Cleaning device

Abstract

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

Description

Technical Field

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

[0002] The drying methods of cleaning devices such as dishwashers include: condensation drying, hot air drying, adsorption drying, and quick drying by opening the door, etc. Among them, condensation drying has problems such as poor drying effect and long drying time, adsorption drying has problems such as high cost and odor when stored for a long time, and quick drying by opening the door 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: sucking in external air and heating it using a heater, and then guiding the heated external air into the cleaning chamber to perform hot air drying on the items in the cleaning chamber. During the hot air drying process, the external air is sucked into the cleaning chamber, causing the cleaning chamber to form a positive pressure. In order to maintain the normal pressure of the cleaning chamber, the exhaust component of the cleaning device is usually turned on to reduce the problem of water vapor leakage caused by the positive pressure in the cleaning chamber.

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

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

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

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

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

[0009] Air duct, the air duct is installed in the inner container and has an air inlet, a make-up air inlet and an air outlet. The air inlet and the air outlet are both communicated with the cleaning chamber, the make-up air inlet is communicated with the outside, and the air duct is provided with a valve. The valve is configured to close the make-up air inlet under normal conditions and open under the action of pressure difference.

[0010] Fan, the fan is installed in the air duct, and both the air inlet and the make-up air inlet are communicated with the inlet of the fan, and the outlet of the fan is communicated with the air outlet.

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

[0012] According to the cleaning device provided by the embodiment of the present application, by setting an air duct and a valve, the air duct has an air inlet, a make-up air inlet and an air outlet, and the internal circulation and passive air supply of the cleaning chamber can be realized. The valve disconnects the connection between the make-up air inlet and the air outlet under normal conditions to form an internal circulation. 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, on the one hand, 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; at the same time, in the cleaning stage, the blocking of the make-up air inlet by the valve can reduce the leakage of water vapor in the cleaning chamber to the outside through the air duct under normal conditions, thereby reducing the condensate between the inner container and the outer shell of the cleaning device and reducing corrosion and pollution; on the other hand, the valve opens under the action of pressure difference to connect the make-up air inlet and the air outlet to form an external circulation. At this time, external gas can be sucked in through the make-up air inlet to maintain the air pressure balance in the cleaning chamber, reduce the vacuum degree in the cleaning chamber, thereby improving the exhaust rate, quickly discharging the water vapor in the cleaning chamber, improving the overall moisture discharge rate and drying rate of the cleaning device, and further reducing the energy consumption of hot air drying.

[0013] According to an embodiment of the present application, the cleaning device has a cleaning working mode. In the cleaning working mode, the fan, the heater, and the exhaust assembly stop operating, and the valve closes.

[0014] And / or, the cleaning device has an internal circulation drying working mode. In the internal circulation drying working mode, the fan and the heater work, the exhaust assembly stops operating, the valve opens, and the air flow rate sucked in through the make-up air inlet ≤ 0.1 * the air flow rate sucked in through the air inlet.

[0015] And / or, the cleaning device has a hybrid working mode; in the hybrid working mode, the blower, the heater, and the exhaust assembly all operate, the valve is opened, and the air flow rate inhaled from the air inlet is less than the air flow rate inhaled from the air make-up inlet.

[0016] According to an embodiment of the present application, the inlet of the blower is arranged facing the air inlet below, and is spaced apart from the bottom shell of the air duct to form a lateral air make-up opening, the air make-up opening is communicated with the air make-up inlet, and the valve is installed between the air make-up opening and the air make-up inlet.

[0017] According to an embodiment of the present application, the blower includes: an upper shell, an impeller, and a motor assembly, the motor assembly is power-coupled to the impeller, the upper shell of the air duct has a downwardly protruding mounting shell, the upper shell is connected to the mounting shell to form a receiving cavity, the impeller is installed in the receiving cavity, and the mounting shell is spaced apart from the bottom shell of the air duct to form the air make-up opening.

[0018] According to an embodiment of the present application, the blower is installed above the top wall of the inner tank, the air duct includes: a main air duct and an air make-up branch, the air make-up branch is located between the main air duct and the top wall of the inner tank, and the valve is installed on the wall surface between the air make-up branch and the main air duct.

[0019] According to an embodiment of the present application, the air inlet is located in the area of the top wall of the inner tank close to the back plate, and the air make-up inlet is arranged forward.

[0020] According to an embodiment of the present application, the valve includes a damper pivotally installed on the wall surface between the air make-up branch and the main air duct, a first part of the damper is located in the air make-up branch, a second part of the damper is located in the main air duct, and the damper is configured to block the air make-up branch under the action of gravity and open when the blower is turned on.

[0021] According to an embodiment of the present application, the blower includes: an upper shell, an impeller, and a motor assembly, the motor assembly is power-coupled to the impeller, the upper shell is connected to the air duct to form a receiving cavity, and the impeller is installed in the receiving cavity.

[0022] According to an embodiment of the present application, the wall surface between the air make-up branch and the main air duct has a groove recessed toward the air make-up branch, and the damper is pivotally installed on the side wall of the groove close to the blower, so that when the valve is opened, the first part is located behind the side wall of the groove close to the blower, and the second part is located in the groove.

[0023] According to an embodiment of the present application, the first part is provided with a first boss, and the first boss is used to abut against the wall surface of the make-up air branch when the valve is closed; the second part is provided with a second boss, and the second boss is used to abut against the wall surface of the main air duct when the valve is opened.

[0024] According to an embodiment of the present application, the lower wall surface of the make-up air branch is provided with a rib protruding upward, and the first part abuts against the rib when the valve is closed.

[0025] According to an embodiment of the present application, when the exhaust component and the fan are working, the exhaust volume of the exhaust component is not less than the air supply volume of the make-up air inlet.

[0026] 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 on the side of the inner tank, the side plate is installed on the side wall of the inner tank, and covers at least part of the outside of the air duct, and the inner side surface of the side plate is spaced apart from the air duct and the heater.

[0027] According to an embodiment of the present application, the power of the heater is P, satisfying: P≤500W.

[0028] The additional aspects and advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present application. Description of the Drawings

[0029] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0030] Figure 1 is one of the structural schematic diagrams of the cleaning device provided by the embodiment of the present application;

[0031] Figure 2 is the second structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0032] Figure 3 is one of the structural schematic diagrams of the internal circulation component provided by the embodiment of the present application;

[0033] Figure 4 is the second structural schematic diagram of the internal circulation component provided by the embodiment of the present application;

[0034] Figure 5 is the third structural schematic diagram of the internal circulation component provided by the embodiment of the present application;

[0035] Figure 6 is the fourth structural schematic diagram of the internal circulation component provided by the embodiment of the present application;

[0036] Figure 7 is Figure 6 The partial enlarged view at position F in

[0037] Figure 8 Figure 3 of the structural schematic diagram of the cleaning device provided by an embodiment of the present application;

[0038] Figure 9 Figure 4 of the structural schematic diagram of the cleaning device provided by an embodiment of the present application;

[0039] Figure 10 Figure 5 of the structural schematic diagram of the cleaning device provided by an embodiment of the present application;

[0040] Figure 11 is Figure 10 The partial enlarged view at position A in

[0041] Figure 12 Figure 6 of the structural schematic diagram of the cleaning device provided by an embodiment of the present application;

[0042] Figure 13 Figure 7 of the structural schematic diagram of the cleaning device provided by an embodiment of the present application;

[0043] Figure 14 Figure 8 of the structural schematic diagram of the cleaning device provided by an embodiment of the present application;

[0044] Figure 15 Figure 5 of the structural schematic diagram of the internal circulation component provided by an embodiment of the present application;

[0045] Figure 16 The structural schematic diagram of the flexible connector provided by an embodiment of the present application;

[0046] Figure 17 The structural schematic diagram of the lower air duct provided by an embodiment of the present application;

[0047] Figure 18 The structural schematic diagram of the upper air duct provided by an embodiment of the present application;

[0048] Figure 19 The structural schematic diagram of the main body provided by an embodiment of the present application;

[0049] Figure 20 Figure 9 of the structural schematic diagram of the cleaning device provided by an embodiment of the present application;

[0050] Figure 21 is Figure 20 The partial enlarged view at position D in

[0051] Figure 22 Figure 10 of the structural schematic diagram of the cleaning device provided by an embodiment of the present application;

[0052] Figure 23 isFigure 22 Partial enlarged view at position C;

[0053] Figure 24 It is the eleventh structural schematic diagram of the cleaning device provided by the embodiment of the present application;

[0054] Figure 25 is Figure 24 Partial enlarged view at position E;

[0055] Figure 26 It is one of the structural schematic diagrams of the water baffle provided by the embodiment of the present application;

[0056] Figure 27 It is the second structural schematic diagram of the water baffle provided by the embodiment of the present application;

[0057] Figure 28 It is the third structural schematic diagram of the water baffle provided by the embodiment of the present application;

[0058] Figure 29 It is the fourth structural schematic diagram of the water baffle provided by the embodiment of the present application;

[0059] Figure 30 It is the fifth structural schematic diagram of the water baffle provided by the embodiment of the present application;

[0060] Figure 31 It is the sixth structural schematic diagram of the water baffle provided by the embodiment of the present application.

[0061] Reference numerals:

[0062] Inner container 1, cleaning chamber 11, first side 111, second side 112; top wall 12, side wall 13, back plate 14, front end opening 15, bottom wall 16;

[0063] 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, groove 2132, rib 2133;

[0064] 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;

[0065] Lower air duct 215, expansion section 2154, partition plate 2155; main body part 2158, upper connection section 21581, air duct shell 21582, third connection structure 21583, heat dissipation plate 21584, heater installation position 21585, thermostat installation position 21586, cover body 2157, fourth connection structure 21571;

[0066] Flexible connecting piece 217, cover plate 2171, second connecting structure 21711, sleeve 2172, avoidance hole 2173;

[0067] Bottom shell 210, air supply opening 2102; Main air duct 216, grille 2156;

[0068] Fan 22, upper shell 221, mounting shell 2213, impeller 222; Heater 23, water baffle 24, water retaining plate 241, annular rib 2411, mounting structure 242, clamping groove 2421, connecting piece 2422, hollow groove 24221, clamping joint 2423; Main cover body 243, pipe body 2431, ventilation duct 2432, flange 2433, sealed mounting position 24331, convex part 24332, reinforcing rib 24333, water guide opening 2434; Water retaining part 244, first plate 2441, second plate 2442, guiding surface 2443;

[0069] Sealing device 25; Valve 26, air damper 261, first part 2611, first boss 26111, second part 2612, second boss 26121; Thermostat 29;

[0070] Side plate 3, exhaust component 4, air inlet 41, bowl basket 5. Specific implementation mode

[0071] 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 throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0072] The following refers to Figures 1 - 31 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.

[0073] 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 starts, and drying the items in the cleaning chamber can reduce the growth of bacteria. For the convenience of description, the present application will be described by taking a dishwasher as an example.

[0074] As Figure 1 、 Figure 2 And Figure 5 Shown, the cleaning device of the embodiment of the present application includes: inner container 1, exhaust component 4, air duct 21, fan 22 and heater 23.

[0075] The inner container 1 forms a cleaning chamber 11; an exhaust component 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; an air duct 21 is installed on the inner container 1 and has an air inlet 211, a makeup air inlet 2131 and an air outlet 212. Both the air inlet 211 and the air outlet 212 are communicated with the cleaning chamber 11, and the makeup air inlet 2131 is communicated with the outside. A valve 26 is provided in the air duct 21. The valve 26 is configured to close the makeup air inlet 2131 under normal conditions and open under the action of pressure difference; a fan 22 is installed in the air duct 21, and both the air inlet 211 and the makeup air inlet 2131 are communicated with the inlet of the fan 22, and the outlet of the fan 22 is communicated with the air outlet 212; a heater 23 is configured to heat the gas flowing through the air duct 21 when it is turned on.

[0076] Among them, as Figure 1 shown, the inner container 1 includes a top wall 12, a bottom wall 16, a back plate 14, side walls 13 and a front opening 15. The top wall 12, the bottom wall 16, the back plate 14 and the side walls 13 of the inner container 1 enclose the cleaning chamber 11. The top wall 12 of the inner container 1 is the top wall 12 of the cleaning chamber 11, the side walls 13 of the inner container 1 are the sides of the cleaning chamber 11, the back plate 14 of the inner container 1 is the back of the cleaning chamber 11, and the bottom wall 16 of the inner container 1 is the bottom surface of the cleaning chamber 11.

[0077] The cleaning device may further include a cover plate. The cover plate 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.

[0078] 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.

[0079] Such 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.

[0080] 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, so as to realize the flushing of the tableware. Multiple spray arms may be provided, and the multiple spray arms can be installed at different positions of the cleaning chamber 11 to spray the tableware in multiple directions, at multiple angles and at multiple levels, improving the cleaning effect of the tableware.

[0081] The air duct 21 may be used to realize the circulation of air in the cleaning chamber 11 , for example, to realize internal circulation, external circulation, or a mixture of internal and external circulation.

[0082] The air duct 21 can be installed on the outside or inside of the inner container 1. The air duct 21 can be connected to the wall of the inner container 1 by means of clamping, threaded connection or welding.

[0083] like Figure 1 As shown, the air duct 21 has an air inlet 211 and an air outlet 212 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, forming an internal circulation. The hot air can dry the tableware and other items in the cleaning chamber 11.

[0084] The air supply inlet 2131 of the air duct 21 is connected to the outside world, and the external gas is drawn into the air duct 21 by the fan 22. The external gas can enter the cleaning chamber 11 from the air outlet 212 of the air duct 21 after being heated by the heater 23, or it can directly enter the cleaning chamber 11 to balance the air pressure in the cleaning chamber 11 and reduce the vacuum degree in the cleaning chamber 11.

[0085] By providing the air inlet 211 , the air supply inlet 2131 and the air outlet 212 of the air duct 21 , external circulation and / or internal circulation of the cleaning chamber 11 can be achieved, thereby realizing multiple working modes of the cleaning device.

[0086] 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.

[0087] 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.

[0088] By providing a make-up air inlet 2131 for the air duct 21 communicating with the outside, during the operation of the exhaust component 4, the air pressure balance in the cleaning chamber 11 can be maintained through the make-up air inlet 2131, the vacuum degree in the cleaning chamber 11 can be reduced, so that a relatively high exhaust rate can be maintained, the water vapor in the cleaning chamber 11 can be quickly discharged, the overall moisture exhaust rate and drying rate of the cleaning device can be improved, and the energy consumption of hot air drying can be further reduced.

[0089] In this embodiment, the air inlet 211, the make-up air inlet 2131, and the air outlet 212 may be located on the same wall surface of the inner container 1 or on different wall surfaces of the inner container 1, which is specifically set according to the usage scenario. The number and ventilation area of the air inlet 211, the make-up air inlet 2131, and the air outlet 212 of the air duct 21 can be set according to the specific usage scenario.

[0090] Among them, as Figure 6 and Figure 7 shown, the air duct 21 is provided with a valve 26, and the valve 26 can control the connection and disconnection of the external circulation flow path according to the pressure difference between the cleaning chamber 11 and the outside.

[0091] In this embodiment, the valve 26 is used to disconnect the external circulation between the make-up air inlet 2131 and the air outlet 212 under normal conditions, so as to reduce the leakage of water vapor in the cleaning chamber 11 to the outside through the air duct 21 under normal conditions, thereby reducing the condensed water between the inner container 1 and the outer shell of the cleaning device and reducing corrosion and pollution; the valve 26 is used to open under the action of the pressure difference to connect the external circulation between the make-up air inlet 2131 and the air outlet 212. At this time, the make-up air inlet 2131 inhales the outside air, and the air pressure balance in the cleaning chamber 11 can be maintained through the make-up air branch 213, the vacuum degree in the cleaning chamber 11 can be reduced, so that a relatively high exhaust rate can be maintained, the water vapor in the cleaning chamber 11 can be quickly discharged, the overall moisture exhaust rate and drying rate of the cleaning device can be improved, and the energy consumption of hot air drying can be further reduced.

[0092] The valve 26 can be arranged between the make-up air inlet 2131 and the air outlet 212, or can be arranged at the make-up air inlet 2131. The valve 26 can be a fluid valve such as a gate valve, a globe valve or a butterfly valve.

[0093] Among them, the inlet of the fan 22 is communicated with the air inlet 211 of the air duct 21, and the outlet of the fan 22 is communicated with the air outlet 212 of the air duct 21 to drive the gas in the air duct 21 through the fan 22.

[0094] 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.

[0095] The blower 22 is installed in the air duct 21. The blower 22 can be connected to the air duct 21 by means of snap connection, threaded connection, plugging and unplugging, etc. The blower 22 can be installed at the air inlet 211, the air outlet 212 of the air duct 21, or between the air inlet 211 and the air outlet 212. The blower 22 can be a device capable of driving gas flow, such as a centrifugal air supply device, an exhaust fan, or a ventilation and air supply device.

[0096] The blower 22 is communicated with the air inlet 211 and the make-up air inlet 2131 of the air duct 21, so that when the blower 22 is turned on, the gas in the cleaning chamber 11 and / or the outside gas is drawn into the air duct 21, and is discharged from the outlet of the blower 22 into the air outlet 212 of the air duct 21 and then into the cleaning chamber 11 under the drive of the blower 22.

[0097] In the drying working mode of the cleaning device, the dry gas in the cleaning chamber 11 is circularly heated by the heater 23 and reaches a suitable temperature and humidity to perform hot air drying on the tableware in the cleaning chamber 11.

[0098] Among them, the heater 23 can adopt heating methods such as electromagnetic heating, infrared heating, or resistance heating to heat the gas flowing through the air duct 21. The heater 23 adopting resistance heating can be a PTC (Positive Temperature Coefficient) heating device, a resistance wire heating device, a resistance coil heating device, etc.

[0099] When the heater 23 is turned on, it heats the gas flowing through the air duct 21. The heater 23 can be installed in the air duct 21 to directly contact and exchange heat 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.

[0100] In this embodiment, the blower 22 and the heater 23 form the internal circulation component 2 of the cleaning device. The internal circulation component 2 is used to circularly heat the gas in the cleaning chamber 11 and provide the heat required for drying the tableware and the air flow speed required for convection.

[0101] Among them, the exhaust component 4 is a related component capable of creating normal pressure or negative pressure in the cleaning chamber 11. The exhaust component 4 can be a fluid machine with an exhaust function, such as a blower 22 or an air pump. When the cleaning chamber 11 is performing hot air drying, the exhaust component 4 is used to discharge the water vapor that has evaporated or volatilized in the cleaning chamber 11 together with the gas, so as to reduce the relative humidity of the air in the cleaning chamber 11 and facilitate the evaporation of more residual water.

[0102] Among them, the air outlet 212 of the air duct 21 is used to discharge the gas heated by the heater 23 into the cleaning chamber 11. The air inlet 41 of the exhaust assembly 4 is communicated with the cleaning chamber 11, and the air inlet 41 of the exhaust assembly 4 is used to discharge the water vapor that has evaporated or volatilized in the cleaning chamber 11 together with the gas out of the cleaning chamber 11.

[0103] The gas heated by the heater 23 is discharged into the cleaning chamber 11 from the air outlet 212 of the air duct 21. At least part of the hot air is discharged out of the cleaning chamber 11 from the air inlet 41 of the exhaust assembly 4 together with the water vapor. The flow path of at least part of the hot air is from the air outlet 212 of the air duct 21 to the air inlet 41 of the exhaust assembly 4.

[0104] Among them, the internal circulation assembly 2 and the exhaust assembly 4 can operate in a mode of being jointly opened or separately opened.

[0105] When only the internal circulation assembly 2 is operating, the air in the cleaning chamber 11 is circulated and heated, and the heat is also evenly distributed. The 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.

[0106] When only the exhaust assembly 4 is working, due to the lack of external air supplement, the cleaning chamber 11 is pumped into a negative pressure state by the exhaust assembly 4, and the negative pressure environment also helps to improve the drying rate.

[0107] When the internal circulation assembly 2 and the exhaust assembly 4 work simultaneously, the fan 22 can circulate the air in the cleaning chamber 11, making the temperature and humidity distribution in the cleaning chamber 11 uniform, and further improving the effect of uniform drying of the entire cavity.

[0108] According to the cleaning device provided by the embodiments of the present application, by providing an air duct 21 and a valve 26, the air duct 21 has an air inlet 211, a make-up air inlet 2131, and an air outlet 212, and the internal circulation and passive air make-up of the cleaning chamber 11 can be realized. The valve 26 disconnects the connection between the make-up air inlet 2131 and the air outlet 212 under normal conditions to form an internal circulation. 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 an external circulation, on the one hand, 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; at the same time, during the cleaning stage, the blocking of the make-up air inlet 2131 by the valve 26 can reduce the leakage of water vapor in the cleaning chamber 11 to the outside through the air duct 21 under normal conditions, thereby reducing the condensed water between the inner liner 1 and the outer shell of the cleaning device and reducing corrosion and pollution; on the other hand, the valve 26 opens under the action of the pressure difference to connect the make-up air inlet 2131 and the air outlet 212 to form an external circulation. At this time, external gas can be sucked in through the make-up air inlet 2131 to maintain the air pressure balance in the cleaning chamber 11, reduce the vacuum degree in the cleaning chamber 11, thereby improving the exhaust rate, quickly discharging the water vapor in the cleaning chamber 11, improving the overall moisture removal rate and drying rate of the cleaning device, and further reducing the energy consumption of hot air drying.

[0109] In some embodiments, the cleaning device has at least the following multiple working modes:

[0110] First, the cleaning device has a cleaning working mode. In the cleaning working mode, the fan 22, the heater 23, and the exhaust assembly 4 stop operating, and the valve 26 is closed.

[0111] In this embodiment, the valve 26 is closed to block the make-up air inlet 2131 to reduce the leakage of steam to the outside through the air duct 21 in the cleaning working mode, thereby reducing the condensed water between the inner liner 1 and the outer shell of the cleaning device and reducing corrosion and pollution.

[0112] Second, the cleaning device has an internal circulation drying working mode. In the internal circulation drying working mode, the fan 22 and the heater 23 operate, the exhaust assembly 4 stops operating, the valve 26 is opened, and the air flow rate sucked in through the make-up air inlet 2131 ≤ 0.1 * the air flow rate sucked in through the air inlet 211.

[0113] Among them, the air flow rate inhaled by the make-up air inlet 2131 ≤ 0.1 * the air flow rate inhaled by the air inlet 211, that is, the air volume of the internal circulation is much larger than that of the external circulation. For example, the air flow rate inhaled by the make-up air inlet 2131 can be 0.1 * the air flow rate inhaled by the air inlet 211, 0.05 * the air flow rate inhaled by the air inlet 211, or 0.01 * the air flow rate inhaled by the air inlet 211.

[0114] During the operation of only the fan 22, in order to maintain the pressure balance in the cleaning chamber 11, the fan 22 will try to suck only the air in the cleaning chamber 11 as much as possible to achieve a basic internal circulation. At this time, the air volume of the internal circulation is much larger than that of the external circulation, so that the temperature and humidity in the cleaning chamber 11 can be quickly increased.

[0115] In the internal circulation drying working mode, 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 air in the cleaning chamber 11 is circulated and heated, and the heat is evenly distributed. The cooler 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 whole chamber in the cleaning chamber 11 and reduces the drying dead corners.

[0116] When the temperature and humidity in the cleaning chamber 11 are too low, by turning on the fan 22 and the heater 23, forced convection and circulating heating in the cleaning chamber 11 can be realized, and the water remaining in the cleaning chamber 22 can be evaporated acceleratedly.

[0117] Thirdly, the cleaning device has a mixed working mode; in the mixed working mode, the fan 22, the heater 23 and the exhaust component 4 all work, the valve 26 is opened, and the air flow rate inhaled by the air inlet 211 ≤ the air flow rate inhaled by the make-up air inlet 2131.

[0118] In the mixed working mode, the fan 22, the heater 23 and the exhaust component 4 all work. The fan 22 can circulate the air in the cleaning chamber 11 to make the temperature and humidity distribution in the cleaning chamber 11 uniform, and further improve the effect of uniform drying of the whole chamber.

[0119] In this embodiment, when the fan 22 and the exhaust component 4 work simultaneously, the air in the cleaning chamber 11 inhaled by the fan 22 is less than the flow rate of the outside air inhaled from the make-up air inlet 2131. The exhaust component 4 extracts and discharges the air in the cleaning chamber 11. At this time, the fan 22 will mainly introduce the outside air, and a small amount of the air in the chamber is inhaled for circulation. At this time, the internal and external circulations are carried out simultaneously, which can effectively meet the rapid dehumidification requirements in the dehumidification stage.

[0120] Fourthly, the cleaning device has a dehumidification working mode;

[0121] In the moisture exhaust working mode, the blower 22 and the heater 23 are shut down, the exhaust assembly 4 works, the valve 26 is opened. Due to the supplement of external air, air circulation is formed in the cleaning chamber 11. At this time, the moisture in the cleaning chamber 11 is quickly extracted by the exhaust assembly 4, realizing rapid moisture exhaust.

[0122] Fifthly, the cleaning device has a mixed moisture exhaust working mode;

[0123] In the mixed moisture exhaust working mode, both the blower 22 and the exhaust assembly 4 work, and the heater 23 is shut down, 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 in the whole chamber.

[0124] In some embodiments, as Figure 3 and Figure 7 shown, the inlet of the blower 22 is arranged facing the lower air inlet 211, and is spaced apart from the bottom shell 210 of the air duct 21 to form a lateral air supplement port 2102, and the air supplement port 2102 is communicated with the air supplement inlet 2131.

[0125] In this embodiment, as shown in the figure, the position of the blower 22 is moved upward in the direction away from the bottom shell 210 of the air duct 21, the inlet of the blower 22 faces the air inlet 211 of the air duct 21, and an air supplement port 2102 capable of sucking external gas at the same time is introduced on the side of the air inlet 211 of the air duct 21.

[0126] During the operation of the blower 22, the blower 22 simultaneously introduces the air outside and in the cleaning chamber 11 to realize the simultaneous progress of the internal circulation and the external circulation. As Figure 3 shown, the solid arrows in the figure are the external circulation, and the air is supplemented through the air supplement branch 213 of the air duct 21, and the hollow arrows are the internal circulation. The air inlet 211 is arranged in the cleaning chamber 11, and the blower 22 sucks the gas in the cleaning chamber 11 into the air duct 21 through the air inlet 211 for internal circulation heating.

[0127] In this embodiment, the valve 26 is arranged between the inlet of the blower 22 and the air supplement port 2102. During the operation of the blower 22, when the whole cleaning device system is in the drying process or the storage process, the air volume at the inlet of the blower 22 pushes the valve 26 to open. At this time, the air supplement port 2102 is opened, and the cleaning device presents a double circulation state inside and outside.

[0128] In some embodiments, as Figure 8 and Figure 9 shown, the cleaning chamber 11 has a first side surface 111 and a second side surface 112 arranged oppositely. 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 less than the distance from the center of the air inlet 211 to the first side surface 111.

[0129] In this embodiment, the exhaust component 4 can be installed on the first side 111. The exhaust component 4 and the air outlet 212 are respectively located on the relatively arranged first side 111 and the second side 112, 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 far from the exhaust component 4.

[0130] By arranging the exhaust component 4 and the air outlet 212 on the relatively arranged sides and arranging the air inlet 211 far 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.

[0131] In some embodiments, as Figure 7 and Figure 11 shown, the fan 22 includes: an upper shell 221, an impeller 222 and a motor assembly. The motor assembly is power-coupled to the impeller 222. The upper shell 221 of the air duct 21 has a downwardly protruding mounting shell 2213. The upper shell 221 is connected to the mounting shell 2213 to form a receiving cavity. The impeller 222 is installed in the receiving cavity. The mounting shell 2213 is spaced apart from the bottom shell 210 of the air duct 21 to form an air supply port 2102.

[0132] In this embodiment, the fan 22 is installed above the top wall 12 of the inner tank 1. The fan 22 can only retain the upper shell 221, the impeller 222 and the motor assembly, and the original lower shell of the fan 22 is omitted, reducing the overall size of the fan 22. A larger model of the fan 22 can be installed in the same space, and the air duct 21 replaces the lower shell of the fan 22, and the impeller 222 is directly installed in the air duct 21, increasing the air inlet area of the air inlet 211 and increasing the air intake.

[0133] In some embodiments, as Figure 5 and Figure 11 shown, a sealing device 25 is provided between the fan 22 and the air duct 21. The sealing device 25 can be a sealing ring, a tape or a filling glue, etc., to seal the gaps between the inner tank 1, the fan 22 and the air duct 21 of the cleaning device.

[0134] At the same time, the entire impeller 222 and the motor assembly are wrapped between the air duct 21 and the upper shell 221 of the fan 22, and a sealing method is adopted in the middle. During the operation of the entire cleaning device, the inner tank 1, the fan 22 and the air duct 21 of the cleaning device belong to a closed space, which can reduce the amount of water vapor leaking out through the installation gap between the fan 22 and the air duct 21 at each stage and reduce potential hazards.

[0135] In some embodiments, sealing devices 25 and nuts are provided at both the air inlet 211 and the air outlet 212 of the air duct 21. The nuts are tightened in a snap - fit form to compress the sealing devices 25. The sealing devices 25 are located between the air duct 21 and the inner tank 1, reducing the leakage of water in the cleaning chamber 11 from the gap between the air duct 21 and the inner tank 1, reducing the risk of water leakage, and improving the reliability of the cleaning device.

[0136] In some embodiments, as Figure 1 and Figure 4 shown, the blower 22 is installed above the top wall 12 of the inner tank 1. The air duct 21 includes a main air duct 216 and a make - up air branch 213. The make - up air branch 213 is located between the main air duct 216 and the top wall 12 of the inner tank 1. The valve 26 is installed on the wall surface between the make - up air branch 213 and the main air duct 216.

[0137] Among them, the blower 22 is installed above the top wall 12 of the inner tank 1, without occupying the internal space of the cleaning chamber 11, thereby increasing the capacity of the cleaning chamber 11.

[0138] Among them, the blower 22 can be installed above the top wall 12 of the cleaning chamber 11, with the air suction side of the blower 22 facing the inside of the cleaning chamber 11. When the blower 22 operates, it can introduce the hot air at the upper part of the cleaning chamber 11 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.

[0139] In actual use, when the cleaning device is configured 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 blower 22 can prevent a large amount of humid - hot air from remaining above the cleaning chamber 11, reducing the drying dead - angle, and being beneficial to improving the overall drying effect and rate. [[ID=,17]]

[0140] In this embodiment, the blower 22 can be installed above the top wall 12 of the cleaning chamber 11, and the thickness of the blower 22 is not less than 20 mm. For example, the thickness of the blower 22 can be 5 mm, 10 mm, 15 mm or 18 mm. By setting the thickness of the blower 22, it can be applicable to various sizes between the top wall 12 of the inner tank 1 and the outer shell of the cleaning device, increasing the circulating air volume, thereby enabling a higher power of the heater 23 and a better drying effect.

[0141] In this embodiment, the main air duct 216 has an air inlet 211 and an air outlet 212. The blower 22 is installed in the main air duct 216. One end of the make - up air branch 213 is communicated with the make - up air port 2102, and the other end of the make - up air branch 213 forms a make - up air inlet 2131.

[0142] By providing a make-up air branch 213, an external circulation and / or an internal circulation of the cleaning chamber 11 can be achieved, so as to implement multiple working modes of the cleaning device.

[0143] The valve 26 can be pivotally connected between the make-up air branch 213 and the main air duct 216, or can be connected between the make-up air branch 213 and the main air duct 216 through an elastic member such as a spring. The valve 26 can be fixed between the make-up air branch 213 and the main air duct 216 under pressure to open or close the make-up air branch 213.

[0144] In some embodiments, such as Figure 9 and Figure 10 as shown, the air inlet 211 is located in the area of the top wall 12 of the inner tank 1 close to the back plate 14, and the make-up air inlet 2131 is arranged forward.

[0145] Among them, the center of the air inlet 211 is located in the rear half of the whole cleaning device, which can reduce the influence of the air inlet 211 on the pushing and pulling of the bowl basket 5, so as to increase the depth of the bowl basket 5 and improve the accommodation capacity of the bowl basket 5.

[0146] Among them, the make-up air inlet 2131 is arranged forward, that is, the make-up air inlet 2131 is arranged to open towards the front section of the inner tank 1, which can avoid the installation position of the air inlet 211, increase the installation space of the make-up air inlet 2131, and increase the size of the make-up air inlet 2131.

[0147] In some embodiments, such as Figure 9 as shown, the air inlet 211 is arranged in the area of the top wall 12 of the cleaning chamber 11 close to the side and the back plate 14.

[0148] In this embodiment, the air inlet 211 is located at the rear corner of the top wall 12 of the cleaning chamber 11, which can further reduce the influence of the air inlet 211 on the pushing and pulling of the bowl basket 5, so as to increase the depth and width of the bowl basket 5 and improve the accommodation capacity of the bowl basket 5.

[0149] In some embodiments, such as Figure 6 and Figure 7 as shown, the valve 26 includes a damper 261 pivotally mounted on the wall surface between the make-up air branch 213 and the main air duct 216. The first part 2611 of the damper 261 is located in the make-up air branch 213, and the second part 2612 of the damper 261 is located in the main air duct 216. The damper 261 is configured to block the make-up air branch 213 under the action of gravity and open when the fan 22 is turned on.

[0150] Among them, the damper 261 can be a flap with an adjustable opening angle, and the air flow rate is controlled by adjusting the opening angle of the flap. The area of the damper 261 is not less than the ventilation areas of the make-up air inlet 2131 and the air inlet 211.

[0151] In this embodiment, the air damper 261 can be a flap structure. The air damper 261 is rotatable about a pivot axis. The first part 2611 of the air damper 261 extends into the make-up air branch 213. The area of the first part 2611 of the air damper 261 extending into the make-up air branch 213 matches the cross-sectional area of the make-up air branch 213. The second part 2612 of the air damper 261 extends into the main air duct 216, and the area of the second part 2612 of the air damper 261 extending into the main air duct 216 is smaller than the cross-sectional area of the main air duct 216.

[0152] When the blower 22 is not working, the air damper 261 is in a vertical state due to gravity. At this time, the first part 2611 of the air damper 261 closes the make-up air branch 213 to reduce steam leakage during cleaning and other processes. When the blower 22 is working and the entire system is in the drying process or storage process, the second part 2612 of the air damper 261 rotates under the suction force of the blower 22 until the air damper 261 is in a parallel state. At this time, the air damper 261 opens the make-up air branch 213, and the cleaning device presents an internal and external double circulation state.

[0153] By providing the air damper 261 pivotally mounted on the wall surface between the make-up air branch 213 and the main air duct 216, the pressure difference can be utilized to push the air damper 261 to rotate, thereby realizing multiple working states of the cleaning device without external energy, with a simple structure and energy saving.

[0154] In some embodiments, as Figure 7 shown, the wall surface between the make-up air branch 213 and the main air duct 216 has a groove 2132 recessed towards the make-up air branch 213. The air damper 261 is pivotally mounted on the side wall 13 of the groove 2132 close to the blower 22, so that when the valve 26 is opened, the first part 2611 is located behind the side wall 13 of the groove 2132 close to the blower 22, and the second part 2612 is located in the groove 2132.

[0155] Among them, the concave side of the groove 213 is matched with the second part 2612 of the air damper 261, and the second part 2612 is located in the groove 2132 when the air damper 261 is fully opened.

[0156] By providing the groove 2, when the air damper 261 is opened, the first part 2611 is located behind the side wall 13 of the groove 2132 close to the blower 22, and the second part 2612 is located in the groove 2132, so that the rotation angle of the air damper 261 can be increased, the air inlet area of the make-up air inlet 2131 can be increased, thereby increasing the air intake volume inhaled from the outside, and at the same time reducing the influence of the second part 2612 of the air damper 261 on the ventilation volume of the main air duct 216.

[0157] In some embodiments, as Figure 7As shown, the first part 2611 is provided with a first boss 26111, and the first boss 26111 is used to abut against the wall surface of the make-up air branch 213 when the valve 26 is closed; the second part 2612 is provided with a second boss 26121, and the second boss 26121 is used to abut against the wall surface of the main air duct 216 when the valve 26 is opened.

[0158] Among them, the first boss 26111 and the second boss 26121 are arranged on the same side of the air damper 261, or can be arranged on different sides of the air damper 261. By arranging the first boss 26111 and the second boss 26121, the functions of limiting and protecting the air damper 261 can be achieved. At the same time, the contact area between the first part 2611 and the wall surface of the make-up air branch 213 is reduced, and the contact area between the second part 2612 and the wall surface of the main air duct 216 is reduced, so that the suction force between the first part 2611 and the wall surface of the make-up air branch 213 can be reduced, and the suction force between the second part 2612 and the wall surface of the main air duct 216 can be reduced, thereby reducing the force threshold for opening the air damper 261.

[0159] In some embodiments, as Figure 7 shown, the lower wall surface of the make-up air branch 213 is provided with a convex rib 2133 protruding upward, and the first part 2611 abuts against the convex rib 2133 when the valve 26 is closed.

[0160] Among them, the convex rib 2133 is used to limit the air damper 261, so that the first part of the air damper 261 can only rotate in the direction close to the make-up air inlet 2102, preventing the first part 2611 of the air damper 261 from rotating in the direction of the make-up air inlet 2131, so that the air damper 261 functions as a one-way valve.

[0161] In some embodiments, 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 make-up air inlet 2131, that is, when the exhaust component 4 is opened, the cleaning chamber 11 is pumped to normal pressure or negative pressure by the exhaust component 4. In other words, when the make-up air branch 213 supplies air, the cleaning chamber 11 is at normal pressure or negative pressure, and when the make-up air branch 213 does not supply air, the cleaning chamber 11 is at negative pressure.

[0162] In the related art, the single internal circulation scheme helps to circulate and heat the gas to be dried in the cleaning chamber 11 to a suitable temperature. However, in the single internal circulation scheme, the exhaust component 4 also needs to gradually discharge the evaporated water vapor. During the discharge stage, there is no introduction of external gas, and the exhaust component 4 will gradually pump the cleaning chamber 11 to negative pressure. The negative pressure causes a gradual decrease in the exhaust rate, resulting in that the overall moisture discharge rate of the cleaning equipment is not well improved.

[0163] By providing a make-up air branch 213, when the exhaust component 4 operates, the air pressure balance inside the cleaning chamber 11 can be maintained through the make-up air branch 213, reducing the vacuum degree inside the cleaning chamber 11. Thus, a relatively high exhaust rate can be maintained, the water vapor inside the cleaning chamber 11 can be quickly discharged, the overall moisture removal rate and drying rate of the cleaning device can be improved, and the energy consumption of hot air drying can be further reduced.

[0164] 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 a region of the air duct 21 on the side of the inner tank 1, the side plate 3 is installed on the side wall 13 of the inner tank 1, and the side plate 3 covers at least a part of the outside of the air duct 21.

[0165] 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.

[0166] Wherein, the heater 23 and at least a 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 a part of the air duct 21, and at the same time, can reduce the risk of people touching the high-voltage components and high-temperature heating components, improving safety.

[0167] 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, and the spacing c satisfies: c≥2mm.

[0168] Wherein, 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.

[0169] 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.

[0170] It can be understood that the heater 23 is installed in the region 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 high-voltage terminals, and the high-voltage terminals are directly connected to high voltage.

[0171] On the premise 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 prevent the side plate 3 from directly touching the high-voltage and high-temperature heating components, improving the safety of the cleaning device; on the other hand, the wall temperature outside the side plate 3 can be controlled within a safe range, reducing the risk of people being scalded when touching the side wall 13. In the case of the built-in installation of the cleaning device, it can reduce the high temperature of the side plate 3 from damaging the inner wall of the installation cabinet.

[0172] In some embodiments, the power of the heater 23 is P, satisfying: P ≤ 500 W.

[0173] Among them, the power P of the heater 23 can be 150 W, 200 W, 350 W, 400 W or 500 W, and can be specifically limited according to the usage situation.

[0174] In the related art, for the cleaning device with the external circulation hot air drying mode, due to the limited installation position, the size of the fan 22 and the power of the heater 23 are small, and the hot air drying can only be used as an auxiliary energy source, while the high-temperature rinsing is the main energy source. Therefore, the tableware washed by hand needs a relatively long time for single drying operation, which is not convenient.

[0175] 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.

[0176] In some embodiments, the cleaning device at least has the following working modes:

[0177] First, the cleaning device has an internal circulation drying working mode.

[0178] In the internal circulation drying working mode, the fan 22 and the heater 23 work, and the exhaust component 4 stops. 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 air in the cleaning chamber 11 is circularly heated, and the heat is also evenly distributed. The relatively cold area 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 whole chamber in the cleaning chamber 11 and reduces the drying dead angle.

[0179] Second, the cleaning device has a moisture exhaust negative pressure working mode;

[0180] In the moisture exhaust negative pressure working mode, the fan 22 and the heater 23 stop, and the exhaust component 4 works. Due to the lack of external air supplement, the cleaning chamber 11 is pumped into a negative pressure state by the exhaust component 4, and the negative pressure environment also helps to improve the drying rate.

[0181] Third, the cleaning device has a mixed working mode;

[0182] In the mixed working mode, the fan 22, the heater 23 and the exhaust component 4 all work. The fan 22 can circulate the air 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.

[0183] In some embodiments, the cleaning device further includes a water baffle 24, which is installed at the air inlet 211. The water baffle 24 can be connected to the air inlet 211 by means of threaded connection, plug-in connection, pivot connection or snap connection.

[0184] The water baffle 24 has the functions of ventilation and water blocking. The water baffle 24 can be arranged between the blower 22 and the cleaning chamber 11, and the water baffle 24 is located inside the cleaning chamber 11. When the blower 22 is turned on, the blower 22 can draw the gas in the cleaning chamber 11 into the installation position of the blower 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 blower 22 and the heater 23 in the air duct 21, playing a protective role.

[0185] In some embodiments, as Figure 5 shown, the air outlet 212 is provided with a grille 2156.

[0186] 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.

[0187] 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.

[0188] 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 to the lower rear side of the cleaning chamber 11, so as to extend the flow path of the hot air in the cleaning chamber 11, increase the area of the gas heated by the heater 23 flowing through the entire cleaning chamber 11, improve the full-chamber drying and dead-angle drying effects of the cleaning chamber 11, and reduce the amount of hot air discharged by the exhaust assembly 4 without being utilized, increasing the utilization efficiency of the hot air heat energy.

[0189] 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.

[0190] As Figure 14 and Figure 15 shown, the cleaning device according to 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.

[0191] The upper air duct 214 is provided with an air inlet 211 of the air duct structure; one end of the flexible connector 217 is connected to the lower port of the upper air duct 214; the upper port of the lower air duct 215 is connected to the other end of the flexible connector 217, and the lower air duct 215 is provided with an air outlet 212 of the air duct structure; wherein, the air inlet 211 and the air outlet 212 are not coplanar.

[0192] Wherein, the gas enters the air duct structure from the air inlet 211 of the air duct structure, flows through the upper air duct 214, the flexible connector 217 and the lower air duct 215 in sequence, and finally flows out from the air outlet 212 of the air duct structure. The air inlet 211 of the air duct structure is communicated with the air inlet 41 of the fan 22.

[0193] Wherein, both ends of the flexible connector 217 are respectively connected to the lower port of the upper air duct 214 and the upper port of the lower air duct 215, and the flexible connector 217 can be connected to the lower port of the upper air duct 214 and the upper port of the lower air duct 215 through detachable connection methods such as plug-in connection, clamp connection or fixture connection.

[0194] 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.

[0195] By setting the detachable connection method between the flexible connector 217 and the lower port of the upper air duct 214 and the upper port of the lower air duct 215, it is convenient to replace the combination of the upper air duct 214 and the lower air duct 215 of different types and sizes, and the included angle relationship between the upper air duct 214 and the lower air duct 215 can be changed by bending the flexible connector 217, so that the air duct structure can be installed in the inner tank 1 of cleaning devices with various heights.

[0196] 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, the installation plane of the fan 22 and the inner circulation outlet of the cleaning chamber 11 are usually arranged on different surfaces of the cleaning chamber 11. However, the applicant has found through research that when the installation plane of the fan 22 and the inner circulation outlet of the cleaning chamber 11 are on different surfaces, when the cleaning chamber 11 and the air duct structure are assembled, tolerance and sealing problems will occur, and the assembly difficulty and the later use effect are poor.

[0197] The air duct structure of the embodiment of the present application is configured with a split structure of an upper air duct 214 and a lower air duct 215, with a flexible connector 217 between the upper air duct 214 and the lower air duct 215, and the air inlet 211 of the air duct structure is not coplanar with the air outlet 212 of the air duct structure. It can be adapted to cleaning equipment in which the installation plane of the fan 22 and the internal circulation outlet of the cleaning chamber 11 are located on different surfaces. When assembled with the cleaning equipment, the tolerances generated during the production process of the inner liner 1 can be compensated by replacing the upper air duct 214 and the lower air duct 215 of different lengths and sizes, thereby reducing the difficulty of assembly. At the same time, it can be adapted to cleaning equipment of different heights, thereby improving the reliability and usage scenarios of use.

[0198] In some embodiments, as Figure 16 As 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. The lower surface of the horizontal section 2141 is provided with an air inlet 211, and the flexible connector 217 is connected to the lower connecting section 2142.

[0199] Among them, the horizontal section 2141 and the lower connecting section 2142 are respectively located on different surfaces of the cleaning chamber 11. By setting the downwardly extending lower connecting section 2142, the upper air duct 214 can be distributed on different surfaces, thereby adapting to cleaning equipment in which the installation plane of the fan 22 and the internal circulation outlet of the cleaning chamber 11 are located on different surfaces.

[0200] In some embodiments, as Figure 16 As 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, and the two ends of the sleeve 2172 are respectively connected to the lower port of the upper air duct 214 and the upper port of the lower air duct 215, and the cover plate 2171 covers the outside of the upper air duct 214 and closes the opening.

[0201] In this embodiment, the lower surface of the upper air duct 214 and the cover plate 2171 form a receiving cavity for installing the fan 22. The cover plate 2171 can be connected to the opening of the upper air duct 214 by plug-in connection, snap connection or bolt connection.

[0202] The sleeve 2172 may be a connecting tube made of rubber or plastic, and both ends of the sleeve 2172 are respectively connected to the lower port of the upper air duct 214 and the upper port of the lower air duct 215 .

[0203] In some embodiments, both ends of the sleeve 2172 are respectively connected to the connecting section and the upper port of the downwind duct 215, and at least a portion of the cover plate 2171 is connected to the horizontal section 2141 and closes the opening.

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

[0205] First, the cover plate 2171 is completely located on the side of the fan 22 facing the cleaning chamber 11. The cover plate 2171 can be completely connected to the horizontal section 2141 of the upper air duct 214. At least a part of the sleeve 2172 extends into the side of the fan 22 facing the cleaning chamber 11 and is connected to the cover plate 2171.

[0206] At least a part of the sleeve 2172 is a flexible structure, so that one end of the sleeve 2172 can be bent and deformed towards 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 towards the other side of the cleaning chamber 11 where the lower port of the upper air duct 214 is located, so as to facilitate the sleeve 2172 to be sleeved with the lower port of the upper air duct 214 and the upper port of the lower air duct 215.

[0207] Second, a part of the cover plate 2171 covers the upper surface of the upper air duct 214, and a part covers the bent part of the upper air duct 214 extending towards the side.

[0208] In this embodiment, a part of the cover plate 2171 is located on the side of the fan 22 facing the cleaning chamber 11, and another part of the cover plate 2171 covers the bent part of the upper air duct 214 extending towards the side.

[0209] In this embodiment, at least a part of the cover plate 2171 is a flexible structure, so that after the two ends of the sleeve 2172 are respectively sleeved with the lower port of the upper air duct 214 and the upper port of the lower air duct 215 on a certain side of the cleaning chamber 11, the cover plate 2171 can be bent and deformed towards the other side where the fan 22 is located, so as to cover the outside of the upper air duct 214 and seal the opening.

[0210] 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.

[0211] 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. The first connection structure 2143 is connected to the second connection structure 21711.

[0212] Among them, the side wall 13 of the upper air duct 214 is assembled with the cover plate 2171. 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.

[0213] When the side wall 13 of the upper air duct 214 and the cover plate 2171 are connected by a plug-and-play 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. The plug is inserted into the socket to connect the side wall 13 of the upper air duct 214 and the cover plate 2171 together.

[0214] When the side wall 13 of the upper air duct 214 and the cover plate 2171 are connected 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. 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.

[0215] In some embodiments, the first connection structure 2143 cooperates with the second connection structure 21711. The first connection structure 2143 can be provided with multiple ones, 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.

[0216] In some embodiments, the upper cover plate 2171 is made of rubber material. The upper half of the upper cover plate 2171 can be bent and covered on the upper surface of the air duct 21, reducing problems such as vibration of the motor assembly of the fan 22, vibration between the fan 22 and the top outer plate, and aerodynamics generated by the fan 22, and effectively reducing the noise index during the operation of the cleaning device.

[0217] 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 connecting member 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.

[0218] In this embodiment, the main body portion 2158 can be made of a light material, such as hard plastic or metal, etc.; the cover body 2157 is made of a flexible material, such as rubber or plastic, etc.

[0219] Among them, the main body portion 2158 and the cover body 2157 can be connected by connection methods such as plug-and-play connection, clamp connection or fixture connection, etc., so as to facilitate disassembly and replacement.

[0220] By setting the main body part 2158 of the lower air duct 215 to be made of a rigid material and the cover 2157 to be made of a flexible material, a good sealing effect can be achieved, and the overall lower air duct 215 can reduce the risks of air leakage and water leakage, improving the reliability of the air duct structure.

[0221] In some embodiments, a sealing strip may be provided between the main body part 2158 and the cover 2157 to further improve the sealing performance between the main body part 2158 and the cover 2157 and enhance the reliability of the air duct structure.

[0222] In some embodiments, as Figure 19 shown, the main body part 2158 includes: an upper connection section 21581 and an air duct housing 21582.

[0223] The lower end of the flexible connector 217 is sleeved on the upper connection section 21581; the air duct housing 21582 is connected to the upper connection section 21581, the outer side surface of the air duct housing 21582 is open, and an air outlet 212 is provided, and the cover 2157 covers the air duct housing 21582.

[0224] Among them, the lower end of the flexible connector 217 and the upper connection section 21581 may be in interference fit to improve the sealing performance of the connection between the lower end of the flexible connector 217 and the upper connection section 21581.

[0225] In some embodiments, as Figure 15 and Figure 18 shown, a third connection structure 21583 is provided on the outer peripheral wall of the upper connection section 21581, an avoidance hole 2173 is provided at the lower end of the flexible connector 217, and a fourth connection structure 21571 is provided on the cover 2157. The third connection structure 21583 passes through the avoidance hole 2173 and is connected to the fourth connection structure 21571.

[0226] Among them, the third connection structure 21583 and the fourth connection structure 21571 may be connected by snap connection, threaded connection or plug - and - play connection.

[0227] The third connection structure 21583 passing through the avoidance hole 2173 can fix the connection between the flexible connector 217 and the upper connection section 21581. The third connection structure 21583 passing through the avoidance hole 2173 and being connected to the fourth connection structure 21571 can fix the connection among the upper connection section 21581, the cover 2157 and the flexible connector 217.

[0228] When the third connecting structure 21583 and the fourth connecting structure 21571 are connected by snap connection, the third connecting structure 21583 can be a fixed snap, and the fourth connecting structure 21571 can be a sliding snap. When the lower end of the flexible connecting member 217 is sleeved on the upper connecting section 21581, the third connecting structure 21583 penetrates through the avoidance hole 2173, and at least part of the third connecting structure 21583 can extend out of the avoidance hole 2173, so that the flexible connecting member 217 can be fixedly connected to the upper connecting section 21581. When the fourth connecting structure 21571 slides into the third connecting structure 21583, the upper connecting section 21581, the cover body 2157 and the flexible connecting member 217 can be fixedly connected to each other.

[0229] When the third connecting structure 21583 and the fourth connecting structure 21571 are connected by threaded connection, the third connecting structure 21583 can be a bump 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 penetrates through the avoidance hole 2173, and 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.

[0230] In some embodiments, as Figure 19 shown, the air duct housing 21582 is provided with a heater installation position 21585 for installing the heater 23 and a thermostat installation position 21586 for installing the thermostat 29.

[0231] Among them, the heater installation position 21585 is used to install the heater 23, and the heater 23 can be installed on the heater 23 through connection methods such as plug-in 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.

[0232] The thermostat installation position 21586 is used to install the thermostat 29, and the thermostat 29 can be installed on the thermostat installation position 21586 through connection methods such as plug-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.

[0233] Among them, both the heater installation position 21585 and the thermostat installation position 21586 are located inside the air duct housing 21582, that is, the heater 23 and the thermostat 29 are installed in the same space.

[0234] In some embodiments, as Figure 19As shown, along the gas flow direction, the heater installation position 21585 and the thermostat installation position 21586 are installed in sequence, so that the air flow is heated by the heater 23 and then the temperature is measured by the thermostat 29.

[0235] By installing both the thermostat 29 and the heater 23 inside the air duct housing 21582, the thermostat 29 can monitor the temperature inside the air duct housing 21582 in real time. In the case of sudden stall or damage of the fan 22, the thermostat 29 can detect the 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.

[0236] In some embodiments, as Figure 15 shown, a heat sink 21584 is installed inside the air duct housing 21582. The heat sink 21584 can be connected to the air duct housing 21582 by threaded connection, plug-in 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.

[0237] Among them, the heat sink 21584 is arranged inside the air duct housing 21582 and on the side of the heater installation 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. Due to the good thermal conductivity of the heat sink 21584, the local high temperature near the heater 23 can be quickly diffused to the surrounding areas, which can reduce the occurrence of local high temperature inside the air duct housing 21582, and at the same time can also reduce the damage to the human body or the cabinet after embedded installation caused by the too high temperature outside the air duct housing 21582.

[0238] In some embodiments, as Figure 20 shown, the lower air duct 215 is provided with a heater installation position 21585, and an expansion section 2154 is provided between the inlet end of the lower air duct 215 and the heater installation position 21585. The flow area of the expansion section 2154 gradually increases from the end close to the inlet end of the lower air duct 215 to the end close to the heater installation position 21585.

[0239] Among them, the lower air duct 215 includes a heater installation position 21585 and the inlet end of the lower air duct 215. The flow area of the inlet end of the lower air duct 215 is smaller than the flow area of the heater installation position 21585. The heater installation position 21585 is arranged at the rear side of the inlet end of the lower air duct 215, and the air flow flows from the inlet end of the lower air duct 215 to the heater installation position 21585.

[0240] Among them, the heater installation position 21585 is used to install the heater 23, and the heater 23 is configured to heat the gas flowing through the lower air duct 215 when it is turned on. The fan 22 can be installed at the inlet end of the lower air duct 215 or at a position close to the inlet end of the lower air duct 215 to draw the gas from the inlet end of the lower air duct 215 into the lower air duct 215 and drive the gas to flow along the lower air duct 215 to the heater installation position 21585.

[0241] In this embodiment, the expansion section 2154 can be of an axisymmetric 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.

[0242] According to the lower air duct 215 provided by the embodiment of the present application, by providing an expansion section 2154 between the inlet end of the lower air duct 215 and the heater installation position 21585, and the flow area of the expansion section 2154 gradually increases from the end close to the inlet end of the lower air duct 215 to the end close to the heater installation position 21585. On the one hand, the speed of the air flow entering from the inlet end of the lower air duct 215 can be reduced, the contact time between the gas and the heater 23 can be extended, and the heating effect can be increased; on the other hand, the air volume can be blown more evenly onto the surface of the heater 23, reducing the local high-temperature phenomenon, and improving the safety and reliability of the use of the lower air duct 215.

[0243] In some embodiments, as Figure 20 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 installation position 21585.

[0244] Among them, the front side wall 13 of the expansion section 2154 has an included 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 is blown more evenly onto the heater 23, reducing the local high temperature and restricting the power of the heater 23, playing a role in pressure expansion and flow stabilization.

[0245] In some embodiments, as Figure 20 shown, the inclination angle of the front side wall 13 of the expansion section 2154 with the vertical direction is γ, satisfying: 10° ≤ γ ≤ 45°.

[0246] 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°, which can be specifically set according to the actual use scenario.

[0247] By setting the inclination angle range of the front side wall 13 of the expansion section 2154 with respect to 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 heater 23 below, reducing local overheating and limiting the power of the heater 23.

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

[0249] The thermostat installation position 21586 is used to install the thermostat 29, and the thermostat 29 can be installed in 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.

[0250] 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 control the cleaning device to stop working, which can effectively reduce risks and improve the safety of the cleaning device.

[0251] Among them, the position of the thermostat installation position 21586 in the lower air duct 215 has at least the following two structures:

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

[0253] 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.

[0254] 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 control the cleaning device to stop working in time when the temperature is abnormal, further reducing risks and improving the safety of the cleaning device.

[0255] 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.

[0256] In this embodiment, if the fan 22 suddenly stalls or is damaged, 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.

[0257] Second, as Figure 21As 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.

[0258] 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 when the temperature of the heater 23 is abnormal, it can timely control the cleaning device to stop working, further reducing risks and improving the safety of the cleaning device.

[0259] 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 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 heat-conducting and insulating material.

[0260] Among them, the partition plate 2155 can be made of a heat-conducting and insulating material such as ceramics, graphene, mica or silica gel. The partition plate 2155 can be connected to the inner side of the thermostat installation position 21586 by plug-in connection, threaded connection or snap connection.

[0261] In this embodiment, by providing the partition plate 2155 made of a heat-conducting and insulating material, on the one hand, the thermostat 29 that needs to be connected to strong electricity 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, strengthening the insulation protection and reducing potential safety hazards; on the other hand, the partition plate 2155 also has a heat-conducting function, and can timely reflect the temperature at the heater 23 to the thermostat 29, so as to cut off the entire system when the thermostat 29 detects an abnormal temperature, improving the safety of the cleaning device.

[0262] It can be understood that since the lower air duct 215 and the cleaning chamber 11 belong to the same closed space, the space is filled with a large amount of conductive water vapor, and the thermostat 29 needs to be connected to strong electricity. If the thermostat 29 directly contacts the water vapor, there are potential safety hazards.

[0263] As Figure 22 and Figure 23 shown, the cleaning device of the embodiment of the present application further includes an air duct 21. 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 communicated. 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 relatively; among them, the first air guiding section 2147 is provided with a volute tongue 2148, and the flow area at the volute tongue 2148 gradually increases from one end close to the fan installation position 2146 to one end close to the second air guiding section 2149.

[0264] Among them, the fan installation position 2146 is used to install the fan 22. The fan installation position 2146 and the first air guide section 2147 are on the same side of the cleaning chamber 11. For example, both the fan installation position 2146 and the first air guide 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.

[0265] The first air guide section 2147 and the second air guide section 2149 are bent relative to each other. The first air guide section 2147 and the second air guide section 2149 are on adjacent sides of the cleaning chamber 11. For example, the first air guide section 2147 is located on the top surface of the cleaning chamber 11, and the second air guide section 2149 is located on the side surface of the cleaning chamber 11; or the first air guide section 2147 is located on the side surface of the cleaning chamber 11, and the second air guide section 2149 is located on the bottom surface of the cleaning chamber 11.

[0266] Among them, the angle at which the first air guide section 2147 and the second air guide section 2149 are bent relative to each other can be 90°, 180° or other angles, which can be specifically set according to the installation environment of the air duct 21.

[0267] Among them, the volute tongue 2148 is located on the side of the first air guide section 2147 close to the fan installation position 2146. 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 guide 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, 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.

[0268] It should be noted that the gas in the cleaning chamber 11 is immediately sucked into the second air guide section 2149 after being sucked into the first air guide section 2147 by the fan 22. When the gas in the cleaning chamber 11 goes from the first air guide section 2147 to the second air guide section 2149, the direction deflects, and the deflection angle is the same as the angle at which the first air guide section 2147 and the second air guide section 2149 are bent relative to each other. 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 overall working state, air volume and efficiency of the fan 22.

[0269] 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 one end close to the fan installation position 2146 to one end close to the second air guiding section 2149, which can reduce the influence of the backflow vortex generated by the deflection of the air flow direction when the air flow goes 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, the wind speed uniformity at the outlet of the fan 22 and the maximum static pressure of the fan 22 can be significantly improved, the overall air volume in the air duct 21 is increased, and the wind speed of the air flow reaching the surface of the heater 23 can be made uniform, thereby improving the hot air drying effect of the cleaning device.

[0270] 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.

[0271] Wherein, 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.

[0272] 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.

[0273] Wherein, 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.

[0274] 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°.

[0275] Wherein, the included angle θ between the straight section 21482 and the central axis of the first air guiding section 2147 can be 5°, 25°, 45° or 60°, and can be specifically set according to the actual working environment.

[0276] In some embodiments, the straight section 21482 is tangent to the arc section 21481, so as to smoothly introduce the air flow of the arc section 21481 into the straight section 21482.

[0277] In some embodiments, as Figure 23 shown, the radian of the arc section 21481 is δ, satisfying: 30° ≤ δ ≤ 90°.

[0278] 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.

[0279] By setting the radian δ of the arc segment 21481, the gas can enter the straight segment 21482 area better, while reducing the turbulence and eddy current of the air flow.

[0280] In some embodiments, such as Figure 23 As shown, the vertical distance d4 from the center of the fan installation position 2146 to the straight segment 21482 and the radius r of the fan installation position 2146 satisfy: d4 ≤ 3r.

[0281] Among them, the vertical distance d4 from the center of the fan installation position 2146 to the straight segment 21482 can be negative, that is, the extension line of the straight segment 21482 intersects with the fan installation position 2146; or, the extension line of the straight 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 segment 21482 is 0; or, the vertical distance d4 from the center of the fan installation position 2146 to the straight segment 21482 can be r, 1.5r or 3r, and can be specifically set according to the actual working environment.

[0282] In this embodiment, by setting the vertical distance from the center of the fan installation position 2146 to the straight segment 21482, the gas can enter the straight segment 21482 area better, while reducing the turbulence and eddy current of the air flow.

[0283] 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.

[0284] In some embodiments, such as Figure 23 As shown, the air duct 21 is open at the fan installation position 2146 to form the lower volute of the fan 22.

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

[0286] The blower 22 can retain only the upper shell 221, the impeller 222 and the motor assembly of the blower 22, and omit the original lower shell of the blower 22. In this way, the blower installation position 2146 and the upper shell 221 of the blower 22 together form the blower 22 part, reducing the overall size of the blower 22. A larger model of the blower 22 can be installed in the same space. Moreover, the blower installation position 2146 replaces the lower shell of the blower 22, and the impeller 222 is directly installed in the blower installation position 2146, increasing the air inlet area of the air inlet 211 and the air intake volume.

[0287] 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.

[0288] 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. An air inlet 211 is formed between the water blocking cover 24 and the flanging 201.

[0289] Among them, the first wall surface of the inner tank 1 of the cleaning device can be the top wall 12, the side wall 13 or the bottom wall 16 of the inner tank 1, which can be specifically set according to the installation scenario of the cleaning device. The installation hole can be a through hole, and the installation hole is used to install the air duct 21.

[0290] The air inlet end 20 of the air duct 21 has a flanging 201. 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.

[0291] 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 blower 22 and the cleaning chamber 11, and the water blocking cover 24 is located in the cleaning chamber 11.

[0292] An air inlet 211 is formed between the water blocking cover 24 and the flanging 201. The blower 22 draws 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 inlets 211 can be strip-shaped or surface-shaped, which can be specifically set according to the actual installation situation.

[0293] Among them, the installation structure 242 and the flanging 201 can be connected by connection means such as snap fasteners, knobs or screw connections. The water baffle 241 is connected to the flanging 201 at the air inlet end 20 of the air duct 21 through the installation structure 242. The water baffle 241 and the installation structure 242 can be connected by connection means such as integral molding, welding or screw connection.

[0294] When the installation structure 242 and the flanging 201 are connected by screw connection, meshing threads are provided on both the installation structure 242 and the flanging 201, and the installation structure 242 and the flanging 201 are connected by screw meshing.

[0295] When the installation structure 242 and the flanging 201 are connected by a knob, the installation structure 242 and the flanging 201 can be provided with structures that engage with each other. After the installation structure 242 and the flanging 201 are rotated by a certain angle, the installation structure 242 and the flanging 201 are snap-connected.

[0296] 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 device 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.

[0297] In some embodiments, as Figure 26 shown, there are multiple installation structures 242, and the multiple installation structures 242 are spaced apart circumferentially around the water baffle 241, and an air inlet 211 is formed between two adjacent installation structures 242.

[0298] Among them, the installation structure 242 can be provided with 2, 3 or more. The multiple installation structures 242 can be evenly distributed circumferentially around the water baffle 241, or can be arranged at different angles according to requirements. The number and distribution mode of the installation structures

[242] can be set according to the actual use scenario.

[0299] By adding multiple installation 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.

[0300] In some embodiments, the flanging 201 includes a plurality of circumferentially spaced-apart ones along the air inlet end 20. First, the plurality of flangings 201 can be connected to the plurality of installation structures 242, and then the plurality of flangings 201 and the plurality of installation structures 242 are rotated by a certain angle so that the plurality of flangings 201 and the plurality of installation structures 242 are connected in one-to-one correspondence.

[0301] In this embodiment, the number and installation positions of the flanges 201 match the installation structure 242. By providing a plurality of flanges 201 connected to the plurality of 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.

[0302] In some embodiments, as Figure 26 shown, the plurality of flanges 201 and the plurality of installation structures 242 are assembled or disassembled by a knob method, and the connection method is simple and convenient.

[0303] Among them, the plurality of flanges 201 are circumferentially spaced apart along the air inlet end 20, and the plurality of installation structures 242 are circumferentially spaced apart around the water baffle 241. Before connecting the water baffle 24 to the air inlet end 20 of the air duct 21, each of the plurality of installation structures 242 can be located between two adjacent flanges 201, and then the water baffle 24 is rotated by a certain angle relative to the air inlet end 20 of the air duct 21 so that the projection of the flange 201 on the air inlet end 20 in the axial direction of the air duct 21 has an overlapping part. At this time, the water baffle 24 is snap-connected to the air inlet end 20 of the air duct 21.

[0304] In some embodiments, the installation structure 242 includes a clamping groove 2421 that opens radially inward, and the flange 201 is embedded in the clamping groove 2421. By rotating the water baffle 24, the area of the flange 201 located in the clamping groove 2421 can be adjusted, facilitating assembly or disassembly.

[0305] 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 clamping groove 2421 through the notch; when there are multiple flanges 201, the multiple flanges 201 are circumferentially spaced apart 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 clamping grooves 2421.

[0306] In some embodiments, as Figure 26 shown, the installation structure 242 includes: a connecting member 2422 and a clamping joint 2423; the connecting member 2422 is connected to the water baffle 241; the clamping joint 2423 is connected to the connecting member 2422, and the clamping joint 2423 is provided with a clamping groove 2421.

[0307] Among them, the clamping joint 2423, the connecting member 2422, and the water baffle 241 can be connected by connection methods such as integral molding, welding, or gluing.

[0308] 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.

[0309] In some embodiments, asFigure 26 As shown, the clamping joint 2423 is located radially outside the water baffle 241, and the radial outer side wall of the clamping joint 2423 is arc-shaped.

[0310] Among them, such as Figure 27 As shown, the clamping joint 2423 is located radially outside the water baffle 241, that is, there is a certain distance between the outer side of the clamping joint 2423 and the radial outer side of the water baffle 241. When the clamping joint 2423 is connected to the flange 201, an air inlet 211 is formed between the water baffle 241 and the flange 201.

[0311] By setting the radial outer side wall of the card joint 2423 to be in an arc shape, the radial outer side wall of the card joint 2423 can be matched with the inner side wall 13 of the air inlet end 20 of the air duct 21.

[0312] In some embodiments, the connecting member 2422 has a hollow groove 24221 , and there may be one or more hollow grooves 24221 . The number and hollow area of the hollow grooves 24221 may be set according to the area of the connecting member 2422 .

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

[0314] In some embodiments, radially inner ends of the connectors 2422 of the plurality of mounting structures 242 are connected via an annular rib 2411 connected to the bottom surface of the water retaining plate 241 .

[0315] The bottom surface of the water baffle 241 is provided with an annular rib 2411. The annular rib 2411 can be arranged concentrically with the water baffle 241 or eccentrically with the water baffle 241. The annular rib 2411 can be connected to the bottom surface of the water baffle 241 by integral molding, welding, or gluing. The radial inner ends of the connectors 2422 of the multiple mounting structures 242 can be connected to the annular rib 2411 by integral molding, welding, or gluing.

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

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

[0318] Wherein, an installation space is formed between the installation boss 121 and the air inlet end 20 of the air duct 21. The sealing ring is located in the installation space, and the sealing between the installation boss 121 and the air duct 21 can be achieved by extruding the sealing ring.

[0319] Wherein, the sealing ring can be made of rubber, plastic or other elastic materials, which can increase the seal between the air inlet end 20 of the air duct 21 and the inner tank 1, reduce the leakage of water vapor in the cleaning chamber 11, and improve the safety and reliability of the cleaning device.

[0320] 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.

[0321] 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.

[0322] 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.

[0323] 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 for realizing the air circulation in the cleaning chamber 11.

[0324] The main cover body 243 can be connected with 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.

[0325] The whole machine has a structural member connected to the installation structure 242. When the main cover 243 and the whole machine are connected 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 and the whole machine are connected 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 screw fit to lock the main cover 243 and the whole machine together.

[0326] Among them, as Figure 30 shown, there are multiple groups of water blocking members 244, and the multiple groups of water blocking members 244 are arranged at intervals along the axial direction of the ventilation duct 2432. The number of groups of water blocking members 244 can be 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 groups of water blocking members 244 are spaced apart to achieve ventilation. The setting of the multiple groups of water blocking members 244 can enhance the water blocking effect.

[0327] Among them, multiple water blocking members 244 are arranged at intervals in a direction intersecting with the axial direction of the ventilation duct 2432. The number of water blocking members 244 can be 3, 4 or more. The number of water blocking members 244 in each group of water blocking members 244 can be the same or different. The number of water blocking members 244 in each group of water blocking members 244 can be determined according to the cross-sectional area of the ventilation duct 2432 in the plane where it is located.

[0328] As Figure 30 shown, the arrows in the figure indicate the air flow direction. The adjacent two water blocking members 244 are spaced apart to achieve ventilation. The projection of the multiple groups of water blocking 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 between the adjacent two groups of water blocking members 244 and the interval between the adjacent two water blocking members 244, effectively blocking the entry of water and ensuring the circulation of gas at the same time.

[0329] Among them, multiple water blocking members 244 can be arranged at intervals in a direction perpendicular to the axial direction of the cross-section of the ventilation duct 2432, and the lengths of the multiple water blocking 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 blocking members 244 are connected to the inner wall of the ventilation duct 2432; or, multiple water blocking members 244 can be arranged at intervals in a direction inclined at an acute angle to the axial direction of the ventilation duct 2432.

[0330] As Figure 29As shown, the sum of the projections of multiple groups of water baffle members 244 along the axial direction of the ventilation passage 2432 is equal to or greater than the projection of the inlet end of the ventilation passage 2432 along the axial direction, so as to achieve full coverage of the ventilation passage 2432 by multiple groups of water baffle members 244.

[0331] Among them, the water baffle member 244 can be structures such as a water baffle rib, a water baffle film, or a water baffle plate 241.

[0332] According to the water baffle cover 24 provided by the embodiment of the present application, by arranging multiple groups of water baffle members 244 spaced apart along the axial direction of the ventilation passage 2432, each group of water baffle members 244 includes multiple water baffle members 244 spaced apart along a direction intersecting the axial direction of the ventilation passage 2432, and the projection of the multiple groups of water baffle members 244 along the axial direction of the ventilation passage 2432 covers the projection of the inlet end of the ventilation passage 2432 along the axial direction, so that the air flow is sucked into the air duct 21 by the fan 22 in a zigzag shape along the intervals between adjacent two groups of water baffle members 244 and between adjacent two water baffle members 244. It can reduce the situation that the water flow directly enters the air duct 21 during the cleaning 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.

[0333] Among them, the multiple water baffle members 244 can be distributed in parallel in the plane where they are located, or can be distributed crosswise with each other.

[0334] In some embodiments, the water baffle members 244 in multiple groups of water baffle members 244 are spaced apart in parallel to make the flow velocity and air volume of the air flow uniform.

[0335] In some embodiments, the distance between adjacent two water baffle members 244 in multiple groups of water baffle members 244 is equal to further make the flow velocity and air volume of the air flow uniform.

[0336] In some embodiments, as Figure 30 shown, one side of the water baffle member 244 facing away from the inlet end of the ventilation passage 2432 has a guiding surface 2443, and the guiding surface 2443 is inclined towards the outside of the water baffle member 244 along the direction close to the inlet end of the ventilation passage 2432.

[0337] Among them, the guiding surface 2443 can be a plane or an arc surface.

[0338] By arranging the guiding surface 2443, the condensed water generated by the steam in the cleaning chamber 11 when encountering the fan 22 can flow back into the cleaning chamber 11 along the guiding surface 2443, reducing the residence time of the condensed water in the water baffle member 244 and increasing the drying effect inside the chamber.

[0339] 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.

[0340] Among them, the first plate 2441 and the second plate 2442 can be symmetrically arranged along their connection, or can be asymmetrically arranged, and can be specifically set according to the actual use scenario. In the case where the first plate 2441 and the second plate 2442 are asymmetrically arranged, the lengths and widths of the first plate 2441 and the second plate 2442 can be different.

[0341] Among them, one side of the first plate 2441 and the second plate 2442 facing away from the inlet end of the ventilation duct 2432 is connected, and one side of the first plate 2441 and the second plate 2442 close to the inlet end of the ventilation duct 2432 is spaced apart. The first plate 2441 and the second plate 2442 form a bracket-shaped interception structure, which can increase the resistance of water flow, reduce the entry of water flow, and at the same time will not generate a large resistance to the air flow.

[0342] 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 the electrical components such as the fan 22 and the heater 23 in the air duct 21.

[0343] In some embodiments, as Figure 30 shown, the main cover 243 includes: a tube body 2431 and a flange 2433; the tube body 2431 forms a ventilation duct 2432; the flange 2433 is connected to the outer periphery of the tube body 2431 and is arranged around the tube body 2431. An installation structure 242 is provided on one side of the tube body 2431 facing away from the inlet end of the ventilation duct 2432.

[0344] Among them, the tube 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.

[0345] The flange 2433 can be circular. The flange 2433 is arranged around the tube body 2431. The inner side of the flange 2433 is connected to the outer periphery of the tube body 2431, and the outer side of the flange 2433 extends in a direction away from the tube body 2431. The width of the flange 2433 is set according to the actual installation environment of the water baffle cover 24.

[0346] The flange 2433 can increase the overlapping area when the water retaining cover 24 is connected to the entire machine, thereby improving the sealing effect.

[0347] In some embodiments, as 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.

[0348] Among them, there can be 2, 3 or more mounting structures 242. Multiple mounting structures 242 can be evenly distributed around the circumference of the tube body 2431, or can be set at different angles as required. The number and distribution of the mounting structures 242 can be set according to the actual usage scenario.

[0349] By adding multiple mounting structures 242 , the main cover 243 can be connected to the entire device at multiple points, thereby improving the reliability of the connection.

[0350] Before connecting the mounting structure 242 to the entire machine, each mounting structure 242 among the multiple mounting structures 242 can be located between the corresponding notches of the entire machine and the mounting structure 242, and then the main cover body 243 can be rotated a certain angle relative to the air inlet end 20 of the entire machine so that the connecting piece 2422 of the entire machine and the axial projection of the mounting structure 242 in the air duct 2432 have overlapping parts. At this time, the mounting structure 242 and the entire machine are snap-fitted and connected.

[0351] In some embodiments, as 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 .

[0352] Among them, the water outlet 2434 connects the air duct 2432 and the air duct 21. The condensed water generated by the condensation of water vapor in the air flow encountering the flange 2433 or the tube body 2431 can flow from the water outlet 2434 into the air duct 2432 and then flow back into the cleaning chamber 11, reducing the time that the condensed water stays in the water barrier 244 and increasing the drying effect in the cavity.

[0353] In some embodiments, as 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.

[0354] 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.

[0355] The sealing installation position 24331 is used to install a sealing component, which may be a sealing strip, a sealing ring, a sealing gasket or other components.

[0356] The sealing installation position 24331 can be a groove, a protrusion or a flat structure. The seal is installed in the sealing installation position 24331. The seal between the flange 2433 and the entire machine can be achieved by squeezing the seal. The structure of the sealing installation position 24331 is determined according to the type of seal.

[0357] In some embodiments, as 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.

[0358] The two protrusions 24332 are spaced apart to form a groove, and at least a portion of the seal is clamped between the two protrusions 24332 .

[0359] By providing multiple pairs of protrusions 24332, which are spaced apart and distributed around the circumference of the tube body 2431, multi-point fixation of the seal can be achieved, which limits the position and deformation of the seal and improves the sealing performance.

[0360] In some embodiments, as 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 .

[0361] The reinforcing ribs 24333 can be connected to the flange 2433 and the outer wall of the tube body 2431 by integral molding, welding, gluing, etc. The reinforcing ribs 24333 can be straight, curved, or other specific shapes, depending on the desired reinforcement effect and structural form.

[0362] By providing the reinforcing ribs 24333 , the stress and pressure from the external environment can be effectively dispersed and withstood, deformation, cracking or loosening of the connection between the flange 2433 and the tube body 2431 can be prevented, and the connection strength and stability between the flange 2433 and the tube body 2431 can be improved.

[0363] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used 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 generally of the same type and do not limit the number of objects. For example, the first object can be one or more. In addition, "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.

[0364] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application.

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

[0366] In the description of this application, the meaning of "a plurality" is two or more.

[0367] 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.

[0368] 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.

[0369] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic 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 a suitable manner in any one or more embodiments or examples.

[0370] 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 assembly, 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, a make-up air inlet and an air outlet. The air inlet and the air outlet are both communicated with the cleaning chamber. The make-up air inlet is communicated with the outside. The air duct is provided with a valve, and the valve is configured to close the make-up air inlet under normal conditions and open under the action of pressure difference; A fan, installed in the air duct, and both the air inlet and the make-up air inlet are communicated with the inlet of the fan. The outlet of the fan is communicated with the air outlet; A heater, configured to heat the gas flowing through the air duct when turned on.

2. The cleaning device according to claim 1, wherein The cleaning device has a cleaning working mode. In the cleaning working mode, the fan, the heater and the exhaust assembly are stopped, and the valve is closed; And / or, the cleaning device has an internal circulation drying working mode. In the internal circulation drying working mode, the fan and the heater work, the exhaust assembly is stopped, the valve is opened, and the air flow rate inhaled by the make-up air inlet ≤ 0.1 * the air flow rate inhaled by the air inlet; And / or, the cleaning device has a mixed working mode; in the mixed working mode, the fan, the heater and the exhaust assembly all work, the valve is opened, and the air flow rate inhaled by the air inlet is less than the air flow rate inhaled by the make-up air inlet.

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

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

5. The cleaning device according to claim 1, characterized in that, The fan is installed above the top wall of the inner container. The air duct includes: a main air duct and a make-up air branch. The make-up air branch is located between the main air duct and the top wall of the inner container. The valve is installed on the wall surface between the make-up air branch and the main air duct.

6. The cleaning device according to claim 5, wherein, The air inlet is located in the area of the top wall of the inner container close to the back plate, and the make-up air inlet is arranged forward.

7. The cleaning device according to claim 5, characterized in that, The valve includes a damper pivotally installed on the wall surface between the make-up air branch and the main air duct. The first part of the damper is located in the make-up air branch, and the second part of the damper is located in the main air duct. The damper is configured to block the make-up air branch under the action of gravity and open when the fan is turned on.

8. The cleaning device according to claim 7, wherein, The wall surface between the make-up air branch and the main air duct has a groove recessed towards the make-up air branch. The damper is pivotally installed on the side wall of the groove close to the fan so that when the valve is opened, the first part is located behind the side wall of the groove close to the fan, and the second part is located in the groove.

9. The cleaning device according to claim 7, characterized in that, The first part is provided with a first boss, and the first boss is used to abut against the wall surface of the air supply branch when the valve is closed; the second part is provided with a second boss, and the second boss is used to abut against the wall surface of the main air duct when the valve is opened.

10. The cleaning device according to claim 7, characterized in that, The lower wall surface of the air supply branch is provided with a rib protruding upward, and the first part abuts against the rib when the valve is closed.

11. The cleaning device according to any one of claims 1-10, characterized in that, When the exhaust component and the fan are working, the exhaust volume of the exhaust component is not less than the air supply volume of the air supply inlet.

12. The cleaning device according to any one of claims 1-10, characterized in that, It further includes: A side plate, the heater is installed in the area of the air duct on the side of the inner tank, the side plate is installed on the side wall of the inner tank and covers at least part of the outside of the air duct, and the inner side surface of the side plate is spaced apart from the air duct and the heater.

13. The cleaning device according to any one of claims 1-10, characterized in that, The power of the heater is P, and it satisfies: P ≤ 500W.

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