Cleaning apparatus

Abstract

A cleaning apparatus, comprising: an inner container (1), an air exhaust assembly (4), an air duct (21), a fan (22) and a heater (23), wherein the inner container (1) forms a cleaning chamber (11); the air exhaust assembly (4) is mounted at the inner container (1) and is configured to exhaust gas from the cleaning chamber (11) when the air exhaust assembly is turned on; the air duct (21) is mounted at the inner container (1), and is provided with an air inlet (211) and air outlets (212) which are all in communication with the cleaning chamber (11); the fan (22) is configured to drive gas in the air duct (21) when the fan is turned on; and the heater (23) is configured to heat the gas flowing through the air duct (21) when the heater is turned on. A vertical height difference between the center of the air inlet (211) and the center of the air outlets (212) is Δh1, and the height of the cleaning chamber (11) is H0, the two satisfying H0>Δh1≥0.5H0.

Description

cleaning equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number: 202410150200.9 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, which need 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 improves the utilization rate of hot air heat energy and reduces the energy consumption of the hot air drying mode of the cleaning device, thereby achieving energy saving, compared with cleaning devices that use hot air drying through external circulation.

[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 and an air outlet both communicating with the cleaning chamber;

[0013] a blower configured to drive the gas in the air duct when turned on;

[0014] A heater, configured to heat the gas flowing through the air duct when turned on; wherein,

[0015] A vertical height difference between the center of the air inlet and the center of the air outlet is Δh1, and a height of the cleaning chamber is H0, which satisfies the following: H0>Δh1≥0.5H0.

[0016] According to the cleaning equipment provided by the embodiment of the present application, by providing internal circulation components such as an air duct, a blower, and a heater, on the one hand, the air inlet and the air outlet of the air duct are both connected to the cleaning chamber, the gas in the cleaning chamber is sucked into the air duct from the air inlet of the air duct by the blower, and the hot air heated by the heater enters the cleaning chamber from the air outlet of the air duct, and the dry gas in the cleaning chamber is circulated and heated by the heater to achieve hot air drying of the dishes in the cleaning chamber; on the other hand, by setting the vertical height difference Δh1 between the center of the air inlet and the center of the air outlet and the height H0 of the cleaning chamber to meet the following conditions: H0 ≥ Δh1 ≥ 0.5H0, the uniformity of the water vapor distribution and temperature distribution in the cleaning chamber can be effectively improved, and the effect of drying the entire cleaning chamber and the dead corners can be significantly improved. Compared with cleaning equipment that performs hot air drying through external circulation, the utilization rate of the hot air heat energy is improved, the energy consumption of the hot air drying working mode of the cleaning equipment is reduced, and the effect of drying the entire cleaning chamber and the dead corners can be significantly improved.

[0017] According to one embodiment of the present application, the cleaning chamber has a first side and a second side arranged opposite to each other, the air outlet is located on the second side, and the distance from the center of the air inlet to the second side is smaller than the distance from the center of the air inlet to the first side.

[0018] According to one embodiment of the present application, the following condition is satisfied: a2 / a1≥3, wherein a1 is the distance from the center of the air inlet to the second side surface, and a2 is the distance from the center of the air inlet to the first side surface.

[0019] According to one embodiment of the present application, the center of the air inlet and the center of the air outlet are staggered in the front-rear direction of the cleaning device.

[0020] According to one embodiment of the present application, the air inlet is located on the top wall of the cleaning chamber, and the air outlet is located on the lower side of the cleaning chamber.

[0021] According to one embodiment of the present application, the fan is installed above the top wall of the inner liner, and at least a portion of the air duct is located above the top wall and outside the side wall of the inner liner.

[0022] 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.

[0023] According to one embodiment of the present application, the air duct includes a supply air branch, the supply air inlet of the supply air branch is connected to the outside, and the supply air outlet of the supply air branch is connected to the cleaning chamber.

[0024] According to one embodiment of the present application, when the exhaust assembly and the fan are working, the exhaust volume of the exhaust assembly is not less than the air supply volume of the air supply branch.

[0025] According to one embodiment of the present application, it further 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.

[0026] According to one embodiment of the present application, the power of the heater is P, which satisfies: P≤500WP≤500W.

[0027] 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.

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

[0033] The inner tank forms a cleaning chamber;

[0034] an exhaust assembly, mounted on the inner tank and configured to exhaust the gas in the cleaning chamber when opened;

[0035] an air duct, mounted on the inner liner and having an air inlet and an air outlet both communicating with the cleaning chamber;

[0036] a blower configured to drive the gas in the air duct when turned on;

[0037] A heater, configured to heat the gas flowing through the air duct when turned on; wherein,

[0038] A vertical height difference between the center of the air inlet and the center of the air outlet is Δh1, and a height of the cleaning chamber is H0, which satisfies the following: H0>Δh1≥0.5H0.

[0039] According to the cleaning equipment provided by the embodiment of the present application, by providing internal circulation components such as an air duct, a blower, and a heater, on the one hand, the air inlet and the air outlet of the air duct are both connected to the cleaning chamber, the gas in the cleaning chamber is sucked into the air duct from the air inlet of the air duct by the blower, and the hot air heated by the heater enters the cleaning chamber from the air outlet of the air duct, and the dry gas in the cleaning chamber is circulated and heated by the heater to achieve hot air drying of the dishes in the cleaning chamber; on the other hand, by setting the vertical height difference Δh1 between the center of the air inlet and the center of the air outlet and the height H0 of the cleaning chamber to meet the following conditions: H0 ≥ Δh1 ≥ 0.5H0, the uniformity of the water vapor distribution and temperature distribution in the cleaning chamber can be effectively improved, and the effect of drying the entire cleaning chamber and the dead corners can be significantly improved. Compared with cleaning equipment that performs hot air drying through external circulation, the utilization rate of the hot air heat energy is improved, the energy consumption of the hot air drying working mode of the cleaning equipment is reduced, and the effect of drying the entire cleaning chamber and the dead corners can be significantly improved.

[0040] According to one embodiment of the present application, the cleaning chamber has a first side and a second side arranged opposite to each other, the air outlet is located on the second side, and the distance from the center of the air inlet to the second side is smaller than the distance from the center of the air inlet to the first side.

[0041] According to one embodiment of the present application, the following condition is satisfied: a2 / a1≥3, wherein a1 is the distance from the center of the air inlet to the second side surface, and a2 is the distance from the center of the air inlet to the first side surface.

[0042] According to one embodiment of the present application, the center of the air inlet and the center of the air outlet are staggered in the front-rear direction of the cleaning device.

[0043] According to one embodiment of the present application, the air inlet is located on the top wall of the cleaning chamber, and the air outlet is located on the lower side of the cleaning chamber.

[0044] According to one embodiment of the present application, the fan is installed above the top wall of the inner liner, and at least a portion of the air duct is located above the top wall and outside the side wall of the inner liner.

[0045] 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.

[0046] According to one embodiment of the present application, the air duct includes an air supply branch, the air supply inlet of the air supply branch is connected to the outside world, and the air supply outlet of the air supply branch is connected to the cleaning chamber. 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.

[0047] According to one embodiment of the present application, it further 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.

[0048] According to one embodiment of the present application, the power of the heater is P, which satisfies: P≤500WP≤500W.

[0049] 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.

[0050] 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.

[0051] 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;

[0052] 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;

[0053] 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.

[0054] 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

[0055] 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:

[0056] FIG1 is a schematic diagram of a cleaning device according to an embodiment of the present invention;

[0057] FIG2 is a second structural diagram of a cleaning device provided in an embodiment of the present application;

[0058] FIG3 is a schematic diagram of the structure of an internal circulation component provided in an embodiment of the present application;

[0059] FIG4 is a third structural diagram of a cleaning device provided in an embodiment of the present application;

[0060] FIG5 is a fourth structural diagram of the cleaning device provided in an embodiment of the present application;

[0061] FIG6 is a fifth structural diagram of a cleaning device provided in an embodiment of the present application;

[0062] FIG7 is a second structural diagram of the internal circulation assembly provided in an embodiment of the present application;

[0063] FIG8 is a partial enlarged view of point B in FIG2;

[0064] FIG9 is a sixth structural diagram of a cleaning device provided in an embodiment of the present application;

[0065] FIG10 is a seventh structural diagram of a cleaning device provided in an embodiment of the present application;

[0066] FIG11 is a partial enlarged view of point A in FIG10;

[0067] FIG12 is an eighth structural diagram of a cleaning device provided in an embodiment of the present application;

[0068] FIG13 is a ninth structural diagram of a cleaning device provided in an embodiment of the present application;

[0069] FIG14 is a tenth structural diagram of a cleaning device provided in an embodiment of the present application;

[0070] FIG15 is a third structural diagram of an internal circulation assembly provided in an embodiment of the present application;

[0071] FIG16 is a schematic structural diagram of a flexible connector provided in an embodiment of the present application;

[0072] FIG17 is a schematic structural diagram of a downwind duct provided in an embodiment of the present application;

[0073] FIG18 is a schematic structural diagram of an upper air duct provided in an embodiment of the present application;

[0074] FIG19 is a schematic structural diagram of a main body portion provided in an embodiment of the present application;

[0075] FIG20 is a schematic structural diagram of the cleaning device according to an embodiment of the present application;

[0076] FIG21 is a partial enlarged view of point D in FIG20;

[0077] FIG22 is a twelfth structural diagram of a cleaning device provided in an embodiment of the present application;

[0078] FIG23 is a partial enlarged view of point C in FIG22;

[0079] FIG24 is a thirteenth structural diagram of a cleaning device provided in an embodiment of the present application;

[0080] FIG25 is a partial enlarged view of point E in FIG22;

[0081] FIG26 is a schematic diagram of the structure of a water retaining cover according to an embodiment of the present application;

[0082] FIG27 is a second structural diagram of a water retaining cover provided in an embodiment of the present application;

[0083] FIG28 is a third structural diagram of a water retaining cover provided in an embodiment of the present application;

[0084] FIG29 is a fourth structural diagram of a water retaining cover provided in an embodiment of the present application;

[0085] FIG30 is a fifth structural diagram of a water retaining cover provided in an embodiment of the present application;

[0086] Figure 31 is the sixth structural schematic diagram of the water retaining cover provided in the embodiment of the present application.

[0087] Reference numerals: Inner container 1, cleaning chamber 11, first side surface 111, second side surface 112; top wall 12, mounting boss 121, side wall 13, back plate 14, front opening 15, bottom wall 16; internal circulation assembly 2, air inlet end 20, flange 201; air duct 21, air inlet 211, air outlet 212, supply air branch 213, supply air inlet 2131, upper air duct 214, horizontal section 2141, lower connecting section 2142, first connecting structure 2143; fan mounting position 2146, first air guide section 2147, volute tongue 2148, arc section 21481, straight section 21482; second air guide section 2149; lower air duct 215, expansion section 2154, isolation plate 2155; grille 2156; Main body 2158, upper connecting section 21581, air duct shell 21582, third connecting structure 21583, heat spreader 21584, heater mounting position 21585, thermostat mounting position 21586, cover 2157, fourth connecting structure 21571; flexible connector 217, cover plate 2171, second connecting structure 21711, sleeve 2172, avoidance hole 2173; fan 22, upper shell 221, impeller 222; heater 23, water retaining cover 24, water retaining plate 241, annular rib 2411, mounting structure 242, slot 2421, connector 2422, hollow slot 24221, snap joint 2423; main cover 243, tube body 2431, air duct 2432, flange 2433, sealing mounting position 24331, raised portion 24332, Reinforcing ribs 24333 , water guide port 2434 ; water retaining member 244 , first plate 2441 , second plate 2442 , guide surface 2443 ; sealing device 25 , thermostat 29 ; side panel 3 , exhaust assembly 4 , air inlet 41 , bowl basket 5 . DETAILED DESCRIPTION

[0088] 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.

[0089] The following describes a cleaning device according to an embodiment of the present application with reference to Figures 1 to 31. The cleaning device of the present application can clean and dry various items such as tableware and clothing.

[0090] 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 11. After cleaning, the hot air drying process begins. Drying the items in the cleaning chamber 11 can reduce bacterial growth. For ease of explanation, this application uses a dishwasher as an example.

[0091] As shown in Figures 1, 2 and 3, the cleaning device of the embodiment of the present application includes: an inner tank 1, an exhaust component 4, an air duct 21, a fan 22 and a heater 23.

[0092] 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 and an air outlet 212 both of which are connected to the clean chamber 11; the fan 22 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 flowing through the air duct 21 when it is turned on; wherein, the vertical height difference between the center of the air inlet 211 and the center of the air outlet 212 is Δh1, and the height of the clean chamber 11 is H0, satisfying: H0≥Δh1≥0.5H0.

[0093] 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.

[0094] 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.

[0095] The cleaning chamber 11 is used to place 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] The air duct 21 has an air inlet 211 and an air outlet 212 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 hot air can be used to dry items such as tableware in the cleaning chamber 11.

[0101] The air duct 21 has an air inlet 211 communicating with the cleaning chamber 11 and an air outlet 212 communicating with the cleaning chamber 11. The air inlet 211 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 and the air outlet 212 of the air duct 21 can be set according to the specific usage scenario. For example, the number of air outlet 212 can be set to two or one.

[0102] 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.

[0103] The fan 22 is connected to the air inlet 211 of the air duct 21, so that when the fan 22 is turned on, it draws the air in the cleaning chamber 11 into the air duct 21. The fan 22 can be installed at the air inlet 211, the air outlet 212, or between the air inlet 211 and the air outlet 212 of the air duct 21. The fan 22 can be a device capable of driving air flow, such as a centrifugal air supply device, an exhaust fan, or a ventilation air supply device.

[0104] 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 .

[0105] 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.

[0106] 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.

[0107] In this embodiment, the fan 22 and the heater 23 constitute the internal circulation component 2 of the cleaning equipment, which is used to circulate and heat the gas in the cleaning chamber 11 and provide the heat required for drying the dishes and the air flow speed required for convection.

[0108] 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.

[0109] The air outlet 212 of the air duct 21 is used to discharge the gas heated by the heater 23 into the cleaning chamber 11. The air inlet 41 of the exhaust assembly 4 is connected to the cleaning chamber 11 and is used to discharge the water vapor that has evaporated or volatilized in the cleaning chamber 11 out of the cleaning chamber 11 along with the gas.

[0110] 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.

[0111] Among them, the internal circulation component 2 and the exhaust component 4 can be operated in a jointly opened or individually opened manner.

[0112] When only the internal circulation component 2 is running, the air in the cleaning chamber 11 is circulated and heated, and the heat is evenly distributed. The colder areas in the cleaning chamber 11 can evaporate and dry faster through heat transfer and convection heat exchange, which is beneficial to the drying of the entire cleaning chamber 11 and reduces drying dead corners.

[0113] When only the exhaust assembly 4 is working, the cleaning chamber 11 is drawn into a negative pressure state by the exhaust assembly 4 due to the lack of external air supply. The negative pressure environment also helps to improve the drying rate.

[0114] 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.

[0115] As shown in Figures 1 and 2, the center of the internal circulation air inlet 211 is higher than the center of the internal circulation air outlet 212, and the air inlet side of the fan 22 faces the inside of the cleaning chamber 11, which is beneficial to the uniformity of air circulation and heat flow distribution in the chamber.

[0116] 2 , the vertical height difference Δh1 between the center of the air inlet 211 of the air duct 21 and the center of the air outlet 212 of the air duct 21 can be: 0.5H0, 0.6H0, 0.7H0 or Δh1=H0, and the specific position can be set according to the installation position of the cleaning equipment.

[0117] When Δh1 = H0 , the center of the air inlet 211 of the air duct 21 and the center of the air outlet 212 of the air duct 21 are located at the top and bottom surfaces of the cleaning chamber 11 , respectively.

[0118] When Δh1=0.5H0, 0.6H0 or 0.7H0, the center of the air inlet 211 of the air duct 21 and the center of the air outlet 212 of the air duct 21 can be located on the same side of the cleaning chamber 11, or one can be located at the top and the other at the side, or one can be located at the side and the other at the bottom.

[0119] By setting the center of the internal circulation air inlet 211 to be at least 0.5H0 higher than the center of the internal circulation air outlet 212, the uniformity of water vapor distribution and temperature distribution in the cleaning chamber 11 can be effectively improved, and the effect of drying the entire chamber and dead corners of the cleaning chamber 11 can be improved.

[0120] According to the cleaning device provided in the embodiment of the present application, by providing an internal circulation component 2 such as an air duct 21, a fan 22 and a heater 23, on the one hand, the air inlet 211 and the air outlet 212 of the air duct 21 are both connected to the cleaning chamber 11, and 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, and the dry gas in the cleaning chamber 11 is circulated and heated by the heater 23 to achieve hot air drying of the tableware in the cleaning chamber 11; on the other hand, by setting the vertical height difference Δh1 between the center of the air inlet 211 and the center of the air outlet 212 to meet the height H0 of the cleaning chamber 11: H0≥Δh1≥0.5H0, the uniformity of the water vapor distribution and temperature distribution in the cleaning chamber 11 can be effectively improved, and the effects of full-cavity drying and dead-corner drying of the cleaning chamber 11 can be significantly improved. Compared with cleaning equipment that performs hot air drying through external circulation, the utilization rate of hot air thermal energy is improved, the energy consumption of the hot air drying working mode of the cleaning equipment is reduced, and the effect of full-cavity drying and dead-corner drying of the cleaning chamber 11 is significantly improved.

[0121] In some embodiments, as shown in FIG4 , the cleaning chamber 11 has a first side surface 111 and a second side surface 112 that are oppositely disposed, the air outlet 212 is located on the second side surface 112 , and the distance from the center of the air inlet 211 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 .

[0122] In this embodiment, as shown in Figures 4 and 9, 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 arranged, 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.

[0123] 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.

[0124] In some embodiments, as shown in FIG. 4 , the cleaning device satisfies: a2 / a1≥3, where a1 is the distance from the center of the air inlet 211 to the second side 112 , and a2 is the distance from the center of the air inlet 211 to the first side 111 .

[0125] Here, a2 / a1 can be equal to 3, 4 or a larger ratio.

[0126] By setting the position of the air inlet 211, the path of hot air flowing in the cleaning chamber 11 can be further extended, the utilization efficiency of hot air heat energy can be improved, and the uniformity of gas mixing in the cleaning chamber 11 can be improved, thereby reducing drying dead corners.

[0127] In some embodiments, as shown in FIG. 2 and FIG. 5 , the center of the air inlet 211 and the center of the air outlet 212 are staggered in the front-to-back direction of the cleaning device.

[0128] Among them, the center of the air inlet 211 can be close to the front side of the cleaning equipment, and the center of the air outlet 212 can be close to the back side of the cleaning equipment; or, the center of the air inlet 211 can be close to the back side of the cleaning equipment, and the center of the air outlet 212 can be close to the front side of the cleaning equipment, so as to extend the path of hot air flowing in the cleaning chamber 11, improve the utilization efficiency of hot air thermal energy, and at the same time improve the uniformity of gas mixing in the cleaning chamber 11, and reduce drying dead corners.

[0129] In some embodiments, as shown in FIG. 1 and FIG. 2 , the air inlet 211 is located on the top wall 12 of the cleaning chamber 11 , and the air outlet 212 is located on the lower side of the cleaning chamber 11 .

[0130] The air inlet 211 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 may be located at the lower portion of the adjacent side surface near the bottom surface.

[0131] 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 conducive to drying the entire chamber and reducing drying dead corners; on the other hand, it can reduce the water vapor from entering the internal circulation components 2 such as the air duct 21, the fan 22 and the heater 23 through the air inlet 211, thereby protecting the internal circulation components 2.

[0132] In some embodiments, as shown in Figures 4 and 10, 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.

[0133] In some embodiments, as shown in FIG. 4 , 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 .

[0134] 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.

[0135] In some embodiments, as shown in FIG. 2 and FIG. 10 , the fan 22 is installed above the top wall 12 of the inner container 1 , and at least a portion of the air duct 21 is located above the top wall 12 of the inner container 1 and outside the side wall 13 .

[0136] Among them, the air inlet 211 is located above the top wall 12 of the inner liner 1, the air outlet 212 is located on the side wall 13 of the inner liner 1, and at least part of the air duct 21 is bent. The bending angle of the air duct 21 can be determined according to the angle between the top wall 12 of the inner liner 1 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.

[0137] The air duct 21 is located outside 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 .

[0138] 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.

[0139] 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.

[0140] 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.

[0141] In some embodiments, the fan 22 can also be installed below the bottom wall 16 of the inner tank 1.

[0142] It should be noted that the distance from the bottom plate of the cleaning equipment to the ground is greater than the distance from the outer shell of the top plate, that is, the installation space under the bottom plate of the cleaning equipment is greater than the installation space under the top plate, and a larger-sized fan 22 can be installed. At the same noise level, the circulating air volume can be further increased, which is beneficial to the overall drying effect and shortens the drying time.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] In some embodiments, as shown in Figures 1 and 6, the air duct 21 includes an air supply branch 213, the air supply inlet 2131 of the air supply branch 213 is connected to the outside world, and the air supply outlet of the air supply branch 213 is connected to the cleaning chamber 11. 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.

[0148] Among them, the air duct 21 includes two branches of internal circulation and external circulation. The air inlet 2131 of the air supply branch 213 is connected to the outside world, and the air outlet of the air supply branch 213 is connected to the cleaning chamber 11. The setting of the air supply branch 213 forms an external circulation branch of the cleaning chamber 11; the branch with the air inlet 211 and the air outlet 212 connected to the cleaning chamber 11 belongs to the internal circulation branch. In Figure 7, the hollow arrow represents the external circulation, and the solid arrow represents the internal circulation.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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.

[0153] 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.

[0154] In some embodiments, as shown in Figures 12 and 13, 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.

[0155] 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 .

[0156] 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.

[0157] In some embodiments, as shown in FIG13 , 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.

[0158] 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.

[0159] 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 .

[0160] 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.

[0161] 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.

[0162] In some embodiments, the power of the heater 23 is P, which satisfies: P≤500WP≤500W.

[0163] The power P of the heater 23 may be 150W, 200W, 350W, 400W or 500W, and may be specifically limited according to usage.

[0164] 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.

[0165] 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.

[0166] In some embodiments, as shown in Figures 8 and 11, 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.

[0167] 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.

[0168] In this embodiment, as shown in Figure 2, the fan 22 is installed above the top wall 12 installed on the inner tank 1. The fan 22 can only retain the upper shell 221, the impeller 222 and the motor assembly, and the original lower shell of the fan 22 is omitted, thereby reducing the overall size of the fan 22. A larger fan 22 can be installed in the same space, and 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.

[0169] In some embodiments, as shown in FIG3 , 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 .

[0170] 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.

[0171] In some embodiments, as shown in Figure 3, 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.

[0172] In some embodiments, as shown in FIG. 2 , FIG. 8 and FIG. 12 , the cleaning device further includes a water retaining cover 24 , which is installed at the air inlet 211 .

[0173] The water retaining cover 24 has ventilation and water retaining functions. The water retaining cover 24 can be set between the fan 22 and the cleaning chamber 11, and the water retaining cover 24 is located in the cleaning chamber 11. When the fan 22 is turned on, the fan 22 can pass through the water retaining cover 24 to draw the gas in the cleaning chamber 11 into the fan 22 installation position. At the same time, the water retaining cover 24 can reduce the direct impact and splashing of water on the fan 22 and the heater 23 in the air duct 21, playing a protective and protective role.

[0174] The water retaining cover 24 can be connected to the air inlet 211 by a threaded connection, a plug-in connection, a pivot connection, a snap connection or the like.

[0175] In some embodiments, as shown in FIG. 2 , the air outlet 212 is provided with a grille 2156 .

[0176] 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.

[0177] 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.

[0178] 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.

[0179] The grille 2156 can also reduce the direct impact of water flow on the air duct 21 and protect the air duct 21.

[0180] In some embodiments, the cleaning device has at least the following working modes:

[0181] First, the cleaning equipment has an internal circulation drying working mode.

[0182] 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.

[0183] 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 .

[0184] Second, the cleaning equipment has a dehumidification negative pressure working mode;

[0185] 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.

[0186] Third, the cleaning equipment has a hybrid working mode;

[0187] 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.

[0188] Fourth, the cleaning equipment has a mixed dehumidification working mode;

[0189] 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.

[0190] As shown in FIG. 14 and FIG. 15 , the cleaning device of the embodiment of the present application further includes an air duct structure, which includes an upper air duct 214 , a flexible connector 217 and a lower air duct 215 .

[0191] 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.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] In some embodiments, as shown in Figure 16, 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.

[0199] 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.

[0200] In some embodiments, as shown in Figure 16, 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.

[0201] 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.

[0202] 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 .

[0203] 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.

[0204] The cover plate 2171 and the sleeve 2172 have at least the following two structural forms:

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] 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.

[0211] In some embodiments, as shown in FIG. 16 and FIG. 17 , 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 .

[0212] 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.

[0213] 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.

[0214] 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.

[0215] 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.

[0216] 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.

[0217] In some embodiments, as shown in Figure 15, 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.

[0218] 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.

[0219] The main body 2158 and the cover 2157 can be connected by means of plug-in connection, clamp connection or fixture connection, so as to facilitate disassembly, assembly and replacement.

[0220] 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.

[0221] 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.

[0222] In some embodiments, as shown in FIG. 19 , the main body 2158 includes an upper connecting section 21581 and an air duct shell 21582 .

[0223] 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 .

[0224] 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 .

[0225] In some embodiments, as shown in Figures 15 and 18, 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.

[0226] 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.

[0227] 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.

[0228] 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.

[0229] 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.

[0230] In some embodiments, as shown in FIG. 19 , 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 .

[0231] 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.

[0232] 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.

[0233] 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.

[0234] In some embodiments, as shown in FIG19 , the heater mounting position 21585 and the thermostat 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 thermostat 29 .

[0235] 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.

[0236] In some embodiments, as shown in FIG15 , 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.

[0237] 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.

[0238] In some embodiments, as shown in Figure 20, 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.

[0239] 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.

[0240] 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.

[0241] 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.

[0242] 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.

[0243] In some embodiments, as shown in FIG. 20 , 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 .

[0244] 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.

[0245] In some embodiments, as shown in FIG. 20 , 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°.

[0246] Among them, the inclination angle γ of the front side wall 13 of the expansion section 2154 and the vertical direction can be 10°, 20°, 30° or 45°, which can be set according to the actual usage scenario.

[0247] 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.

[0248] In some embodiments, a thermostat installation position 21586 for installing the thermostat 29 is provided in the downwind duct 215 .

[0249] 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.

[0250] 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.

[0251] The thermostat installation position 21586 in the downwind duct 215 has at least the following two structures:

[0252] First, the expansion section 2154 is provided with a thermostat mounting position 21586 for mounting the thermostat 29 .

[0253] 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 .

[0254] 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.

[0255] 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 .

[0256] 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.

[0257] Secondly, as shown in FIG21 , 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.

[0258] 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.

[0259] In some embodiments, as shown in FIG21 , 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.

[0260] 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.

[0261] 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.

[0262] 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.

[0263] As shown in Figures 22 and 23, 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.

[0264] 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.

[0265] 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.

[0266] 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.

[0267] 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.

[0268] 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.

[0269] 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.

[0270] 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.

[0271] 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.

[0272] 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.

[0273] 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.

[0274] In some embodiments, as shown in FIG. 23 , 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°.

[0275] 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.

[0276] 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 .

[0277] In some embodiments, as shown in FIG. 23 , the arc angle of the arc segment 21481 is δ, satisfying: 30°≤δ≤90°.

[0278] 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.

[0279] 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.

[0280] In some embodiments, as shown in FIG. 23 , 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.

[0281] 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.

[0282] 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.

[0283] 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.

[0284] In some embodiments, as shown in FIG. 23 , the air duct 21 is opened at the fan installation position 2146 to form a lower volute of the fan 22 .

[0285] In this embodiment, the fan installation position 2146 is open to facilitate the installation of the impeller 222 of the fan 22.

[0286] 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.

[0287] In some embodiments, as shown in Figures 24 and 25, 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.

[0288] As shown in Figures 25 and 26, 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.

[0289] 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.

[0290] 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.

[0291] 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 .

[0292] 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.

[0293] 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.

[0294] 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.

[0295] 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.

[0296] 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.

[0297] In some embodiments, as shown in FIG. 26 , 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 .

[0298] 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.

[0299] 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.

[0300] 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.

[0301] 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.

[0302] In some embodiments, as shown in FIG. 26 , the plurality of flanges 201 and the plurality of mounting structures 242 are assembled or disassembled by means of knobs, and the connection method is simple and convenient.

[0303] 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.

[0304] 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.

[0305] 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.

[0306] In some embodiments, as shown in FIG. 26 , 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 .

[0307] The clamping joint 2423, the connecting piece 2422 and the water baffle 241 can be connected by integral molding, welding or gluing.

[0308] 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 .

[0309] In some embodiments, as shown in FIG. 26 , 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.

[0310] As shown in Figure 27, 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 outside 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.

[0311] 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.

[0312] 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 .

[0313] By providing the hollow groove 24221 , the weight of the connecting member 2422 can be reduced, thereby reducing material costs.

[0314] 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 .

[0315] 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.

[0316] In this embodiment, as shown in Figure 26, the radial inner ends of the connecting pieces 2422 of multiple mounting structures 242 are connected to the annular rib 2411, which can connect the connecting pieces 2422 of multiple mounting structures 242 to improve the stability of the connection between the multiple mounting structures 242 and the water baffle 241.

[0317] In some embodiments, as shown in FIG. 25 , the first wall is provided with a mounting boss 121 surrounding the mounting hole and protruding into the cleaning chamber 11 . The water retaining structure further includes a sealing ring clamped between the mounting boss 121 and the air duct 21 .

[0318] 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.

[0319] 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.

[0320] In some embodiments, as shown in FIG. 25 , 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.

[0321] 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.

[0322] In some embodiments, as shown in Figures 28 and 30, 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.

[0323] 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 .

[0324] 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.

[0325] 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.

[0326] Among them, as shown in Figure 30, 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.

[0327] 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.

[0328] As shown in Figure 30, 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.

[0329] 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.

[0330] As shown in Figure 29, 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.

[0331] The water retaining member 244 may be a water retaining rib, a water retaining film or a water retaining plate 241 or other structures.

[0332] 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.

[0333] 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.

[0334] 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.

[0335] 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.

[0336] In some embodiments, as shown in FIG30 , 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 .

[0337] The guide surface 2443 may be a plane or an arc-shaped surface.

[0338] 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.

[0339] In some embodiments, as shown in Figure 30, 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.

[0340] 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.

[0341] 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.

[0342] 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.

[0343] In some embodiments, as shown in Figure 30, 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.

[0344] 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.

[0345] 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.

[0346] 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.

[0347] In some embodiments, as shown in FIG. 28 , 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 device by means of a knob.

[0348] 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.

[0349] By adding multiple mounting structures 242 , multi-point connection between the main cover 243 and the entire machine can be achieved, thereby improving the reliability of the connection.

[0350] 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.

[0351] In some embodiments, as shown in FIG. 28 , 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 that is away from the inlet end of the air passage 2432 .

[0352] 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.

[0353] In some embodiments, as shown in Figure 30, 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.

[0354] In some embodiments, as shown in FIG. 28 , 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 .

[0355] 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.

[0356] 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.

[0357] In some embodiments, as shown in Figure 28, 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.

[0358] 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 .

[0359] 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.

[0360] In some embodiments, as shown in FIG. 31 , 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 .

[0361] 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.

[0362] 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.

[0363] 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.

[0364] 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" and the like indicate orientations or positional relationships 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 operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0365] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0366] In the description of this application, “plurality” means two or more.

[0367] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0368] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0369] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means 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 this specification, the illustrative expressions 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 any suitable manner in any one or more embodiments or examples.

[0370] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that 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 and an air outlet both communicating with the cleaning chamber; a blower configured to drive the gas in the air duct when turned on; A heater, configured to heat the gas flowing through the air duct when turned on; wherein, A vertical height difference between the center of the air inlet and the center of the air outlet is Δh1, and a height of the cleaning chamber is H0, which satisfies the following: H0>Δh1≥0.5H0.

2. The cleaning device according to claim 1, characterized in that The cleaning chamber has a first side surface and a second side surface that are opposite to each other. The air outlet is located on the second side surface. The distance from the center of the air inlet to the second side surface is smaller than the distance from the center of the air inlet to the first side surface.

3. The cleaning device according to claim 2, characterized in that Satisfies: a2 / a1≥3, where a1 is the distance from the center of the air inlet to the second side surface, and a2 is the distance from the center of the air inlet to the first side surface.

4. The cleaning device according to any one of claims 1 to 3, characterized in that The center of the air inlet and the center of the air outlet are staggered in the front-rear direction of the cleaning device.

5. The cleaning device according to any one of claims 1 to 4, characterized in that The air inlet is located on the top wall of the cleaning chamber, and the air outlet is located on the lower side of the cleaning chamber.

6. The cleaning device according to any one of claims 1 to 5, characterized in that The fan is installed above the top wall of the inner container, and at least a portion of the air duct is located above the top wall and outside the side wall of the inner container.

7. The cleaning device according to any one of claims 1 to 6, 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.

8. The cleaning device according to any one of claims 1 to 7, characterized in that The air duct includes an air supply branch, the air supply inlet of the air supply branch is connected to the outside world, and the air supply outlet of the air supply branch is connected to the cleaning chamber. 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.

9. The cleaning device according to any one of claims 1 to 8, characterized in that Also includes: The heater is installed in the area of the air duct located on the side of the inner tank, and the side plate is installed on the side wall of the inner tank, and is covered outside at least part of the air duct.

10. The cleaning device according to any one of claims 1 to 9, characterized in that The power of the heater is P, which satisfies: P≤500WP≤500W.

11. The cleaning device according to any one of claims 1 to 10, 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.

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.

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