the cleaning chamber 11, usually the installation plane of the fan 22 and the inner circulation outlet of the cleaning chamber 11 are arranged on different surfaces of the cleaning chamber 11. However, the applicant has found through research that when the installation plane of the fan 22 and the inner circulation outlet of the cleaning chamber 11 are on different surfaces, when the cleaning chamber 11 is assembled with the air duct structure, tolerance and sealing problems will occur, and the assembly difficulty and the later use effect are poor.

[0183] The air duct structure of the embodiment of the present application, by setting the split structure of the upper air duct 214 and the lower air duct 215, with the flexible connector 217 between the upper air duct 214 and the lower air duct 215, and the air inlet 211 and the air outlet 212 of the air duct structure not being coplanar, can be adapted to cleaning devices in which the installation plane of the fan 22 and the inner circulation outlet of the cleaning chamber 11 are on different surfaces. And when assembling with this cleaning device, the tolerance generated during the production of the inner tank 1 can be compensated by replacing upper air ducts 214 and lower air ducts 215 of different lengths and sizes, reducing the assembly difficulty. At the same time, it can be adapted to cleaning devices of different heights, improving the reliability of use and the usage scenarios.

[0184] In some embodiments, as Figure 16 shown, the upper air duct 214 includes a horizontal section 2141 and a lower connection section 2142 connected to the horizontal section 2141 and extending downward. The lower surface of the horizontal section 2141 is provided with an air inlet 211, and the flexible connector 217 is connected to the lower connection section 2142.

[0185] Among them, the horizontal section 2141 and the lower connecting section 2142 are located on different surfaces of the cleaning chamber 11 respectively. By providing the downwardly extending lower connecting section 2142, the upper air duct 214 can be distributed on different surfaces, so as to adapt to the cleaning device in which the installation plane of the fan 22 and the inner circulation outlet of the cleaning chamber 11 are located on different surfaces.

[0186] In some embodiments, as Figure 16 shown, the upper surface of the upper air duct 214 has an opening for installing the fan 22; the flexible connecting member 217 includes a connected cover plate 2171 and a sleeve 2172. The two ends of the sleeve 2172 are respectively sleeved with the lower port of the upper air duct 214 and the upper port of the lower air duct 215, and the cover plate 2171 covers the outside of the upper air duct 214 and closes the opening.

[0187] In this embodiment, the lower surface of the upper air duct 214 and the cover plate 2171 form a receiving cavity for installing the fan 22, and the cover plate 2171 can be connected to the opening of the upper air duct 214 by connection methods such as plug-in connection, snap connection or bolt connection.

[0188] Among them, the sleeve 2172 can be a connecting pipe made of rubber or plastic, and the two ends of the sleeve 2172 are respectively sleeved with the lower port of the upper air duct 214 and the upper port of the lower air duct 215.

[0189] In some embodiments, the two ends of the sleeve 2172 are respectively sleeved with the connecting section and the upper port of the lower air duct 215, and at least a part of the cover plate 2171 is connected to the horizontal section 2141 and closes the opening.

[0190] Among them, the cover plate 2171 and the sleeve 2172 have at least the following two structural forms:

[0191] Firstly, the cover plate 2171 is completely located on the side of the fan 22 in the cleaning chamber 11. The cover plate 2171 can be completely connected to the horizontal section 2141 of the upper air duct 214, and at least a part of the sleeve 2172 extends into the side of the fan 22 in the cleaning chamber 11 and is connected to the cover plate 2171.

[0192] At least a part of the sleeve 2172 is a flexible structure, so that one end of the sleeve 2172 can be bent and deformed toward the side of the cleaning chamber 11 where the upper port of the lower air duct 215 is located, and the other end is bent and deformed toward the other side of the cleaning chamber 11 where the lower port of the upper air duct 214 is located, so as to facilitate the sleeve 2172 to be sleeved with the lower port of the upper air duct 214 and the upper port of the lower air duct 215.

[0193] Secondly, a part of the cover plate 2171 covers the upper surface of the upper air duct 214, and a part covers the bent part of the upper air duct 214 extending to the side.

[0194] In this embodiment, a part of the cover plate 2171 is located on the side of the fan 22 facing the cleaning chamber 11, and another part of the cover plate 2171 covers the bent part where the upper air duct 214 extends laterally.

[0195] In this embodiment, at least a part of the cover plate 2171 is a flexible structure, so that after the two ends of the sleeve 2172 are respectively sleeved with the lower port of the upper air duct 214 and the upper port of the lower air duct 215 on a certain side of the cleaning chamber 11, the cover plate 2171 can be bent and deformed toward the other side where the fan 22 is located, so as to cover the outside of the upper air duct 214 and seal the open end.

[0196] In some embodiments, the two ends of the sleeve 2172 are respectively in interference fit with the lower port of the upper air duct 214 and the upper port of the lower air duct 215, so as to improve the sealing performance of the connection between the two ends of the sleeve 2172 and the lower port of the upper air duct 214 and the upper port of the lower air duct 215.

[0197] In some embodiments, as Figure 16 and Figure 17 shown, the side wall 13 of the upper air duct 214 is provided with a first connection structure 2143, and the cover plate 2171 is provided with a second connection structure 21711, and the first connection structure 2143 is connected to the second connection structure 21711.

[0198] Among them, the side wall 13 of the upper air duct 214 is assembled with the cover plate 2171, and the side wall 13 of the upper air duct 214 can be connected to the cover plate 2171 by connection methods such as bolt connection, snap connection or plug-in connection.

[0199] In the case where the side wall 13 of the upper air duct 214 is connected to the cover plate 2171 by plug-in connection, one of the first connection structure 21� and the second connection structure 21711 is a plug, and the other of the first connection structure 2143 and the second connection structure 21711 is a socket, and the plug is inserted into the socket to connect the side wall 13 of the upper air duct 214 and the cover plate 2171 together.

[0200] In the case where the side wall 13 of the upper air duct 214 is connected to the cover plate 2171 by snap connection, one of the first connection structure 2143 and the second connection structure 21711 is a fixed snap, and the other of the first connection structure 2143 and the second connection structure 21711 is a connecting member 2422, and the connecting member 2422 is inserted into the fixed snap to lock the side wall 13 of the upper air duct 214 and the cover plate 2? together.

[0201] In some embodiments, the first connection structure 2143 cooperates with the second connection structure 21711. A plurality of first connection structures 2143 may be provided, and the number of the second connection structures 21711 is adapted to the number of the first connection structures 2143 to increase the connection stability between the side wall 13 of the upper air duct 214 and the cover plate 2171.

[0202] In some embodiments, the upper cover plate 2171 is made of rubber. The upper half of the upper cover plate 2171 can be bent and covered on the upper surface of the air duct 21, reducing problems such as vibration of the motor assembly of the fan 22, vibration between the fan 22 and the top outer plate, and aerodynamics generated by the fan 22, and effectively reducing the noise index during the operation of the cleaning device.

[0203] In some embodiments, as Figure 15 shown, the lower air duct 215 includes: a main body portion 2158 and a cover body 2157; the upper end of the main body portion 2158 is connected to the flexible connector 217, at least part of the outer side surface of the main body portion 2158 is open, and an air outlet 212 is provided; the cover body 2157 is connected to the main body portion 2158 and closes the open part of the outer side surface of the main housing, and the cover body 2157 is made of a flexible material.

[0204] In this embodiment, the main body portion 2158 can be made of a light material, such as hard plastic or metal; the cover body 2157 is made of a flexible material, such as rubber or plastic.

[0205] Wherein, the main body portion 2158 and the cover body 2157 can be connected by connection methods such as plug-in connection, clamp connection or fixture connection, etc., so as to facilitate disassembly and replacement.

[0206] By providing the lower air duct 215 with a main body portion 2158 made of a hard material and a cover body 2157 made of a flexible material, a better sealing effect can be produced, and the overall lower air duct 215 can reduce the risk of air leakage and water leakage, and improve the reliability of the air duct structure.

[0207] In some embodiments, a sealing strip can be provided between the main body portion 2158 and the cover body 2157 to further improve the sealing performance between the main body portion 2158 and the cover body 2157 and improve the reliability of the air duct structure.

[0208] In some embodiments, as Figure 19 shown, the main body portion 2158 includes: an upper connection section 21581 and an air duct housing 21582.

[0209] The lower end of the flexible connector 217 is sleeved on the upper connection section 21581; the air duct housing 21582 is connected to the upper connection section 21581, the outer side surface of the air duct housing 21582 is open, and an air outlet 212 is provided, and the cover body 2157 covers the air duct housing 21582.

[0210] Among them, the lower end of the flexible connecting member 217 and the upper connecting section 21581 can be in interference fit to improve the sealing performance of the connection between the lower end of the flexible connecting member 217 and the upper connecting section 21581.

[0211] In some embodiments, such as Figure 15 and Figure 18 shown, a third connecting structure 21583 is provided on the outer peripheral wall of the upper connecting section 21581, an avoidance hole 2173 is provided at the lower end of the flexible connecting member 217, and a fourth connecting structure 21571 is provided on the cover body 2157. The third connecting structure 21583 passes through the avoidance hole 2173 and is connected to the fourth connecting structure 21571.

[0212] Among them, the third connecting structure 21583 and the fourth connecting structure 21571 can be connected by snap connection, threaded connection or plug-in connection.

[0213] The third connecting structure 21583 passing through the avoidance hole 2173 can fix the connection between the flexible connecting member 217 and the upper connecting section 21581. The third connecting structure 21583 passing through the avoidance hole 2173 and connected to the fourth connecting structure 21571 can fix the connection among the upper connecting section 21581, the cover body 2157 and the flexible connecting member 217.

[0214] In the case where the third connecting structure 21583 and the fourth connecting structure 21571 are connected by snap connection, the third connecting structure 21583 can be a fixed snap, and the fourth connecting structure 21571 can be a sliding snap. When the lower end of the flexible connecting member 217 is sleeved on the upper connecting section 21581, the third connecting structure 21583 passes through the avoidance hole 2173, and at least part of the third connecting structure 21583 can extend out of the avoidance hole 2173 to fix the connection between the flexible connecting member 217 and the upper connecting section 21581. The fourth connecting structure 21571 slides into the third connecting structure 21583 to fix the connection among the upper connecting section 21581, the cover body 2157 and the flexible connecting member 217.

[0215] In the case where the third connecting structure 21583 and the fourth connecting structure 21571 are connected by threaded connection, the third connecting structure 21583 can be a convex block with a threaded hole, and the fourth connecting structure 21571 can be a structure with a connecting member 2422 such as a bolt, a stud or a screw. When the lower end of the flexible connecting member 217 is sleeved on the upper connecting section 21581, the third connecting structure 21583 passes through the avoidance hole 2173, the threaded hole of the third connecting structure 21583 can extend out of the avoidance hole 2173, and the fourth connecting structure 21571 is threadedly connected to the third connecting structure 21583.

[0216] In some embodiments, such as Figure 19As shown, the air duct housing 21582 is provided with a heater installation position 21585 for installing the heater 23 and a thermostat installation position 21586 for installing the thermostat 29.

[0217] Among them, the heater installation position 21585 is used to install the heater 23, and the heater 23 can be installed on the heater 23 through connection methods such as plug-and-play connection, threaded connection, or snap connection. The heater 23 is configured to heat the gas flowing through the lower air duct 215 when it is turned on.

[0218] The thermostat installation position 21586 is used to install the thermostat 29, and the thermostat 29 can be installed on the thermostat installation position 21586 through connection methods such as plug-and-play connection, threaded connection, or snap connection. The thermostat 29 is used to detect the temperature in the lower air duct 215 and control the overall working state of the cleaning device according to the detected temperature result.

[0219] Among them, both the heater installation position 21585 and the thermostat installation position 21586 are located inside the air duct housing 21582, that is, the heater 23 and the thermostat 29 are installed in the same space.

[0220] In some embodiments, as Figure 19 shown, along the gas flow direction, the heater installation position 21585 and the thermostat installation position 21586 are installed in sequence, so that the air flow is heated by the heater 23 and then the temperature is measured by the thermostat 29.

[0221] By installing both the thermostat 29 and the heater 23 inside the air duct housing 21582, the thermostat 29 can monitor the temperature inside the air duct housing 21582 in real time. In the case of sudden stall or damage of the fan 22, the thermostat 29 can detect the temperature anomaly in time and control the cleaning device to stop working, which can effectively reduce risks and improve the safety of the cleaning device.

[0222] In some embodiments, as Figure 15 shown, a heat sink plate 21584 is installed inside the air duct housing 21582, and the heat sink plate 21584 can be connected to the air duct housing 21582 through threaded connection, plug-and-play connection, or snap connection. The heat sink plate 21584 can be components such as a quartz heating plate, a ceramic heating plate, and a metal heating element.

[0223] Among them, the heat sink plate 21584 is arranged inside the air duct housing 21582 and on the side of the heater installation position 21585 away from the inner container 1, and the heat sink plate 21584 is in direct contact with the inside of the air duct housing 21582. Due to the good thermal conductivity of the heat sink plate 21584, the local high temperature near the heater 23 can be quickly diffused to the surrounding areas, which can reduce the occurrence of local high temperature inside the air duct housing 21582, and at the same time can also reduce the damage to the human body or the cabinet after embedded installation caused by the too high temperature outside the air duct housing 21582.

[0224] In some embodiments, such as Figure 20 shown, the lower air duct 215 is provided with a heater installation position 21585, and an expansion section 2154 is provided between the inlet end of the lower air duct 215 and the heater installation position 21585. The flow area of the expansion section 2154 gradually increases from one end close to the inlet end of the lower air duct 215 to one end close to the heater installation position 21585.

[0225] Among them, the lower air duct 215 includes a heater installation position 21585 and the inlet end of the lower air duct 215. The flow area of the inlet end of the lower air duct 215 is smaller than the flow area of the heater installation position 21585. The heater installation position 21585 is arranged at the rear side of the inlet end of the lower air duct 215, and the air flow flows from the inlet end of the lower air duct 215 to the heater installation position 21585.

[0226] Among them, the heater installation position 21585 is used to install the heater 23, and the heater 23 is configured to heat the gas flowing through the lower air duct 215 when it is turned on. The fan 22 can be installed at the inlet end of the lower air duct 215 or at a position close to the inlet end of the lower air duct 215 to suck the gas from the inlet end of the lower air duct 215 into the lower air duct 215 and drive the gas to flow along the lower air duct 215 to the heater installation position 21585.

[0227] In this embodiment, the expansion section 2154 can be an axially symmetric shape, or a shape with one side inclined and the other side vertical, or a shape with both sides inclined but different inclination angles, which can be specifically set according to the actual use scenario.

[0228] According to the lower air duct 215 provided by the embodiment of the present application, by providing an expansion section 2154 between the inlet end of the lower air duct 215 and the heater installation position 21585, and the flow area of the expansion section 2154 gradually increases from one end close to the inlet end of the lower air duct 215 to one end close to the heater installation position 21585. On the one hand, the speed of the air flow entering from the inlet end of the lower air duct 215 can be reduced, the contact time between the gas and the heater 23 can be extended, and the heating effect can be increased; on the other hand, the air volume can be blown more evenly onto the surface of the heater 23, reducing the local high temperature phenomenon, and improving the safety and reliability of the use of the lower air duct 215.

[0229] In some embodiments, such as Figure 20 shown, the front side wall 13 of the expansion section 2154 is inclined forward from one end close to the inlet end of the lower air duct 215 to one end close to the heater installation position 21585.

[0230] Among them, the front side wall 13 of the expansion section 2154 has an angle with the vertical direction, so that the flow area at the inlet end of the lower air duct 215 is smaller than the flow area of the lower heater installation position 21585. After the air flow flows out from the outlet of the fan 22, through the expansion of the flow area, the wind speed can be decreased and the pressure can be increased, so that the air volume can be blown onto the heater 23 more uniformly, reducing the local high temperature from restricting the power of the heater 23, and playing a role in pressure boosting and flow stabilizing.

[0231] In some embodiments, as Figure 20 shown, the inclination angle γ of the front side wall 13 of the expansion section 2154 with the vertical direction satisfies: 10° ≤ γ ≤ 45°.

[0232] Among them, the inclination angle γ of the front side wall 13 of the expansion section 2154 with the vertical direction can be 10°, 20°, 30° or 45°, and can be specifically set according to the actual use scenario.

[0233] By setting the inclination angle range of the front side wall 13 of the expansion section 2154 with the vertical direction, the air volume can be better evenly distributed, which helps the air volume to evenly pass over the cross-section of the lower heater 23, reducing the local overheating from restricting the power of the heater 23.

[0234] In some embodiments, a thermostat installation position 21586 for installing a thermostat 29 is provided in the lower air duct 215.

[0235] The thermostat installation position 21586 is used to install the thermostat 29. The thermostat 29 can be installed on the thermostat installation position 21586 by connection methods such as plug-in connection, threaded connection or snap connection. The thermostat 29 is used to detect the temperature in the lower air duct 215 and control the overall working state of the cleaning device according to the detected temperature result.

[0236] By installing both the thermostat 29 and the heater 23 in the lower air duct 215, the thermostat 29 can monitor the temperature in the lower air duct 215 in real time. In the case where the fan 22 suddenly stalls or breaks down, the thermostat 29 can detect the abnormal temperature in time and thus control the cleaning device to stop working, which can effectively reduce risks and improve the safety of the cleaning device.

[0237] Among them, the position of the thermostat installation position 21586 in the lower air duct 215 has at least the following two structures:

[0238] First, the expansion section 2154 is provided with a thermostat installation position 215�6 for installing the thermostat 29.

[0239] Among them, the thermostat installation position 21586 can be set on any side wall 13 of the expansion section 2154. For example, it can be set on the front side wall 13 or the rear side wall 13 of the expansion section 2154.

[0240] In this embodiment, by arranging the thermostat installation position 21586 between the inlet end of the lower air duct 215 and the heater installation position 21585, the thermostat 29 can detect the temperature of the gas that has not been heated by the heater 23, and timely control the cleaning device to stop working in case of abnormal temperature, further reducing risks and improving the safety of the cleaning device.

[0241] In some embodiments, the front side wall 13 of the expansion section 2154 is provided with a thermostat installation position 21586 for installing the thermostat 29.

[0242] In this embodiment, if the fan 22 suddenly stalls or breaks down, the hot air of the heater 23 floats up and quickly reaches the inclined position of the front side wall 13 of the expansion section 2154, where the temperature reaches the maximum at this time. This thermostat installation position 21586 can effectively reduce safety problems.

[0243] Secondly, as Figure 21 shown, the lower air duct 215 is provided with a thermostat installation position 21586 for installing the thermostat 29, and the thermostat installation position 21586 and the heater installation position 21585 are arranged side by side in the horizontal direction.

[0244] In this embodiment, the thermostat installation position 21586 and the heater installation position 21585 are arranged side by side in the horizontal direction, and the thermostat 29 can directly detect the temperature of the heater 23, and timely control the cleaning device to stop working in case of abnormal temperature of the heater 23, further reducing risks and improving the safety of the cleaning device.

[0245] In some embodiments, as Figure 21 shown, the lower air duct 215 further includes: a partition plate 2155; the partition plate 2155 is installed on the inner side surface of the thermostat installation position 21586 to isolate the thermostat 29 from the air flow channel of the lower air duct 215, and the partition plate 2155 is made of a thermally conductive insulating material.

[0246] Among them, the partition plate 2155 can be made of a thermally conductive insulating material such as ceramic, graphene, mica or silica gel. The partition plate 2155 can be connected to the inner side surface of the thermostat installation position 21586 by plug-in connection, threaded connection or snap connection.

[0247] In this embodiment, by providing the partition plate 2155 made of a thermally conductive insulating material, on the one hand, the thermostat 29 that needs to be connected to high voltage can be isolated from the air flow channel of the lower air duct 215, so as to avoid the thermostat 29 contacting the conductive water vapor in the lower air duct 215, strengthen the insulation protection and reduce potential safety hazards; on the other hand, the partition plate 2155 also has a heat conduction function, and can reflect the temperature at the heater 23 to the thermostat 29 in real time, so as to cut off the entire system when the thermostat 29 detects abnormal temperature, and improve the safety of the cleaning device.

[0248] It can be understood that since the lower air duct 215 and the cleaning chamber 11 belong to the same enclosed space, and the space is filled with a large amount of conductive water vapor, while the thermostat 29 needs to be connected to strong electricity, there is a safety hazard if the thermostat 29 is in direct contact with the water vapor.

[0249] As Figure 22 and Figure 23 As shown, the cleaning device of the embodiment of the present application further includes an air duct 21, and the air duct 21 includes: a fan installation position 2146, a first air guiding section 2147, and a second air guiding section 2149 that are connected in sequence. The fan installation position 2146 and the first air guiding section 2147 are distributed in the same direction, and the first air guiding section 2147 and the second air guiding section 2149 are bent relative to each other; wherein, the first air guiding section 2147 is provided with a volute tongue 2148, and the flow area at the volute tongue 2148 gradually increases from one end close to the fan installation position 2146 to one end close to the second air guiding section 2149.

[0250] Wherein, the fan installation position 2146 is used to install the fan 22, and the fan installation position 2146 and the first air guiding section 2147 are located on the same surface of the cleaning chamber 11. For example, both the fan installation position 2146 and the first air guiding section 2147 can be located on the top surface of the cleaning chamber 11, or both can be located on the side surface of the cleaning chamber 11.

[0251] The first air guiding section 2147 and the second air guiding section 2149 are bent relative to each other. The first air guiding section 2147 and the second air guiding section 2149 are located on adjacent surfaces of the cleaning chamber 11. For example, the first air guiding section 2147 is located on the top surface of the cleaning chamber 11, and the second air guiding section 2149 is located on the side surface of the cleaning chamber 11; or, the first air guiding section 2147 is located on the side surface of the cleaning chamber 11, and the second air guiding section 2149 is located on the bottom surface of the cleaning chamber 11.

[0252] Wherein, the angle at which the first air guiding section 2147 and the second air guiding section 2149 are bent relative to each other can be 90°, 180° or other angles, and can be specifically set according to the installation environment of the air duct 21.

[0253] Wherein, the volute tongue 2148 is located on the side of the first air guiding section 2147 close to the fan installation position 2146, and the volute tongue 2148 is used to reduce the amount of gas circulating in the fan installation position 2146. When the impeller 222 of the fan 22 rotates, when the airflow entering the air inlet 211 passes by the vicinity of the volute tongue 2148, the tongue of the volute tongue 2148 divides them into two parts: most of the airflow flows into the first air guiding section 2147 along the fan installation position 2146; a small part of the airflow flows back to the fan installation position 2146 through the gap between the volute tongue 2148 and the impeller 222, rotates with the impeller 222 in the fan installation position 2146 for one week, and then returns to the volute tongue 2148 to participate in a new flow division.

[0254] It should be noted that the gas in the cleaning chamber 11 is sucked into the first air guiding section 2147 by the fan 22 and then immediately enters the second air guiding section 2149. When the gas in the cleaning chamber 11 passes from the first air guiding section 2147 to the second air guiding section 2149, its direction deflects, and the deflection angle is the same as the relative bending angle between the first air guiding section 2147 and the second air guiding section 2149. The deflection of the gas generates resistance to the gas flow, and it is prone to the phenomenon of backflow vortices, which affects the working state, air volume and efficiency of the overall fan 22.

[0255] The air duct 21 provided in the embodiment of the present application is provided with a volute tongue 2148 in the first air guiding section 2147, and the flow area at the volute tongue 2148 gradually increases from one end close to the fan installation position 2146 to one end close to the second air guiding section 2149, which can reduce the influence of the backflow vortices generated by the deflection of the air flow direction when passing from the first air guiding section 2147 to the second air guiding section 2149. Moreover, due to the expansion design of the first air guiding section 2147, the wind speed uniformity at the outlet of the fan 22 and the maximum static pressure of the fan 22 can be significantly improved, the overall air volume in the air duct 21 is increased, and the wind speed of the air flow reaching the surface of the heater 23 can be made uniform, thereby improving the hot air drying effect of the cleaning device.

[0256] In some embodiments, the fan installation position 2146 and the first air guiding section 2147 are distributed in the horizontal direction, and the second air guiding section 2149 is distributed in the vertical direction.

[0257] Among them, the relative bending angle between the first air guiding section 2147 and the second air guiding section 2149 is 90°, so as to adapt to the cleaning device in which the installation plane of the fan 22 and the inner circulation outlet of the cleaning chamber 11 are on different planes.

[0258] In some embodiments, the volute tongue 2148 includes an arc section 21481 and a straight section 21482. The arc section 21481 protrudes towards the middle of the first air guiding section 2147. The first end of the straight section 21482 is connected to the arc section 21481, and the first end is connected to the wall surface of the first air guiding section 2147.

[0259] Among them, the arc section 21481 is mainly used to guide the flow direction of the gas, so that the gas can better enter the area of the straight section 21482, while reducing the turbulence and eddy current of the air flow. The straight section 21482 is mainly used to smoothly introduce the air flow of the arc section 21481 into the second air guiding section 2149.

[0260] In some embodiments, as Figure 23 shown, the included angle between the straight section 21482 and the central axis of the first air guiding section 2147 is θ, satisfying: 5° ≤ θ ≤ 60°.

[0261] Among them, the included angle θ between the straight line segment 21482 and the central axis of the first air guiding section 2147 can be 5°, 25°, 45° or 60°, and can be specifically set according to the actual working environment.

[0262] In some embodiments, the straight line segment 21482 is tangent to the arc segment 21481, so as to smoothly introduce the air flow of the arc segment 21481 into the straight line segment 21482.

[0263] In some embodiments, as Figure 23 shown, the radian of the arc segment 21481 is δ, satisfying: 30° ≤ δ ≤ 90°.

[0264] Among them, the radian δ of the arc segment 21481 can be 30°, 45°, 60° or 90°, and can be specifically set according to the actual working environment.

[0265] By setting the radian δ of the arc segment 21481, the gas can enter the area of the straight line segment 21482 better, and at the same time, the turbulence and eddy current of the air flow are reduced.

[0266] In some embodiments, as Figure 23 shown, the vertical distance d4 from the center of the fan installation position 2146 to the straight line segment 21482 and the radius r of the fan installation position 2146 satisfy: d4 ≤ 3r.

[0267] Among them, the vertical distance d4 from the center of the fan installation position 2146 to the straight line segment 21482 can be negative, that is, the extension line of the straight line segment 21482 intersects with the fan installation position 2146; or, the extension line of the straight line segment 21482 is tangent to the fan installation position 2146, that is, the vertical distance d4 from the center of the fan installation position 2146 to the straight line segment 21482 is 0; or, the vertical distance d4 from the center of the fan installation position 2146 to the straight line segment 21482 can be r, 1.5r or 3r, and can be specifically set according to the actual working environment.

[0268] In this embodiment, by setting the vertical distance from the center of the fan installation position 2146 to the straight line segment 21482, the gas can enter the area of the straight line segment 21482 better, and at the same time, the turbulence and eddy current of the air flow are reduced.

[0269] In some embodiments, the volute tongue 2148 is spaced apart from the second air guiding section 2149 to improve the flow characteristics of the gas, improve the efficiency of flow splitting, and reduce the turbulence and eddy current of the air flow. The spacing distance between the volute tongue 2148 and the second air guiding section 2149 needs to be calculated and adjusted according to actual needs.

[0270] In some embodiments, as Figure 23 shown, the air duct 21 is open at the fan installation position 2146 to form the lower volute of the fan 22.

[0271] In this embodiment, the fan installation position 2146 is open to facilitate the installation of the impeller 222 of the fan 22.

[0272] The fan 22 can retain only the upper shell 221, the impeller 222 and the motor assembly of the fan 22, and omit the original lower shell of the fan 22. In this way, the fan installation position 2146 and the upper shell 221 of the fan 22 together form the fan 22 part, reducing the overall size of the fan 22. A larger model of the fan 22 can be installed in the same space. Moreover, the fan installation position 2146 replaces the lower shell of the fan 22, and the impeller 222 is directly installed in the fan installation position 2146, increasing the air inlet area of the air inlet 211 and increasing the air intake volume.

[0273] In some embodiments, as Figure 24 and Figure 25 shown, the cleaning device provided by the embodiment of the present application further includes a water blocking structure. The first wall surface of the inner tank 1 of the cleaning device is provided with an installation hole. The water blocking structure includes: an air duct 21 and a water blocking cover 24.

[0274] As Figure 25 and Figure 26 shown, the air inlet end 20 of the air duct 21 has a flange 201, and the flange 201 is adapted to extend into the inner tank 1 from the installation hole; the water blocking cover 24 includes a connected water blocking plate 241 and an installation structure 242, and the installation structure 242 is connected to the flange 201. The projection of the water blocking plate 241 on the first wall surface covers the projection of the air inlet end 20 on the first wall surface, and an air inlet 211 is formed between the water blocking cover 24 and the flange 201.

[0275] Among them, the first wall surface of the inner tank 1 of the cleaning device can be the top wall 12, the side wall 13 or the bottom wall 16 of the inner tank 1, which can be specifically set according to the installation scenario of the cleaning device. The installation hole can be a through hole, and the installation hole is used to install the air duct 21.

[0276] The air inlet end 20 of the air duct 21 has a flange 201, and the flange 201 is connected to the installation hole in a fitting manner. The flange 201 and the installation hole can be connected by connection methods such as snap connection, knob connection or screw connection.

[0277] Among them, the water blocking cover 24 has the functions of ventilation and water blocking. The water blocking cover 24 can be arranged between the fan 22 and the cleaning chamber 11, and the water blocking cover 24 is located in the cleaning chamber 11.

[0278] An air inlet 211 is formed between the water blocking cover 24 and the flange 201. The fan 22 sucks the gas in the cleaning chamber 11 into the air duct 21 through the air inlet 211. The number of the air inlets 211 can be set to one or more, and the shape of the air inlet 211 can be strip-shaped or surface-shaped, which can be specifically set according to the actual installation situation.

[0279] Among them, the mounting structure 242 and the flanging 201 can be connected by connection means such as snap fasteners, knobs or screw connections. The water baffle 241 is connected to the flanging 201 at the air inlet end 20 of the air duct 21 through the mounting structure 242. The water baffle 241 and the mounting structure 242 can be connected by connection means such as integral molding, welding or screw connection.

[0280] When the mounting structure 242 and the flanging 201 are connected by screw connection, meshing threads are provided on both the mounting structure 242 and the flanging 201, and the mounting structure 242 and the flanging 201 are connected by screw meshing.

[0281] When the mounting structure 242 and the flanging 201 are connected by a knob, the mounting structure 242 and the flanging 201 can be provided with structures that engage with each other. After the mounting structure 242 and the flanging 201 are rotated by a certain angle, the mounting structure 242 and the flanging 201 are snap-connected.

[0282] According to the water blocking structure provided by the embodiment of the present application, by providing the air duct 21 and the water blocking cover 24, and the projection of the water baffle 241 on the first wall covering the projection of the air inlet end 20 on the first wall, the situation that the water flow directly enters the air duct 21 during the cleaning process of the cleaning equipment and directly impacts the inside of the blower 22 to cause pollution of the impeller 222 can be reduced, playing a protective role, and at the same time, the air volume of the blower 22 is also increased, which is beneficial to using a higher-power heater 23 downstream of the blower 22 to accelerate the drying process. [[ID=X]] [[ID=X]]

[0283] In some embodiments, as Figure 26 shown, there are multiple mounting structures 242, and the multiple mounting structures 242 are spaced apart circumferentially around the water baffle 241, and an air inlet 211 is formed between two adjacent mounting structures 242.

[0284] Among them, the mounting structure 242 can be provided with 2, 3 or more. The multiple mounting structures 242 can be evenly distributed circumferentially around the water baffle 241, or can be arranged at different angles according to requirements. The number and distribution mode of the mounting structures 242 can be set according to the actual use scenario.

[0285] By adding multiple mounting structures 242, multi-point connection between the water blocking cover 24 and the air inlet end 20 of the air duct 21 can be achieved, improving the reliability of the connection.

[0286] In some embodiments, the flanging 201 includes multiple ones that are spaced apart circumferentially along the air inlet end 20. First, the multiple flangings 201 can be connected to the multiple mounting structures 242, and then the multiple flangings 201 and the multiple mounting structures 242 are rotated by a certain angle so that the multiple flangings 201 and the multiple mounting structures 242 are connected in one-to-one correspondence.

[0287] In this embodiment, the number and installation positions of the flanges 201 match the installation structure 242. By connecting multiple flanges 201 to multiple installation structures 242 in a one-to-one correspondence, the connection points between the water baffle 24 and the air inlet end 20 of the air duct 21 can be increased, and the connection reliability can be improved.

[0288] In some embodiments, as Figure 26 shown, multiple flanges 201 and multiple installation structures 242 are assembled or disassembled by a knob method, and the connection method is simple and convenient.

[0289] Among them, multiple flanges 201 are spaced apart circumferentially along the air inlet end 20, and multiple installation structures 242 are spaced apart circumferentially around the water baffle 241. Before connecting the water baffle 24 to the air inlet end 20 of the air duct 21, each installation structure 242 among the multiple installation structures 242 can be located between two adjacent flanges 201, and then the water baffle 24 is rotated by a certain angle relative to the air inlet end 20 of the air duct 21 so that the projection of the flange 201 on the air inlet end 20 in the axial direction of the air duct 21 has an overlapping part. At this time, the water baffle 24 is snap-connected to the air inlet end 20 of the air duct 21.

[0290] In some embodiments, the installation structure 242 includes a card slot 2421 that opens inward in the radial direction, and the flange 201 is embedded in the card slot 2421. By rotating the water baffle 24, the area of the flange 201 located in the card slot 2421 can be adjusted, facilitating assembly or disassembly.

[0291] In this embodiment, when there is one flange 201, the flange 201 extends circumferentially along the air inlet end 20, and the flange 201 has a notch. The installation structure 242 embeds the flange 201 into the card slot 2421 through the notch; when there are multiple flanges 201, the multiple flanges 201 are spaced apart circumferentially along the air inlet end 20, and the interval between two adjacent flanges 201 of the installation structure 242 embeds each flange 201 into one or more card slots 2421.

[0292] In some embodiments, as Figure 26 shown, the installation structure 242 includes: a connecting member 2422 and a clamping joint 2423; the connecting member 2422 is connected to the water baffle 241; the clamping joint 2423 is connected to the connecting member 2422, and the clamping joint 2423 is provided with a card slot 2421.

[0293] Among them, the clamping joint 2423, the connecting member 2422, and the water baffle 241 can be connected by connection methods such as integral molding, welding, or gluing.

[0294] The connecting member 2422 can be connected to the edge, the middle part, or the area between the edge and the middle part of the water baffle 241.

[0295] In some embodiments, asFigure 26 As shown, the card connector 2423 is located radially outside the water baffle 241, and the radially outer wall of the card connector 2423 is arc-shaped.

[0296] Among them, as Figure 27 shown, the card connector 2423 is located radially outside the water baffle 241, that is, there is a certain gap between the outside of the card connector 2423 and the radially outer side of the water baffle 241. When the card connector 2423 is connected to the flanging 201, an air inlet 211 is formed between the water baffle 241 and the flanging 201.

[0297] By setting the radially outer wall of the card connector 2423 to be arc-shaped, it is convenient for the radially outer wall of the card connector 2423 to match the inner wall 13 of the air inlet end 20 of the air duct 21.

[0298] In some embodiments, the connecting member 2422 has a hollow groove 24221. One or more hollow grooves 24221 can be provided, and the number and hollow area of the hollow grooves 24221 can be set according to the area of the connecting member 2422.

[0299] By providing the hollow groove 24221, the connecting member 2422 can be weight-reduced to reduce material costs.

[0300] In some embodiments, the radially inner ends of the connecting members 2422 of the plurality of mounting structures 242 are connected by an annular rib 2411 connected to the bottom surface of the water baffle 241.

[0301] Among them, the bottom surface of the water baffle 241 is provided with an annular rib 2411. The annular rib 2411 can be concentric with the water baffle 241 or eccentric with the water baffle 241. The annular rib 2411 can be connected to the bottom surface of the water baffle 241 by connection methods such as integral molding, welding or gluing. The radially inner ends of the connecting members 2422 of the plurality of mounting structures 242 can be connected to the annular rib 2411 by connection methods such as integral molding, welding or gluing.

[0302] In this embodiment, as Figure 26 shown, the radially inner ends of the connecting members 2422 of the plurality of mounting structures 242 are connected to the annular rib 2411, and the connecting members 2422 of the plurality of mounting structures 242 can be connected, improving the connection stability between the plurality of mounting structures 242 and the water baffle 241.

[0303] In some embodiments, as Figure 25 shown, the first wall surface is provided with a mounting boss 121 that surrounds the mounting hole and protrudes into the cleaning chamber 11. The water blocking structure further includes: a sealing ring, and the sealing ring is clamped between the mounting boss 121 and the air duct 21.

[0304] Wherein, an installation space is formed between the installation boss 121 and the air inlet end 20 of the air duct 21. The sealing ring is located in the installation space, and the sealing between the installation boss 121 and the air duct 21 can be achieved by extruding the sealing ring.

[0305] Wherein, the sealing ring can be made of rubber, plastic or other elastic materials, which can increase the seal between the air inlet end 20 of the air duct 21 and the inner tank 1, reduce the leakage of water vapor in the cleaning chamber 11, and improve the safety and reliability of the cleaning device.

[0306] In some embodiments, as Figure 25 shown, the distance between the end face of the installation boss 121 and the surface of the water baffle 24 is Δh4, satisfying: Δh4≥5mm.

[0307] Wherein, the distance Δh4 between the end face of the installation boss 121 and the surface of the water baffle 24 can be 5mm, 6mm, 8mm or a larger value. By setting the distance between the end face of the installation boss 121 and the surface of the water baffle 24, the air intake volume of the air duct 21 can be increased, the situation of overheating of the power wall surface of the heater 23 can be reduced, and potential safety hazards can be reduced.

[0308] In some embodiments, as Figure 28 and Figure 30 shown, the water baffle 24 includes: a main cover body 243 and a plurality of water baffle members 244 groups; the main cover body 243 has an installation structure 242 for installing on the whole machine and forms a ventilation duct 2432; the plurality of water baffle members 244 groups are arranged at intervals along the axial direction of the ventilation duct 2432, and each water baffle member 244 group includes a plurality of water baffle members 244 arranged at intervals in a direction intersecting with the axial direction of the ventilation duct 2432, and the projections of the plurality of water baffle members 244 groups along the axial direction of the ventilation duct 2432 cover the projection of the inlet end of the ventilation duct 2432 along the axial direction.

[0309] Wherein, the main cover body 243 is used to connect with the whole machine and the plurality of water baffle members 244 groups, and the main cover body 243 forms a ventilation duct 2432 to realize the circulation of air in the cleaning chamber 11.

[0310] The main cover body 243 can be connected to the whole machine by means of snap connection, threaded connection or welding, etc., and the main cover body 243 and the plurality of water baffle members 244 groups can be connected by means of integral molding, welding or gluing, etc.

[0311] The whole machine is provided with a structural member connected to the mounting structure 242. When the main cover 243 is connected to the whole machine by a snap connection, one of the mounting structure 242 and the structural member is a fixed buckle, and the other of the mounting structure 242 and the structural member is a connecting member 2422. The connecting member 2422 is inserted into the fixed buckle to lock the main cover 243 and the whole machine together; or, when the main cover 243 is connected to the whole machine by a threaded connection, the mounting structure 242 and the structural member have meshing threads, and the mounting structure 242 and the structural member are locked together by thread fitting to lock the main cover 243 and the whole machine together.

[0312] Among them, as Figure 30 shown, there are multiple groups of water baffle members 244, and the multiple groups of water baffle members 244 are arranged at intervals along the axial direction of the air vent passage 2432. The number of groups of water baffle members 244 can be 2, 3 or more layers, and the specific number can be set according to the axial length of the air vent passage 2432. The adjacent two groups of water baffle members 244 are spaced apart to realize ventilation. The arrangement of the multiple groups of water baffle members 244 can enhance the water blocking effect.

[0313] Among them, multiple water baffle members 244 are arranged at intervals along a direction intersecting with the axial direction of the air vent passage 2432. The number of water baffle members 244 can be 3, 4 or more. The number of water baffle members 244 in each group of water baffle members 244 can be the same or different, and the number of water baffle members 244 in each group of water baffle members 244 can be determined according to the cross-sectional area of the air vent passage 2432 in the plane where it is located.

[0314] As Figure 30 shown, the arrows in the figure indicate the air flow direction. The adjacent two water baffle members 244 are spaced apart to realize ventilation. The projection of the multiple groups of water baffle members 244 along the axial direction of the air vent passage 2432 covers the projection of the inlet end of the air vent passage 2432 along the axial direction, so that the air flow is sucked into the air duct 21 in a zigzag shape along the interval between the adjacent two groups of water baffle members 244 and the interval between the adjacent two water baffle members 244, effectively blocking the entry of water flow and ensuring the circulation of gas at the same time.

[0315] Among them, multiple water baffle members 244 can be arranged at intervals along a direction perpendicular to the axial direction of the cross-section of the air vent passage 2432, and the lengths of the multiple water baffle members 244 gradually change along the radial direction of the cross-section of the air vent passage 2432, so that the ends of the multiple water baffle members 244 are connected to the inner wall of the air vent passage 2432; or, multiple water baffle members 244 can be arranged at intervals along a direction inclined at an acute angle to the axial direction of the air vent passage 2432.

[0316] As Figure 29As shown, the sum of the projections of multiple groups of water baffle members 244 along the axial direction of the ventilation duct 2432 is equal to or greater than the projection of the inlet end of the ventilation duct 2432 along the axial direction, so as to achieve full coverage of the ventilation duct 2432 by multiple groups of water baffle members 244.

[0317] Among them, the water baffle member 244 can be structures such as a water baffle rib, a water baffle film, or a water baffle plate 241.

[0318] According to the water baffle cover 24 provided by the embodiment of the present application, by providing multiple groups of water baffle members 244 spaced apart along the axial direction of the ventilation duct 2432, each group of water baffle members 244 includes multiple water baffle members 244 spaced apart along a direction intersecting the axial direction of the ventilation duct 2432, and the projection of the multiple groups of water baffle members 244 along the axial direction of the ventilation duct 2432 covers the projection of the inlet end of the ventilation duct 2432 along the axial direction, so that the air flow is sucked into the air duct 21 by the fan 22 in a zigzag shape along the intervals between adjacent two groups of water baffle members 244 and the intervals between adjacent two water baffle members 244. It can reduce the situation that the water flow directly enters the air duct 21 during the cleaning process of the cleaning equipment and directly impacts the inside of the fan 22, causing pollution to the impeller 222, playing a protective role, and at the same time improving the air volume of the fan 22, which is beneficial to using a higher-power heater 23 downstream of the fan 22 to accelerate the drying process.

[0319] Among them, the multiple water baffle members 244 can be distributed parallel to each other in the plane where they are located, or can be distributed crosswise.

[0320] In some embodiments, the water baffle members 244 in multiple groups of water baffle members 244 are arranged parallel and spaced apart to equalize the flow rate and air volume of the air flow.

[0321] In some embodiments, the distance between adjacent two water baffle members 244 in multiple groups of water baffle members 244 is equal to further equalize the flow rate and air volume of the air flow.

[0322] In some embodiments, as Figure 30 shown, on the side of the water baffle member 244 facing away from the inlet end of the ventilation duct 2432, there is a flow guiding surface 2443, and the flow guiding surface 2443 is inclined outward from the water baffle member 244 along the direction close to the inlet end of the ventilation duct 2432.

[0323] Among them, the flow guiding surface 2443 can be a plane or an arc surface.

[0324] By providing the flow guiding surface 2443, the water vapor in the cleaning chamber 11 encountering the condensate generated by the fan 22 can flow back into the cleaning chamber 11 along the flow guiding surface 2443, reducing the residence time of the condensate in the water baffle member 244 and increasing the drying effect inside the chamber.

[0325] In some embodiments, as Figure 30As shown, the water baffle 244 includes a first plate 2441 and a second plate 2442. One side of the first plate 2441 facing away from the inlet end of the ventilation duct 2432 is connected to one side of the second plate 2442 facing away from the inlet end of the ventilation duct 2432. The normal lines of the first plate 2441 and the second plate 2442 form acute angles with the axial direction of the ventilation duct 2432. The surfaces of the first plate 2441 facing away from the inlet end of the ventilation duct 2432 and the second plate 2442 facing away from the inlet end of the ventilation duct 2432 form a diversion surface 2443.

[0326] Among them, the first plate 2441 and the second plate 2442 can be symmetrically arranged along their connection, or can be asymmetrically arranged, and can be specifically set according to the actual use scenario. In the case where the first plate 2441 and the second plate 2442 are asymmetrically arranged, the lengths and widths of the first plate 2441 and the second plate 2442 can be different.

[0327] Among them, one side of the first plate 2441 and the second plate 2442 facing away from the inlet end of the ventilation duct 2432 is connected, and one side of the first plate 2441 and the second plate 2442 close to the inlet end of the ventilation duct 2432 is spaced apart. The first plate 2441 and the second plate 2442 form a bracket-shaped interception structure, which can increase the resistance of water flow, reduce the entry of water flow, and at the same time will not generate a large resistance to air flow.

[0328] By setting the water baffle 244 to have a double-sided diversion surface 2443, the condensed water generated by the fan 22 can flow back into the cleaning chamber 11 along the diversion surface 2443, reducing the residence time of the condensed water in the water baffle 244 and increasing the drying effect in the chamber. At the same time, it can also intercept the water vapor flowing into the air duct 21 along with the water vapor, reducing the amount of water entering the air duct 21 and playing a protective role for electrical components such as the fan 22 and the heater 23 in the air duct 21.

[0329] In some embodiments, as Figure 30 shown, the main cover 243 includes: a pipe body 2431 and a flange 2433; the pipe body 2431 forms a ventilation duct 2432; the flange 2433 is connected to the outer periphery of the pipe body 2431 and is arranged around the pipe body 2431. An installation structure 242 is provided on one side of the pipe body 2431 facing away from the inlet end of the ventilation duct 2432.

[0330] Among them, the pipe body 2431 has a certain axial length, which can increase the number of groups of the water baffle 244 and improve the water blocking effect.

[0331] The flange 2433 can be circular. The flange 2433 is arranged around the pipe body 2431. The inner side of the flange 2433 is connected to the outer periphery of the pipe body 2431, and the outer side of the flange 2433 extends in a direction away from the pipe body 2431. The width of the flange 2433 is set according to the actual installation environment of the water baffle cover 24.

[0332] The provision of the flange 2433 can increase the overlapping area when the water baffle 24 is connected to the whole machine, thereby enhancing the sealing effect.

[0333] In some embodiments, as Figure 28 shown, there are multiple mounting structures 242. The multiple mounting structures 242 are spaced apart around the tube body 2431, and the multiple mounting structures 242 are assembled or disassembled with the whole machine by means of knobs.

[0334] Among them, the number of the mounting structures 242 can be set to 2, 3 or more. The multiple mounting structures 242 can be evenly distributed around the circumference of the tube body 2431, or can be set at different angles according to requirements. The number and distribution mode of the mounting structures 242 can be set according to the actual use scenario.

[0335] By adding multiple mounting structures 242, multi-point connection between the main cover body 243 and the whole machine can be achieved, improving the reliability of the connection.

[0336] Before connecting the mounting structure 242 to the whole machine, each mounting structure 242 among the multiple mounting structures 242 can be located between the whole machine and the notch corresponding to the mounting structure 242. Then, the main cover body 243 is rotated by a certain angle relative to the air inlet end 20 of the whole machine so that the connecting member 2422 of the whole machine and the mounting structure 242 have an overlapping part in the axial direction projection of the air vent passage 2432. At this time, the mounting structure 242 and the whole machine are snap-connected.

[0337] In some embodiments, as Figure 28 shown, the tube body 2431 is provided with a water guide port 2434, and the water guide port 2434 is flush with the side of the flange 2433 facing away from the inlet end of the air vent passage 2432.

[0338] Among them, the water guide port 2434 communicates with the air vent passage 2432 and the air duct 21. The condensed water generated when the water vapor in the air flow condenses on the flange 2433 or the tube body 2431 can flow into the air vent passage 2432 from the water guide port 2434 and then flow back into the cleaning chamber 11, reducing the residence time of the condensed water in the water baffle 244 and increasing the drying effect inside the cavity.

[0339] In some embodiments, as Figure 30 shown, the side of the flange 2433 facing away from the inlet end of the air vent passage 2432 is inclined downward towards the radially inner end, so that the condensed water can flow along the inclined side of the flange 2433 into the water guide port 2434, thereby further reducing the residence time of the condensed water in the water baffle 244 and increasing the drying effect inside the cavity.

[0340] In some embodiments, as Figure 28As shown, a sealing installation position 24331 for installing a sealing member is provided on the side of the flange 2433 facing away from the inlet end of the air passage 2432.

[0341] The sealing installation position 24331 is used to install a sealing component, which may be a sealing strip, a sealing ring, a sealing gasket or other components.

[0342] The sealing installation position 24331 can be a groove, a protrusion or a flat structure. The seal is installed in the sealing installation position 24331. The seal between the flange 2433 and the entire machine can be achieved by squeezing the seal. The structure of the sealing installation position 24331 is determined according to the type of seal.

[0343] In some embodiments, as Figure 28 As shown, the side of the flange 2433 facing away from the inlet end of the air duct 2432 is provided with multiple pairs of protrusions 24332 distributed circumferentially around the tube body 2431, each pair of protrusions 24332 includes two protrusions 24332 arranged radially spaced apart, and multiple pairs of protrusions 24332 form a sealing mounting position 24331.

[0344] The two protrusions 24332 are spaced apart to form a groove, and at least a portion of the seal is clamped between the two protrusions 24332 .

[0345] By providing multiple pairs of protrusions 24332, which are spaced apart and distributed around the circumference of the tube body 2431, multi-point fixation of the seal can be achieved, which limits the position and deformation of the seal and improves the sealing performance.

[0346] In some embodiments, as Figure 31 As shown, a reinforcing rib 24333 is provided between one side of the flange 2433 close to the inlet end of the air passage 2432 and the outer side wall of the tube body 2431 .

[0347] The reinforcing ribs 24333 can be connected to the flange 2433 and the outer wall of the tube body 2431 by integral molding, welding, gluing, etc. The reinforcing ribs 24333 can be straight, curved, or other specific shapes, depending on the desired reinforcement effect and structural form.

[0348] By providing the reinforcing ribs 24333 , the stress and pressure from the external environment can be effectively dispersed and withstood, deformation, cracking or loosening of the connection between the flange 2433 and the tube body 2431 can be prevented, and the connection strength and stability between the flange 2433 and the tube body 2431 can be improved.

[0349] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same category, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0350] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application.

[0351] In the description of this application, the "first feature" and "second feature" may include one or more of such features.

[0352] In the description of this application, the meaning of "a plurality" is two or more.

[0353] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0354] In the description of this application, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal level than the second feature.

[0355] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0356] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A cleaning device, characterized in that, Comprising: An inner container which forms a cleaning chamber; An exhaust component installed on the inner container and configured to discharge the gas in the cleaning chamber when it is turned on; An air duct installed on the inner container and having an air inlet, a make-up air inlet and an air outlet. The air inlet and the air outlet are both communicated with the cleaning chamber, and the make-up air inlet is communicated with the outside; A fan installed in the air duct, and the air inlet and the make-up air inlet are both communicated with the inlet of the fan. The outlet of the fan is communicated with the air outlet; A heater configured to heat the gas flowing through the air duct when it is turned on.

2. The cleaning device according to claim 1, wherein The cleaning device has an internal circulation drying working mode. In the internal circulation drying working mode, the fan and the heater work, and the exhaust component stops; And / or, the cleaning device has a mixed working mode; in the mixed working mode, the fan, the heater and the exhaust component all work, and the air flow rate inhaled from the air inlet is less than the air flow rate inhaled from the make-up air inlet.

3. The cleaning device according to claim 1, characterized in that, The inlet of the fan is arranged towards the lower air inlet and is spaced apart from the bottom shell of the air duct to form a lateral make-up air port, and the make-up air port is communicated with the make-up air inlet.

4. The cleaning device according to claim 3, wherein The fan includes: an upper shell, an impeller and a motor assembly. The motor assembly is power-coupled to the impeller. The upper shell of the air duct has a downwardly protruding mounting shell. The upper shell is connected to the mounting shell to form a receiving cavity. The impeller is installed in the receiving cavity, and the mounting shell is spaced apart from the bottom shell of the air duct to form the make-up air port.

5. The cleaning device according to claim 1, characterized in that, The fan is installed above the top wall of the inner container. The air duct includes: a make-up air branch extending from the top wall of the inner container to the side of the inner container. The lower end of the make-up air branch forms a make-up air inlet located on the side of the inner container.

6. The cleaning device according to claim 5, wherein, The air duct further includes: a main air duct, a first branch and a second branch. The first end of the main air duct forms an air inlet. The first ends of the first branch and the second branch are both connected to the second end of the main air duct. The second ends of the first branch and the second branch respectively form a first air outlet and a second air outlet. The air inlet, the first air outlet and the second air outlet are all communicated with the cleaning chamber; the make-up air branch is arranged side by side with the main air duct.

7. The cleaning device according to claim 6, wherein, The first branch extends obliquely forward and downward from the first end to the second end, and the make-up air inlet faces the upper side wall of the first branch.

8. The cleaning device according to claim 5, characterized in that The height of the cleaning chamber is H0, and the length of the make-up air branch is L3, satisfying: L3≥0.5H0.

9. The cleaning device according to claim 1, characterized in that When the exhaust component and the fan are working, the exhaust volume of the exhaust component is not less than the air supply volume of the make-up air inlet.

10. The cleaning device according to any one of claims 1-9, characterized in that Further comprising: A side plate. The heater is installed in the area of the air duct located on the side of the inner container. The side plate is installed on the side wall of the inner container and covers at least part of the outside of the air duct.

11. The cleaning device according to claim 10, characterized in that, There is a gap between the inner side surface of the side plate and the air duct, and the gap is c, satisfying c≥2mm.

12. The cleaning device according to any one of claims 1-9, characterized in that, The power of the heater is P, satisfying: P ≤ 500W.

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