Cleaning apparatus

Abstract

A cleaning apparatus, belonging to the field of cleaning apparatuses. The cleaning apparatus comprises: an inner container, an air exhaust assembly, an air path, a blower fan, a heater and a water blocking cover. The inner container forms a cleaning chamber. The air exhaust assembly is configured to discharge air out of the cleaning chamber when being turned on. The air path is provided with an air inlet leading to the cleaning chamber and an air outlet leading to the cleaning chamber, the air inlet being located in the top wall of the inner container. The blower fan is configured to drive the air in the air path when being turned on. The heater is configured to heat the air in the air path when being turned on. The projection of an inlet of the blower fan on the top wall of the inner container at least partially overlaps the projection of the air inlet on the top wall of the inner container, and the projection of the water blocking cover on the top wall of the inner container covers the projection of the air inlet on the top wall of the inner container.

Description

cleaning equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number: 202410150245.6 and application date of February 1, 2024, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of household appliances, and in particular to a cleaning device. Background Art

[0004] Dishwashers and other cleaning equipment have various drying methods, including condensation drying, hot air drying, adsorption drying, and open-door quick drying. Condensation drying has issues such as poor drying performance and long drying times; adsorption drying is expensive and can produce odors after prolonged storage; and open-door quick drying can easily attract insects and prevent the door from automatically closing in humid areas. Therefore, considering both cost and drying performance, hot air drying has become the preferred method for most manufacturers.

[0005] Currently, most cleaning appliances, such as dishwashers, rely on external circulation systems for hot air drying. This system draws in outside air, heats it with a heater, and then introduces it into the cleaning chamber to dry the items inside. During the hot air drying process, the outside air drawn into the cleaning chamber creates a positive pressure. To maintain a constant pressure in the cleaning chamber, the cleaning appliance's exhaust system is typically turned on to minimize water vapor leakage caused by this positive pressure.

[0006] However, opening the exhaust component will cause the heat energy of the heated air to be discharged from the cleaning chamber without being fully utilized, resulting in problems such as high energy consumption, low drying efficiency and poor drying effect. In addition, during the cleaning process, the cleaning water can easily flow to the outside of the cleaning chamber, which poses a risk of damaging the electrical equipment of the cleaning equipment and has poor reliability, and needs to be improved.

[0007] Summary of the Invention

[0008] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a cleaning device that, compared to cleaning devices that perform hot air drying through external circulation, improves the utilization rate of hot air thermal energy, reduces the energy consumption of the cleaning device in the hot air drying mode, and reduces the amount of water that flows directly into the interior of the blower from the blower inlet during the cleaning mode, thereby improving the operating reliability of internal circulation components such as the blower and heater.

[0009] In a first aspect, the present application provides a cleaning device, comprising:

[0010] The inner tank forms a cleaning chamber;

[0011] an exhaust assembly, mounted on the inner tank and configured to exhaust the gas in the cleaning chamber when opened;

[0012] an air duct, mounted on the inner liner and having an air inlet communicating with the cleaning chamber and an air outlet communicating with the cleaning chamber, wherein the air inlet is located on the top wall of the inner liner;

[0013] a fan, mounted on the top wall of the inner container and configured to drive the gas in the air duct when turned on;

[0014] a heater, wherein the heater is configured to heat the gas in the air duct when turned on;

[0015] A water retaining cover, the water retaining cover being installed at the air inlet;

[0016] The projection of the fan inlet on the top wall of the inner liner at least partially overlaps with the projection of the air inlet on the top wall of the inner liner, and the projection of the water retaining cover on the top wall of the inner liner covers the projection of the air inlet on the top wall of the inner liner.

[0017] According to the cleaning equipment provided in the embodiments of the present application, on the one hand, by providing internal circulation components such as an air duct, a fan, and a heater, the air inlet and the air outlet of the air duct are both connected to the cleaning chamber. The air in the cleaning chamber is sucked into the air duct through the air inlet by the fan, and the hot air heated by the heater enters the cleaning chamber through the air outlet of the air duct. The dry air in the cleaning chamber is circulated and heated by the heater to achieve hot air drying of the dishes in the cleaning chamber. Compared to cleaning equipment that uses external circulation for hot air drying, the internal circulation drying mode improves the utilization rate of hot air thermal energy, reduces the energy consumption of the cleaning equipment in the hot air drying mode, and achieves energy saving. On the other hand, by setting the relationship between the projection S1 of the fan inlet on the top wall of the inner tank, the projection S2 of the air inlet on the top wall of the inner tank and the projection S3 of the water retaining cover on the top wall of the inner tank, the suction area of ​​the fan can be increased, the drying efficiency can be improved, and the amount of water directly rushing into the interior of the fan from the inlet of the fan can be reduced in the cleaning mode of the cleaning equipment, thereby improving the working reliability of the internal circulation components such as the fan and heater.

[0018] According to one embodiment of the present application, the area of ​​the intersection of the projection of the fan inlet on the top wall of the inner liner and the projection of the air inlet on the top wall of the inner liner is not less than 1 / 2 of the projection of the fan inlet on the top wall of the inner liner.

[0019] According to one embodiment of the present application, the air duct includes an air supply branch, and the air inlet is separated from the edge of the projection of the water retaining cover on the top wall of the inner liner in any area of ​​the projection of the top wall of the inner liner.

[0020] According to one embodiment of the present application, the ratio of the projection of the water retaining cover on the top wall of the inner liner to the projection of the air inlet on the top wall of the inner liner is not less than 1.1.

[0021] According to one embodiment of the present application, the air inlet is arranged at a position close to the back plate of the inner liner, and the air outlet of the air duct includes multiple air outlets arranged on the same side wall of the inner liner.

[0022] According to one embodiment of the present application, the air duct includes: a first branch and a second branch, the upper ends of the first branch and the second branch are both connected to the outlet of the fan, the lower ends of the first branch and the second branch are each formed with the air outlet, and the lower end of the first branch is close to the front end opening of the inner tank, and the lower end of the second branch is close to the back panel of the inner tank, and the length of the first branch is greater than the length of the second branch.

[0023] According to one embodiment of the present application, the air duct includes a downwind duct, and a plurality of air outlets are formed at the lower end of the downwind duct. The width of the downwind duct along the front-to-back direction gradually increases from top to bottom, and the thickness of the downwind duct along the left-to-right direction gradually decreases from top to bottom.

[0024] According to one embodiment of the present application, the air duct further has a supplementary air inlet, which is connected to the outside and to the inlet of the fan.

[0025] According to one embodiment of the present application, the fan is installed above the top wall of the inner liner, and the air duct includes: an air supply branch, which extends from the top wall of the inner liner to the side of the inner liner, and the lower end of the air supply branch forms an air supply inlet located on the side of the inner liner; 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 branch.

[0026] According to one embodiment of the present application, the air duct further has a supply air inlet, which is connected to the outside world; the air duct is provided with a valve, which is configured to close the supply air inlet under normal conditions and open under the action of a pressure difference.

[0027] According to one embodiment of the present application, the fan is installed above the top wall of the inner liner, and the air duct includes: a main air duct and a supply air branch, the supply air branch is located between the main air duct and the top wall of the inner liner, and the valve is installed on the wall between the supply air branch and the main air duct; the valve includes a damper pivotally installed on the wall between the supply air branch and the main air duct, the first part of the damper is located in the supply air branch, and the second part of the damper is located in the main air duct, and the damper is configured to block the supply air branch under the action of gravity and open when the fan is turned on.

[0028] According to one embodiment of the present application, the cleaning device has an internal circulation drying working mode. In the internal circulation drying working mode, the fan and the heater are working, and the exhaust component is stopped.

[0029] According to one embodiment of the present application, the cleaning device has a dehumidification negative pressure working mode. In the dehumidification negative pressure working mode, the fan and the heater are stopped, and the exhaust component is working;

[0030] According to one embodiment of the present application, the cleaning device has a mixed working mode; in the mixed working mode, the fan, the heater and the exhaust assembly are all working;

[0031] According to one embodiment of the present application, the cleaning device has a mixed dehumidification working mode; in the mixed dehumidification working mode, the fan and the exhaust assembly are both working, and the heater is stopped.

[0032] According to an embodiment of the present application, when the exhaust assembly is in operation, the exhaust volume of the exhaust assembly is not less than the volume of gas entering the cleaning chamber from the outside.

[0033] According to one embodiment of the present application, it also includes: a side panel, the heater is installed in the area of ​​the air duct located on the side of the inner tank, the side panel is installed on the side wall of the inner tank, and the cover is arranged outside at least part of the air duct, and the inner side surface of the side panel is separated from the air duct and the heater.

[0034] According to one embodiment of the present application, the power of the heater is P, which satisfies: P≤500W.

[0035] According to one embodiment of the present application, the fan includes: an upper shell, an impeller and a motor assembly, the motor assembly is dynamically coupled to the impeller, the upper shell is connected to the air duct to form an accommodating cavity, and the impeller is installed in the accommodating cavity.

[0036] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a cleaning device that, compared to cleaning devices that perform hot air drying through external circulation, improves the utilization rate of hot air thermal energy, reduces the energy consumption of the cleaning device in the hot air drying mode, and reduces the amount of water that flows directly into the interior of the blower from the blower inlet during the cleaning mode, thereby improving the operating reliability of internal circulation components such as the blower and heater.

[0037] In a second aspect, the present application provides a cleaning device, comprising:

[0038] The inner tank forms a cleaning chamber;

[0039] an exhaust assembly, mounted on the inner tank and configured to exhaust the gas in the cleaning chamber when opened;

[0040] an air duct, mounted on the inner liner and having an air inlet communicating with the cleaning chamber and an air outlet communicating with the cleaning chamber, wherein the air inlet is located on the top wall of the inner liner;

[0041] a fan, mounted on the top wall of the inner container and configured to drive the gas in the air duct when turned on;

[0042] a heater, wherein the heater is configured to heat the gas in the air duct when turned on;

[0043] A water retaining cover, the water retaining cover being installed at the air inlet;

[0044] The projection of the fan inlet on the top wall of the inner liner at least partially overlaps with the projection of the air inlet on the top wall of the inner liner, and the projection of the water retaining cover on the top wall of the inner liner covers the projection of the air inlet on the top wall of the inner liner.

[0045] According to the cleaning equipment provided in the embodiments of the present application, on the one hand, by providing internal circulation components such as an air duct, a fan, and a heater, the air inlet and the air outlet of the air duct are both connected to the cleaning chamber. The air in the cleaning chamber is sucked into the air duct through the air inlet by the fan, and the hot air heated by the heater enters the cleaning chamber through the air outlet of the air duct. The dry air in the cleaning chamber is circulated and heated by the heater to achieve hot air drying of the dishes in the cleaning chamber. Compared to cleaning equipment that uses external circulation for hot air drying, the internal circulation drying mode improves the utilization rate of hot air thermal energy, reduces the energy consumption of the cleaning equipment in the hot air drying mode, and achieves energy saving. On the other hand, by setting the relationship between the projection S1 of the fan inlet on the top wall of the inner tank, the projection S2 of the air inlet on the top wall of the inner tank and the projection S3 of the water retaining cover on the top wall of the inner tank, the suction area of ​​the fan can be increased, the drying efficiency can be improved, and the amount of water directly rushing into the interior of the fan from the inlet of the fan can be reduced in the cleaning mode of the cleaning equipment, thereby improving the working reliability of the internal circulation components such as the fan and heater.

[0046] According to one embodiment of the present application, the area of ​​the intersection of the projection of the fan inlet on the top wall of the inner liner and the projection of the air inlet on the top wall of the inner liner is not less than 1 / 2 of the projection of the fan inlet on the top wall of the inner liner.

[0047] According to one embodiment of the present application, the air duct includes an air supply branch, and the air inlet is separated from the edge of the projection of the water retaining cover on the top wall of the inner liner in any area of ​​the projection of the top wall of the inner liner.

[0048] According to one embodiment of the present application, the ratio of the projection of the water retaining cover on the top wall of the inner liner to the projection of the air inlet on the top wall of the inner liner is not less than 1.1.

[0049] According to one embodiment of the present application, the air inlet is arranged at a position close to the back plate of the inner liner, and the air outlet of the air duct includes multiple air outlets arranged on the same side wall of the inner liner.

[0050] According to one embodiment of the present application, the air duct includes: a first branch and a second branch, the upper ends of the first branch and the second branch are both connected to the outlet of the fan, the lower ends of the first branch and the second branch are each formed with the air outlet, and the lower end of the first branch is close to the front end opening of the inner tank, and the lower end of the second branch is close to the back panel of the inner tank, and the length of the first branch is greater than the length of the second branch.

[0051] According to one embodiment of the present application, the air duct includes a downwind duct, and a plurality of air outlets are formed at the lower end of the downwind duct. The width of the downwind duct along the front-to-back direction gradually increases from top to bottom, and the thickness of the downwind duct along the left-to-right direction gradually decreases from top to bottom.

[0052] According to one embodiment of the present application, the air duct further has a supplementary air inlet, which is connected to the outside and to the inlet of the fan.

[0053] According to one embodiment of the present application, the fan is installed above the top wall of the inner liner, and the air duct includes: an air supply branch, which extends from the top wall of the inner liner to the side of the inner liner, and the lower end of the air supply branch forms an air supply inlet located on the side of the inner liner; 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 branch.

[0054] According to one embodiment of the present application, the air duct further has a supply air inlet, which is connected to the outside world; the air duct is provided with a valve, which is configured to close the supply air inlet under normal conditions and open under the action of a pressure difference.

[0055] According to one embodiment of the present application, the fan is installed above the top wall of the inner liner, and the air duct includes: a main air duct and a supply air branch, the supply air branch is located between the main air duct and the top wall of the inner liner, and the valve is installed on the wall between the supply air branch and the main air duct; the valve includes a damper pivotally installed on the wall between the supply air branch and the main air duct, the first part of the damper is located in the supply air branch, and the second part of the damper is located in the main air duct, and the damper is configured to block the supply air branch under the action of gravity and open when the fan is turned on.

[0056] According to one embodiment of the present application, the cleaning device has an internal circulation drying working mode. In the internal circulation drying working mode, the fan and the heater are working, and the exhaust component is stopped.

[0057] And / or, the cleaning device has a dehumidification negative pressure working mode, in which the fan and the heater are stopped and the exhaust component is working;

[0058] And / or, the cleaning device has a mixed working mode; in the mixed working mode, the fan, the heater and the exhaust assembly are all working;

[0059] And / or, the cleaning device has a mixed dehumidification working mode; in the mixed dehumidification working mode, the fan and the exhaust component are both working, and the heater is stopped.

[0060] According to an embodiment of the present application, when the exhaust assembly is in operation, the exhaust volume of the exhaust assembly is not less than the volume of gas entering the cleaning chamber from the outside.

[0061] According to one embodiment of the present application, it also includes: a side panel, the heater is installed in the area of ​​the air duct located on the side of the inner tank, the side panel is installed on the side wall of the inner tank, and the cover is arranged outside at least part of the air duct, and the inner side surface of the side panel is separated from the air duct and the heater.

[0062] According to one embodiment of the present application, the power of the heater is P, which satisfies: P≤500W.

[0063] According to one embodiment of the present application, the fan includes: an upper shell, an impeller and a motor assembly, the motor assembly is dynamically coupled to the impeller, the upper shell is connected to the air duct to form an accommodating cavity, and the impeller is installed in the accommodating cavity.

[0064] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0066] FIG1 is a schematic diagram of a cleaning device according to an embodiment of the present invention;

[0067] FIG2 is a schematic diagram of the structure of an internal circulation component provided in an embodiment of the present application;

[0068] FIG3 is a second structural diagram of an internal circulation assembly provided in an embodiment of the present application;

[0069] FIG4 is a projection diagram of an internal circulation component (partial structure) provided in an embodiment of the present application;

[0070] FIG5 is a third structural diagram of an internal circulation assembly provided in an embodiment of the present application;

[0071] FIG6 is a fourth structural diagram of the internal circulation assembly provided in an embodiment of the present application;

[0072] FIG7 is a partial enlarged view of point F in FIG6;

[0073] FIG8 is a second structural diagram of a cleaning device provided in an embodiment of the present application;

[0074] FIG9 is a partial enlarged view of point B in FIG8 ;

[0075] FIG10 is a third structural diagram of a cleaning device provided in an embodiment of the present application;

[0076] FIG11 is a fifth structural diagram of an internal circulation assembly provided in an embodiment of the present application;

[0077] FIG12 is a fourth structural diagram of a cleaning device provided in an embodiment of the present application;

[0078] FIG13 is a fifth structural diagram of a cleaning device provided in an embodiment of the present application;

[0079] FIG14 is a sixth structural diagram of a cleaning device provided in an embodiment of the present application;

[0080] FIG15 is a sixth structural diagram of an internal circulation assembly provided in an embodiment of the present application;

[0081] FIG16 is a seventh structural diagram of an internal circulation assembly provided in an embodiment of the present application;

[0082] FIG17 is a seventh structural diagram of a cleaning device provided in an embodiment of the present application;

[0083] FIG18 is an eighth structural diagram of a cleaning device provided in an embodiment of the present application;

[0084] FIG19 is a ninth structural diagram of a cleaning device provided in an embodiment of the present application;

[0085] FIG20 is a tenth structural diagram of a cleaning device provided in an embodiment of the present application;

[0086] FIG21 is an eighth structural diagram of an internal circulation assembly provided in an embodiment of the present application;

[0087] FIG22 is a schematic structural diagram of a flexible connector provided in an embodiment of the present application;

[0088] FIG23 is a schematic structural diagram of a downwind duct provided in an embodiment of the present application;

[0089] FIG24 is a schematic structural diagram of an upper air duct provided in an embodiment of the present application;

[0090] FIG25 is a schematic structural diagram of the main body provided in an embodiment of the present application;

[0091] FIG26 is an eleventh structural diagram of a cleaning device provided in an embodiment of the present application;

[0092] FIG27 is a partial enlarged view of point D in FIG26;

[0093] FIG28 is a twelfth structural diagram of a cleaning device provided in an embodiment of the present application;

[0094] FIG29 is a partial enlarged view of point C in FIG28;

[0095] FIG30 is a thirteenth structural diagram of a cleaning device provided in an embodiment of the present application;

[0096] FIG31 is a partial enlarged view of point E in FIG28;

[0097] FIG32 is a schematic diagram of the structure of a water retaining cover according to an embodiment of the present application;

[0098] FIG33 is a second structural diagram of a water retaining cover provided in an embodiment of the present application;

[0099] FIG34 is a third structural diagram of a water retaining cover provided in an embodiment of the present application;

[0100] FIG35 is a fourth structural diagram of a water retaining cover provided in an embodiment of the present application;

[0101] FIG36 is a fifth structural diagram of a water retaining cover provided in an embodiment of the present application;

[0102] Figure 37 is the sixth structural schematic diagram of the water retaining cover provided in the embodiment of the present application.

[0103] Reference numerals:

[0104] Inner container 1, cleaning chamber 11, first side surface 111, second side surface 112; top wall 12, side wall 13, back plate 14, front opening 15, bottom wall 16;

[0105] Internal circulation component 2, air inlet end 20, flange 201, air duct 21, air inlet 211, air outlet 212, air supply branch 213, air supply inlet 2131;

[0106] Upper air duct 214, horizontal section 2141, lower connecting section 2142, first connecting structure 2143; fan installation position 2146, first air guide section 2147, volute tongue 2148, arc section 21481, straight section 21482; second air guide section 2149;

[0107] Downstream duct 215, first branch 2151, second branch 2152, flow guide 2153, expansion section 2154, isolation plate 2155, grille 2156; cover 2157; fourth connecting structure 21571; main body 2158, upper connecting section 21581, duct housing 21582, third connecting structure 21583, vapor chamber 21584, heater mounting position 21585, thermostat mounting position 21586, main duct 216; flexible connector 217, cover 2171, second connecting structure 21711, sleeve 2172, avoidance hole 2173;

[0108] Fan 22, upper shell 221, impeller 222; heater 23;

[0109] Water retaining cover 24, water retaining plate 241, annular rib 2411, mounting structure 242, slot 2421, connector 2422, hollow slot 24221, and connector 2423; main cover body 243, tube body 2431, vent 2432, flange 2433, sealing mounting position 24331, raised portion 24332, reinforcing rib 24333, and water guide port 2434; water retaining member 2444, first plate 2441, second plate 2442, and guide surface 2443; sealing device 25; valve 26, damper 261, first portion 2611, and second portion 2612; and thermostat 29.

[0110] Side panel 3, exhaust assembly 4, air inlet 41, bowl basket 5. DETAILED DESCRIPTION

[0111] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0112] The following describes a cleaning device according to an embodiment of the present application with reference to Figures 1 to 37. The cleaning device of the present application can clean and dry various items such as tableware and clothing.

[0113] The cleaning device may be a dishwasher, clothes dryer, or shoe washer, etc., which has a hot air drying function. In the embodiments of the present invention, the cleaning device includes both a cleaning function and a hot air drying function. The cleaning mechanism in the cleaning function cleans the items in the cleaning chamber, and after cleaning, the hot air drying process begins. Drying the items in the cleaning chamber can reduce bacterial growth. For ease of explanation, this application uses a dishwasher as an example.

[0114] As shown in FIG. 1 and FIG. 3 , the cleaning device of the embodiment of the present application includes: an inner tank 1 , an exhaust assembly 4 , an air duct 21 , a fan 22 , a heater 23 and a water retaining cover 24 .

[0115] The inner liner 1 forms a clean chamber 11; the exhaust assembly 4 is installed on the inner liner 1, and is configured to discharge the gas in the clean chamber 11 when it is turned on; the air duct 21 is installed on the inner liner 1, and has an air inlet 211 connected to the clean chamber 11 and an air outlet 212 connected to the clean chamber 11, and the air inlet 211 is located on the top wall 12 of the inner liner 1; the fan 22 is installed on the top wall 12 of the inner liner 1, and is configured to drive the gas in the air duct 21 when it is turned on; the heater 23 is configured to heat the gas in the air duct 21 when it is turned on; the water retaining cover 24 is installed on the air inlet 211.

[0116] As shown in Figures 4, 5 and 7, the projection of the inlet of the fan 22 on the top wall 12 of the inner liner 1 at least partially overlaps with the projection of the air inlet 211 on the top wall 12 of the inner liner 1, and the projection of the water retaining cover 24 on the top wall 12 of the inner liner 1 covers the projection of the air inlet 211 on the top wall 12 of the inner liner 1.

[0117] As shown in Figure 1, the inner liner 1 includes a top wall 12, a bottom wall 16, a back plate 14, a side wall 13 and a front opening 15. The top wall 12, bottom wall 16, back plate 14 and side wall 13 of the inner liner 1 enclose a cleaning chamber 11. The top wall 12 of the inner liner 1 is the top wall 12 of the cleaning chamber 11, the side wall 13 of the inner liner 1 is the side of the cleaning chamber 11, the back plate 14 of the inner liner 1 is the back of the cleaning chamber 11, and the bottom wall 16 of the inner liner 1 is the bottom surface of the cleaning chamber 11.

[0118] The cleaning device may also include a cover plate, which is pivotally connected to the inner liner 1 and can be rotated relative to the inner liner 1 to open and close the front opening 15 of the inner liner 1 to facilitate placing or removing items from the cleaning chamber 11. The cover plate and the top wall 12, bottom wall 16, back panel 14 and side wall 13 of the inner liner 1 enclose the cleaning chamber 11.

[0119] The cleaning chamber 11 is used for placing 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.

[0120] As shown in Figure 1, there can be an item placement rack in the cleaning chamber 11. The item placement rack can include a bowl basket 5, a chopstick rack, a cup rack and other brackets. The item placement rack can fix and support tableware, and can also divide the cleaning chamber 11 into spaces, thereby increasing the space utilization rate of the cleaning chamber 11.

[0121] The cleaning chamber 11 may also include a spray arm for spraying high-pressure water. The high-pressure water can spray and flush the tableware in the cleaning chamber 11 to wash away dirt attached to the tableware, thereby rinsing the tableware. Multiple spray arms can be provided, and multiple spray arms can be installed at different positions in the cleaning chamber 11 to spray the tableware in multiple directions, angles, and levels, thereby improving the cleaning effect of the tableware.

[0122] The exhaust assembly 4 is a component capable of creating a normal pressure or negative pressure within the cleaning chamber 11. The exhaust assembly 4 can be a fluid machine with an exhaust function, such as an exhaust fan 22 or an air pump. When the cleaning chamber 11 is being dried with hot air, the exhaust assembly 4 is used to exhaust evaporated or volatilized water vapor within the cleaning chamber 11 along with the air, thereby reducing the relative humidity of the air within the cleaning chamber 11 and facilitating the evaporation of more residual water.

[0123] 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 component 4 is connected to the cleaning chamber 11. The air inlet 41 of the exhaust component 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.

[0124] The gas heated by the heater 23 is discharged into the cleaning chamber 11 from the air outlet 212 of the air duct 21, and at least part of the hot gas is discharged from the cleaning chamber 11 along with water vapor from the air inlet 41 of the exhaust component 4. 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 component 4.

[0125] The air duct 21 may be used to realize the circulation of air in the cleaning chamber 11 , for example, to realize internal circulation, external circulation, or a mixture of internal and external circulation.

[0126] The air duct 21 can be installed on the outside or inside of the inner container 1. The air duct 21 can be connected to the wall of the inner container 1 by means of clamping, threaded connection or welding.

[0127] As shown in Figure 1, the air duct 21 has an air inlet 211 and an air outlet 212, both of which are connected to 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. The hot air can be used to dry items such as tableware in the cleaning chamber 11.

[0128] In the drying working mode of the cleaning device, the dry air in the cleaning chamber 11 is circulated and heated by the heater 23 to reach a suitable temperature and humidity, so as to perform hot air drying on the tableware in the cleaning chamber 11 .

[0129] In this embodiment, as shown in Figure 1, the air inlet 211 of the air duct 21 is located on the top wall 12 of the inner liner 1. The air inlet 211 of the air duct 21 can be located in the middle of the top wall 12 of the inner liner 1, or it can be located near the side of the top wall 12 of the inner liner 1, and the specific setting is based on the usage scenario.

[0130] It can be understood that, in the cleaning chamber 11, the air flow circulates upward from a position near the bottom of the cleaning chamber 11, and the air inlet 211 of the air duct 21 is set on the top wall 12 of the inner tank 1. On the one hand, the uniformity of the temperature distribution in the cleaning chamber 11 can be improved by the flow direction of the air flow; on the other hand, due to the effect of gravity, the water vapor can be reduced from entering the air duct 21, the fan 22 and the heater 23 through the air inlet 211, thereby protecting them.

[0131] The inlet of the fan 22 is connected to the air inlet 211 of the air duct 21, and the outlet of the fan 22 is connected to the air outlet 212 of the air duct 21, so that the air in the air duct 21 is driven by the fan 22. The fan 22 drives the air in 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 air in the cleaning chamber 11 is drawn into the air duct 21 by the fan 22, heated by the heater 23, and then driven by the fan 22 to be discharged from the air duct 21 into the cleaning chamber 11, forming an internal circulation.

[0132] In this embodiment, the fan 22 can be installed on the top wall 12 of the inner liner 1, the fan 22 can be installed between the water retaining cover 24 and the air inlet 211 of the air duct 21, and the fan 22 can be connected to the top wall 12 of the inner liner 1 by snap connection, threaded connection or welding.

[0133] The fan 22 can be installed on the top wall 12 of the inner tank 1 and can have the following structure:

[0134] In this embodiment, the fan 22 can be installed above the top wall 12 of the inner container 1 , or can be installed below the top wall 12 of the inner container 1 .

[0135] In this structure, at least a portion of the air duct 21 is located above the top wall 12 of the inner liner 1 and outside the side wall 13. The air inlet 211 is located above the top wall 12 of the inner liner 1, and the air outlet 212 is located on the side wall 13 of the inner liner 1. At least a portion of the air duct 21 is bent, and the bending angle of the air duct 21 can be determined based on the angle between the top wall 12 and the side wall 13 of the inner liner 1. For example, the bending angle can be 90° to connect the air outlet 212 and the air inlet 211 located on different surfaces.

[0136] By arranging the air duct 21 outside the inner container 1 , the inner space of the cleaning chamber 11 is not encroached upon, thereby increasing the capacity of the cleaning chamber 11 .

[0137] 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.

[0138] 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.

[0139] 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 achieving a better drying effect.

[0140] The fan 22 can be connected to the air inlet 211 of the air duct 21, so that when the fan 22 is turned on, the gas in the cleaning chamber 11 is drawn into the air duct 21. The fan 22 can be a centrifugal air supply device, an exhaust fan or a ventilation air supply device, etc., which can drive the flow of gas.

[0141] The heater 23 can heat the gas flowing through the air duct 21 by electromagnetic heating, infrared heating, or resistance heating. The heater 23 using resistance heating can be a PTC (Positive Temperature Coefficient) heating device, a resistance wire heating device, or a resistance coil heating device.

[0142] When turned on, the heater 23 heats the gas flowing through the air duct 21. The heater 23 can be installed inside the air duct 21 to perform 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 by heating the pipe wall of the air duct 21.

[0143] Among them, the water retaining cover 24 has ventilation and water retaining functions, as shown in Figures 8 and 9, the water retaining cover 24 can be arranged between the fan 22 and the cleaning chamber 11, and the water retaining cover 24 is located in the cleaning chamber 11. The water retaining cover 24 can be connected to the air inlet 211 of the air duct 21 by threaded connection, plug-in connection, pivot connection or snap connection.

[0144] When the fan 22 is turned on, the fan 22 can draw the gas in the cleaning chamber 11 into the fan 22 installation position through the water retaining cover 24. At the same time, the water retaining cover 24 can reduce the direct impact and splashing of water flow on the internal circulation components 2 such as the air duct 21, the fan 22 and the heater 23, thereby playing a protective role.

[0145] In this embodiment, the projection S1 of the inlet of the fan 22 on the top wall 12 of the inner liner 1, the projection S2 of the air inlet 211 on the top wall 12 of the inner liner 1, and the projection S3 of the water retaining cover 24 on the top wall 12 of the inner liner 1 have the relationship shown in Figure 4. The projection S1 of the inlet of the fan 22 on the top wall 12 of the inner liner 1 and the projection S2 of the air inlet 211 on the top wall 12 of the inner liner 1 partially or completely overlap, thereby increasing the suction area of ​​the fan 22, accelerating air circulation, increasing the circulating air volume entering the air duct 21, and improving drying efficiency.

[0146] Among them, when the projection S1 of the inlet of the fan 22 on the top wall 12 of the inner liner 1 partially overlaps with the projection S2 of the air inlet 211 on the top wall 12 of the inner liner 1, the larger the overlapping area of ​​the projection S1 of the inlet of the fan 22 on the top wall 12 of the inner liner 1 and the projection S2 of the air inlet 211 on the top wall 12 of the inner liner 1, the larger the suction area of ​​the fan 22.

[0147] The projection S3 of the water retaining cover 24 on the top wall 12 of the inner liner 1 is greater than or equal to the projection S2 of the air inlet 211 on the top wall 12 of the inner liner 1, so that the projection S3 of the water retaining cover 24 on the top wall 12 of the inner liner 1 completely covers the projection S2 of the air inlet 211 on the top wall 12 of the inner liner 1, so as to reduce the amount of water directly rushing into the interior of the fan 22 from the inlet of the fan 22 when the cleaning equipment is in cleaning mode, so that the water flow will not directly impact the fan 22, thereby improving the working reliability of the internal circulation components 2 such as the fan 22 and the heater 23.

[0148] According to the cleaning device provided in the embodiment of the present application, on the one hand, by providing an internal circulation component 2 such as an air duct 21, a fan 22, and a heater 23, the air inlet 211 and the air outlet 212 of the air duct 21 are both connected to 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. The dry gas in the cleaning chamber 11 is circulated and heated by the heater 23 to achieve hot air drying of the dishes in the cleaning chamber 11. Compared with cleaning devices that perform hot air drying through external circulation, the internal circulation drying mode improves the utilization rate of the hot air thermal energy, reduces the energy consumption of the cleaning device in the hot air drying mode, and achieves energy saving. On the other hand, by setting the relationship between the projection S1 of the inlet of the fan 22 on the top wall 12 of the inner liner 1, the projection S2 of the air inlet 211 on the top wall 12 of the inner liner 1, and the projection S3 of the water retaining cover 24 on the top wall 12 of the inner liner 1, the suction area of ​​the fan 22 can be increased, the drying efficiency can be improved, and the amount of water directly rushing into the interior of the fan 22 from the inlet of the fan 22 can be reduced when the cleaning equipment is in cleaning mode, thereby improving the working reliability of the internal circulation components 2 such as the fan 22 and the heater 23.

[0149] In some embodiments, the area of ​​the intersection of the projection S1 of the inlet of the fan 22 on the top wall 12 of the inner liner 1 and the projection S2 of the air inlet 211 of the air duct 21 on the top wall 12 of the inner liner 1 is not less than 1 / 2 of the projection S1 of the inlet of the fan 22 on the top wall 12 of the inner liner 1.

[0150] In this embodiment, the area of ​​the intersection of the projection S1 of the inlet of the fan 22 on the top wall 12 of the inner liner 1 and the projection S2 of the air inlet 211 of the air duct 21 on the top wall 12 of the inner liner 1 satisfies: S1∩S2≥1 / 2*S1. For example, the intersection of S1 and S2 can be equal to 0.5S1, 0.7S1 or S1, so as to increase the suction area of ​​the fan 22, accelerate air circulation, increase the circulating air volume entering the air duct 21, and improve the drying efficiency.

[0151] In some embodiments, the projection S3 of the water retaining cover 24 on the top wall 12 of the inner liner 1 is larger than the projection S2 of the air inlet 211 of the air duct 21 on the top wall 12 of the inner liner 1, that is, the projection S2 of the air inlet 211 on the top wall 12 of the inner liner 1 is located within the projection S3 of the water retaining cover 24 on the top wall 12 of the inner liner 1, so that the projection of the water retaining cover 24 on the top wall 12 of the inner liner 1 completely covers the projection of the air inlet 211 on the top wall 12 of the inner liner 1, so as to further reduce the amount of water directly rushing into the interior of the fan 22 from the inlet of the fan 22 when the cleaning equipment is in cleaning mode, thereby improving the working reliability of the internal circulation components 2 such as the fan 22 and the heater 23.

[0152] In some embodiments, a ratio of a projection S3 of the water retaining cover 24 on the top wall 12 of the inner container 1 to a projection S2 of the air inlet 211 of the air duct 21 on the top wall 12 of the inner container 1 is not less than 1.1.

[0153] Among them, the projection S3 of the water retaining cover 24 on the top wall 12 of the inner liner 1 and the projection S2 of the air inlet 211 of the air duct 21 on the top wall 12 of the inner liner 1 meet: S3 / S2≥1.1, S3 / S2 can be 1.1, 2 or 4, etc., which is set according to the actual application scenario.

[0154] In some embodiments, the air inlet 211 of the air duct 21 is located on the top wall 12 of the cleaning chamber 11 , and the air outlet 212 of the air duct 21 is located on the lower side of the cleaning chamber 11 .

[0155] The air inlet 211 of the air duct 21 may be located at the center of the top wall 12 of the cleaning chamber 11 or near the edge of the top wall 12 of the cleaning chamber 11 , and the air outlet 212 of the air duct 21 may be located at the lower part of the adjacent side surface near the bottom surface.

[0156] In the cleaning chamber 11, the air flow circulates upward from a position near the bottom of the cleaning chamber 11. On the one hand, the uniformity of the temperature distribution in the cleaning chamber 11 can be improved through the flow direction of the air flow, which is beneficial to drying the entire chamber and reducing drying dead corners; on the other hand, it can reduce the water vapor from entering the air duct 21, the fan 22 and the heater 23 through the air inlet 211, thereby protecting them.

[0157] In some embodiments, as shown in Figure 17, the cleaning chamber 11 has a first side surface 111 and a second side surface 112 arranged opposite to each other, the air outlet 212 of the air duct 21 is located on the second side surface 112, and the distance from the center of the air inlet 211 of the air duct 21 to the second side surface 112 is smaller than the distance from the center of the air inlet 211 to the first side surface 111.

[0158] In this embodiment, as shown in Figure 12, the exhaust component 4 can be installed on the first side 111, and the exhaust component 4 and the air outlet 212 are respectively located on the first side 111 and the second side 112 which are relatively set, and the air inlet 211 is located near the second side 112 where the air outlet 212 is located, that is, the air inlet 211 is away from the exhaust component 4.

[0159] By arranging the exhaust component 4 and the air outlet 212 on opposite sides and arranging the air inlet 211 away from the exhaust component 4, when the exhaust component 4 and the fan 22 are working at the same time, the flow path of the gas heated by the heater 23 in the cleaning chamber 11 can be extended, thereby improving the utilization efficiency of the hot air thermal energy, reducing the energy consumption of the hot air drying working mode of the cleaning equipment, achieving energy saving, and at the same time improving the uniformity of the gas mixing in the cleaning chamber 11 and reducing drying dead corners.

[0160] In some embodiments, as shown in FIG. 1 , FIG. 8 and FIG. 12 , the air inlet 211 is disposed near the back plate 14 of the inner liner 1 , and the air outlet 212 of the air duct 21 includes multiple air outlets 212 disposed on the same side wall 13 of the inner liner 1 .

[0161] In this embodiment, the air inlet 211 can be located on the top wall 12 of the cleaning chamber 11 and close to the back panel 14, that is, the center of the air inlet 211 is located in the rear half of the entire cleaning device, which can reduce the impact of the air inlet 211 on the pushing and pulling of the bowl basket 5, thereby increasing the depth of the bowl basket 5 and improving the capacity of the bowl basket 5.

[0162] In some embodiments, as shown in FIG. 17 , 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 .

[0163] 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.

[0164] Among them, the air outlet 21 of the air duct 21 can be provided with multiple air outlets 212, for example, the number of air outlets 212 of the air duct 21 can be 2, 3 or more, and the air outlets 212 of multiple air ducts 21 are arranged on the same side of the cleaning chamber 11. The air outlets 212 of multiple air ducts 21 can be distributed at intervals along the same side of the cleaning chamber 11 to increase the air outlet area of ​​the air duct 21, so as to improve the uniform distribution of temperature in the cleaning chamber 11, which is conducive to drying the entire chamber and reducing drying dead corners.

[0165] Among them, the air outlets 212 of multiple air ducts 21 are arranged on the same side of the cleaning chamber 11, so that the gas heated by the heater 23 in the air duct 21 can be discharged into the cleaning chamber 11 from the air outlet 212 of the air duct 21 in the same direction, and discharged from the air inlet 211 of the air duct 21 in the same direction, which is conducive to forming an internal circulation of the gas and improving the drying rate.

[0166] In some embodiments, as shown in Figures 1 and 2, the air duct 21 also has a make-up air inlet 2131, which is connected to the outside world; as shown in Figures 6 and 7, the air duct 21 is provided with a valve 26, which is configured to close the make-up air inlet 2131 under normal circumstances and open under the action of pressure difference.

[0167] The air duct 21 is provided with a valve 26 , which can control the connection and disconnection of the external circulation flow path according to the pressure difference between the cleaning chamber 11 and the outside.

[0168] In this embodiment, the valve 26 is used to disconnect the external circulation between the supply air inlet 2131 and the air outlet 212 under normal conditions, so as to reduce the leakage of water vapor in the cleaning chamber 11 through the air duct 21 to the outside under normal conditions, thereby reducing the condensation water between the inner tank 1 and the outer shell of the cleaning equipment, and reducing corrosion pollution; the valve 26 is used to open under the action of the pressure difference to connect the external circulation between the supply air inlet 2131 and the air outlet 212. At this time, the supply air inlet 2131 inhales outside air, and the air pressure balance in the cleaning chamber 11 can be maintained through the supply air branch 213, reducing the vacuum degree in the cleaning chamber 11, so as to maintain a higher exhaust rate, quickly discharge the water vapor in the cleaning chamber 11, improve the overall dehumidification rate and drying rate of the cleaning equipment, and further reduce the energy consumption of hot air drying.

[0169] The valve 26 can be arranged between the air supply inlet 2131 and the air outlet 212, or can be arranged at the air supply inlet 2131. The valve 26 can be a fluid valve such as a gate valve, a stop valve or a butterfly valve.

[0170] In some embodiments, as shown in Figures 8 and 9, the fan 22 is installed above the top wall 12 of the inner liner 1. As shown in Figures 6 and 7, the air duct 21 includes: a main air duct 216 and an air supply branch 213, the air supply branch 213 is located between the main air duct 216 and the top wall 12 of the inner liner 1, and the valve 26 is installed on the wall between the air supply branch 213 and the main air duct 216; the valve 26 includes a damper 261 that can be pivotally installed on the wall between the air supply branch 213 and the main air duct 216, the first part 2611 of the damper 261 is located in the air supply branch 213, and the second part 2612 of the damper 261 is located in the main air duct 216, and the damper 261 is configured to block the air supply branch 213 under the action of gravity and open when the fan 22 is turned on.

[0171] Among them, the valve 26 can be connected between the supply air branch 213 and the main air duct 216 through pivot rotation, or can be connected between the supply air branch 213 and the main air duct 216 through elastic parts such as springs. The valve 26 can act on the supply air branch 213 and the main air duct 216 by pressure to open or close the supply air branch 213.

[0172] Among them, the damper 261 can be a baffle with an adjustable opening angle, and the air flow rate is controlled by adjusting the opening angle of the baffle. The area of ​​the damper 261 is not less than the ventilation area of ​​the air supply inlet 2131 and the air inlet 211.

[0173] In this embodiment, the damper 261 can be a baffle structure, and the damper 261 can rotate around a pivot. The first part 2611 of the damper 261 extends into the supply air branch 213, and the area of ​​the first part 2611 of the damper 261 extending into the supply air branch 213 matches the area of ​​the cross section of the supply air branch 213. The second part 2612 of the damper 261 extends into the main air duct 216, and the area of ​​the second part 2612 of the damper 261 extending into the main air duct 216 is smaller than the cross section of the main air duct 216.

[0174] When the fan 22 is not working, the damper 261 becomes vertical due to gravity. At this time, the first part 2611 of the damper 261 closes the air supply branch 213 to reduce steam leakage during the cleaning process; when the fan 22 is working and the entire system is in the drying process or storage and preservation process, the second part 2612 of the damper 261 rotates under the suction of the fan 22, and the damper 261 rotates until it becomes parallel. At this time, the damper 261 opens the air supply branch 213, and the cleaning equipment presents an internal and external double circulation state.

[0175] By setting up a damper 261 that can be pivotally mounted on the wall between the air supply branch 213 and the main air duct 216, the pressure difference can be used to drive the damper 261 to rotate, thereby realizing various working states of the cleaning equipment without the need for external energy, and the structure is simple and energy-saving.

[0176] The air duct 21 has at least the following two structural forms:

[0177] First, the air duct 21 includes: a first branch 2151 and a second branch 2152. The upper ends of the first branch 2151 and the second branch 2152 are both connected to the outlet of the fan 22. The lower ends of the first branch 2151 and the second branch 2152 are each formed with an air outlet 212, and the lower end of the first branch 2151 is close to the front end opening 15 of the inner tank 1, and the lower end of the second branch 2152 is close to the back panel 14 of the inner tank 1. The length of the first branch 2151 is greater than the length of the second branch 2152.

[0178] Among them, the air duct 21 includes an air inlet 211 and two air outlets 212 connected to the cleaning chamber 11. The two air outlets 212 are spaced apart along the front and rear directions of the cleaning chamber 11, and the length of the first branch 2151 is greater than the length of the second branch 2152. The gas in the cleaning chamber 11 is sucked into the air inlet 211 of the air duct 21 by the fan 22 from the top wall 12 of the cleaning chamber 11, and then driven by the fan 22 along the air duct 21 to turn to the lower half of the air duct 21 located on the side of the cleaning chamber 11. After being heated by the heater 23, it is discharged from the front and rear air outlets 212 of the air duct 21 in the lower half of the air duct 21.

[0179] In this embodiment, in order to connect the air inlet 211 of the air duct 21 located on the top wall 12 of the cleaning chamber 11 and the air outlet 212 located on the side of the cleaning chamber 11, the air duct 21 is bent 90°, and the gas in the cleaning chamber 11 is driven by the fan 22 and directly turned 90° from the top wall 12 of the cleaning chamber 11 to the side of the cleaning chamber 11. A large amount of airflow is offset toward the front side of the air duct 21. The length of the first branch 2151 is set to be greater than the length of the second branch 2152, so that the air volume of the front and rear air outlets 212 of the first branch 2151 and the second branch 2152 can be made basically equal, thereby further improving the uniform distribution of the circulating heating temperature in the cleaning chamber 11.

[0180] The air duct 21 is "Y"-shaped, and the upper end of the first branch 2151 and the upper end of the second branch 2152 share the main air duct 216 of the air duct 21. In this embodiment, the lengths of the upper ends of the first branch 2151 and the second branch 2152 can be the same, and the length of the lower end of the first branch 2151 is greater than the length of the lower end of the second branch 2152.

[0181] Among them, the internal circulation components 2 such as the fan 22 and the heater 23 can be located at the upper end of the first branch 2151 and the upper end of the second branch 2152, so that one fan 22 can be used to drive the gas flow of the first branch 2151 and the second branch 2152, and one heater 23 can be used to heat the gas flowing through the first branch 2151 and the second branch 2152, thereby reducing costs. Multiple air outlets 212 can improve the uniform flow of airflow in the cleaning chamber 11, improve the uniformity of temperature and humidity, and reduce drying dead corners.

[0182] In some embodiments, the upper end of the first branch 2151 and the upper end of the second branch 2152 are independent, and the first branch 2151 and the second branch 2152 are both installed with internal circulation components 2 such as a fan 22 and a heater 23 to increase the internal circulation rate of the gas and improve the drying speed.

[0183] In some embodiments, the air duct 21 also includes: a main air duct 216, a first branch 2151 and a second branch 2152, the first end of the main air duct 216 is formed with an air inlet 211, 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, the second ends of the first branch 2151 and the second branch 2152 are respectively formed with a first air outlet and a second air outlet, the air inlet 211, the first air outlet and the second air outlet are all connected to the cleaning chamber 11; the air supply branch 213 is arranged side by side with the main air duct 216.

[0184] In this embodiment, the air inlet 211, the first outlet, and the second outlet of the air duct 21 can be located on the same wall surface of the inner liner 1, or on different walls of the inner liner 1, depending on the specific usage scenario. The ventilation area of ​​the air inlet 211, the first outlet, and the second outlet of the air duct 21 can be set according to the specific usage scenario.

[0185] 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 drying dead corners can be reduced.

[0186] Among them, the main air duct 216, the first branch 2151 and the second branch 2152 form a "Y"-shaped air duct 21, and 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, and are set according to the actual usage scenario.

[0187] 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 the side of the main air duct 216 close to the front end opening 15 of the inner liner 1, or it can be located on the side of the main air duct 216 close to the back panel 14 of the inner liner 1, thereby improving the integration of the cleaning equipment, not encroaching on the length direction of the cleaning equipment, and increasing the capacity of the cleaning chamber 11.

[0188] 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 that one fan 22 can be used to drive the gas flow of the first branch 2151 and the second branch 2152, and one heater 23 can be used to heat the gas flowing through the first branch 2151 and the second branch 2152, thereby reducing costs. At the same time, multiple air outlets 212 can improve the uniform flow of airflow in the cleaning chamber 11, improve the uniformity of temperature and humidity, and reduce drying dead corners.

[0189] In some embodiments, as shown in FIG. 1 and FIG. 10 , the first branch 2151 extends obliquely forward and downward from the first end to the second end, and the supplementary air inlet 2131 faces the upper side wall 13 of the first branch 2151 .

[0190] In this embodiment, the first branch 2151 forms an angle with the main air duct 216, and the supply air inlet 2131 faces the upper side wall 13 of the first branch 2151, that is, the supply air 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 equipment, not encroaching on the length direction of the cleaning equipment, and increasing the capacity of the cleaning chamber 11.

[0191] As shown in Figures 1 and 10, the first air outlet and the second air outlet can be spaced apart along the front-to-back direction of the cleaning chamber 11, the first branch 2151 extends obliquely along the front-to-back direction of the inner tank 1, the second branch 2152 can extend obliquely rearward and downward along the front-to-back direction of the inner tank 1, and the second branch 2152 can also extend downward along the height direction of the inner tank 1.

[0192] By distributing the center of the first air outlet and the center of the second air outlet at intervals along the front-to-back direction of the cleaning chamber 11, the air outlets 212 of the air duct 21 can be provided in both the front and rear halves of the cleaning chamber 11, thereby balancing the humidity and temperature in the front and rear halves of the cleaning chamber 11, thereby further improving the uniform distribution of the circulating heating temperature in the cleaning chamber 11.

[0193] In some embodiments, as shown in FIG10 , the airflow of the main air duct 216 flows obliquely toward the front, the first branch 2151 is located in front of the second branch 2152 , and the length of the first branch 2151 on the front side is greater than that of the second branch 2152 .

[0194] Among them, the air duct 21 includes an air inlet 211 and two air outlets 212 connected to the cleaning chamber 11. The first air outlet and the second air outlet are spaced apart along the front and rear directions of the cleaning chamber 11, and the length of the first branch 2151 is greater than the length of the second branch 2152. The gas in the cleaning chamber 11 is sucked into the air inlet 211 of the air duct 21 by the fan 22 from the top wall 12 of the cleaning chamber 11, and then driven by the fan 22 along the air duct 21 to turn to the lower half of the air duct 21 located on the side of the cleaning chamber 11. After being heated by the heater 23, it is discharged from the front and rear air outlets 212 of the air duct 21 in the lower half of the air duct 21.

[0195] In this embodiment, since the impeller 222 of the fan 22 rotates to draw air, the air flow entering the main air duct 216 flows obliquely toward the front side. The length of the first branch 2151 is set to be greater than the length of the second branch 2152. The air volume of the front and rear air outlets 212 of the first branch 2151 and the second branch 2152 can be made basically equal, thereby further improving the uniform distribution of the circulating heating temperature in the cleaning chamber 11.

[0196] In some embodiments, as shown in Figures 12 and 13, the lower end of the first branch 2151 and the lower end of the second branch 2152 can be located in the middle or lower position of the cleaning chamber 11, that is, the two air outlets 212 of the air duct 21 can be located in the middle or lower position of the cleaning chamber 11. This fan 22 and outlet position improve the uniformity of temperature distribution in the cleaning chamber 11 during the internal circulation process of the cleaning equipment, which is conducive to drying the entire chamber and reducing drying dead corners.

[0197] 14 and 15 , the air duct 21 includes a down duct 215 , a plurality of air outlets 212 are formed at the lower end of the down duct 215 , the width of the down duct 215 along the front-to-back direction gradually increases from top to bottom, and the thickness of the down duct 215 along the left-to-right direction gradually decreases from top to bottom.

[0198] In this embodiment, the width of the downwind duct 215 along the front-to-back direction gradually increases from top to bottom, which can increase the number of air outlets 212 and increase the air outlet coverage of the air duct 21 to improve the uniform temperature distribution in the cleaning chamber 11, which is beneficial to drying the entire chamber and reducing drying dead corners; the thickness of the downwind duct 215 along the left-to-right direction gradually decreases from top to bottom, which can increase the air outlet speed by narrowing the flow cross-sectional area, and has a downward trend after outlet, which helps to improve the overall drying effect, especially improve the drying effect at the bottom of the cleaning chamber 11.

[0199] The number of the air outlets 212 is proportional to the width of the downwind duct 215 along the front-to-back direction. The plurality of air outlets 212 can improve the uniform flow of air in the cleaning chamber 11 and improve the uniformity of temperature and humidity.

[0200] In some embodiments, as shown in FIG. 16 , the downwind duct 215 is provided with a plurality of guide members 2153 spaced apart in the front-to-rear direction, and the plurality of air outlets 212 are spaced apart in the front-to-rear direction to evenly distribute the air volume at the positions of the plurality of air outlets 212 .

[0201] In this embodiment, the air outlet 212 of the downwind duct 215 is located at the lower side of the cleaning device, and the air tends to flow downward after being discharged, and can be fully circulated along the bottom side of the lower basket 5 along the wall of the cleaning chamber 11, which helps to improve the overall drying effect, especially the drying effect of the bottom of the cleaning chamber 11.

[0202] In some embodiments, the air inlet 211 and the air outlet 212 of the air duct 21 are both provided with a sealing device 25 and a nut. The nut is tightened and compressed in the form of a snap-on seal to compress the sealing device 25. The sealing device 25 is located between the air duct 21 and the inner tank 1 to reduce the water in the cleaning chamber 11 from leaking from the gap between the air duct 21 and the inner tank 1, thereby reducing the risk of water leakage and improving the reliability of the cleaning equipment.

[0203] In some embodiments, as shown in FIG. 2 , FIG. 6 and FIG. 7 , the air duct 21 further has a supplementary air inlet 2131 , which is in communication with the outside and with the inlet of the fan 22 .

[0204] The air supply inlet 2131 of the air duct 21 is connected to the outside world, and the external gas is drawn into the air duct 21 by the fan 22. The external 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 it 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.

[0205] By providing the air inlet 211 , the air supply inlet 2131 and the air outlet 212 of the air duct 21 , external circulation and / or internal circulation of the cleaning chamber 11 can be achieved, thereby realizing multiple working modes of the cleaning device.

[0206] When only the fan 22 is working, in order to maintain the pressure balance in the cleaning chamber 11, the fan 22 will only absorb the air in the cleaning chamber 11 as much as possible to achieve basic internal circulation. At this time, the air volume of the internal circulation is much larger than the air volume of the external circulation, thereby achieving the effect of quickly increasing the temperature and humidity in the cleaning chamber 11; when the fan 22 and the exhaust component 4 are working at the same time, the exhaust component 4 extracts and discharges the air in the cleaning chamber 11. At this time, the fan 22 will mainly introduce outside air, and a small amount of air in the cavity is sucked in for circulation. At this time, the internal and external circulation are carried out simultaneously, which can effectively improve the rapid dehumidification requirements in the dehumidification stage.

[0207] In the related art, the single internal circulation scheme helps to circulate and heat the gas to be dried in the cleaning chamber 11 and reach a suitable temperature, but the single internal circulation scheme also requires the exhaust component 4 to gradually discharge the evaporated water vapor. During the discharge stage, there is a lack of introduction of external gas, and the exhaust component 4 will gradually draw the cleaning chamber 11 into a negative pressure. The negative pressure causes the exhaust rate to gradually decrease, resulting in the overall dehumidification rate of the cleaning equipment not being well improved.

[0208] The present application sets up an air supply inlet 2131 of the air duct 21 connected to the outside world. When the exhaust component 4 is working, the air supply inlet 2131 can maintain the air pressure balance in the cleaning chamber 11 and reduce the vacuum degree in the cleaning chamber 11, thereby maintaining a high exhaust rate, quickly discharging water vapor in the cleaning chamber 11, improving the overall dehumidification rate and drying rate of the cleaning equipment, and further reducing the energy consumption of hot air drying.

[0209] In this embodiment, the air inlet 211, the supplementary air inlet 2131, and the air outlet 212 can be located on the same wall of the inner liner 1 or on different walls of the inner liner 1, depending on the specific usage scenario. The number and ventilation area of ​​the air inlet 211, the supplementary air inlet 2131, and the air outlet 212 of the air duct 21 can be set according to the specific usage scenario.

[0210] The fan 22 is connected to the air inlet 211 and the air supply inlet 2131 of the air duct 21, so that when the fan 22 is turned on, the gas in the cleaning chamber 11 and / or the external gas is drawn into the air duct 21, and when the fan 22 is driven, the gas is discharged from the outlet of the fan 22 into the air outlet 212 of the air duct 21 and then discharged into the cleaning chamber 11.

[0211] In this embodiment, by setting the air supply inlet 2131 of the air duct 21 to be connected to the outside world, the air pressure balance in the cleaning chamber 11 can be maintained through the air supply inlet 2131 when the exhaust component 4 is working, and the vacuum degree in the cleaning chamber 11 can be reduced, so that a high exhaust rate can be maintained, and the water vapor in the cleaning chamber 11 can be quickly discharged, thereby improving the overall dehumidification rate and drying rate of the cleaning equipment, and further reducing the energy consumption of hot air drying.

[0212] 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 communicates with the outside world, while the air outlet of the air supply branch 213 communicates with the clean chamber 11. The air supply branch 213 forms the external circulation branch for the clean chamber 11. The branch with the air inlet 211 and the air outlet 212 communicating with the clean chamber 11 constitutes the internal circulation branch. In Figure 11, hollow arrows indicate external circulation, and solid arrows indicate internal circulation.

[0213] 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.

[0214] 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.

[0215] When only the fan 22 is working, in order to maintain the pressure balance in the cleaning chamber 11, the fan 22 will only absorb the air in the cleaning chamber 11 as much as possible to achieve basic internal circulation. At this time, the air volume of the internal circulation is much larger than the air volume of the external circulation, thereby achieving the effect of quickly increasing the temperature and humidity in the cleaning chamber 11; when the fan 22 and the exhaust component 4 are working at the same time, the exhaust component 4 extracts and discharges the air in the cleaning chamber 11. At this time, the fan 22 will mainly introduce outside air, and a small amount of air in the cavity is sucked in for circulation. At this time, the internal and external circulation are carried out simultaneously, which can effectively improve the rapid dehumidification requirements in the dehumidification stage.

[0216] Among them, when the exhaust component 4 and the fan 22 are working, the exhaust volume of the exhaust component 4 is not less than the air supply volume of the air supply branch 213, that is, when the exhaust component 4 is turned on, the clean chamber 11 is pumped into normal pressure or negative pressure by the exhaust component 4. In other words, when the air supply branch 213 is supplying air, the clean chamber 11 is at normal pressure or negative pressure, and when the air supply branch 213 is not supplying air, the clean chamber 11 is at negative pressure.

[0217] In the related art, the single internal circulation scheme helps to circulate and heat the gas to be dried in the cleaning chamber 11 and reach a suitable temperature, but the single internal circulation scheme also requires the exhaust component 4 to gradually discharge the evaporated water vapor. During the discharge stage, there is a lack of introduction of external gas, and the exhaust component 4 will gradually draw the cleaning chamber 11 into a negative pressure. The negative pressure causes the exhaust rate to gradually decrease, resulting in the overall dehumidification rate of the cleaning equipment not being well improved.

[0218] By setting up an air supply branch 213, the present application can maintain the air pressure balance in the cleaning chamber 11 through the air supply branch 213 when the exhaust component 4 is working, reduce the vacuum degree in the cleaning chamber 11, thereby maintaining a high exhaust rate, quickly exhausting the water vapor in the cleaning chamber 11, improving the overall dehumidification rate and drying rate of the cleaning equipment, and further reducing the energy consumption of hot air drying.

[0219] In some embodiments, as shown in Figures 1 and 10, the fan 22 is installed above the top wall 12 of the inner liner 1, and the air duct 21 includes: an air supply branch 213, the air supply branch 213 extends from the top wall 12 of the inner liner 1 to the side of the inner liner 1, and the lower end of the air supply branch 213 forms an air supply inlet 2131 located on the side of the inner liner 1; when the exhaust component 4 and the fan 22 are working, the exhaust volume of the exhaust component 4 is not less than the air supply volume of the air supply branch 213.

[0220] The fan 22 is installed above the top wall 12 of the inner container 1 and does not occupy the inner space of the cleaning chamber 11 , thereby increasing the capacity of the cleaning chamber 11 .

[0221] 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.

[0222] 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.

[0223] 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.

[0224] In some embodiments, when the exhaust assembly 4 is working, the exhaust volume of the exhaust assembly 4 is not less than the volume of gas entering the cleaning chamber 11 from the outside.

[0225] 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 world. 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 world, the cleaning chamber 11 is in a normal pressure or negative pressure environment, and the negative pressure environment is helpful to improve the drying rate.

[0226] In this embodiment, when only the exhaust assembly 4 is working, due to the lack of sufficient external air supply, the cleaning chamber 11 is drawn into a negative pressure state by the exhaust assembly 4, which helps to improve the drying rate accordingly.

[0227] When the internal circulation component 2 and the exhaust component 4 work simultaneously, the fan 22 can circulate the air in the cleaning chamber 11, so that the temperature and humidity in the cleaning chamber 11 are evenly distributed, further improving the effect of uniform drying of the entire chamber.

[0228] In some embodiments, as shown in Figures 18 and 19, the cleaning device also includes: a side panel 3, a heater 23 installed in the area of ​​the air duct 21 located on the side of the inner tank 1, the side panel 3 installed on the side wall 13 of the inner tank 1, and the side panel 3 cover is arranged outside at least part of the air duct 21.

[0229] In this embodiment, the side panel 3 is installed outside the side wall 13 of the inner container 1 , and the inner side surface of the side panel 3 is spaced apart from the air duct 21 and the inner side surface of the side panel 3 is spaced apart from the heater 23 .

[0230] Among them, the heater 23 and at least part of the air duct 21 are located between the side panel 3 and the inner tank 1. The side panel 3 can protect the heater 23 and at least part of the air duct 21, and at the same time reduce the risk of people touching high-voltage components and high-temperature heating components, thereby improving safety.

[0231] In some embodiments, as shown in FIG19 , the inner side surface of the side panel 3 is spaced from the air duct 21 by a distance c, and the distance c satisfies: c≥2 mm.

[0232] The distance c between the inner side surface of the side panel 3 and the air duct 21 may be 2 mm, 4 mm, 7 mm or a wider distance.

[0233] In other words, the side panel 3 is installed on the outside of the side wall 13 of the inner container 1 , and the inner side surface of the side panel 3 is separated from the air duct 21 and the heater 23 .

[0234] It can be understood that a heater 23 is installed in the area of ​​the air duct 21 located on the side wall 13 of the inner tank 1. In some embodiments, the air duct 21 is also equipped with components such as a thermostat. The heating tube will generate a large amount of heat, and the heating tube and the thermostat both contain high-voltage terminals, which are directly connected to high voltage.

[0235] While ensuring grounding, by installing the side panel 3 and setting the distance between the inner side surface of the side panel 3 and the air duct 21, on the one hand, the side panel 3 can be prevented from directly touching the strong electric and high-temperature heating components, thereby improving the safety of the cleaning equipment; on the other hand, the wall temperature of the outer side of the side panel 3 can be controlled within a safe range, reducing the risk of people being scalded by contact with the side wall 13. In the embedded installation of the cleaning equipment, the high temperature of the side panel 3 can be reduced to damage the inner wall of the installation cabinet.

[0236] In some embodiments, the power of the heater 23 is P, which satisfies: P≤500W.

[0237] The power P of the heater 23 may be 150W, 200W, 350W, 400W or 500W, and may be specifically limited according to usage.

[0238] In the related art, the cleaning equipment with external circulation hot air drying mode is limited in installation location, the size of the fan 22 and the power of the heater 23 are relatively small, and hot air drying can only be used as an auxiliary energy source, and high-temperature rinsing is the main energy source. Therefore, hand-washed dishes require a considerable amount of time for a single drying operation, which is inconvenient.

[0239] This application utilizes the internal circulation hot air drying mode, increases the power of the heater 23, and sets the power of the heater 23 to P. It can use hot air drying as the main energy source and convert high-temperature rinsing into an auxiliary energy source, significantly shortening the drying time of tableware and improving convenience.

[0240] In some embodiments, as shown in Figures 7 and 9, the fan 22 includes: an upper shell 221, an impeller 222 and a motor assembly. The motor assembly is dynamically coupled to the impeller 222. The upper shell 221 is connected to the air duct 21 to form a accommodating cavity, and the impeller 222 is installed in the accommodating cavity.

[0241] The air duct 21 includes a bottom shell, and a fan 22 installation position matching the size of the upper shell 221 is provided in the air duct 21. The upper shell 221 is connected to the bottom shell of the air duct 21 to form a accommodating cavity. The fan 22 can only retain the upper shell 221, the impeller 222 and the motor assembly. The bottom shell of the air duct 21 serves as the lower shell of the fan 22. Through 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.

[0242] In this embodiment, the fan 22 is installed above the top wall 12 of the inner tank 1. The fan 22 can only retain the upper shell 221, the impeller 222 and the motor assembly, omitting the original lower shell of the fan 22, reducing the overall size of the fan 22, and allowing a larger fan 22 to be installed in the same space. The lower shell of the fan 22 is replaced by the air duct 21, and the impeller 222 is directly installed in the air duct 21, thereby increasing the air inlet area of ​​the air inlet 211 and increasing the air intake volume.

[0243] In some embodiments, as shown in FIG9 , a sealing device 25 is provided between the fan 22 and the air duct 21 . The sealing device 25 may be a sealing ring, a tape, or a filling glue, etc., to seal the gap between the inner tank 1 of the cleaning equipment, the fan 22 and the air duct 21 .

[0244] At the same time, 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 seal is adopted in the middle. During the operation of the entire cleaning equipment, the inner tank 1 of the cleaning equipment, the fan 22 and the air duct 21 belong to a closed space, which can reduce the amount of water vapor leaking through the gap between the fan 22 and the air duct 21 at each stage, thereby reducing hidden dangers.

[0245] In some embodiments, as shown in Figure 2, the air inlet 211 and the air outlet 212 of the air duct 21 are both provided with a sealing device 25 and a nut. The nut is tightened and compressed in the form of a snap-on seal to compress the sealing device 25. The sealing device 25 is located between the air duct 21 and the inner tank 1 to reduce the water in the cleaning chamber 11 from leaking from the gap between the air duct 21 and the inner tank 1, thereby reducing the risk of water leakage and improving the reliability of the cleaning equipment.

[0246] In some embodiments, the air outlet 212 is provided with a grille 2156 .

[0247] Among them, the grille 2156 is used to guide the airflow. The grille 2156 can guide the airflow of the air outlet 212 into different directions. The guide 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.

[0248] For example, if the air inlet 211 of the air duct 21 is set on the top wall 12 of the cleaning chamber 11, the grille 2156 can appropriately guide the hot air in the downward direction of the cleaning chamber 11, thereby extending the flow path of the hot air in the cleaning chamber 11, increasing the area of ​​the gas heated by the heater 23 flowing through the entire cleaning chamber 11, and improving the full-chamber drying and dead-corner drying effects of the cleaning chamber 11.

[0249] For example, if 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 in the direction of the rear and lower side of the cleaning chamber 11, thereby extending the flow path of the hot air in the cleaning chamber 11, increasing the area of ​​the gas heated by the heater 23 flowing through the entire cleaning chamber 11, improving the full-chamber drying and dead-corner drying effects of the cleaning chamber 11, and reducing the amount of hot air discharged by the exhaust component 4 without being utilized, thereby increasing the utilization efficiency of the hot air thermal energy.

[0250] The grille 2156 can also reduce the direct impact of water flow on the air duct 21 and protect the air duct 21.

[0251] In some embodiments, the cleaning device has at least the following working modes:

[0252] First, the cleaning equipment has an internal circulation drying working mode.

[0253] In the internal circulation drying mode, the fan 22 and heater 23 operate, and the exhaust assembly 4 is deactivated. Air within the cleaning chamber 11 is drawn into the air duct 21 through the air inlet 211 of the air duct 21 by the fan 22. The hot air, heated by the heater 23, enters the cleaning chamber 11 through the air outlet 212 of the air duct 21. The air within the cleaning chamber 11 is circulated and heated, and the heat is evenly distributed. Cooler areas within the cleaning chamber 11 can evaporate and dry faster through heat transfer and convection, facilitating complete drying of the cleaning chamber 11 and reducing drying dead corners.

[0254] When the temperature and humidity in the cleaning chamber 11 are too low, the fan 22 and the heater 23 are turned on to achieve forced convection and circulating heating in the cleaning chamber 11 , thereby accelerating the evaporation of residual water in the cleaning chamber 22 .

[0255] Second, the cleaning equipment has a dehumidification negative pressure working mode;

[0256] In the dehumidification negative pressure working mode, the fan 22 and the heater 23 are stopped, and the exhaust assembly 4 is working. Due to the lack of external air supply, the cleaning chamber 11 is drawn into a negative pressure state by the exhaust assembly 4, which also helps to improve the drying rate.

[0257] Third, the cleaning equipment has a hybrid working mode;

[0258] In the mixed working mode, the fan 22, the heater 23 and the exhaust assembly 4 are all working. The fan 22 can circulate the air in the cleaning chamber 11, so that the temperature and humidity in the cleaning chamber 11 are evenly distributed, further improving the effect of uniform drying of the entire chamber.

[0259] Fourth, the cleaning equipment has a mixed dehumidification working mode;

[0260] In the mixed dehumidification working mode, the fan 22 and the exhaust assembly 4 are both working, and the heater 23 is stopped, so that the air in the cleaning chamber 11 is mixed and dehumidified at the same time, further improving the effect of uniform dehumidification of the entire chamber.

[0261] As shown in Figures 20 and 21, the cleaning device of the embodiment of the present application also includes an air duct structure, which includes: an upper air duct 214, a flexible connector 217 and a lower air duct 215.

[0262] 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; wherein the air inlet 211 and the air outlet 212 are not coplanar.

[0263] The air enters the duct structure from the air inlet 211 and flows sequentially through the upper duct 214, the flexible connector 217 and the lower duct 215 before exiting from the air outlet 212. The air inlet 211 of the duct structure is connected to the air inlet 41 of the fan 22.

[0264] Among them, the two 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 a detachable connection method such as plug-in connection, clamp connection or clamp connection.

[0265] The flexible connector 217 may be a connection structure with deformable properties, such as a flexible joint made of one or more materials selected from metal, plastic, and rubber.

[0266] By setting up a detachable connection 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 the upper air duct 214 and the lower air duct 215 combination of different types and sizes, and the 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 on the inner tank 1 of cleaning equipment of various heights.

[0267] In the related art, in order to extend the circulation path of the hot air in the hot air drying of the cleaning chamber 11, make full use of the thermal energy of the hot air, and improve the full-chamber drying and dead-corner drying effects of the cleaning chamber 11, the installation plane of the fan 22 and the internal circulation outlet of the cleaning chamber 11 are usually set 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 internal circulation outlet of the cleaning chamber 11 are located on different surfaces, tolerance and sealing problems will occur when the cleaning chamber 11 and the air duct structure are assembled, and the assembly difficulty and subsequent use effect are poor.

[0268] The air duct structure of the embodiment of the present application is configured with a split structure of an upper air duct 214 and a lower air duct 215, with a flexible connector 217 between the upper air duct 214 and the lower air duct 215, and the air inlet 211 of the air duct structure is not coplanar with the air outlet 212 of the air duct structure. It can be adapted to cleaning equipment in which the installation plane of the fan 22 and the internal circulation outlet of the cleaning chamber 11 are located on different surfaces. When assembled with the cleaning equipment, the tolerances generated during the production process of the inner liner 1 can be compensated by replacing the upper air duct 214 and the lower air duct 215 of different lengths and sizes, thereby reducing the difficulty of assembly. At the same time, it can be adapted to cleaning equipment of different heights, thereby improving the reliability and usage scenarios of use.

[0269] In some embodiments, as shown in Figure 22, the upper air duct 214 includes a horizontal section 2141 and a lower connecting 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 connecting section 2142.

[0270] Among them, the horizontal section 2141 and the lower connecting section 2142 are respectively located on different surfaces of the cleaning chamber 11. By setting the downwardly extending lower connecting section 2142, the upper air duct 214 can be distributed on different surfaces, thereby adapting to cleaning equipment in which the installation plane of the fan 22 and the internal circulation outlet of the cleaning chamber 11 are located on different surfaces.

[0271] In some embodiments, as shown in Figure 22, the upper surface of the upper air duct 214 has an opening for installing the fan 22; the flexible connector 217 includes a connected cover plate 2171 and a sleeve 2172, and the two ends of the sleeve 2172 are respectively connected to 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.

[0272] 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. The cover plate 2171 can be connected to the opening of the upper air duct 214 by plug-in connection, snap connection or bolt connection.

[0273] The sleeve 2172 may be a connecting tube made of rubber or plastic, and both ends of the sleeve 2172 are respectively connected to the lower port of the upper air duct 214 and the upper port of the lower air duct 215 .

[0274] In some embodiments, both ends of the sleeve 2172 are respectively connected to the connecting section and the upper port of the downwind duct 215, and at least a portion of the cover plate 2171 is connected to the horizontal section 2141 and closes the opening.

[0275] The cover plate 2171 and the sleeve 2172 have at least the following two structural forms:

[0276] First, the cover 2171 is completely located on the side of the fan 22 located in the cleaning chamber 11, and the cover 2171 can be completely connected to the horizontal section 2141 of the upper air duct 214, and at least part of the sleeve 2172 extends into the side of the fan 22 located in the cleaning chamber 11 and is connected to the cover 2171.

[0277] At least a portion of the sleeve 2172 is a flexible structure, so that one end of the sleeve 2172 can be bent and deformed toward one side of the clean chamber 11 where the upper port of the down duct 215 is located, and the other end can be bent and deformed toward the other side of the clean chamber 11 where the lower port of the up duct 214 is located, so that the sleeve 2172 can be socketed with the lower port of the up duct 214 and the upper port of the down duct 215.

[0278] Secondly, a portion of the cover plate 2171 covers the upper surface of the upper air duct 214 , and a portion of the cover plate 2171 covers the curved portion of the upper air duct 214 extending toward the side.

[0279] In this embodiment, a portion of the cover plate 2171 is located on a side of the fan 22 located in the cleaning chamber 11 , and another portion of the cover plate 2171 covers a curved portion of the upper air duct 214 extending laterally.

[0280] In this embodiment, at least a portion of the cover 2171 is a flexible structure, so that after the two ends of the sleeve 2172 are respectively connected to 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 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 close the opening.

[0281] In some embodiments, the two ends of the sleeve 2172 are interference fit with the lower port of the upper air duct 214 and the upper port of the lower air duct 215 respectively 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.

[0282] In some embodiments, as shown in FIG. 22 and FIG. 23 , 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 .

[0283] 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 bolt connection, snap connection or plug-in connection.

[0284] When the side wall 13 of the upper air duct 214 is connected to the cover plate 2171 by a plug-in connection, one of the first connection structure 2143 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. 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.

[0285] When the side wall 13 of the upper air duct 214 is connected to the cover plate 2171 by a 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, which is inserted into the fixed snap to lock the side wall 13 of the upper air duct 214 and the cover plate 2171 together.

[0286] In some embodiments, the first connecting structure 2143 cooperates with the second connecting structure 21711. Multiple first connecting structures 2143 can be provided, and the number of second connecting structures 21711 is adapted to the number of first connecting structures 2143 to increase the stability of the connection between the side wall 13 of the upper air duct 214 and the cover plate 2171.

[0287] In some embodiments, the upper cover 2171 is made of rubber, and the upper half of the upper cover 2171 can be bent to cover 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 panel, and aerodynamics generated by the fan 22, thereby effectively reducing the noise index during the operation of the cleaning equipment.

[0288] In some embodiments, as shown in Figure 21, the downwind duct 215 includes: a main body 2158 and a cover body 2157; the upper end of the main body 2158 is connected to the flexible connector 217, and the outer side surface of the main body 2158 is at least partially open and is provided with an air outlet 212; the cover body 2157 is connected to the main body 2158 and closes the open part of the outer side surface of the main shell, and the cover body 2157 is made of flexible material.

[0289] In this embodiment, the main body 2158 can be made of a lightweight material, such as hard plastic or metal; the cover 2157 is made of a flexible material, such as rubber or plastic.

[0290] The main body 2158 and the cover 2157 may be connected by means of plug-in connection, clamp connection or fixture connection, etc., to facilitate disassembly, assembly and replacement.

[0291] By configuring the downwind duct 215 to be composed of a main body 2158 of a hard material and a cover 2157 of a flexible material, a better sealing effect can be achieved. The downwind duct 215 as a whole can reduce the risk of air and water leakage, thereby improving the reliability of the duct structure.

[0292] In some embodiments, a sealing strip may be provided between the main body 2158 and the cover 2157 to further improve the sealing performance between the main body 2158 and the cover 2157 and improve the reliability of the air duct structure.

[0293] In some embodiments, as shown in FIG. 25 , the main body 2158 includes an upper connecting section 21581 and an air duct shell 21582 .

[0294] The lower end of the flexible connector 217 is sleeved on the upper connecting section 21581 ; the air duct shell 21582 is connected to the upper connecting section 21581 , the outer side of the air duct shell 21582 is open and has an air outlet 212 , and the cover 2157 is covered on the air duct shell 21582 .

[0295] The lower end of the flexible connector 217 and the upper connecting section 21581 may be interference fit to improve the sealing performance of the connection between the lower end of the flexible connector 217 and the upper connecting section 21581 .

[0296] In some embodiments, as shown in Figures 21 and 24, the outer wall of the upper connecting section 21581 is provided with a third connecting structure 21583, the lower end of the flexible connecting member 217 is provided with an avoidance hole 2173, the cover body 2157 is provided with a fourth connecting structure 21571, and the third connecting structure 21583 passes through the avoidance hole 2173 and is connected to the fourth connecting structure 21571.

[0297] The third connection structure 21583 and the fourth connection structure 21571 may be connected by a snap connection, a threaded connection or a plug-in connection.

[0298] The third connection structure 21583 passes through the avoidance hole 2173 to connect and fix the flexible connection member 217 and the upper connection section 21581. The third connection structure 21583 passes through the avoidance hole 2173 and is connected to the fourth connection structure 21571 to connect and fix the upper connection section 21581, the cover body 2157 and the flexible connection member 217.

[0299] When the third connecting structure 21583 and the fourth connecting structure 21571 are connected by a snap buckle, the third connecting structure 21583 can be a fixed snap buckle, and the fourth connecting structure 21571 can be a sliding snap buckle. 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 a part of the third connecting structure 21583 can extend from the avoidance hole 2173, so that the flexible connecting member 217 and the upper connecting section 21581 can be connected and fixed. The fourth connecting structure 21571 slides into the third connecting structure 21583 to connect and fix the upper connecting section 21581, the cover body 2157 and the flexible connecting member 217.

[0300] When the third connecting structure 21583 and the fourth connecting structure 21571 are connected by threads, the third connecting structure 21583 can be a protrusion with a threaded hole, and the fourth connecting structure 21571 can be a structure with connecting parts 2422 such as bolts, studs, and screws. When the lower end of the flexible connecting part 217 is sleeved on the upper connecting section 21581, the third connecting structure 21583 passes through the avoidance hole 2173, and the threaded hole of the third connecting structure 21583 can extend from the avoidance hole 2173, and the fourth connecting structure 21571 is threadedly connected to the third connecting structure 21583.

[0301] In some embodiments, as shown in FIG. 25 , the air duct housing 21582 is provided with a heater mounting position 21585 for mounting the heater 23 and a thermostat mounting position 21586 for mounting the thermostat 29 .

[0302] The heater mounting position 21585 is used to mount the heater 23. The heater 23 can be mounted on the mounting heater 23 by means of plug-in connection, threaded connection, or snap connection. The heater 23 is configured to heat the gas flowing through the downwind duct 215 when turned on.

[0303] Thermostat mounting position 21586 is used to install thermostat 29. Thermostat 29 can be installed in thermostat mounting position 21586 by plug-in connection, threaded connection, or snap connection. Thermostat 29 is used to detect the temperature in the downwind duct 215 and control the working state of the cleaning device according to the detected temperature result.

[0304] Among them, the heater installation position 21585 and the thermostat installation position 21586 are both located in the air duct shell 21582, that is, the heater 23 and the thermostat 29 are installed in the same space.

[0305] In some embodiments, as shown in FIG. 25 , the heater mounting position 21585 and the temperature controller mounting position 21586 are installed sequentially along the flow direction of the gas, so that the airflow is heated by the heater 23 and then measured by the temperature controller 29 .

[0306] By installing both the thermostat 29 and the heater 23 in the air duct shell 21582, the thermostat 29 can monitor the temperature inside the air duct shell 21582 in real time. In the event that the fan 22 suddenly stalls or is damaged, the thermostat 29 can detect the temperature abnormality in time and control the cleaning equipment to stop working, which can effectively reduce risks and improve the safety of the cleaning equipment.

[0307] In some embodiments, as shown in FIG21 , a vapor chamber 21584 is installed in the air duct housing 21582. The vapor chamber 21584 can be connected to the air duct housing 21582 via a threaded connection, a plug-in connection, or a snap-on connection. The vapor chamber 21584 can be a quartz heating plate, a ceramic heating plate, a metal heating element, or other components.

[0308] The vapor chamber 21584 is located within the duct housing 21582 on the side of the heater mounting position 21585 facing away from the inner tank 1. The vapor chamber 21584 is in direct contact with the interior of the duct housing 21582. Due to the excellent thermal conductivity of the vapor chamber 21584, localized high temperatures near the heater 23 can be quickly dissipated to the surrounding area, reducing the risk of localized high temperatures within the duct housing 21582. This also reduces the risk of damage to the human body or the cabinet after built-in installation due to excessive temperatures outside the duct housing 21582.

[0309] In some embodiments, as shown in Figure 26, the downwind duct 215 is provided with a heater installation position 21585, and an expansion section 2154 is provided between the inlet end of the downwind duct 215 and the heater installation position 21585. The flow area of ​​the expansion section 2154 gradually increases from the end close to the inlet end of the downwind duct 215 to the end close to the heater installation position 21585.

[0310] Among them, the downwind duct 215 includes a heater installation position 21585 and an inlet end of the downwind duct 215. The flow area of ​​the inlet end of the downwind duct 215 is smaller than the flow area of ​​the heater installation position 21585. The heater installation position 21585 is arranged on the rear side of the inlet end of the downwind duct 215, and the air flow flows from the inlet end of the downwind duct 215 to the heater installation position 21585.

[0311] Heater mounting position 21585 is used to mount heater 23, which, when turned on, is configured to heat the gas flowing through downwind duct 215. Fan 22 can be installed at or near the inlet of downwind duct 215 to draw gas from the inlet into downwind duct 215 and drive the gas along downwind duct 215 toward heater mounting position 21585.

[0312] In this embodiment, the expansion section 2154 can be axially symmetrical, or can be tilted on one side and vertical on the other side, or can be tilted on both sides but at different angles. The specific setting can be made according to the actual usage scenario.

[0313] According to the downwind duct 215 provided in the embodiment of the present application, an expansion section 2154 is provided between the inlet end of the downwind duct 215 and the heater installation position 21585, and the flow area of ​​the expansion section 2154 gradually increases from the end close to the inlet end of the downwind duct 215 to the end close to the heater installation position 21585. On the one hand, the speed of the airflow entering from the inlet end of the downwind duct 215 can be reduced, the contact time between the gas and the heater 23 can be prolonged, and the heating effect can be increased; on the other hand, the air volume can be blown more evenly to the surface of the heater 23, reducing the local high temperature phenomenon and improving the safety and reliability of the use of the downwind duct 215.

[0314] In some embodiments, as shown in FIG. 26 , the front side wall 13 of the expansion section 2154 is tilted forward from an end close to the inlet end of the downwind duct 215 to an end close to the heater mounting position 21585 .

[0315] 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 downwind duct 215 is smaller than the flow area of ​​the heater installation position 21585 below. After the airflow flows out from the outlet of the fan 22, the expansion of the flow area can reduce the wind speed and increase the pressure, so that the air volume is blown to the heater 23 more evenly, reducing the local high temperature that limits the power of the heater 23, and playing the role of expanding pressure and stabilizing flow.

[0316] In some embodiments, as shown in FIG. 26 , the front side wall 13 of the expansion section 2154 has an inclination angle γ with respect to the vertical direction, satisfying: 10°≤γ≤45°.

[0317] The inclination angle γ of the front side wall 13 of the expansion section 2154 to the vertical direction can be 10°, 20°, 30° or 45°, which can be set according to the actual usage scenario.

[0318] By setting the inclination angle range of the front side wall 13 of the expansion section 2154 and the vertical direction, the air volume can be better evenly distributed, which helps the air volume to evenly pass through the cross section of the heater 23 below, reducing local overheating and limiting the power of the heater 23.

[0319] In some embodiments, a thermostat installation position 21586 for installing the thermostat 29 is provided in the downwind duct 215 .

[0320] Thermostat mounting position 21586 is used to install thermostat 29. Thermostat 29 can be installed in thermostat mounting position 21586 by plug-in connection, threaded connection, or snap connection. Thermostat 29 is used to detect the temperature in the downwind duct 215 and control the working state of the cleaning device according to the detected temperature result.

[0321] By installing both the thermostat 29 and the heater 23 in the downwind duct 215, the thermostat 29 can monitor the temperature in the downwind duct 215 in real time. In the event that the fan 22 suddenly stalls or is damaged, the thermostat 29 can promptly detect the temperature anomaly and control the cleaning equipment to stop working, thereby effectively reducing risks and improving the safety of the cleaning equipment.

[0322] The thermostat installation position 21586 in the downwind duct 215 has at least the following two structures:

[0323] First, the expansion section 2154 is provided with a thermostat mounting position 21586 for mounting the thermostat 29 .

[0324] The thermostat mounting position 21586 may be disposed on any side wall 13 of the expansion section 2154 , for example, on the front side wall 13 or the rear side wall 13 of the expansion section 2154 .

[0325] In this embodiment, by setting the thermostat installation position 21586 between the inlet end of the downwind duct 215 and the heater installation position 21585, the thermostat 29 can detect the temperature of the gas that is not heated by the heater 23, and promptly control the cleaning equipment to stop working when the temperature is abnormal, thereby further reducing risks and improving the safety of the cleaning equipment.

[0326] In some embodiments, the front side wall 13 of the expansion section 2154 is provided with a thermostat mounting position 21586 for mounting the thermostat 29 .

[0327] In this embodiment, if the fan 22 suddenly stalls or is damaged, the hot air from the heater 23 floats up and quickly reaches the inclined position of the front side wall 13 of the expansion section 2154. At this time, the temperature there reaches the maximum. This thermostat installation position 21586 can effectively reduce safety issues.

[0328] Secondly, as shown in FIG27 , the downwind duct 215 is provided with a thermostat mounting position 21586 for mounting the thermostat 29 , and the thermostat mounting position 21586 and the heater mounting position 21585 are arranged side by side in the horizontal direction.

[0329] In this embodiment, the thermostat mounting position 21586 and the heater mounting position 21585 are arranged side by side in the horizontal direction. The thermostat 29 can directly detect the temperature of the heater 23 and promptly control the cleaning equipment to stop working when the temperature of the heater 23 is abnormal, thereby further reducing risks and improving the safety of the cleaning equipment.

[0330] In some embodiments, as shown in FIG27 , the downwind duct 215 further includes: an isolation plate 2155 ; the isolation plate 2155 is installed on the inner side of the thermostat installation position 21586 to isolate the thermostat 29 from the air flow channel of the downwind duct 215 , and the isolation plate 2155 is made of a thermally conductive insulating material.

[0331] The isolation plate 2155 can be made of a thermally conductive insulating material such as ceramic, graphene, mica, or silicone. The isolation plate 2155 can be connected to the inner side of the thermostat mounting position 21586 by a plug-in connection, a threaded connection, or a snap connection.

[0332] In this embodiment, by providing an isolation plate 2155 of heat-conducting insulating material, on the one hand, the thermostat 29 that needs to be connected to a strong current can be isolated from the air flow channel of the downwind duct 215, thereby avoiding contact between the thermostat 29 and the conductive water vapor in the downwind duct 215, strengthening insulation protection, and reducing safety hazards; on the other hand, the isolation plate 2155 has a heat-conducting effect, and can respond to 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 a temperature abnormality, thereby improving the safety of the cleaning equipment.

[0333] It is understandable that since the downwind duct 215 and the cleaning chamber 11 belong to the same enclosed space, the space is filled with a large amount of conductive water vapor, and the thermostat 29 needs to be connected to strong electricity. If the thermostat 29 is in direct contact with water vapor, there will be a safety hazard.

[0334] As shown in Figures 28 and 29, the cleaning equipment of the embodiment of the present application also includes an air duct 21, which includes: a fan installation position 2146, a first air guide section 2147 and a second air guide section 2149 connected in sequence, the fan installation position 2146 and the first air guide section 2147 are distributed in the same direction, and the first air guide section 2147 and the second air guide section 2149 are bent relative to each other; wherein, the first air guide section 2147 is provided with a volute tongue 2148, and the flow area at the volute tongue 2148 gradually increases from the end close to the fan installation position 2146 to the end close to the second air guide section 2149.

[0335] Among them, the fan mounting position 2146 is used to install the fan 22, and the fan mounting position 2146 and the first air guide section 2147 are located on the same surface of the cleaning chamber 11. For example, the fan mounting position 2146 and the first air guide section 2147 can both be located on the top surface of the cleaning chamber 11, or can both be located on the side of the cleaning chamber 11.

[0336] The first air guide section 2147 and the second air guide section 2149 are bent relative to each other. The first air guide section 2147 and the second air guide section 2149 are located on adjacent surfaces of the cleaning chamber 11. For example, the first air guide section 2147 is located on the top surface of the cleaning chamber 11, and the second air guide section 2149 is located on the side of the cleaning chamber 11; or, the first air guide section 2147 is located on the side of the cleaning chamber 11, and the second air guide section 2149 is located on the bottom surface of the cleaning chamber 11.

[0337] The relative bending angle between the first air guiding section 2147 and the second air guiding section 2149 can be 90°, 180° or other angles, which can be set according to the installation environment of the air duct 21.

[0338] The volute tongue 2148 is located on the side of the first air guide section 2147 near the fan mounting position 2146. The volute tongue 2148 is used to reduce the amount of gas circulating within the fan mounting position 2146. When the impeller 222 of the fan 22 rotates, the airflow entering the air inlet 211 passes near the volute tongue 2148, and the tongue of the volute tongue 2148 splits the airflow into two parts: the majority of the airflow flows along the fan mounting position 2146 into the first air guide section 2147; a small portion of the airflow flows back to the fan mounting position 2146 through the gap between the volute tongue 2148 and the impeller 222. After rotating one full revolution with the impeller 222 within the fan mounting position 2146, it returns to the volute tongue 2148 to participate in a new diversion.

[0339] It should be noted that the gas in the cleaning chamber 11 is sucked into the first air guide section 2147 by the fan 22 and immediately enters the second air guide section 2149. The direction of the gas in the cleaning chamber 11 is deflected when it moves from the first air guide section 2147 to the second air guide section 2149. The deflection angle is the same as the relative bending angle between the first air guide section 2147 and the second air guide section 2149. The deflection of the gas creates resistance to the gas flow, and backflow vortex phenomenon is prone to occur, which affects the overall working state, air volume and efficiency of the fan 22.

[0340] The air duct 21 provided in the embodiment of the present application is provided with a volute tongue 2148 in the first air guide section 2147, and the flow area at the volute tongue 2148 gradually increases from the end close to the fan installation position 2146 to the end close to the second air guide section 2149. It can reduce the influence of the backflow vortex caused by the deflection of the air flow when the direction of the air flow is deflected from the first air guide section 2147 to the second air guide section 2149. In addition, the expansion design of the first air guide section 2147 can significantly improve the uniformity of the wind speed at the outlet of the fan 22 and the maximum static pressure of the fan 22, thereby increasing the overall air volume in the air duct 21, and making the wind speed of the air flow reaching the surface of the heater 23 uniform, thereby improving the hot air drying effect of the cleaning equipment.

[0341] In some embodiments, the fan installation position 2146 and the first air guide section 2147 are distributed in the horizontal direction, and the second air guide section 2149 is distributed in the vertical direction.

[0342] The first air guiding section 2147 and the second air guiding section 2149 are bent relative to each other at an angle of 90° to accommodate cleaning equipment in which the installation plane of the fan 22 and the internal circulation outlet of the cleaning chamber 11 are located on different surfaces.

[0343] In some embodiments, the volute tongue 2148 includes an arc segment 21481 and a straight segment 21482, the arc segment 21481 protrudes toward the middle of the first air guide segment 2147, the first end of the straight segment 21482 is connected to the arc segment 21481, and the first end is connected to the wall of the first air guide segment 2147.

[0344] The arc segment 21481 is primarily used to guide the flow of air, allowing it to better enter the straight segment 21482 area while reducing turbulence and eddies. The straight segment 21482 is primarily used to smoothly guide the airflow from the arc segment 21481 into the second air guide segment 2149.

[0345] In some embodiments, as shown in FIG. 29 , the angle between the straight line segment 21482 and the central axis of the first air guide segment 2147 is θ, which satisfies the following: 5°≤θ≤60°.

[0346] Among them, the angle θ between the straight segment 21482 and the central axis of the first air-guiding segment 2147 can be 5°, 25°, 45° or 60°, which can be set according to the actual working environment.

[0347] In some embodiments, the straight segment 21482 is tangent to the arc segment 21481 so that the airflow of the arc segment 21481 can be smoothly introduced into the straight segment 21482 .

[0348] In some embodiments, as shown in FIG. 29 , the arc angle of the arc segment 21481 is δ, satisfying: 30°≤δ≤90°.

[0349] The arc angle δ of the arc segment 21481 can be 30°, 45°, 60° or 90°, and can be set according to the actual working environment.

[0350] By setting the curvature δ of the arc segment 21481, the gas can better enter the straight segment 21482 area, while reducing the turbulence and eddy current of the airflow.

[0351] In some embodiments, as shown in FIG. 29 , a vertical distance d4 from the center of the fan installation position 2146 to the straight line segment 21482 and a radius r of the fan installation position 2146 satisfy: d4≤3r.

[0352] Among them, the vertical distance d4 from the center of the fan installation position 2146 to the straight line segment 21482 can be a negative number, 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, which can be set according to the actual working environment.

[0353] 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 better enter the straight line segment 21482 area, while reducing the turbulence and vortex of the airflow.

[0354] In some embodiments, the volute tongue 2148 is spaced apart from the second air guide section 2149 to improve the flow characteristics of the gas, increase the efficiency of the diversion, and reduce the turbulence and eddy currents of the airflow. The distance between the volute tongue 2148 and the second air guide section 2149 needs to be calculated and adjusted according to actual needs.

[0355] In some embodiments, as shown in FIG. 29 , the air duct 21 is opened at the fan installation position 2146 to form a lower volute of the fan 22 .

[0356] In this embodiment, the fan installation position 2146 is open to facilitate the installation of the impeller 222 of the fan 22.

[0357] The fan 22 can only retain the upper shell 221, impeller 222 and motor assembly of the fan 22, and omit the original lower shell of the fan 22. In this way, the fan mounting position 2146 and the upper shell 221 of the fan 22 together constitute the fan 22 part, which reduces the overall size of the fan 22. A larger fan 22 can be installed in the same space, and the fan mounting position 2146 replaces the lower shell of the fan 22, and the impeller 222 is directly installed in the fan mounting position 2146, thereby increasing the air inlet area of ​​the air inlet 211 and increasing the air intake volume.

[0358] In some embodiments, as shown in Figures 30 and 31, the cleaning device provided in the embodiments of the present application also includes a water retaining structure. The first wall surface of the inner tank 1 of the cleaning device is provided with a mounting hole, and the water retaining structure includes: an air duct 21 and a water retaining cover 24.

[0359] As shown in Figures 31 and 32, the air inlet end 20 of the air duct 21 has a flange 201, which is suitable for extending into the inner tank 1 from the mounting hole; the water retaining cover 24 includes a connected water retaining plate 241 and a mounting structure 242, the mounting structure 242 is connected to the flange 201, and the projection of the water retaining plate 241 on the first wall covers the projection of the air inlet end 20 on the first wall, and an air inlet 211 is formed between the water retaining cover 24 and the flange 201.

[0360] The first wall of the inner container 1 of the cleaning device can be the top wall 12, side wall 13 or bottom wall 16 of the inner container 1, which can be set according to the installation scenario of the cleaning device. The mounting hole can be a through hole, and the mounting hole is used to install the air duct 21.

[0361] The air inlet end 20 of the air duct 21 has a flange 201, which is connected to the mounting hole. The flange 201 and the mounting hole can be connected by a snap connection, a knob connection or a threaded connection.

[0362] The water retaining cover 24 has ventilation and water retaining functions. The water retaining cover 24 can be disposed between the fan 22 and the cleaning chamber 11 , and the water retaining cover 24 is located inside the cleaning chamber 11 .

[0363] An air inlet 211 is formed between the water retaining cover 24 and the flange 201, and the fan 22 draws the gas in the cleaning chamber 11 into the air duct 21 through the air inlet 211. The number of 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 set according to the actual installation situation.

[0364] The mounting structure 242 and the flange 201 can be connected by a snap, a knob, or a threaded connection, and the water baffle 241 is connected to the flange 201 of 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 integral molding, welding, or a threaded connection.

[0365] In the case where the mounting structure 242 and the flange 201 are connected via threads, both the mounting structure 242 and the flange 201 are provided with meshing threads, and the mounting structure 242 and the flange 201 are meshedly connected via threads.

[0366] When the mounting structure 242 and the flange 201 are connected via a knob, the mounting structure 242 and the flange 201 may be provided with structures that engage with each other. After the mounting structure 242 and the flange 201 are rotated by a certain angle, the mounting structure 242 and the flange 201 are snap-fitted together.

[0367] According to the water retaining structure provided in the embodiment of the present application, by setting the air duct 21 and the water retaining cover 24, and the projection of the water retaining plate 241 on the first wall covers the projection of the air inlet end 20 on the first wall, it can reduce the situation in which the water flow of the cleaning equipment during the cleaning process directly enters the air duct 21 and directly impacts the inside of the fan 22 to cause contamination of the impeller 222, thereby playing a protective and protective role. At the same time, it also increases the air volume of the fan 22, which is conducive to the use of a higher power heater 23 downstream of the fan 22 to accelerate the drying process.

[0368] In some embodiments, as shown in FIG. 32 , there are multiple mounting structures 242 , which are spaced apart around the circumference of the water baffle 241 , and an air inlet 211 is formed between two adjacent mounting structures 242 .

[0369] Among them, there can be 2, 3 or more mounting structures 242. Multiple mounting structures 242 can be evenly distributed around the circumference of the water baffle 241, or can be set at different angles as required. The number and distribution of mounting structures 242 can be set according to the actual usage scenario.

[0370] By adding multiple mounting structures 242 , the water retaining cover 24 can be connected to the air inlet end 20 of the air duct 21 at multiple points, thereby improving the reliability of the connection.

[0371] In some embodiments, the flange 201 includes multiple flanges 201 distributed at intervals along the circumference of the air inlet end 20. The multiple flanges 201 can be first connected to the multiple mounting structures 242, and then the multiple flanges 201 and the multiple mounting structures 242 can be rotated by a certain angle so that the multiple flanges 201 are connected to the multiple mounting structures 242 one by one.

[0372] In this embodiment, the number and installation position of the flanges 201 match the installation structure 242. By setting multiple flanges 201 and connecting multiple installation structures 242 one by one, the connection points between the water retaining cover 24 and the air inlet end 20 of the air duct 21 can be increased, thereby improving the reliability of the connection.

[0373] In some embodiments, as shown in FIG32 , multiple flanges 201 and multiple mounting structures 242 are assembled or disassembled by means of knobs, and the connection method is simple and convenient.

[0374] Among them, multiple flanges 201 are distributed at intervals along the circumference of the air inlet end 20, and multiple mounting structures 242 are arranged at intervals around the circumference of the water retaining plate 241. Before connecting the water retaining cover 24 to the air inlet end 20 of the air duct 21, each of the multiple mounting structures 242 can be located between two adjacent flanges 201, and then the water retaining cover 24 is rotated relative to the air inlet end 20 of the air duct 21 by a certain angle so that the flange 201 and the axial projection of the air inlet end 20 in the air duct 21 have an overlapping part. At this time, the water retaining cover 24 is snap-fitted and connected to the air inlet end 20 of the air duct 21.

[0375] In some embodiments, the mounting structure 242 includes a slot 2421 that opens radially inward, and the flange 201 is embedded in the slot 2421. By rotating the water retaining cover 24, the area of ​​the flange 201 in the slot 2421 can be adjusted to facilitate assembly or disassembly.

[0376] In this embodiment, when there is only one flange 201, the flange 201 extends along the circumference of the air inlet end 20, and the flange 201 has a notch, and the mounting structure 242 embeds the flange 201 into the slot 2421 through the notch; when there are multiple flanges 201, the multiple flanges 201 are distributed at intervals along the circumference of the air inlet end 20, and the spacing between two adjacent flanges 201 of the mounting structure 242 embeds each flange 201 into one or more slots 2421.

[0377] In some embodiments, as shown in FIG32 , the mounting structure 242 includes: a connector 2422 and a clamping joint 2423 ; the connector 2422 is connected to the water baffle 241 ; the clamping joint 2423 is connected to the connector 2422 , and the clamping joint 2423 is provided with a clamping slot 2421 .

[0378] The clamping joint 2423, the connecting piece 2422 and the water baffle 241 can be connected by integral molding, welding or gluing.

[0379] The connecting member 2422 may be connected to an edge, a middle portion, or an area between the edge and the middle portion of the water retaining plate 241 .

[0380] In some embodiments, as shown in FIG. 32 , the clamping joint 2423 is located radially outside the water baffle 241 , and the radially outer side wall of the clamping joint 2423 is arc-shaped.

[0381] As shown in Figure 33, the clamping joint 2423 is located on the radial outside of the water baffle 241, that is, there is a certain distance between the outer side of the clamping joint 2423 and the radial outer side of the water baffle 241. When the clamping joint 2423 is connected to the flange 201, an air inlet 211 is formed between the water baffle 241 and the flange 201.

[0382] By setting the radial outer side wall of the card joint 2423 to be in an arc shape, the radial outer side wall of the card joint 2423 can be matched with the inner side wall 13 of the air inlet end 20 of the air duct 21.

[0383] In some embodiments, the connecting member 2422 has a hollow groove 24221 , and there may be one or more hollow grooves 24221 . The number and hollow area of ​​the hollow grooves 24221 may be set according to the area of ​​the connecting member 2422 .

[0384] By providing the hollow groove 24221 , the weight of the connecting member 2422 can be reduced, thereby reducing material costs.

[0385] In some embodiments, radially inner ends of the connectors 2422 of the plurality of mounting structures 242 are connected via an annular rib 2411 connected to the bottom surface of the water retaining plate 241 .

[0386] The bottom surface of the water baffle 241 is provided with an annular rib 2411. The annular rib 2411 can be arranged concentrically with the water baffle 241 or eccentrically with the water baffle 241. The annular rib 2411 can be connected to the bottom surface of the water baffle 241 by integral molding, welding, or gluing. The radial inner ends of the connectors 2422 of the multiple mounting structures 242 can be connected to the annular rib 2411 by integral molding, welding, or gluing.

[0387] In this embodiment, as shown in Figure 32, the radial inner ends of the connecting parts 2422 of multiple mounting structures 242 are connected to the annular rib 2411, which can connect the connecting parts 2422 of multiple mounting structures 242 to improve the stability of the connection between the multiple mounting structures 242 and the water baffle 241.

[0388] In some embodiments, as shown in FIG31 , the first wall is provided with a mounting boss 121 surrounding the mounting hole and protruding into the cleaning chamber 11 , and the water retaining structure further includes: a sealing ring clamped between the mounting boss 121 and the air duct 21 .

[0389] An installation space is formed between the installation boss 121 and the air inlet end 20 of the air duct 21 , and the sealing ring is located in the installation space. The sealing between the installation boss 121 and the air duct 21 can be achieved by squeezing the sealing ring.

[0390] Among them, the sealing ring can be made of rubber, plastic or other elastic materials, which can increase the sealing 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 equipment.

[0391] In some embodiments, as shown in FIG31 , the distance between the end surface of the mounting boss 121 and the surface of the water retaining cover 24 is Δh4, satisfying: Δh4 ≥ 5 mm.

[0392] Among them, the distance Δh4 between the end face of the mounting boss 121 and the surface of the water retaining cover 24 can be 5mm, 6mm, 8mm or a larger value. By setting the distance between the end face of the mounting boss 121 and the surface of the water retaining cover 24, the air intake of the air duct 21 can be increased, the power wall overheating of the heater 23 can be reduced, and safety hazards can be reduced.

[0393] In some embodiments, as shown in Figures 34 and 36, the water retaining cover 24 includes: a main cover body 243 and multiple water retaining member 244 groups; the main cover body 243 has a mounting structure 242 for mounting on the entire machine, and forms an air duct 2432; multiple water retaining member 244 groups are arranged at intervals along the axial direction of the air duct 2432, and each water retaining member 244 group includes multiple water retaining members 244 spaced apart along a direction intersecting the axial direction of the air duct 2432, and the axial projections of the multiple water retaining member 244 groups along the air duct 2432 cover the axial projections of the inlet end of the air duct 2432.

[0394] The main cover 243 is used to connect with the entire machine and a plurality of water retaining members 244 . The main cover 243 forms an air duct 2432 for realizing the circulation of air in the cleaning chamber 11 .

[0395] The main cover 243 can be connected to the entire machine by means of snap connection, thread connection or welding, and the main cover 243 and the plurality of water retaining parts 244 can be connected by means of integral molding, welding or gluing.

[0396] The entire machine has a structural part connected to the mounting structure 242. When the main cover body 243 is connected to the entire machine by a snap-on connection, one of the mounting structure 242 and the structural part is a fixed clip, and the other of the mounting structure 242 and the structural part is a connecting part 2422. The connecting part 2422 is inserted into the fixed clip to lock the main cover body 243 and the entire machine together; or, when the main cover body 243 is connected to the entire machine by a threaded connection, the mounting structure 242 and the structural part have mutually meshing threads, and the mounting structure 242 and the structural part are threadedly matched to lock the main cover body 243 and the entire machine together.

[0397] Among them, as shown in Figure 36, the water retaining member 244 group is provided with multiple layers, and the multiple layers of water retaining member 244 groups are arranged at intervals along the axial direction of the air duct 2432. The water retaining member 244 group can be provided with 2 layers, 3 layers or more layers. The specific number can be set according to the axial length of the air duct 2432. The adjacent two layers of water retaining member 244 groups are spaced apart to achieve ventilation. The setting of the multiple layers of water retaining member 244 groups can enhance the water retaining effect.

[0398] Among them, multiple water blocks 244 are arranged at intervals along the direction intersecting the axial direction of the air duct 2432. There can be 3, 4 or more water blocks 244. The number of water blocks 244 in each layer of water blocks 244 group can be the same or different. The number of water blocks 244 in each layer of water blocks 244 group can be determined according to the cross-sectional area of ​​the air duct 2432 in the plane.

[0399] As shown in Figure 36, the arrow in the figure indicates the direction of air flow. Two adjacent water retaining members 244 are spaced apart to achieve ventilation. The axial projections of multiple water retaining member 244 groups along the air duct 2432 cover the axial projections of the inlet end of the air duct 2432, so that the air flow is sucked into the air duct 21 by the fan 22 in a broken line shape along the spacing between two adjacent layers of water retaining member 244 groups and the spacing between two adjacent water retaining members 244, effectively blocking the entry of water flow while ensuring the circulation of gas.

[0400] In which, multiple water stops 244 can be spaced apart along a direction perpendicular to the axial direction of the cross-section of the air duct 2432, and the lengths of the multiple water stops 244 gradually change along the radial direction of the cross-section of the air duct 2432 so that the ends of the multiple water stops 244 are connected to the inner wall of the air duct 2432; or, multiple water stops 244 can be spaced apart along a direction inclined at an acute angle to the axial direction of the air duct 2432.

[0401] As shown in Figure 35, the sum of the axial projections of multiple water-blocking members 244 groups along the air duct 2432 is equal to or greater than the axial projection of the inlet end of the air duct 2432, so as to achieve full coverage of the air duct 2432 by multiple water-blocking members 244 groups.

[0402] The water retaining member 244 may be a water retaining rib, a water retaining film or a water retaining plate 241 or other structures.

[0403] According to the water retaining cover 24 provided in the embodiment of the present application, a plurality of water retaining parts 244 groups are arranged axially spaced apart along the air duct 2432, and each water retaining part 244 group includes a plurality of water retaining parts 244 spaced apart along a direction intersecting the axial direction of the air duct 2432, and the axial projections of the plurality of water retaining parts 244 groups along the air duct 2432 cover the axial projections of the inlet end of the air duct 2432, so that the air flow is sucked into the air duct 21 by the fan 22 in a broken line shape along the spacing between two adjacent layers of water retaining part 244 groups and the spacing between two adjacent water retaining parts 244. This can reduce the situation in which the water flow of the cleaning equipment during the cleaning process directly enters the air duct 21 and directly impacts the inside of the fan 22, causing pollution to the impeller 222, thereby playing a protective and protective role. At the same time, it also increases the air volume of the fan 22, which is conducive to the use of a higher power heater 23 downstream of the fan 22 to accelerate the drying process.

[0404] The plurality of water retaining members 244 may be distributed in parallel along the plane in which they are located, or may be distributed crosswise with each other.

[0405] In some embodiments, the water blocking members 244 in the plurality of water blocking member 244 groups are arranged in parallel and spaced apart to uniformly distribute the flow rate and air volume of the air flow.

[0406] In some embodiments, the intervals between two adjacent water blocking members 244 in the plurality of water blocking members 244 groups are equal to further uniform the flow rate and air volume of the air flow.

[0407] In some embodiments, as shown in FIG36 , the water retaining member 244 has a guide surface 2443 on a side facing away from the inlet end of the air duct 2432 , and the guide surface 2443 is inclined toward the outside of the water retaining member 244 in a direction close to the inlet end of the air duct 2432 .

[0408] The guide surface 2443 may be a plane or an arc-shaped surface.

[0409] By setting the guide surface 2443, the water vapor in the cleaning chamber 11 encounters the condensed water produced by the fan 22 and can flow back into the cleaning chamber 11 along the guide surface 2443, reducing the time the condensed water stays in the water retaining member 244 and increasing the drying effect in the chamber.

[0410] In some embodiments, as shown in Figure 36, the water retaining member 2444 includes a first plate 2441 and a second plate 2442, and the side of the first plate 2441 facing away from the inlet end of the air duct 2432 is connected to the side of the second plate 2442 facing away from the inlet end of the air duct 2432, and the normals of the first plate 2441 and the second plate 2442 form an acute angle with the axial direction of the air duct 2432, and the surface of the first plate 2441 facing away from the inlet end of the air duct 2432 and the surface of the second plate 2442 facing away from the inlet end of the air duct 2432 form a guide surface 2443.

[0411] The first plate 2441 and the second plate 2442 may be symmetrically arranged along their connection, or may be asymmetrically arranged, depending on the actual usage 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 may be different.

[0412] Among them, the first plate 2441 and the second plate 2442 are connected on the side away from the inlet end of the air duct 2432, and the first plate 2441 and the second plate 2442 are spaced apart on the side close to the inlet end of the air duct 2432. The first plate 2441 and the second plate 2442 form a bracket-shaped intercepting structure, which can increase the resistance to water flow and reduce the entry of water flow without generating large resistance to the airflow.

[0413] By setting the water retaining member 244 as a double-sided guide surface 2443, the condensed water generated by the fan 22 can flow back into the cleaning chamber 11 along the guide surface 2443, reducing the time the condensed water stays in the water retaining member 244 and increasing the drying effect in the cavity. At the same time, it can intercept the water vapor flowing into the air duct 21 along with the water vapor, reduce the amount of water entering the air duct 21, and protect the electrical components such as the fan 22 and heater 23 in the air duct 21.

[0414] In some embodiments, as shown in Figure 36, the main cover body 243 includes: a tube body 2431 and a flange 2433; the tube body 2431 forms an air duct 2432; the flange 2433 is connected to the outer periphery of the tube body 2431 and is arranged around the tube body 2431, and a mounting structure 242 is provided on the side of the tube body 2431 located away from the inlet end of the air duct 2432 of the flange 2433.

[0415] The tube body 2431 has a certain axial length, which can increase the number of water-blocking components 244 and improve the water-blocking effect.

[0416] The flange 2433 may be annular and surround the tube body 2431. The inner side of the flange 2433 is connected to the outer periphery of the tube body 2431, and the outer side of the flange 2433 extends away from the tube body 2431. The width of the flange 2433 is set according to the actual installation environment of the water retaining cover 24.

[0417] The flange 2433 can increase the overlapping area when the water retaining cover 24 is connected to the entire machine, thereby improving the sealing effect.

[0418] In some embodiments, as shown in FIG. 34 , there are multiple mounting structures 242 , and the multiple mounting structures 242 are spaced apart and arranged around the tube body 2431 . The multiple mounting structures 242 are assembled or disassembled with the entire machine by means of a knob.

[0419] Among them, there can be 2, 3 or more mounting structures 242. Multiple mounting structures 242 can be evenly distributed around the circumference of the tube body 2431, or can be set at different angles as required. The number and distribution of the mounting structures 242 can be set according to the actual usage scenario.

[0420] By adding multiple mounting structures 242 , the main cover 243 can be connected to the entire device at multiple points, thereby improving the reliability of the connection.

[0421] Before connecting the mounting structure 242 to the entire machine, each mounting structure 242 among the multiple mounting structures 242 can be located between the corresponding notches of the entire machine and the mounting structure 242, and then the main cover body 243 can be rotated a certain angle relative to the air inlet end 20 of the entire machine so that the connecting piece 2422 of the entire machine and the axial projection of the mounting structure 242 in the air duct 2432 have overlapping parts. At this time, the mounting structure 242 and the entire machine are snap-fitted and connected.

[0422] In some embodiments, as shown in FIG. 34 , the tube body 2431 is provided with a water guide port 2434 , and the water guide port 2434 is flush with a side of the flange 2433 facing away from the inlet end of the air passage 2432 .

[0423] Among them, the water outlet 2434 connects the air duct 2432 and the air duct 21. The condensed water generated by the condensation of water vapor in the air flow encountering the flange 2433 or the tube body 2431 can flow from the water outlet 2434 into the air duct 2432 and then flow back into the cleaning chamber 11, reducing the time that the condensed water stays in the water barrier 244 and increasing the drying effect in the cavity.

[0424] In some embodiments, as shown in Figure 36, the side of the flange 2433 away from the inlet end of the air duct 2432 is inclined downward toward the radial inner end, so that the condensed water can flow into the water guide port 2434 along the side of the inclined flange 2433, thereby further reducing the time that the condensed water stays in the water retaining member 244 and increasing the drying effect in the cavity.

[0425] In some embodiments, as shown in FIG. 34 , a sealing installation position 24331 for installing a sealing member is provided on a side of the flange 2433 facing away from the inlet end of the air passage 2432 .

[0426] 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.

[0427] 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.

[0428] In some embodiments, as shown in Figure 34, 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.

[0429] 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 .

[0430] 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.

[0431] In some embodiments, as shown in FIG. 37 , a reinforcing rib 24333 is provided between a side of the flange 2433 close to the inlet end of the air passage 2432 and an outer side wall of the tube body 2431 .

[0432] 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.

[0433] 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.

[0434] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0435] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present application. In the description of the present application, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0436] In the description of the present application, the phrases "above", "above" and "above" a first feature include the phrases "directly above" and "diagonally above" a second feature, or simply indicate that the first feature is horizontally higher than the second feature. In the description of the present specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A cleaning device, characterized in that: include: The inner tank forms a cleaning chamber; an exhaust assembly, mounted on the inner tank and configured to exhaust the gas in the cleaning chamber when opened; an air duct, mounted on the inner liner and having an air inlet communicating with the cleaning chamber and an air outlet communicating with the cleaning chamber, wherein the air inlet is located on the top wall of the inner liner; a fan, mounted on the top wall of the inner container and configured to drive the gas in the air duct when turned on; a heater, configured to heat the gas in the air duct when turned on; A water retaining cover is installed at the air inlet; The projection of the fan inlet on the top wall of the inner liner at least partially overlaps with the projection of the air inlet on the top wall of the inner liner, and the projection of the water retaining cover on the top wall of the inner liner covers the projection of the air inlet on the top wall of the inner liner.

2. The cleaning device according to claim 1, characterized in that The intersection area of the projection of the fan inlet on the top wall of the inner liner and the projection of the air inlet on the top wall of the inner liner is not less than 1 / 2 of the projection of the fan inlet on the top wall of the inner liner.

3. The cleaning device according to claim 1 or 2, characterized in that The air inlet is spaced apart from an edge of the projection of the water retaining cover on the top wall of the inner container in any area of the projection of the top wall of the inner container.

4. The cleaning device according to any one of claims 1 to 3, characterized in that The ratio of the projection of the water retaining cover on the top wall of the inner liner to the projection of the air inlet on the top wall of the inner liner is not less than 1.

1.

5. The cleaning device according to any one of claims 1 to 4, characterized in that The air inlet is arranged at a position close to the back plate of the inner container, and the air outlet of the air duct includes a plurality of air outlets arranged on the same side wall of the inner container.

6. The cleaning device according to claim 5, characterized in that The air duct includes: a first branch and a second branch, the upper ends of the first branch and the second branch are both connected to the outlet of the fan, the lower ends of the first branch and the second branch are each formed with the air outlet, and the lower end of the first branch is close to the front end opening of the inner tank, and the lower end of the second branch is close to the back plate of the inner tank, and the length of the first branch is greater than the length of the second branch.

7. The cleaning device according to claim 5 or 6, characterized in that The air duct includes a downwind duct, a plurality of air outlets are formed at the lower end of the downwind duct, the width of the downwind duct along the front-to-back direction gradually increases from top to bottom, and the thickness of the downwind duct along the left-to-right direction gradually decreases from top to bottom.

8. The cleaning device according to any one of claims 1 to 7, characterized in that The air duct also has a supplementary air inlet, which is connected to the outside and the supplementary air inlet is connected to the inlet of the fan.

9. The cleaning device according to claim 8, characterized in that The fan is installed above the top wall of the inner liner, and the air duct includes: an air supply branch, which extends from the top wall of the inner liner to the side of the inner liner, and the lower end of the air supply branch forms an air supply inlet located on the side of the inner liner; 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 branch.

10. The cleaning device according to any one of claims 1 to 9, characterized in that The air duct also has a supplementary air inlet, which is connected to the outside world; the air duct is provided with a valve, which is configured to close the supplementary air inlet under normal conditions and open under the action of a pressure difference.

11. The cleaning device according to claim 10, characterized in that The fan is installed above the top wall of the inner liner, and the air duct includes: a main air duct and a supply air branch, the supply air branch is located between the main air duct and the top wall of the inner liner, and the valve is installed on the wall between the supply air branch and the main air duct; the valve includes a damper pivotally mounted on the wall between the supply air branch and the main air duct, the first part of the damper is located in the supply air branch, and the second part of the damper is located in the main air duct, and the damper is configured to block the supply air branch under the action of gravity and open when the fan is turned on.

12. The cleaning device according to any one of claims 1 to 11, characterized in that The cleaning device has an internal circulation drying working mode, in which the fan and the heater are in operation and the exhaust component is stopped; And / or, the cleaning device has a dehumidification negative pressure working mode, in which the fan and the heater are stopped and the exhaust component is working; And / or, the cleaning device has a mixed working mode; in the mixed working mode, the fan, the heater and the exhaust assembly are all working; And / or, the cleaning device has a mixed dehumidification working mode; in the mixed dehumidification working mode, the fan and the exhaust component are both working, and the heater is stopped.

13. The cleaning device according to any one of claims 1 to 12, characterized in that When the exhaust assembly is in operation, the exhaust volume of the exhaust assembly is not less than the volume of gas entering the cleaning chamber from the outside.

14. The cleaning device according to any one of claims 1 to 13, characterized in that Also includes: The side plate is installed in the area of the air duct located on the side of the inner tank, the side plate is installed on the side wall of the inner tank, and the cover is arranged outside at least part of the air duct, and the inner side surface of the side plate is separated from the air duct and the heater.

15. The cleaning device according to any one of claims 1 to 14, characterized in that The power of the heater is P, which satisfies: P≤500W.

16. The cleaning device according to any one of claims 1 to 15, characterized in that The fan includes an upper shell, an impeller and a motor assembly. The motor assembly is dynamically coupled to the impeller. The upper shell is connected to the air duct to form an accommodating cavity. The impeller is installed in the accommodating cavity.

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