Cleaning device

Abstract

The invention discloses cleaning equipment, and belongs to the field of cleaning equipment. The cleaning equipment comprises an inner container, an exhaust assembly, an air duct, a fan and a heater. A cleaning cavity is formed in the inner container; the exhaust assembly is installed in the inner container and is configured to exhaust gas in the cleaning cavity under the condition that the exhaust assembly is opened. The air duct is installed in the inner container and provided with an air inlet and an air outlet which communicate with the cleaning cavity. The fan is configured to drive gas in the air duct under the starting condition; the heater is configured to heat gas flowing through the air duct under the condition of starting; wherein the distance from the center of the air inlet to the back plate of the cleaning cavity is d2, the depth of the cleaning cavity in the front-back direction is D0, the distance from the center of the inlet of the fan to the edge of the fan is d5, and d2 is larger than or equal to d5 and smaller than or equal to 0.5 D0. The utilization rate of hot air heat energy is improved, the energy consumption of the cleaning equipment in a hot air drying working mode is reduced, and the influence of the air inlet on push-pull of the bowl basket can be reduced, so that the depth of the bowl basket is increased, and the containing capacity of the bowl basket is improved.

Description

Technical Field

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

[0002] The drying methods of cleaning devices such as dishwashers include: condensation drying, hot air drying, adsorption drying, and quick drying with the door open, etc. Among them, condensation drying has problems such as poor drying effect and long drying time, adsorption drying has problems such as high cost and odor when stored for a long time, and quick drying with the door open has problems such as easy entry of insects and moisture return due to failure to automatically close the door in a timely manner in humid areas. Therefore, considering the comprehensive cost and drying effect, hot air drying has become the method chosen by most manufacturers.

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

[0004] However, the opening of the exhaust component will cause the thermal energy of the heated air to be discharged from the cleaning chamber without being fully utilized, resulting in problems such as high energy consumption, low drying efficiency, and poor drying effect, and it needs to be improved. Summary of the Invention

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

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

[0007] An inner container, forming a cleaning chamber;

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

[0009] An air duct, installed on the inner container and having an air inlet and an air outlet that are both communicated with the cleaning chamber;

[0010] A fan, configured to drive the gas in the air duct when it is turned on;

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

[0012] The distance from the center of the air inlet to the back plate of the cleaning chamber is d2, the depth of the cleaning chamber in the front-back direction is D0, and the distance from the center of the inlet of the fan to the edge of the fan is d5, satisfying: d5 ≤ d2 ≤ 0.5D0.

[0013] According to the cleaning device provided by the embodiment of the present application, on the one hand, by providing an internal circulation component such as an air duct, a fan, and a heater, both the air inlet and the air outlet of the air duct are communicated with 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 fan, and the hot air heated by the heater enters the cleaning chamber from the air outlet of the air duct. The dry gas in the cleaning chamber is circularly heated by the heater to realize hot air drying of the tableware in the cleaning chamber. Compared with the cleaning device that performs hot air drying through external circulation, the internal circulation drying working mode improves the utilization rate of hot air heat energy, reduces the energy consumption of the hot air drying working mode of the cleaning device, and realizes energy saving. On the other hand, by limiting that the distance d2 from the center of the air inlet to the back plate of the cleaning chamber satisfies: d5 ≤ d2 ≤ 0.5D0, the center of the air inlet can be located in the rear half of the whole cleaning device, so as to reduce the influence of the air inlet on the pushing and pulling of the bowl basket, increase the depth of the bowl basket, and improve the accommodation capacity of the bowl basket.

[0014] According to an embodiment of the present application, the air inlet is provided on the top wall of the cleaning chamber, and the air outlet is located at the lower part of the side surface of the cleaning chamber.

[0015] According to an embodiment of the present application, the air inlet is provided in the area of the top wall of the cleaning chamber close to the side surface and the back plate.

[0016] According to an embodiment of the present application, the fan is installed above the top wall of the inner container, and at least part of the air duct is located above the top wall of the inner container and outside the side wall.

[0017] According to an embodiment of the present application, the fan includes: an upper shell, an impeller, and a motor assembly. The motor assembly is power-coupled to the impeller. The upper shell is connected to the air duct to form a receiving cavity, and the impeller is installed in the receiving cavity.

[0018] According to an embodiment of the present application, it further includes: a side plate. The heater is installed in the area of the air duct located on the side surface of the inner container. The side plate is installed on the side wall of the inner container and covers at least part of the air duct.

[0019] According to an embodiment of the present application, there is a gap between the inner side surface of the side plate and the air duct, and the gap is c, satisfying c ≥ 2 mm.

[0020] According to an embodiment of the present application, the power of the heater is P, satisfying: P ≤ 500 W.

[0021] According to an embodiment of the present application, when the exhaust component is operating, the exhaust volume of the exhaust component is not less than the amount of gas entering the cleaning chamber from the outside.

[0022] According to an embodiment of the present application, the air duct includes a makeup air branch. The makeup air inlet of the makeup air branch communicates with the outside, and the makeup air outlet of the makeup air branch communicates with the cleaning chamber. When the exhaust component and the fan are operating, the exhaust volume of the exhaust component is not less than the makeup air volume of the makeup air branch.

[0023] According to an embodiment of the present application, the cleaning device has an internal circulation drying working mode. In the internal circulation drying working mode, the fan and the heater are operating, and the exhaust component is stopped;

[0024] And / or, the cleaning device has a moisture exhaust negative pressure working mode. In the moisture exhaust negative pressure working mode, the fan and the heater are stopped, and the exhaust component is operating;

[0025] And / or, the cleaning device has a mixed working mode; in the mixed working mode, the fan, the heater, and the exhaust component are all operating;

[0026] And / or, the cleaning device has a mixed moisture exhaust working mode; in the mixed moisture exhaust working mode, the fan and the exhaust component are both operating, and the heater is stopped.

[0027] The additional aspects and advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. Description of the Drawings

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0029] Figure 1 is one of the structural schematic diagrams of the cleaning device provided by the embodiment of the present application;

[0030] Figure 2 is another structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0031] Figure 3 is one of the structural schematic diagrams of the internal circulation component provided by the embodiment of the present application;

[0032] Figure 4 is another structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0033] Figure 5It is the fourth structural schematic diagram of the cleaning device provided by the embodiments of the present application;

[0034] Figure 6 It is the second structural schematic diagram of the internal circulation component provided by the embodiments of the present application;

[0035] Figure 7 It is the fifth structural schematic diagram of the cleaning device provided by the embodiments of the present application;

[0036] Figure 8 It is Figure 7 The partial enlarged view at position B in

[0037] Figure 9 It is the sixth structural schematic diagram of the cleaning device provided by the embodiments of the present application;

[0038] Figure 10 It is Figure 9 The partial enlarged view at position A in

[0039] Figure 11 It is the seventh structural schematic diagram of the cleaning device provided by the embodiments of the present application;

[0040] Figure 12 It is the eighth structural schematic diagram of the cleaning device provided by the embodiments of the present application;

[0041] Figure 13 It is the ninth structural schematic diagram of the cleaning device provided by the embodiments of the present application;

[0042] Figure 14 It is the tenth structural schematic diagram of the cleaning device provided by the embodiments of the present application;

[0043] Figure 15 It is the third structural schematic diagram of the internal circulation component provided by the embodiments of the present application;

[0044] Figure 16 It is the structural schematic diagram of the flexible connector provided by the embodiments of the present application;

[0045] Figure 17 It is the structural schematic diagram of the lower air duct provided by the embodiments of the present application;

[0046] Figure 18 It is the structural schematic diagram of the upper air duct provided by the embodiments of the present application;

[0047] Figure 19 It is the structural schematic diagram of the main body provided by the embodiments of the present application;

[0048] Figure 20 It is the eleventh structural schematic diagram of the cleaning device provided by the embodiments of the present application;

[0049] Figure 21 It is Figure 20Partial enlarged view at D in the [figure];

[0050] Figure 22 It is the twelfth structural schematic diagram of the cleaning device provided by an embodiment of the present application;

[0051] Figure 23 Is Figure 22 Partial enlarged view at C in the [figure];

[0052] Figure 24 It is the thirteenth structural schematic diagram of the cleaning device provided by an embodiment of the present application;

[0053] Figure 25 Is Figure 22 Partial enlarged view at E in the [figure];

[0054] Figure 26 It is one of the structural schematic diagrams of the water baffle provided by an embodiment of the present application;

[0055] Figure 27 It is the second structural schematic diagram of the water baffle provided by an embodiment of the present application;

[0056] Figure 28 It is the third structural schematic diagram of the water baffle provided by an embodiment of the present application;

[0057] Figure 29 It is the fourth structural schematic diagram of the water baffle provided by an embodiment of the present application;

[0058] Figure 30 It is the fifth structural schematic diagram of the water baffle provided by an embodiment of the present application;

[0059] Figure 31 It is the sixth structural schematic diagram of the water baffle provided by an embodiment of the present application.

[0060] Reference numerals:

[0061] Inner container 1, cleaning chamber 11, first side 111, second side 112; top wall 12, mounting boss 121, side wall 13, back plate 14, front end opening 15, bottom wall 16;

[0062] Inner circulation component 2, air inlet end 20, flanging 201; air duct 21, air inlet 211, air outlet 212, air supply branch 213, air supply inlet 2131, upper air duct 214, horizontal section 2141, lower connection section 2142, first connection structure 2143; fan installation position 2146, first air guiding section 2147, volute tongue 2148, arc section 21481, straight section 21482; second air guiding section 2149;

[0063] Lower air duct 215, expansion section 2154, partition plate 2155; grille 2156;

[0064] Main body part 2158, upper connection section 21581, air duct shell 21582, third connection structure 21583, heat sink 21584, heater installation position 21585, thermostat installation position 21586, cover body 2157, fourth connection structure 21571;

[0065] Flexible connector 217, cover plate 2171, second connection structure 21711, sleeve 2172, avoidance hole 2173;

[0066] Fan 22, upper shell 221, impeller 222; Heater 23, water baffle cover 24, water baffle 241, annular rib 2411, installation structure 242, card slot 2421, connector 2422, hollow slot 24221, card joint 2423;

[0067] Main cover body 243, pipe body 2431, ventilation duct 2432, flange 2433, sealing installation position 24331, protruding part 24332, reinforcing rib 24333, water diversion port 2434; Water baffle member 244, first plate 2441, second plate 2442, diversion surface 2443; Sealing device 25, thermostat 29;

[0068] Side plate 3, exhaust assembly 4, air inlet 41, bowl basket 5. Detailed implementation manners

[0069] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0070] Reference will be made below Figures 1 - 31 to describe a cleaning device according to an embodiment of the present application. The cleaning device of the present application can clean and dry various items such as tableware or clothes.

[0071] Among them, the cleaning device can be a device with a hot air drying function such as a dishwasher, a clothes dryer or a shoe washing machine. In the embodiments of the present invention, the cleaning device includes a cleaning function and a hot air drying function. The cleaning mechanism in the cleaning function cleans the items in the cleaning chamber, and after the cleaning is completed, the hot air drying process is started to dry the items in the cleaning chamber, which can reduce the growth of bacteria. For the convenience of description, the present application will be described by taking a dishwasher as an example.

[0072] As Figure 1 , Figure 2 and Figure 3 shown, the cleaning device of the embodiment of the present application includes: an inner container 1, an exhaust assembly 4, an air duct 21, a fan 22 and a heater 23.

[0073] The inner container 1 forms a cleaning chamber 11; the exhaust assembly 4 is installed on the inner container 1 and is configured to discharge the gas in the cleaning chamber 11 when it is turned on; the air duct 21 is installed on the inner container 1 and has an air inlet 211 and an air outlet 212 both communicating with the cleaning 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 distance from the center of the air inlet 211 to the back plate 14 of the cleaning chamber 11 is d2, the depth of the cleaning chamber 11 in the front-back direction is D0, and the distance from the center of the inlet of the fan 22 to the edge of the fan 22 is d5, satisfying: d5 ≤ d2 ≤ 0.5D0.

[0074] Wherein, as Figure 1 shown, the inner container 1 includes a top wall 12, a bottom wall 16, a back plate 14, side walls 13 and a front opening 15. The top wall 12, the bottom wall 16, the back plate 14 and the side walls 13 of the inner container 1 enclose the cleaning chamber 11. The top wall 12 of the inner container 1 is the top wall 12 of the cleaning chamber 11, the side walls 13 of the inner container 1 are the sides of the cleaning chamber 11, the back plate 14 of the inner container 1 is the back of the cleaning chamber 11, and the bottom wall 16 of the inner container 1 is the bottom surface of the cleaning chamber 11.

[0075] The cleaning device may further include a cover plate, which is pivotally connected to the inner container 1 and can rotate relative to the inner container 1 to open and close the front opening 15 of the inner container 1, so as to facilitate putting in or taking out items from the cleaning chamber 11. The cover plate and the top wall 12, the bottom wall 16, the back plate 14 and the side walls 13 of the inner container 1 enclose the cleaning chamber 11.

[0076] Wherein, the cleaning chamber 11 is used to place items to be cleaned. The items to be cleaned can be washed and dried in the cleaning chamber 11. The items to be cleaned can be tableware such as bowls, chopsticks, plates and pots.

[0077] As Figure 1 shown, the cleaning chamber 11 may have an item placement rack. The item placement rack may include brackets such as a bowl basket 5, a chopstick rack and a cup rack. The item placement rack can fix and support the tableware, and at the same time can also divide the space of the cleaning chamber 11, increasing the space utilization rate of the cleaning chamber 11.

[0078] The cleaning chamber 11 may also have a spray arm. The spray arm is used to spray high-pressure water flow. The high-pressure water flow can spray and flush the tableware in the cleaning chamber 11 to wash off the dirt attached to the tableware, thereby realizing the flushing of the tableware. Multiple spray arms may be provided, and the multiple spray arms may be installed at different positions of the cleaning chamber 11 to spray the tableware in multiple directions, at multiple angles and at multiple levels, improving the cleaning effect of the tableware.

[0079] Among them, the air duct 21 can be used to realize the circulation of air in the cleaning chamber 11. For example, it can realize internal air circulation, external air circulation, or a mixture of internal and external air circulation.

[0080] The air duct 21 can be installed on the outer side or the inner side of the inner container 1, and the air duct 21 can be connected to the wall surface of the inner container 1 by means of snap connection, threaded connection, welding, etc.

[0081] As Figure 1 shown, the air duct 21 has an air inlet 211 and an air outlet 212 that are both connected to the cleaning chamber 11. The gas in the cleaning chamber 11 is sucked into the air duct 21 from the air inlet 211 of the air duct 21 by the fan 22, and the hot air heated by the heater 23 enters the cleaning chamber 11 from the air outlet 212 of the air duct 21. The hot air can hot air dry items such as tableware in the cleaning chamber 11.

[0082] The air duct 21 has an air inlet 211 connected to the cleaning chamber 11 and an air outlet 212 connected to the cleaning chamber 11. The air inlet 211 and the air outlet 212 can be located on the same wall surface of the inner container 1 or on different wall surfaces of the inner container 1, and are specifically set according to the use 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 use scenario. For example, as Figure 1 shown, the number of air outlets 212 can be set to two, as Figure 4 shown, the number of air outlets 212 can be set to one.

[0083] In the drying working mode of the cleaning device, the dry gas in the cleaning chamber 11 is cyclically heated by the heater 23 to reach a suitable temperature and humidity to hot air dry the tableware in the cleaning chamber 11.

[0084] Among them, 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 to drive the gas in the air duct 21 through the fan 22. The fan 22 drives the gas 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 gas in the cleaning chamber 11 is sucked into the air duct 21 by the fan 22, heated by the heater 23, and then driven by the fan 22 to be discharged into the cleaning chamber 11 from the air duct 21, forming an internal circulation.

[0085] The fan 22 is connected to the air inlet 211 of the air duct 21 so that the fan 22 sucks the gas in the cleaning chamber 11 into the air duct 21 when it is turned on. The fan 22 can be installed at the air inlet 211, the air outlet 212 of the air duct 21, or between the air inlet 211 and the air outlet 212 of the air duct 21. The fan 22 can be a centrifugal air supply device, an exhaust fan, a ventilation air supply device, or other devices that can drive the flow of gas.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] Among them, the internal circulation component 2 and the exhaust component 4 can be operated in a jointly opened or individually opened manner.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] In this embodiment, if Figure 2 As shown, the distance d2 from the center of the air inlet 211 to the back plate 14 of the cleaning chamber 11 satisfies: d5≤d2≤0.5D0.

[0095] Among them, d2 can be d5, 0.2D0, 0.4D0 or 0.5D0, that is, the center of the air inlet 211 is located in the rear half of the whole cleaning device, so as to reduce the influence of the air inlet 211 on the pushing and pulling of the bowl basket 5, increase the depth of the bowl basket 5, and improve the accommodation capacity of the bowl basket 5.

[0096] In this embodiment, when d2 = d5, the air inlet 211 of the air duct 21 coincides with the inlet of the fan 22, and the edge of the fan 22 is closely attached to the back plate 14 of the cleaning device; when d2 > d5, the air inlet 211 of the air duct 21 does not coincide with the inlet of the fan 22, and the edge of the fan 22 is spaced from the back plate 14 of the cleaning device.

[0097] According to the cleaning device provided by the embodiment of the present application, on the one hand, by arranging the internal circulation components 2 such as the air duct 21, the fan 22 and the heater 23, both the air inlet 211 and the air outlet 212 of the air duct 21 are communicated with the cleaning chamber 11. The gas in the cleaning chamber 11 is sucked into the air duct 21 from the air inlet 211 of the air duct 21 by the fan 22, and the hot air heated by the heater 23 enters the cleaning chamber 11 from the air outlet 212 of the air duct 21. The dry gas in the cleaning chamber 11 is circularly heated by the heater 23 to realize hot air drying of the tableware in the cleaning chamber 11. Compared with the cleaning device that performs hot air drying through external circulation, the internal circulation drying working mode improves the utilization rate of hot air heat energy, reduces the energy consumption of the hot air drying working mode of the cleaning device, and realizes energy saving; on the other hand, by limiting that the distance d2 from the center of the air inlet 211 to the back plate 14 of the cleaning chamber 11 satisfies: d5 ≤ d2 ≤ 0.5D0, the center of the air inlet 211 can be located in the rear half of the whole cleaning device, so as to reduce the influence of the air inlet 211 on the pushing and pulling of the bowl basket 5, increase the depth of the bowl basket 5, and improve the accommodation capacity of the bowl basket 5.

[0098] In some embodiments, as Figure 1 , Figure 4 and Figure 5 shown, the air inlet 211 of the air duct 21 is located on the top wall 12 of the cleaning chamber 11, and the air outlet 212 of the air duct 21 is located at the lower part of one side surface of the cleaning chamber 11.

[0099] Among them, since the air inlet 211 is above the top wall 12 of the inner container 1 and the air outlet 212 is on the side wall 13 of the inner container 1, at least part of the air duct 21 is bent, and the bending angle of the air duct 21 can be determined according to the included angle between the top wall 12 of the inner container 1 and the side wall 13 of the inner container 1. For example, the bending angle can be 90° to connect the air outlet 212 and the air inlet 211 located on different surfaces.

[0100] Among them, the air inlet 41 of the exhaust component 4 and the air inlet 211 of the air duct 21 can both be located on the top wall 12 of the cleaning chamber 11, or the air inlet 41 of the exhaust component 4 and the air outlet 212 of the air duct 21 can both be located on the same side, or the air inlet 41 of the exhaust component 4, the air inlet 211 of the air duct 21 and the air outlet 212 of the air duct 21 can be located on different surfaces.

[0101] In this embodiment, the air outlet 212 of the air duct 21 is close to the bottom of the cleaning chamber 11, and the air inlet 211 of the air duct 21 is located on the top wall 12 of the cleaning chamber 11, that is, the air outlet 212 of the air duct 21 and the air inlet 211 of the air duct 21 are staggered in the vertical and left and right directions of the cleaning chamber 11, and the hot air circulates upward from a position close to 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 airflow, which is conducive to drying the entire chamber and reducing drying dead corners; on the other hand, it can reduce the water vapor 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; on the third hand, it can extend the path of the gas heated by the heater 23 in the cleaning chamber 11, thereby reducing the energy consumption of the hot air drying working mode of the cleaning equipment, improving the utilization efficiency of the hot air thermal energy, and achieving energy saving.

[0102] In some embodiments, as Figure 7 and Figure 9 As shown, 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 .

[0103] 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.

[0104] In some embodiments, as Figure 2 As shown, the cleaning chamber 11 has a first side surface 111 and a second side surface 112 arranged opposite to each other, the air outlet 212 of the air duct 21 is located on the second side surface 112, and the distance from the center of the air inlet 211 of the air duct 21 to the second side surface 112 is smaller than the distance from the center of the air inlet 211 to the first side surface 111.

[0105] In this embodiment, the exhaust component 4 can be installed on the first side 111, and the exhaust component 4 and the air outlet 212 are respectively located on the first side 111 and the second side 112 which are relatively set, and the air inlet 211 is located near the second side 112 where the air outlet 212 is located, that is, the air inlet 211 is away from the exhaust component 4.

[0106] By arranging the exhaust component 4 and the air outlet 212 on the relatively arranged sides and setting the air inlet 211 away from the exhaust component 4, when the exhaust component 4 and the fan 22 work simultaneously, the flow path of the gas heated by the heater 23 in the cleaning chamber 11 can be extended, the utilization efficiency of the hot air heat energy can be improved, the energy consumption of the hot air drying working mode of the cleaning device can be reduced, energy conservation can be achieved, and at the same time, the uniformity of the gas mixing in the cleaning chamber 11 can be improved, and the drying dead angle can be reduced.

[0107] In some embodiments, as Figure 1 、 Figure 3 and Figure 11 shown, the fan 22 is installed above the top wall 12 of the inner tank 1, and at least part of the air duct 21 is located above the top wall 12 of the inner tank 1 and outside the side wall 13.

[0108] Among them, since the air inlet 211 is located above the top wall 12 of the inner tank 1, the air outlet 212 is located on the side wall 13 of the inner tank 1, at least part of the air duct 21 is bent, and the bending angle of the air duct 21 can be determined according to the included angle between the top wall 12 of the inner tank 1 and the side wall 13 of the inner tank 1. For example, the bending angle can be 90°, so as to connect the air outlet 212 and the air inlet 211 located on different surfaces.

[0109] The air duct 21 is located outside the inner tank 1 and does not occupy the internal space of the cleaning chamber 11, thereby increasing the capacity of the cleaning chamber 11.

[0110] Among them, the fan 22 can be installed above the top wall 12 of the cleaning chamber 11, the air suction side of the fan 22 faces the inside of the cleaning chamber 11, and when the fan 22 operates, the hot air at the upper part of the cleaning chamber 11 can be introduced into the lower part of the cleaning chamber 11 through the air duct 21, which is beneficial to the uniformity of the temperature distribution in the whole cleaning chamber 11.

[0111] In actual use, when the cleaning device is matched with an automatic door opening or automatic door opening and closing scheme 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 prevent a large amount of humid hot air from remaining above the cleaning chamber 11, reduce the drying dead angle, and is beneficial to improving the overall drying effect and rate.

[0112] In this embodiment, the fan 22 can be installed above the top wall 12 of the cleaning chamber 11, and 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 applicable to various sizes between the inner tank 1 and the top shell of the cleaning device, increase the circulating air volume, and thus improve the power of the higher heater 23 and the better drying effect.

[0113] In some embodiments, the blower 22 can also be optionally installed below the bottom wall 16 of the inner tank 1.

[0114] It should be noted that the distance from the bottom plate of the cleaning device 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 device is greater than the installation space of the top plate. A larger-sized blower 22 can be installed, and the circulating air volume can be further increased at the same noise level, which is beneficial to the overall drying effect and shortens the drying time.

[0115] In some embodiments, such as Figure 8 and Figure 10 As shown, the blower 22 includes: an upper shell 221, an impeller 222, and a motor assembly. The motor assembly is power-coupled to the impeller 222. The upper shell 221 is connected to the air duct 21 to form a receiving cavity, and the impeller 222 is installed in the receiving cavity.

[0116] The air duct 21 includes a bottom shell. There is a blower 22 installation position in the air duct 21 that matches the size of the upper shell 221. The upper shell 221 is connected to the bottom shell of the air duct 21 to form a receiving cavity. The blower 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 blower 22. Through the structure of assembling the blower 22 with the air duct 21, the installation space of the blower 22 can be increased, and the power of the blower 22 that can be installed can be improved.

[0117] In this embodiment, the blower 22 is installed above the top wall 12 of the inner tank 1 installed. The blower 22 can only retain the upper shell 221, the impeller 222, and the motor assembly, omitting the original lower shell of the blower 22, reducing the overall size of the blower 22. A larger model of the blower 22 can be installed in the same space, and the air duct 21 replaces the lower shell of the blower 22, directly installing the impeller 222 in the air duct 21, increasing the air inlet area of the air inlet 211 and increasing the air intake volume.

[0118] In some embodiments, such as Figure 3 and Figure 8 As shown, a sealing device 25 is provided between the blower 22 and the air duct 21. The sealing device 25 can be a sealing ring, tape, filling glue, etc., to seal the gap between the inner tank 1, the blower 22, and the air duct 21 of the cleaning device.

[0119] 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 blower 22, and a sealing method is adopted in the middle. During the operation of the entire cleaning device, the inner tank 1, the blower 22, and the air duct 21 of the cleaning device belong to a closed space, which can reduce the amount of water vapor leaking out through the installation gap between the blower 22 and the air duct 21 at each stage and reduce potential hazards.

[0120] In some embodiments, such as Figure 3As shown, a sealing device 25 and a nut are provided at both the air inlet 211 and the air outlet 212 of the air duct 21. The nut is screwed and tightened in a snap - fit form to compress the sealing device 25. The sealing device 25 is located between the air duct 21 and the inner tank 1, reducing the leakage of water in the cleaning chamber 11 from the gap between the air duct 21 and the inner tank 1, reducing the risk of water leakage, and improving the reliability of the cleaning device.

[0121] In some embodiments, as Figure 12 and Figure 13 shown, the cleaning device further includes: a side plate 3. The heater 23 is installed in the area of the air duct 21 on the side of the inner tank 1. The side plate 3 is installed on the side wall 13 of the inner tank 1 and covers at least a part of the outside of the air duct 21.

[0122] In this embodiment, the side plate 3 is installed outside the side wall 13 of the inner tank 1. The inner side surface of the side plate 3 is spaced apart from the air duct 21, and the inner side surface of the side plate 3 is spaced apart from the heater 23.

[0123] Among them, the heater 23 and at least part of the air duct 21 are located between the side plate 3 and the inner tank 1. The side plate 3 can protect the heater 23 and at least part of the air duct 21. At the same time, it can reduce the risk of people touching the strong - electricity components and high - temperature heating components, improving safety.

[0124] In some embodiments, as Figure 13 shown, the inner side surface of the side plate 3 is spaced apart from the air duct 21, and the spacing is c. The spacing c satisfies: c≥2mm.

[0125] Among them, the spacing c between the inner side surface of the side plate 3 and the air duct 21 can be 2mm, 4mm, 7mm or a wider distance.

[0126] In other words, the side plate 3 is installed outside the side wall 13 of the inner tank 1, and the inner side surface of the side plate 3 is spaced apart from the air duct 21 and the heater 23.

[0127] It can be understood that the heater 23 is installed in the area of the air duct 21 on the side wall 13 of the inner tank 1. In some embodiments, components such as a thermostat are also installed in the air duct 21. The heating tube generates a large amount of heat, and both the heating tube and the thermostat contain strong - electricity terminals, and the strong - electricity terminals are directly connected to the strong electricity.

[0128] Under the condition of ensuring grounding, by installing the side plate 3 and setting the spacing between the inner side surface of the side plate 3 and the air duct 21, on the one hand, it can avoid the side plate 3 directly touching the strong - electricity and high - temperature heating components, improving the safety of the cleaning device; on the other hand, it can control the wall temperature outside the side plate 3 within a safe range, reducing the risk of people being scalded when touching the side wall 13. In the embedded installation of the cleaning device, it can reduce the high - temperature damage of the inner wall of the installation cabinet by the side plate 3.

[0129] In some embodiments, the power of the heater 23 is P, satisfying: P ≤ 500W.

[0130] Among them, the power P of the heater 23 can be 150W, 200W, 350W, 400W or 500W, and can be specifically limited according to the usage situation.

[0131] In the related art, due to the limited installation position of the cleaning device in the external circulation hot air drying mode, the size of the fan and the power of the heater are small, and the hot air drying can only be used as an auxiliary energy source, while the high-temperature rinsing is the main energy source. Therefore, the tableware washed by hand needs a relatively long time for single drying operation, which is not convenient.

[0132] This application uses the internal circulation hot air drying mode, increases the power of the heater 23, sets the power of the heater 23 as P, can use the hot air drying as the main energy source, and converts the high-temperature rinsing into an auxiliary energy source, significantly shortening the drying time of the tableware and improving the convenience.

[0133] In some embodiments, when the exhaust component 4 is working, the exhaust volume of the exhaust component 4 is not less than the amount of gas entering the cleaning chamber 11 from the outside.

[0134] It should be noted that in actual use, it is impossible to completely seal the cleaning chamber 11, and there is still a small amount of gas exchange between the cleaning chamber 11 and the outside. When the exhaust volume of the exhaust component 4 is not less than the amount of gas entering the cleaning chamber 11 from the outside, the cleaning chamber 11 is in an atmospheric pressure or negative pressure environment, and the negative pressure environment is helpful for improving the drying rate.

[0135] In this embodiment, when only the exhaust component 4 is working, due to the lack of sufficient replenishment of external air, the inside of the cleaning chamber 11 is pumped into a negative pressure state by the exhaust component 4, and the negative pressure environment is helpful for improving the drying rate.

[0136] 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, making the temperature and humidity distribution in the cleaning chamber 11 uniform, and further improving the effect of uniform drying of the whole chamber.

[0137] In some embodiments, as Figure 1 and Figure 5 shown, the air duct 21 includes a makeup air branch 213. The makeup air inlet 2131 of the makeup air branch 213 is communicated with the outside, and the makeup air outlet of the makeup air branch 213 is communicated with 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 makeup air volume of the makeup air branch 213.

[0138] The air duct 21 includes two branches, an internal circulation and an external circulation. The air inlet 2131 of the air supply branch 213 is connected to the outside, 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. Figure 6 In the figure, hollow arrows indicate external circulation, and solid arrows indicate internal circulation.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] In some embodiments, as Figure 3 and Figure 8As shown, the cleaning device further includes a water baffle 24, and the water baffle 24 is installed at the air inlet 211.

[0145] The water baffle 24 has the functions of ventilation and water blocking. The water baffle 24 can be arranged between the fan 22 and the cleaning chamber 11, and the water baffle 24 is located inside the cleaning chamber 11. When the fan 22 is turned on, the fan 22 can draw the gas in the cleaning chamber 11 into the installation position of the fan 22 through the water baffle 24. At the same time, the water baffle 24 can reduce the direct impact and sputtering of water flow on the fan 22 and the heater 23 in the air duct 21, playing a protective role.

[0146] The water baffle 24 can be connected to the air inlet 211 by connection methods such as threaded connection, plug-in connection, pivot connection or snap connection.

[0147] In some embodiments, a grille 2156 is provided at the air outlet 212.

[0148] Among them, the grille 2156 is used for guiding the air flow. The grille 2156 can introduce the air flow at the air outlet 212 into different directions. The diversion direction of the grille 2156 can be determined according to the installation position of the exhaust assembly 4 and the installation position of the air inlet 211 of the air duct 21.

[0149] For example, if the air inlet 211 of the air duct 21 is arranged on the top wall 12 of the cleaning chamber 11, the grille 2156 can appropriately direct the hot air downward in the cleaning chamber 11, so as to extend the flow path of the hot air in the cleaning chamber 11, increase the area of the gas heated by the heater 23 flowing through the entire cleaning chamber 11, and improve the full-chamber drying and dead-angle drying effects of the cleaning chamber 11.

[0150] For example, if the exhaust assembly 4 is located in the upper left part of the cleaning chamber 11, the grille 2156 can appropriately direct the hot air downward to the rear side of the cleaning chamber 11, so as to extend the flow path of the hot air in the cleaning chamber 11, increase the area of the gas heated by the heater 23 flowing through the entire cleaning chamber 11, improve the full-chamber drying and dead-angle drying effects of the cleaning chamber 11, and reduce the air volume of the hot air discharged by the exhaust assembly 4 without being utilized, increasing the utilization efficiency of the hot air heat energy.

[0151] Among them, the grille 2156 can also reduce the direct impact of water flow on the air duct 21 and play a protective role for the air duct 21.

[0152] In some embodiments, the cleaning device has at least the following working modes:

[0153] First, the cleaning device has an internal circulation drying working mode.

[0154] In the internal circulation drying working mode, the blower 22 and the heater 23 operate, and the exhaust assembly 4 stops. The gas in the cleaning chamber 11 is sucked into the air duct 21 by the blower 22 from the air inlet 211 of the air duct 21. The hot air heated by the heater 23 enters the cleaning chamber 11 from the air outlet 212 of the air duct 21. The air in the cleaning chamber 11 is circulated and heated, and the heat is evenly distributed. The relatively cold areas in the cleaning chamber 11 can be evaporated and dried faster through heat transfer and convective heat transfer, which is beneficial to the drying of the entire cavity in the cleaning chamber 11 and reduces the drying dead corners.

[0155] When the temperature and humidity in the cleaning chamber 11 are too low, forced convection and circulating heating in the cleaning chamber 11 can be achieved by turning on the blower 22 and the heater 23, accelerating the evaporation of the remaining water in the cleaning chamber 22.

[0156] Second, the cleaning device has a moisture exhaust negative pressure working mode;

[0157] In the moisture exhaust negative pressure working mode, the blower 22 and the heater 23 stop, and the exhaust assembly 4 operates. Due to the lack of external air supplement, the cleaning chamber 11 is drawn into a negative pressure state by the exhaust assembly 4, and the negative pressure environment also helps to improve the drying rate.

[0158] Third, the cleaning device has a mixed working mode;

[0159] In the mixed working mode, the blower 22, the heater 23, and the exhaust assembly 4 all operate. The blower 22 can circulate the air in the cleaning chamber 11, making the temperature and humidity distribution in the cleaning chamber 11 uniform, and further improving the effect of uniform drying of the entire cavity.

[0160] Fourth, the cleaning device has a mixed moisture exhaust working mode;

[0161] In the mixed moisture exhaust working mode, the blower 22 and the exhaust assembly 4 both operate, and the heater 23 stops, so as to realize the mixing and moisture exhaust of the air in the cleaning chamber 11, and further improve the effect of uniform moisture exhaust of the entire cavity.

[0162] Such as Figure 14 and Figure 15 As shown, the cleaning device of the embodiment of the present application further includes an air duct structure, and the air duct structure includes: an upper air duct 214, a flexible connector 217, and a lower air duct 215.

[0163] 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.

[0164] Among them, the gas enters the duct structure from the air inlet 211 of the duct structure, flows through the upper duct 214, the flexible connector 217 and the lower duct 215 in sequence, and finally flows out from the air outlet 212 of the duct structure. The air inlet 211 of the duct structure is communicated with the air inlet 41 of the fan 22.

[0165] Among them, both ends of the flexible connector 217 are respectively connected to the lower port of the upper duct 214 and the upper port of the lower duct 215. The flexible connector 217 can be connected to the lower port of the upper duct 214 and the upper port of the lower duct 215 by detachable connection methods such as plug-in connection, clamp connection or fixture connection.

[0166] The flexible connector 217 can be a connection structure with deformable performance, such as a flexible joint composed of one or a combination of materials among metal, plastic and rubber.

[0167] By setting the detachable connection method between the flexible connector 217 and the lower port of the upper duct 214 and the upper port of the lower duct 215, it is convenient to replace the combination of the upper duct 214 and the lower duct 215 of different types and sizes, and the included angle relationship between the upper duct 214 and the lower duct 215 can be changed by bending the flexible connector 217, so that the duct structure can be installed in the inner tank 1 of cleaning devices with various heights.

[0168] In the related art, in order to extend the circulation path of the hot air during the hot air drying in the cleaning chamber 11, make full use of the heat energy of the hot air, and improve the full-chamber drying and dead-angle drying effects of the cleaning chamber 11, usually the installation plane of the fan 22 and the inner circulation outlet of the cleaning chamber 11 are arranged on different surfaces of the cleaning chamber 11. However, the applicant has found through research that when the installation plane of the fan 22 and the inner circulation outlet of the cleaning chamber 11 are located on different surfaces, when the cleaning chamber 11 and the duct structure are assembled, tolerance and sealing problems will occur, and the assembly difficulty and the later use effect are poor.

[0169] The duct structure of the embodiment of the present application, by setting the split structure of the upper duct 214 and the lower duct 215, with the flexible connector 217 between the upper duct 214 and the lower duct 215, and the air inlet 211 and the air outlet 212 of the duct structure are not coplanar, can be adapted to cleaning devices in which the installation plane of the fan 22 and the inner circulation outlet of the cleaning chamber 11 are located on different surfaces. And when assembling with this cleaning device, the tolerance generated during the production of the inner tank 1 can be compensated by replacing the upper duct 214 and the lower duct 215 of different lengths and sizes, reducing the assembly difficulty, and at the same time can be adapted to cleaning devices of different heights, improving the reliability of use and the usage scenarios.

[0170] In some embodiments, such as Figure 16As shown, 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. An air inlet 211 is provided on the lower surface of the horizontal section 2141, and the flexible connector 217 is connected to the lower connecting section 2142.

[0171] Among them, the horizontal section 2141 and the lower connecting section 2142 are respectively located on different surfaces of the cleaning chamber 11. By providing the downward-extending lower connecting section 2142, the upper air duct 214 can be distributed on different surfaces, so as to adapt to a cleaning device in which the installation plane of the fan 22 and the inner circulation outlet of the cleaning chamber 11 are located on different surfaces.

[0172] In some embodiments, as Figure 16 shown, the upper surface of the upper air duct 214 has an opening for installing the fan 22; the flexible connector 217 includes a connected cover plate 2171 and a sleeve 2172. The two ends of the sleeve 2172 are respectively sleeved on 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 outside the upper air duct 214 and closes the opening.

[0173] In this embodiment, the lower surface of the upper air duct 214 and the cover plate 2171 form a receiving cavity for installing the fan 22, and the cover plate 2171 can be connected to the opening of the upper air duct 214 by connection methods such as plug-in connection, snap connection or bolt connection.

[0174] Among them, the sleeve 2172 can be a connecting pipe made of rubber or plastic, and the two ends of the sleeve 2172 are respectively sleeved on the lower port of the upper air duct 214 and the upper port of the lower air duct 215.

[0175] In some embodiments, the two ends of the sleeve 2172 are respectively sleeved on the connecting section and the upper port of the lower air duct 215, and at least part of the cover plate 2171 is connected to the horizontal section 2141 and closes the opening.

[0176] Among them, the cover plate 2171 and the sleeve 2172 have at least the following two structural forms:

[0177] First, the cover plate 2171 is completely located on the side of the fan 22 in the cleaning chamber 11. The cover plate 2171 can be completely connected to the horizontal section 2141 of the upper air duct 214, and at least part of the sleeve 2172 extends into the side of the fan 22 in the cleaning chamber 11 and is connected to the cover plate 2171.

[0178] At least part of the sleeve 2172 is a flexible structure, so that one end of the sleeve 2172 can be bent and deformed toward the side of the cleaning chamber 11 where the upper port of the lower air duct 215 is located, and the other end is bent and deformed toward the other side of the cleaning chamber 11 where the lower port of the upper air duct 214 is located, so as to facilitate the sleeve 2172 to be sleeved on the lower port of the upper air duct 214 and the upper port of the lower air duct 215.

[0179] Second, a part of the cover plate 2171 covers the upper surface of the upper air duct 214, and a part covers the bent portion where the upper air duct 214 extends laterally.

[0180] In this embodiment, a part of the cover plate 2171 is located on the side of the fan 22 facing the cleaning chamber 11, and another part of the cover plate 2171 covers the bent portion where the upper air duct 214 extends laterally.

[0181] In this embodiment, at least a part of the cover plate 2171 is a flexible structure, so that after the two ends of the sleeve 2172 are respectively socketed with the lower port of the upper air duct 214 and the upper port of the lower air duct 215 on a certain side of the cleaning chamber 11, the cover plate 2171 can be bent and deformed toward the other side where the fan 22 is located, so as to cover the outside of the upper air duct 214 and close the open end.

[0182] In some embodiments, the two ends of the sleeve 2172 are respectively in interference fit with the lower port of the upper air duct 214 and the upper port of the lower air duct 215, so as to improve the sealing performance of the connection between the two ends of the sleeve 2172 and the lower port of the upper air duct 214 and the upper port of the lower air duct 215.

[0183] In some embodiments, as Figure 16 and Figure 17 shown, the side wall 13 of the upper air duct 214 is provided with a first connection structure 2143, and the cover plate 2171 is provided with a second connection structure 21711, and the first connection structure 2143 is connected to the second connection structure 21711.

[0184] Among them, the side wall 13 of the upper air duct 2l4 is assembled with the cover plate 2171, and the side wall 13 of the upper air duct 214 can be connected to the cover plate 2171 by connection methods such as bolt connection, snap connection or plug-in connection.

[0185] When the side wall 13 of the upper air duct 214 is connected to the cover plate 2171 by a plug-in connection method, 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, and the plug is inserted into the socket to connect the side wall 13 of the upper air duct 214 and the cover plate 2171 together.

[0186] When the side wall 13 of the upper air duct 214 is connected to the cover plate 2171 by a snap connection method, one of the first connection structure 2143 and the second connection structure 21711 is a fixed snap, and the other of the first connection structure 2143 and the second connection structure 21711 is a connecting member 2422, and the connecting member 2422 is inserted into the fixed snap to lock the side wall 13 of the upper air duct 214 and the cover plate 2171 together.

[0187] In some embodiments, the first connection structure 2143 cooperates with the second connection structure 21711. A plurality of first connection structures 2143 may be provided, and the number of the second connection structures 21711 is adapted to the number of the first connection structures 2143 to increase the connection stability between the side wall 13 of the upper air duct 214 and the cover plate 2171.

[0188] In some embodiments, the upper cover plate 2171 is made of rubber. The upper half of the upper cover plate 2171 can be bent and covered on the upper surface of the air duct 21, reducing problems such as the vibration of the motor assembly of the fan 22, the vibration between the fan 22 and the top outer plate, and the aerodynamics generated by the fan 22, and effectively reducing the noise index during the operation of the cleaning device.

[0189] In some embodiments, as Figure 15 shown, the lower air duct 215 includes: a main body portion 2158 and a cover body 2157; the upper end of the main body portion 2158 is connected to the flexible connector 217, at least part of the outer side surface of the main body portion 2158 is open, and an air outlet 212 is provided; the cover body 2157 is connected to the main body portion 2158 and closes the open part of the outer side surface of the main housing, and the cover body 2157 is made of a flexible material.

[0190] In this embodiment, the main body portion 2158 can be made of a lightweight material, such as hard plastic or metal, etc.; the cover body 2157 is made of a flexible material, such as rubber or plastic, etc.

[0191] Wherein, the main body portion 2158 and the cover body 2157 can be connected by connection methods such as plug-in connection, clamp connection or fixture connection, etc., for easy disassembly and replacement.

[0192] By providing the lower air duct 215 with a main body portion 2158 made of a hard material and a cover body 2157 made of a flexible material in cooperation, a better sealing effect can be produced, and the overall lower air duct 215 can reduce the risks of air leakage and water leakage, and improve the reliability of the air duct structure.

[0193] In some embodiments, a sealing strip can be provided between the main body portion 2158 and the cover body 2157 to further improve the sealing performance between the main body portion 2158 and the cover body 2157 and improve the reliability of the air duct structure.

[0194] In some embodiments, as Figure 19 shown, the main body portion 2158 includes: an upper connection section 21581 and an air duct shell 21582.

[0195] The lower end of the flexible connector 217 is sleeved on the upper connection section 21581; the air duct shell 21582 is connected to the upper connection section 21581, the outer side surface of the air duct shell 21582 is open, and an air outlet 212 is provided, and the cover body 2157 covers the air duct shell 21582.

[0196] Wherein, the lower end of the flexible connecting member 217 and the upper connecting section 21581 can be in an interference fit to improve the sealing performance of the connection between the lower end of the flexible connecting member 217 and the upper connecting section 21581.

[0197] In some embodiments, such as Figure 15 and Figure 18 as shown, a third connecting structure 21583 is provided on the outer peripheral wall of the upper connecting section 21581, an avoidance hole 2173 is provided at the lower end of the flexible connecting member 217, and a fourth connecting structure 21571 is provided on the cover body 2157. The third connecting structure 21583 passes through the avoidance hole 2173 and is connected to the fourth connecting structure 21571.

[0198] Wherein, the connection between the third connecting structure 21583 and the fourth connecting structure 21571 can be a snap connection, a threaded connection or a plug-in connection.

[0199] The third connecting structure 21583 passing through the avoidance hole 2173 can fix the connection between the flexible connecting member 217 and the upper connecting section 21581. The third connecting structure 21583 passing through the avoidance hole 2173 and being connected to the fourth connecting structure 21571 can fix the connection among the upper connecting section 21581, the cover body 2157 and the flexible connecting member 217.

[0200] In the case where the third connecting structure 21583 and the fourth connecting structure 21571 are snap-connected, the third connecting structure 21583 can be a fixed snap, and the fourth connecting structure 21571 can be a sliding snap. When the lower end of the flexible connecting member 217 is sleeved on the upper connecting section 21581, the third connecting structure 21583 passes through the avoidance hole 2173, and at least part of the third connecting structure 21583 can extend out of the avoidance hole 2173 to fix the connection between the flexible connecting member 217 and the upper connecting section 21581. The fourth connecting structure 21571 slides into the third connecting structure 21583 to fix the connection among the upper connecting section 21581, the cover body 2157 and the flexible connecting member 217.

[0201] In the case where the third connecting structure 21583 and the fourth connecting structure 21571 are threadedly connected, the third connecting structure 21583 can be a convex block with a threaded hole, and the fourth connecting structure 21571 can be a structure with a connecting member 2422 such as a bolt, a stud or a screw. When the lower end of the flexible connecting member 217 is sleeved on the upper connecting section 21581, the third connecting structure 21583 passes through the avoidance hole 2173, the threaded hole of the third connecting structure 21583 can extend out of the avoidance hole 2173, and the fourth connecting structure 21571 is threadedly connected to the third connecting structure 21583.

[0202] In some embodiments, such as Figure 19As shown, 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.

[0203] Among them, the heater mounting position 21585 is used to mount the heater 23, and the heater 23 can be mounted on the heater 23 through connection methods such as plug-and-play connection, threaded connection, or snap connection. The heater 23 is configured to heat the gas flowing through the lower air duct 215 when it is turned on.

[0204] The thermostat mounting position 21586 is used to mount the thermostat 29, and the thermostat 29 can be mounted on the thermostat mounting position 21586 through connection methods such as plug-and-play connection, threaded connection, or snap connection. The thermostat 29 is used to detect the temperature in the lower air duct 215 and control the overall working state of the cleaning device according to the detected temperature result.

[0205] Among them, both the heater mounting position 21585 and the thermostat mounting position 21586 are located inside the air duct housing 21582, that is, the heater 23 and the thermostat 29 are mounted in the same space.

[0206] In some embodiments, as Figure 19 shown, along the gas flow direction, the heater mounting position 21585 and the thermostat mounting position 21586 are sequentially mounted so that the air flow is heated by the heater 23 and then the temperature is measured by the thermostat 29.

[0207] By mounting both the thermostat 29 and the heater 23 inside the air duct housing 21582, the thermostat 29 can monitor the temperature inside the air duct housing 21582 in real time. In the case of sudden stall or damage of the fan 22, the thermostat 29 can detect the temperature anomaly in time and control the cleaning device to stop working, which can effectively reduce risks and improve the safety of the cleaning device.

[0208] In some embodiments, as Figure 15 shown, a heat sink 21584 is installed inside the air duct housing 21582, and the heat sink 21584 can be connected to the air duct housing 21582 through threaded connection, plug-and-play connection, or snap connection. The heat sink 21584 can be components such as a quartz heating plate, a ceramic heating plate, and a metal heating element.

[0209] Among them, the heat sink 21584 is disposed inside the air duct housing 21582 and on the side of the heater mounting position 21585 away from the inner tank 1, and the heat sink 21584 is in direct contact with the inside of the air duct housing 21582. Since the heat sink 21584 has good thermal conductivity, the local high temperature near the heater 23 can be quickly diffused to the surrounding areas, which can reduce the occurrence of local high temperature inside the air duct housing 21582. At the same time, it can also reduce the damage to the human body or the cabinet after embedded installation caused by the excessive temperature outside the air duct housing 21582.

[0210] In some embodiments, such as Figure 20 As shown, the lower air duct 215 is provided with a heater mounting position 21585. Between the inlet end of the lower air duct 215 and the heater mounting position 21585, there is an expansion section 2154. The flow area of the expansion section 2154 gradually increases from the end close to the inlet end of the lower air duct 215 to the end close to the heater mounting position 21585.

[0211] Among them, the lower air duct 215 includes a heater mounting position 21585 and the inlet end of the lower air duct 215. The flow area of the inlet end of the lower air duct 215 is smaller than that of the heater mounting position 21585. The heater mounting position 21585 is arranged at the rear side of the inlet end of the lower air duct 215, and the air flow flows from the inlet end of the lower air duct 215 to the heater mounting position 21585.

[0212] Among them, the heater mounting position 21585 is used to mount the heater 23, and the heater 23 is configured to heat the gas flowing through the lower air duct 215 when it is turned on. The fan 22 can be installed at the inlet end of the lower air duct 215 or at a position close to the inlet end of the lower air duct 215 to suck the gas from the inlet end of the lower air duct 215 into the lower air duct 215 and drive the gas to flow along the lower air duct 215 to the heater mounting position 21585.

[0213] In this embodiment, the expansion section 2154 can be an axially symmetric shape, or a shape with one side inclined and one side vertical, or a shape with both sides inclined but different inclination angles, which can be specifically set according to the actual use scenario.

[0214] According to the lower air duct 215 provided by the embodiment of the present application, by providing an expansion section 2154 between the inlet end of the lower air duct 215 and the heater mounting position 21585, and the flow area of the expansion section 2154 gradually increases from the end close to the inlet end of the lower air duct 215 to the end close to the heater mounting position 21585, on the one hand, the speed of the air flow entering from the inlet end of the lower air duct 215 can be reduced, the contact time between the gas and the heater 23 can be extended, and the heating effect can be increased; on the other hand, the air volume can be blown more evenly onto the surface of the heater 23, reducing the local high temperature phenomenon, and improving the safety and reliability of the use of the lower air duct 215.

[0215] In some embodiments, such as Figure 20 As shown, the front side wall 13 of the expansion section 2154 is inclined forward from the end close to the inlet end of the lower air duct 215 to the end close to the heater mounting position 21585.

[0216] Among them, the front side wall 13 of the expansion section 2154 has an angle with the vertical direction, so that the flow area at the inlet end of the lower air duct 215 is smaller than the flow area of the lower heater installation position 21585. After the air flow flows out from the outlet of the fan 22, through the expansion of the flow area, the wind speed can be decreased and the pressure can be increased, so that the air volume can be blown to the heater 23 more uniformly, reducing the local high temperature from restricting the power of the heater 23 and playing a role in pressure expansion and flow stabilization.

[0217] In some embodiments, as Figure 20 shown, the inclination angle γ of the front side wall 13 of the expansion section 2154 with the vertical direction satisfies: 10° ≤ γ ≤ 45°.

[0218] Among them, the inclination angle γ of the front side wall 13 of the expansion section 2154 with the vertical direction can be 10°, 20°, 30° or 45°, and can be specifically set according to the actual use scenario.

[0219] By setting the inclination angle range of the front side wall 13 of the expansion section 2154 with the vertical direction, the air volume can be better evenly distributed, which helps the air volume to evenly pass over the cross section of the lower heater 23 and reduces the local overheating from restricting the power of the heater 23.

[0220] In some embodiments, a thermostat installation position 21586 for installing a thermostat 29 is provided in the lower air duct 215.

[0221] The thermostat installation position 21586 is used to install the thermostat 29. The thermostat 29 can be installed at the thermostat installation position 21586 by connection methods such as plug-in connection, threaded connection or snap connection. The thermostat 29 is used to detect the temperature in the lower air duct 215 and control the overall working state of the cleaning device according to the detected temperature result.

[0222] By installing both the thermostat 29 and the heater 23 in the lower air duct 215, the thermostat 29 can monitor the temperature in the lower air duct 215 in real time. In the case of sudden stall or damage of the fan 22, the thermostat 29 can detect the abnormal temperature in time and thus control the cleaning device to stop working, which can effectively reduce risks and improve the safety of the cleaning device.

[0223] Among them, the position of the thermostat installation position 21586 in the lower air duct 215 has at least the following two structures:

[0224] First, the expansion section 2154 is provided with a thermostat installation position 21586 for installing the thermostat 29.

[0225] Among them, the thermostat installation position 21586 can be set on any side wall 13 of the expansion section 2154. For example, it can be set on the front side wall 13 or the rear side wall 13 of the expansion section 2154.

[0226] In this embodiment, by setting the thermostat installation position 21586 between the inlet end of the lower air duct 215 and the heater installation position 21585, the thermostat 29 can detect the temperature of the gas that has not been heated by the heater 23, and timely control the cleaning device to stop working when the temperature is abnormal, further reducing risks and improving the safety of the cleaning device.

[0227] In some embodiments, the front side wall 13 of the expansion section 2154 is provided with a thermostat installation position 21586 for installing the thermostat 29.

[0228] In this embodiment, if the fan 22 suddenly stalls or breaks down, the hot air of the heater 23 floats up and quickly reaches the inclined position of the front side wall 13 of the expansion section 2154. At this time, the temperature at this place reaches the maximum, and this thermostat installation position 21586 can effectively reduce safety problems.

[0229] Secondly, as Figure 21 shown, the lower air duct 215 is provided with a thermostat installation position 21586 for installing the thermostat 29, and the thermostat installation position 21586 and the heater installation position 21585 are arranged side by side in the horizontal direction.

[0230] In this embodiment, the thermostat installation position 21586 and the heater installation position 21585 are arranged side by side in the horizontal direction. The thermostat 29 can directly detect the temperature of the heater 23, and timely control the cleaning device to stop working when the temperature of the heater 23 is abnormal, further reducing risks and improving the safety of the cleaning device.

[0231] In some embodiments, as Figure 21 shown, the lower air duct 215 further includes: a partition plate 2155; the partition plate 2155 is installed on the inner side surface of the thermostat installation position 21586 to isolate the thermostat 29 from the air flow channel of the lower air duct 215, and the partition plate 2155 is made of a thermally conductive insulating material.

[0232] Among them, the partition plate 2155 can be made of a thermally conductive insulating material such as ceramic, graphene, mica or silica gel. The partition plate 2155 can be connected to the inner side surface of the thermostat installation position 21586 by plug-in connection, threaded connection or snap connection.

[0233] In this embodiment, by providing the partition plate 2155 made of a thermally conductive insulating material, on the one hand, the thermostat 29 that needs to be connected to high voltage can be isolated from the air flow channel of the lower air duct 215, so as to avoid the thermostat 29 contacting the conductive water vapor in the lower air duct 215, strengthen the insulation protection and reduce potential safety hazards; on the other hand, the partition plate 2155 also has a heat conduction function, and can reflect the temperature at the heater 23 to the thermostat 29 in real time, so as to cut off the entire system when the thermostat 29 detects an abnormal temperature, and improve the safety of the cleaning device.

[0234] It can be understood that since the lower air duct 215 and the cleaning chamber 11 belong to the same closed space, and the space is filled with a large amount of conductive water vapor, while the thermostat 29 needs to be connected to high voltage, there are safety hazards if the thermostat 29 is in direct contact with the water vapor.

[0235] As Figure 22 and Figure 23 shown, the cleaning device according to the embodiment of the present application further includes an air duct 21, and the air duct 21 includes: a fan installation position 2146, a first air guiding section 2147, and a second air guiding section 2149 that are sequentially connected. The fan installation position 2146 and the first air guiding section 2147 are distributed in the same direction, and the first air guiding section 2147 and the second air guiding section 2149 are bent relative to each other; wherein, the first air guiding section 2147 is provided with a volute tongue 2148, and the flow area at the volute tongue 2148 gradually increases from the end close to the fan installation position 2146 to the end close to the second air guiding section 2149.

[0236] Among them, the fan installation position 2146 is used to install the fan 22. The fan installation position 2146 and the first air guiding section 2147 are located on the same side of the cleaning chamber 11. For example, both the fan installation position 2146 and the first air guiding section 2147 can be located on the top surface of the cleaning chamber 11, or both can be located on the side surface of the cleaning chamber 11.

[0237] The first air guiding section 2147 and the second air guiding section 2149 are bent relative to each other. The first air guiding section 2147 and the second air guiding section 2149 are located on adjacent sides of the cleaning chamber 11. For example, the first air guiding section 2147 is located on the top surface of the cleaning chamber 11, and the second air guiding section 2149 is located on the side surface of the cleaning chamber 11; or the first air guiding section 2147 is located on the side surface of the cleaning chamber 11, and the second air guiding section 2149 is located on the bottom surface of the cleaning chamber 11.

[0238] Among them, the angle at which the first air guiding section 2147 and the second air guiding section 2149 are bent relative to each other can be 90°, 180°, or other angles, and can be specifically set according to the installation environment of the air duct 21.

[0239] Among them, the volute tongue 2148 is located on the side of the first air guiding section 2147 close to the fan installation position 2146, and the volute tongue 2148 is used to reduce the amount of gas circulating in the fan installation position 2146. When the impeller 222 of the fan 22 rotates, when the air flow entering the air inlet 211 passes by the volute tongue 2148, the tongue of the volute tongue 2148 divides them into two parts: most of the air flow flows into the first air guiding section 2147 along the fan installation position 2146; a small part of the air flow flows back to the fan installation position 2146 through the gap between the volute tongue 2148 and the impeller 222, and rotates with the impeller 222 in the fan installation position 2146 for one week and then returns to the volute tongue 2148 to participate in a new flow division.

[0240] It should be noted that the gas in the cleaning chamber 11 is sucked into the first air guiding section 2147 by the fan 22 and then immediately enters the second air guiding section 2149. When the gas in the cleaning chamber 11 passes from the first air guiding section 2147 to the second air guiding section 2149, its direction deflects. The deflection angle is the same as the relative bending angle between the first air guiding section 2147 and the second air guiding section 2149. The deflection of the gas generates resistance to the gas flow, and it is easy to occur the phenomenon of backflow vortex, which affects the working state, air volume and efficiency of the overall fan 22.

[0241] The air duct 21 provided by the embodiment of the present application is provided with a volute tongue 2148 in the first air guiding section 2147, and the flow area at the volute tongue 2148 gradually increases from the end close to the fan installation position 2146 to the end close to the second air guiding section 2149. This can reduce the influence of the backflow vortex generated by the deflection of the air flow direction when the air flow passes from the first air guiding section 2147 to the second air guiding section 2149. And due to the expansion design of the first air guiding section 2147, it can significantly improve the wind speed uniformity at the outlet of the fan 22 and the maximum static pressure of the fan 22, enhance the overall air volume in the air duct 21, and make 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 device.

[0242] In some embodiments, the fan installation position 2146 and the first air guiding section 2147 are distributed in the horizontal direction, and the second air guiding section 2149 is distributed in the vertical direction.

[0243] Among them, the relative bending angle between the first air guiding section 2147 and the second air guiding section 2149 is 90°, so as to adapt to the cleaning device in which the installation plane of the fan 22 and the inner circulation outlet of the cleaning chamber 11 are on different planes.

[0244] In some embodiments, the volute tongue 2148 includes an arc section 21481 and a straight section 21482. The arc section 21481 protrudes towards the middle of the first air guiding section 2147. The first end of the straight section 21482 is connected to the arc section 21481, and the first end is connected to the wall surface of the first air guiding section 2147.

[0245] Among them, the arc section 21481 is mainly used to guide the flow direction of the gas, so that the gas can better enter the area of the straight section 21482, and at the same time reduce the turbulence and vortex of the air flow. The straight section 21482 is mainly used to smoothly introduce the air flow of the arc section 21481 into the second air guiding section 2149.

[0246] In some embodiments, as Figure 23 shown, the included angle between the straight section 21482 and the central axis of the first air guiding section 2147 is θ, satisfying: 5° ≤ θ ≤ 60°.

[0247] Among them, the included angle θ between the straight line segment 21482 and the central axis of the first air guiding segment 2147 can be 5°, 25°, 45° or 60°, and can be specifically set according to the actual working environment.

[0248] In some embodiments, the straight line segment 21482 is tangent to the arc segment 21481, so as to smoothly introduce the air flow of the arc segment 21481 into the straight line segment 21482.

[0249] In some embodiments, as Figure 23 shown, the radian of the arc segment 21481 is δ, satisfying: 30° ≤ δ ≤ 90°.

[0250] Among them, the radian δ of the arc segment 21481 can be 30°, 45°, 60° or 90°, and can be specifically set according to the actual working environment.

[0251] By setting the radian δ of the arc segment 21481, the gas can enter the area of the straight line segment 21482 better, and at the same time, the turbulence and eddy current of the air flow are reduced.

[0252] In some embodiments, as Figure 23 shown, the vertical distance d4 from the center of the fan installation position 2146 to the straight line segment 21482 and the radius r of the fan installation position 2146 satisfy: d4 ≤ 3r.

[0253] Among them, the vertical distance d4 from the center of the fan installation position 2146 to the straight line segment 21482 can be negative, that is, the extension line of the straight line segment 21482 intersects with the fan installation position 2146; or, the extension line of the straight line segment 21482 is tangent to the fan installation position 2146, that is, the vertical distance d4 from the center of the fan installation position 2146 to the straight line segment 21482 is 0; or, the vertical distance d4 from the center of the fan installation position 2146 to the straight line segment 21482 can be r, 1.5r or 3r, and can be specifically set according to the actual working environment.

[0254] In this embodiment, by setting the vertical distance from the center of the fan installation position 2146 to the straight line segment 21482, the gas can enter the area of the straight line segment 21482 better, and at the same time, the turbulence and eddy current of the air flow are reduced.

[0255] In some embodiments, the volute tongue 2148 is spaced apart from the second air guiding segment 2149 to improve the flow characteristics of the gas, improve the efficiency of flow splitting, and reduce the turbulence and eddy current of the air flow. The spacing distance between the volute tongue 2148 and the second air guiding segment 2149 needs to be calculated and adjusted according to actual requirements.

[0256] In some embodiments, as Figure 23 shown, the air duct 21 is open at the fan installation position 2146 to form the lower volute of the fan 22.

[0257] In this embodiment, the fan installation position 2146 is open to facilitate the installation of the impeller 222 of the fan 22.

[0258] The fan 22 may only retain the upper shell 221, the impeller 222 and the motor assembly of the fan 22, and omit the original lower shell of the fan 22. In this way, the fan installation position 2146 and the upper shell 221 of the fan 22 together form the fan 22 part, reducing the overall size of the fan 22. A larger model of the fan 22 can be installed in the same space. Moreover, the fan installation position 2146 replaces the lower shell of the fan 22, and the impeller 222 is directly installed in the fan installation position 2146, increasing the air inlet area of the air inlet 211 and increasing the air intake volume.

[0259] In some embodiments, as Figure 24 and Figure 25 shown, the cleaning device provided by the embodiment of the present application further includes a water blocking structure. An installation hole is provided on the first wall surface of the inner tank 1 of the cleaning device. The water blocking structure includes: an air duct 21 and a water blocking cover 24.

[0260] As Figure 25 and Figure 26 shown, the air inlet end 20 of the air duct 21 has a flanging 201, and the flanging 201 is adapted to extend into the inner tank 1 from the installation hole; the water blocking cover 24 includes a connected water blocking plate 241 and an installation structure 242, the installation structure 242 is connected to the flanging 201, the projection of the water blocking plate 241 on the first wall surface covers the projection of the air inlet end 20 on the first wall surface, and an air inlet 211 is formed between the water blocking cover 24 and the flanging 201.

[0261] Among them, the first wall surface of the inner tank 1 of the cleaning device may be the top wall 12, the side wall 13 or the bottom wall 16 of the inner tank 1, which can be specifically set according to the installation scenario of the cleaning device. The installation hole may be a through hole, and the installation hole is used to install the air duct 21.

[0262] The air inlet end 20 of the air duct 21 has a flanging 201, and the flanging 201 is connected to the installation hole in a matching manner. The flanging 201 and the installation hole can be connected by connection methods such as snap connection, knob connection or screw connection.

[0263] Among them, the water blocking cover 24 has the functions of ventilation and water blocking. The water blocking cover 24 can be arranged between the fan 22 and the cleaning chamber 11, and the water blocking cover 24 is located in the cleaning chamber 11.

[0264] An air inlet 211 is formed between the water blocking cover 24 and the flanging 201. The fan 22 sucks the gas in the cleaning chamber 11 into the air duct 21 through the air inlet 211. The number of the air inlets 211 can be set to one or more, and the shape of the air inlet 211 can be strip-shaped or surface-shaped, which can be specifically set according to the actual installation situation.

[0265] Among them, the mounting structure 242 and the flanging 201 can be connected by connection means such as snap fasteners, knobs or threaded connections. The water baffle 241 is connected to the flanging 201 at the air inlet end 20 of the air duct 21 through the mounting structure 242. The water baffle 241 and the mounting structure 242 can be connected by connection means such as integral molding, welding or threaded connections.

[0266] In the case where the mounting structure 242 and the flanging 201 are connected by threaded connection, both the mounting structure 242 and the flanging 201 are provided with meshing threads, and the mounting structure 242 and the flanging 201 are connected by threaded meshing.

[0267] In the case where the mounting structure 242 and the flanging 201 are connected by a knob, the mounting structure 242 and the flanging 201 can be provided with structures that engage with each other. After the mounting structure 242 and the flanging 201 are rotated by a certain angle, the mounting structure 242 and the flanging 201 are snap-connected.

[0268] According to the water blocking structure provided by the embodiment of the present application, by providing the air duct 21 and the water blocking cover 24, and the projection of the water baffle 241 on the first wall covers the projection of the air inlet end 20 on the first wall, it is possible to reduce the situation that the water flow directly enters the air duct 21 during the cleaning process of the cleaning equipment and directly impacts the inside of the fan 22, causing pollution to the impeller 222, playing a protective role, and at the same time improving the air volume of the fan 22, which is beneficial to using a higher-power heater 23 downstream of the fan 22 to accelerate the drying process.

[0269] In some embodiments, as Figure 26 shown, there are multiple mounting structures 242. The multiple mounting structures 242 are arranged at intervals around the circumference of the water baffle 241, and an air inlet 211 is formed between two adjacent mounting structures 242.

[0270] Among them, the mounting structure 242 can be provided with 2, 3 or more. The multiple mounting structures 242 can be evenly distributed around the circumference of the water baffle 241, or can be arranged at different intervals according to requirements. The number and distribution mode of the mounting structures 242 can be set according to the actual use scenario.

[0271] By adding multiple mounting structures 242, multi-point connection between the water blocking cover 24 and the air inlet end 20 of the air duct 21 can be realized, improving the reliability of the connection.

[0272] In some embodiments, the flanging 201 includes a plurality of circumferentially spaced-apart distributions along the air inlet end 20. First, the multiple flangings 201 can be connected to the multiple mounting structures 242, and then the multiple flangings 201 and the multiple mounting structures 242 are rotated by a certain angle so that the multiple flangings 201 and the multiple mounting structures 242 are connected in one-to-one correspondence.

[0273] In this embodiment, the number and installation positions of the flanges 201 match the installation structure 242. By connecting multiple flanges 201 to multiple installation structures 242 in a one-to-one correspondence, the connection points between the water baffle 24 and the air inlet end 20 of the air duct 21 can be increased, improving the connection reliability.

[0274] In some embodiments, as Figure 26 shown, multiple flanges 201 and multiple installation structures 242 are assembled or disassembled by a knob method, and the connection method is simple and convenient.

[0275] Among them, multiple flanges 201 are spaced apart circumferentially along the air inlet end 20, and multiple installation structures 242 are spaced apart circumferentially around the water baffle 241. Before connecting the water baffle 24 to the air inlet end 20 of the air duct 21, each installation structure 242 among the multiple installation structures 242 can be located between two adjacent flanges 201, and then the water baffle 24 is rotated by a certain angle relative to the air inlet end 20 of the air duct 21 so that the projection of the flange 201 on the axial direction of the air duct 21 has an overlapping part with the air inlet end 20. At this time, the water baffle 24 and the air inlet end 20 of the air duct 21 are snap-connected.

[0276] In some embodiments, the installation structure 242 includes a card slot 2421 that opens radially inward, and the flange 201 is embedded in the card slot 2421. By rotating the water baffle 24, the area of the flange 201 located in the card slot 2421 can be adjusted, facilitating assembly or disassembly.

[0277] In this embodiment, when there is one flange 201, the flange 201 extends circumferentially along the air inlet end 20, and the flange 201 has a notch. The installation structure 242 embeds the flange 201 into the card slot 2421 through the notch; when there are multiple flanges 201, the multiple flanges 201 are spaced apart circumferentially along the air inlet end 20, and the interval positions between two adjacent flanges 201 of the installation structure 242 embed each flange 201 into one or more card slots 2421.

[0278] In some embodiments, as Figure 26 shown, the installation structure 242 includes: a connecting member 242 and a card joint 2423; the connecting member 2422 is connected to the water baffle 241; the card joint 2423 is connected to the connecting member 2422, and the card joint 2423 is provided with a card slot 2421.

[0279] Among them, the card joint 2423, the connecting member 2422, and the water baffle 241 can be connected by connection methods such as integral molding, welding, or gluing.

[0280] The connecting member 2422 can be connected to the edge, the middle part, or the area between the edge and the middle part of the water baffle 241.

[0281] In some embodiments, asFigure 26 As shown, the card connector 2423 is located radially outside the water baffle 241, and the radially outer wall of the card connector 2423 is arc-shaped.

[0282] Among them, as Figure 27 shown, the card connector 2423 is located radially outside the water baffle 241, that is, there is a certain gap between the outside of the card connector 2423 and the radially outer side of the water baffle 241. When the card connector 2423 is connected to the flanging 201, an air inlet 211 is formed between the water baffle 241 and the flanging 201.

[0283] By setting the radially outer wall of the card connector 2423 to be arc-shaped, it is convenient for the radially outer wall of the card connector 2423 to match the inner wall 13 of the air inlet end 20 of the air duct 21.

[0284] In some embodiments, the connecting member 2422 has a hollow groove 24221. One or more hollow grooves 24221 can be provided, and the number and hollow area of the hollow grooves 24221 can be set according to the area of the connecting member 2422.

[0285] By providing the hollow groove 24221, the connecting member 2422 can be lightened in weight to reduce the material cost.

[0286] In some embodiments, the radially inner ends of the connecting members 2422 of the plurality of mounting structures 242 are connected by an annular rib 2411 connected to the bottom surface of the water baffle 241.

[0287] Among them, an annular rib 2411 is provided on the bottom surface of the water baffle 241. The annular rib 2411 can be concentric with the water baffle 241 or eccentric with the water baffle 241. The annular rib 2411 can be connected to the bottom surface of the water baffle 241 by connection methods such as integral molding, welding or gluing. The radially inner ends of the connecting members 2422 of the plurality of mounting structures 242 can be connected to the annular rib 2411 by connection methods such as integral molding, welding or gluing.

[0288] In this embodiment, as Figure 26 shown, the radially inner ends of the connecting members 2422 of the plurality of mounting structures 242 are connected to the annular rib 2411, which can connect the connecting members 2422 of the plurality of mounting structures 242 and improve the connection stability between the plurality of mounting structures 242 and the water baffle 241.

[0289] In some embodiments, as Figure 25 shown, the first wall surface is provided with a mounting boss 121 that surrounds the mounting hole and protrudes into the cleaning chamber 11. The water blocking structure further includes: a sealing ring, and the sealing ring is clamped between the mounting boss 121 and the air duct 21.

[0290] Wherein, an installation space is formed between the installation boss 121 and the air inlet end 20 of the air duct 21. The sealing ring is located in the installation space, and the sealing between the installation boss 121 and the air duct 21 can be achieved by squeezing the sealing ring.

[0291] Wherein, 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 device.

[0292] In some embodiments, as Figure 25 shown, the distance between the end face of the installation boss 121 and the surface of the water baffle 24 is Δh4, satisfying: Δh4≥5mm.

[0293] Wherein, the distance Δh4 between the end face of the installation boss 121 and the surface of the water baffle 24 can be 5mm, 6mm, 8mm or a larger value. By setting the distance between the end face of the installation boss 121 and the surface of the water baffle 24, the air intake volume of the air duct 21 can be increased, the situation of overheating of the power wall surface of the heater 23 can be reduced, and potential safety hazards can be reduced.

[0294] In some embodiments, as Figure 28 and Figure 30 shown, the water baffle 24 includes: a main cover body 243 and a plurality of water baffle members 244 groups; the main cover body 243 has an installation structure 242 for installing on the whole machine and forms a ventilation duct 2432; the plurality of water baffle members 244 groups are arranged at intervals along the axial direction of the ventilation duct 2432, and each water baffle member 244 group includes a plurality of water baffle members 244 arranged at intervals in a direction intersecting with the axial direction of the ventilation duct 2432, and the projection of the plurality of water baffle members 244 groups along the axial direction of the ventilation duct 2432 covers the projection of the inlet end of the ventilation duct 2432 along the axial direction.

[0295] Wherein, the main cover body 243 is used to connect with the whole machine and the plurality of water baffle members 244 groups, and the main cover body 243 forms a ventilation duct 2432 to realize the air circulation in the cleaning chamber 11.

[0296] The main cover body 243 can be connected to the whole machine by means of snap connection, threaded connection or welding, etc., and the main cover body 243 and the plurality of water baffle members 244 groups can be connected by means of integral molding, welding or gluing, etc.

[0297] The whole machine is provided with a structural member connected to the installation structure 242. When the main cover 243 is connected to the whole machine by a snap connection, one of the installation structure 242 and the structural member is a fixed buckle, and the other of the installation structure 242 and the structural member is a connecting member 2422. The connecting member 2422 is inserted into the fixed buckle to lock the main cover 243 and the whole machine together; or, when the main cover 243 is connected to the whole machine by a threaded connection, the installation structure 242 and the structural member have meshing threads, and the installation structure 242 and the structural member are locked together by thread fitting to lock the main cover 243 and the whole machine together.

[0298] Among them, as Figure 30 shown, there are multiple groups of water baffle members 244 arranged in multiple layers. The multiple groups of water baffle members 244 are arranged at intervals along the axial direction of the ventilation duct 2432. The water baffle members 244 can be arranged in 2 layers, 3 layers or more layers. The specific number can be set according to the axial length of the ventilation duct 2432. The adjacent two layers of water baffle members 244 are spaced apart to achieve ventilation. The arrangement of the multiple groups of water baffle members 244 can enhance the water blocking effect.

[0299] Among them, multiple water baffle members 244 are arranged at intervals along a direction intersecting with the axial direction of the ventilation duct 2432. The water baffle members 244 can be arranged in 3, 4 or more. The number of water baffle members 244 in each group of water baffle members 244 can be the same or different. The number of water baffle members 244 in each group of water baffle members 244 can be determined according to the cross-sectional area of the ventilation duct 2432 in the plane where it is located.

[0300] As Figure 30 shown, the arrows in the figure indicate the air flow direction. The adjacent two water baffle members 244 are spaced apart to achieve ventilation. The projection of the multiple groups of water baffle members 244 along the axial direction of the ventilation duct 2432 covers the projection of the inlet end of the ventilation duct 2432 along the axial direction, so that the air flow is sucked into the air duct 21 in a zigzag shape along the interval positions between the adjacent two layers of water baffle members 244 and the interval positions between the adjacent two water baffle members 244, effectively blocking the entry of water flow and ensuring the circulation of gas at the same time.

[0301] Among them, multiple water baffle members 244 can be arranged at intervals along a direction perpendicular to the axial direction of the cross-section of the ventilation duct 2432. The lengths of the multiple water baffle members 244 gradually change along the radial direction of the cross-section of the ventilation duct 2432, so that the ends of the multiple water baffle members 244 are connected to the inner wall of the ventilation duct 2432; or, multiple water baffle members 244 can be arranged at intervals along a direction inclined at an acute angle to the axial direction of the ventilation duct 2432.

[0302] As Figure 29As shown, the sum of the projections of multiple groups of water blocking members 244 along the axial direction of the ventilation duct 2432 is equal to or greater than the projection of the inlet end of the ventilation duct 2432 along the axial direction, so as to achieve full coverage of the ventilation duct 2432 by multiple groups of water blocking members 244.

[0303] Among them, the water blocking member 244 can be structures such as water blocking rib strips, water blocking films or water blocking plates 241.

[0304] According to the water blocking cover 24 provided by the embodiment of the present application, by providing multiple groups of water blocking members 244 spaced apart along the axial direction of the ventilation duct 2432, each group of water blocking members 244 includes multiple water blocking members 244 spaced apart along a direction intersecting the axial direction of the ventilation duct 2432, and the projections of the multiple groups of water blocking members 244 along the axial direction of the ventilation duct 2432 cover the projection of the inlet end of the ventilation duct 2432 along the axial direction, so that the air flow is sucked into the air duct 21 by the fan 22 in a zigzag shape along the intervals between adjacent two groups of water blocking members 244 and between adjacent two water blocking members 244. It can reduce the situation that the water flow directly enters the air duct 21 during the cleaning process of the cleaning equipment and directly impacts the inside of the fan 22, causing pollution to the impeller 222, playing a protective role, and at the same time improving the air volume of the fan 22, which is beneficial to using a higher-power heater 23 downstream of the fan 22 to accelerate the drying process.

[0305] Among them, the multiple water blocking members 244 can be distributed parallel to each other in the plane where they are located, or can be distributed crosswise to each other.

[0306] In some embodiments, the water blocking members 244 in multiple groups of water blocking members 244 are arranged parallel to each other at intervals to uniform the flow velocity and air volume of the air flow.

[0307] In some embodiments, the distance between adjacent two water blocking members 244 in multiple groups of water blocking members 244 is equal to further uniform the flow velocity and air volume of the air flow.

[0308] In some embodiments, as Figure 30 shown, on the side of the water blocking member 244 facing away from the inlet end of the ventilation duct 2432, there is a guiding surface 2443, and the guiding surface 2443 inclines towards the outside of the water blocking member 244 along the direction close to the inlet end of the ventilation duct 2432.

[0309] Among them, the guiding surface 2443 can be a plane or an arc surface.

[0310] By providing the guiding surface 2443, the water vapor in the cleaning chamber 11 that encounters the condensate generated by the fan 22 can flow back into the cleaning chamber 11 along the guiding surface 2443, reducing the residence time of the condensate in the water blocking member 244 and increasing the drying effect inside the chamber.

[0311] In some embodiments, as Figure 30As shown, the water baffle 244 includes a first plate 2441 and a second plate 2442. One side of the first plate 2441 facing away from the inlet end of the ventilation duct 2432 is connected to one side of the second plate 2442 facing away from the inlet end of the ventilation duct 2432. The normal lines of the first plate 2441 and the second plate 2442 are both at an acute angle to the axial direction of the ventilation duct 2432. The surfaces of the first plate 2441 facing away from the inlet end of the ventilation duct 2432 and the second plate 2442 facing away from the inlet end of the ventilation duct 2432 form a flow guiding surface 2443.

[0312] Among them, the first plate 2441 and the second plate 2442 can be symmetrically arranged along their connection, or can be asymmetrically arranged, and can be specifically set according to the actual use scenario. In the case where the first plate 2441 and the second plate 2442 are asymmetrically arranged, the lengths or widths of the first plate 2441 and the second plate 2442 can be different.

[0313] Among them, one side of the first plate 2441 and the second plate 2442 facing away from the inlet end of the ventilation duct 2432 is connected, and one side of the first plate 2441 and the second plate 2442 close to the inlet end of the ventilation duct 2432 is spaced apart. The first plate 2441 and the second plate 2442 form a bracket-shaped intercepting structure, which can increase the resistance of water flow, reduce the entry of water flow, and at the same time will not generate a large resistance to the air flow.

[0314] By setting the water baffle 244 to have a double-sided flow guiding surface 2443, the condensed water generated by the fan 22 can flow back into the cleaning chamber 11 along the flow guiding surface 2443, reducing the residence time of the condensed water in the water baffle 244 and increasing the drying effect in the chamber. 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 electrical components such as the fan 22 and the heater 23 in the air duct 21.

[0315] In some embodiments, as Figure 30 shown, the main cover 243 includes: a pipe body 2431 and a flange 2433; the pipe body 2431 forms a ventilation duct 2432; the flange 2433 is connected to the outer periphery of the pipe body 2431 and is arranged around the pipe body 2431. An installation structure 242 is provided on one side of the pipe body 2431 facing away from the inlet end of the ventilation duct 2432.

[0316] Among them, the pipe body 2431 has a certain axial length, which can increase the number of groups of the water baffle 244 and improve the water blocking effect.

[0317] The flange 2433 can be circular. The flange 2433 is arranged around the pipe body 2431. The inner side of the flange 2433 is connected to the outer periphery of the pipe body 2431, and the outer side of the flange 2433 extends in a direction away from the pipe body 2431. The width of the flange 2433 is set according to the actual installation environment of the water blocking cover 24.

[0318] 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.

[0319] In some embodiments, as Figure 28 As shown, 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 whole machine by means of a knob.

[0320] 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.

[0321] By adding multiple mounting structures 242 , the main cover 243 can be connected to the entire device at multiple points, thereby improving the reliability of the connection.

[0322] 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.

[0323] In some embodiments, as Figure 28 As shown, 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 away from the inlet end of the air passage 2432 .

[0324] 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.

[0325] In some embodiments, as Figure 30 As shown, 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 inclined side of the 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.

[0326] In some embodiments, as Figure 28As shown, a sealing installation position 24331 for installing a sealing member is provided on the side of the flange 2433 facing away from the inlet end of the air passage 2432.

[0327] 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.

[0328] 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.

[0329] In some embodiments, as Figure 28 As shown, the side of the flange 2433 facing away from the inlet end of the air duct 2432 is provided with multiple pairs of protrusions 24332 distributed circumferentially around the tube body 2431, each pair of protrusions 24332 includes two protrusions 24332 arranged radially spaced apart, and multiple pairs of protrusions 24332 form a sealing mounting position 24331.

[0330] 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 .

[0331] 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.

[0332] In some embodiments, as Figure 31 As shown, a reinforcing rib 24333 is provided between one side of the flange 2433 close to the inlet end of the air passage 2432 and the outer side wall of the tube body 2431 .

[0333] 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.

[0334] 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.

[0335] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0336] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0337] In the description of this application, "the first feature", "the second feature" may include one or more of such features.

[0338] In the description of this application, the meaning of "a plurality" is two or more.

[0339] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0340] In the description of this application, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0341] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0342] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A cleaning device, characterized in that, Comprising: An inner container, forming a cleaning chamber; An exhaust component, installed on the inner container and configured to discharge the gas in the cleaning chamber when turned on; An air duct, installed on the inner container and having an air inlet and an air outlet both communicating with the cleaning chamber; A fan, 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, The distance from the center of the air inlet to the back plate of the cleaning chamber is d2, the depth of the cleaning chamber in the front-back direction is D0, and the distance from the center of the inlet of the fan to the edge of the fan is d5, satisfying: d5 ≤ d2 ≤ 0.5D0.

2. The cleaning device according to claim 1, wherein The air inlet is provided on the top wall of the cleaning chamber, and the air outlet is located at the lower part of the side of the cleaning chamber.

3. The cleaning device according to claim 2, characterized in that, The air inlet is provided in the area of the top wall of the cleaning chamber close to the side and the back plate.

4. The cleaning device according to claim 1, characterized in that, The fan is installed above the top wall of the inner container, and at least part of the air duct is located above the top wall of the inner container and outside the side wall.

5. The cleaning device according to claim 1, characterized in that, The fan includes: an upper shell, an impeller and a motor assembly. The motor assembly is power-coupled to the impeller. The upper shell is connected to the air duct to form a receiving cavity, and the impeller is installed in the receiving cavity.

6. The cleaning device according to claim 1, wherein, Further comprising: A side plate. The heater is installed in the area of the air duct located on the side of the inner container. The side plate is installed on the side wall of the inner container and covers at least part of the air duct.

7. The cleaning device according to claim 6, wherein There is a gap between the inner side surface of the side plate and the air duct, and the gap is c, satisfying c ≥ 2 mm.

8. The cleaning device according to claim 1, wherein, The power of the heater is P, satisfying: P ≤ 500 W.

9. The cleaning device according to any one of claims 1-8, characterized in that, When the exhaust component is working, the exhaust volume of the exhaust component is not less than the gas volume entering the cleaning chamber from the outside.

10. The cleaning device according to any one of claims 1-8, characterized in that, The air duct includes a makeup air branch. The makeup air inlet of the makeup air branch communicates with the outside, and the makeup air outlet of the makeup air branch communicates with the cleaning chamber. When the exhaust component and the fan are working, the exhaust volume of the exhaust component is not less than the makeup air volume of the makeup air branch.

11. The cleaning device according to any one of claims 1-8, wherein The cleaning device has an inner circulation drying working mode. In the inner circulation drying working mode, the fan and the heater work, and the exhaust component stops; And / or, the cleaning device has a moisture exhaust negative pressure working mode. In the moisture exhaust negative pressure working mode, the fan and the heater stop, and the exhaust component works; And / or, the cleaning device has a mixed working mode; in the mixed working mode, the fan, the heater and the exhaust component all work; And / or, the cleaning device has a mixed moisture exhaust working mode; in the mixed moisture exhaust working mode, the fan and the exhaust component both work, and the heater stops.

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