CN221750341U - Air duct components and cleaning equipment - Google Patents

Abstract

The application discloses an air duct assembly and cleaning equipment, and belongs to the field of cleaning equipment. The wind channel subassembly includes: the device comprises an upper air channel, a driving mechanism, a transmission mechanism and a valve; the upper air duct is provided with an air supplementing inlet and an air inlet; the driving mechanism is arranged on the upper air duct; the input end of the transmission mechanism is in power coupling connection with the output end of the driving mechanism; the valve is in power coupling connection with the output end of the transmission mechanism, and the valve is used for selectively closing the air supplementing inlet and the air inlet. The application improves the utilization rate of hot air heat energy, reduces the energy consumption of the hot air drying working mode of the cleaning equipment, and can realize various working modes such as internal circulation, external circulation, internal and external circulation mixing and the like of the cleaning equipment.

Description

Air duct components and cleaning equipment

Technical Field

The present application belongs to the technical field of household appliances, and in particular, relates to an air duct assembly and a cleaning device.

Background Art

The drying methods of dishwashers and other cleaning equipment include: condensation drying, hot air drying, adsorption drying and door-opening quick drying. 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 after long-term storage, and door-opening quick drying has problems such as insects easily entering and failure to automatically close the door in time in humid areas. Therefore, considering the comprehensive cost and drying effect, hot air drying has become the method chosen by most manufacturers.

At present, most cleaning equipment such as dishwashers rely on an external circulation system for hot air drying. The working process is: outside air is sucked in and heated by a heater, and the heated outside air is introduced into the cleaning chamber to perform hot air drying on the items in the cleaning chamber. During the hot air drying process, outside air is sucked into the cleaning chamber to form a positive pressure in the cleaning chamber. In order to maintain the normal pressure of the cleaning chamber, the exhaust component of the cleaning equipment is usually turned on to reduce the water vapor leakage problem caused by the positive pressure of the cleaning chamber.

In the above-mentioned external circulation drying mode, the opening of the exhaust component will cause the heat energy of the heated air to be discharged from the cleaning chamber without being fully utilized, resulting in energy waste. In the related art, a cleaning device that adopts an internal circulation drying mode for drying has appeared, which realizes the internal circulation of the cleaning chamber gas by adding an internal circulation air duct, but the air circulation mode that can be realized by the internal circulation air duct is single, and there are still problems such as low drying efficiency, poor drying effect and poor reliability, which need to be improved.

Utility Model Content

The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a cleaning device, which improves the utilization rate of hot air heat energy compared to a cleaning device that performs hot air drying through external circulation, and can realize multiple working modes of the cleaning device, such as internal circulation, external circulation, and internal and external circulation mixed.

In a first aspect, the present application provides an air duct assembly, comprising:

An upper air duct, wherein the upper air duct is provided with an air supply inlet and an air inlet;

A driving mechanism, the driving mechanism being installed in the upper air duct;

A transmission mechanism, wherein an input end of the transmission mechanism is dynamically coupled to an output end of the drive mechanism;

A valve is connected to the output end of the transmission mechanism by power coupling, and the valve is used to selectively close the air supply inlet and the air inlet.

According to the air duct assembly provided in the embodiment of the present application, an active valve is provided, and the valve can selectively close the air supply inlet and the air inlet under the drive of the driving mechanism, so that multiple working modes such as internal circulation, external circulation and internal and external circulation mixed can be realized for the cleaning equipment: when the air supply inlet is closed, the cleaning chamber is disconnected from the outside world, and the cleaning chamber is in the internal circulation working mode. Compared with the cleaning equipment that performs hot air drying through external circulation, the internal circulation drying working mode improves the utilization rate of hot air thermal energy, reduces the energy consumption of the hot air drying working mode of the cleaning equipment, and realizes energy saving; at the same time, during the cleaning stage, the blocking of the air supply inlet by the valve can reduce the leakage of water vapor in the cleaning chamber through the air duct to the outside, thereby reducing the condensed water between the inner tank and the outer shell of the cleaning equipment, and reducing corrosion pollution; when the air inlet is closed, the air supply inlet is connected to the outside world, and the cleaning chamber is in the external circulation working mode. At this time, the air supply inlet introduces outside air into the cleaning chamber to provide sufficient air supplement for the cleaning chamber, which helps the exhaust component to quickly discharge the evaporated water vapor, achieve the effect of rapid moisture removal, and help fast drying.

According to one embodiment of the present application, the transmission mechanism includes:

A slider, the slider is slidably mounted on the upper air duct, and the output end of the driving mechanism is dynamically coupled to the slider;

A bracket is pivotally mounted on the slider and connected to the valve.

According to one embodiment of the present application, the valve is pivotally mounted on the upper air duct, the bracket is pivotally connected to the valve, and the rotation axis between the bracket and the valve is parallel and spaced apart from the rotation axis between the valve and the upper air duct.

According to one embodiment of the present application, the valve comprises:

A damper, the damper can selectively close the air supply inlet and the air inlet;

a valve shaft, the valve shaft being connected to the damper and being pivotally mounted on the upper air duct;

A pull rod is connected to the damper, and the bracket is pivotally connected to the pull rod.

According to an embodiment of the present application, the bracket has a supporting claw with one end open, and the pull rod is supported by the supporting claw.

According to an embodiment of the present application, a side of the bracket facing the upper air duct is provided with an escape opening.

According to an embodiment of the present application, a slide groove is provided on the upper surface of the upper air duct, and the sliding block is slidably installed in the slide groove.

According to one embodiment of the present application, the slider includes:

A base, the base being slidably mounted on the upper air duct;

A support plate is connected to the base, and an output end of the driving mechanism is connected to the support plate, and the bracket is pivotally mounted on the support plate.

According to one embodiment of the present application, the support plates are a pair, surfaces of the two support plates facing away from each other are provided with a pivot structure, the bracket is rotatably connected to the pivot structure, surfaces of the two support plates facing each other are provided with a connecting structure, and the output end of the driving mechanism is connected to the connecting structure.

According to one embodiment of the present application, the driving mechanism includes a wax motor.

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

The liner forms a cleaning chamber;

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

An air duct assembly as described in any one of the above, wherein the upper air duct is installed on the inner tank, the air inlet is connected to the cleaning chamber, and the air supply inlet is connected to the outside;

A lower air duct, the lower air duct is communicated with the upper air duct and has an air outlet, and the air outlet is communicated with the cleaning chamber;

A fan is installed in the upper air duct, and the air inlet and the air supply inlet are both connected to the inlet of the fan, and the outlet of the fan is connected to the air outlet;

A heater is configured to heat the gas flowing through the downwind duct when the heater is turned on.

Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

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

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

FIG2 is a second schematic diagram of the structure of the cleaning device provided in an embodiment of the present application;

FIG3 is one of the structural schematic diagrams of the internal circulation component provided in an embodiment of the present application;

FIG4 is a second schematic diagram of the structure of the internal circulation component provided in an embodiment of the present application;

FIG5 is a schematic diagram of a partial structure of an internal circulation component provided in an embodiment of the present application;

FIG6 is one of the structural schematic diagrams of the valve provided in the embodiment of the present application;

FIG7 is a second schematic diagram of the structure of the valve provided in an embodiment of the present application;

FIG8 is one of the partial structural schematic diagrams of the valve provided in the embodiment of the present application;

FIG9 is a second schematic diagram of a partial structure of a valve provided in an embodiment of the present application;

FIG10 is a third structural schematic diagram of an internal circulation component provided in an embodiment of the present application;

Fig. 11 is a cross-sectional view of the section N-N in Fig. 10;

Fig. 12 is a second cross-sectional view of the position N-N in Fig. 10;

FIG13 is a third schematic diagram of the structure of the cleaning device provided in an embodiment of the present application;

FIG14 is a fourth schematic diagram of the structure of the cleaning device provided in an embodiment of the present application;

FIG15 is a partial enlarged view of point B in FIG14;

FIG16 is a fifth structural schematic diagram of a cleaning device provided in an embodiment of the present application;

FIG. 17 is a sixth schematic diagram of the structure of the cleaning device provided in an embodiment of the present application.

Reference numerals:

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

Internal circulation component 2, air duct 21, air inlet 211, air outlet 212, air supply branch 213, air supply inlet 2131, second support surface 21311;

Upper air duct 214, first support surface 2144, slide groove 2145; lower air duct 215, grille 2156;

Fan 22, upper shell 221, impeller 222; heater 23, water retaining cover 24, sealing device 25; valve 26, damper 261, valve shaft 262, pull rod 263; drive mechanism 27; transmission mechanism 28, slider 281, base 2811, support plate 2812; bracket 282, supporting claw 2821, avoidance opening 2822;

Side panel 3, exhaust assembly 4, air inlet 41, bowl basket 5.

DETAILED DESCRIPTION

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

The following describes the air duct assembly and cleaning equipment according to the embodiments of the present application with reference to Figures 1 to 17. The air duct assembly of the present application is applied to the cleaning equipment, and the air duct assembly is used for the circulation of air of the cleaning equipment. The cleaning equipment can wash and dry various items such as tableware or clothes.

The cleaning device may be a device with hot air drying function such as a dishwasher, a clothes dryer or a shoe washer. In the embodiment 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 starts the hot air drying process after the cleaning is completed. Drying the items in the cleaning chamber can reduce the growth of bacteria. For the sake of convenience, this application takes a dishwasher as an example for elaboration.

As shown in FIG. 1 , FIG. 3 and FIG. 4 , an embodiment of the present application provides a cleaning device, which includes: an inner tank 1, an exhaust component 4, an air duct component, a downwind duct 21215, a fan 22 and a heater 23.

The inner liner 1 forms a clean chamber 11; the exhaust assembly 4 is installed on the inner liner 1, and is configured to discharge the gas in the clean chamber 11 when it is turned on; the air duct assembly includes an upper air duct 214, the upper air duct 214 is provided with a make-up air inlet 2131 and an air inlet 211, the upper air duct 214 is installed on the inner liner 1, the air inlet 211 is connected to the clean chamber 11, and the make-up air inlet 2131 is connected to the outside; the lower air duct 21215 is connected to the upper air duct 214, and the lower air duct 21215 has an air outlet 212, and the air outlet 212 is connected to the clean chamber 11; the fan 22 is installed on the upper air duct 214, and the air inlet 211 and the make-up air inlet 2131 are both connected to the inlet of the fan 22, and the outlet of the fan 22 is connected to the air outlet 212; the heater 23 is configured to heat the gas flowing through the lower air duct 21215 when it is turned on.

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

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

The cleaning chamber 11 is used for placing objects to be cleaned. The objects to be cleaned can be cleaned and dried in the cleaning chamber 11. The objects to be cleaned can be tableware such as bowls, chopsticks, plates and pots.

As shown in FIG. 1 , there may be an item rack in the cleaning chamber 11 , and the item rack may include a bowl basket 5 , a chopstick rack, a cup rack and other supports. The item rack may fix and support tableware, and may also divide the space of the cleaning chamber 11 to increase the space utilization of the cleaning chamber 11 .

The cleaning chamber 11 may also be provided with a spray arm, which is used to spray high-pressure water flow, and the high-pressure water flow can spray and flush the tableware in the cleaning chamber 11 to wash away the dirt attached to the tableware, thereby achieving the washing of the tableware. There may be multiple spray arms, and the multiple spray arms may be installed at different positions of the cleaning chamber 11 to spray the tableware in multiple directions, angles, and levels, thereby improving the cleaning effect of the tableware.

As shown in FIG. 1 , the air duct assembly has an air inlet 211 communicating with the cleaning chamber 11 and a supplementary air inlet 2131 communicating with the outside, and the lower air duct 21215 has an air outlet 212 communicating with the cleaning chamber 11 .

The gas in the cleaning chamber 11 is sucked into the upper air duct 214 from the air inlet 211 of the upper air duct 214 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 lower air duct 21215, forming an internal circulation. The hot air can dry the tableware and other items in the cleaning chamber 11.

The external gas is drawn into the upper air duct 214 from the air supply inlet 2131 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 form an external circulation to balance the air pressure in the cleaning chamber 11 and reduce the vacuum degree in the cleaning chamber 11.

By providing the air inlet 211, the air supply inlet 2131 and the air outlet 212, external circulation and/or internal circulation of the cleaning chamber 11 can be realized to realize various working modes of the cleaning device.

By setting up an air supply inlet 2131 connected to the outside, the present application can maintain the air pressure balance in the cleaning chamber 11 through the air supply inlet 2131 when the exhaust component 4 is working, reduce the vacuum degree in the cleaning chamber 11, thereby maintaining a high exhaust rate, quickly exhausting water vapor in the cleaning chamber 11, improving the overall dehumidification rate and drying rate of the cleaning equipment, and further reducing the energy consumption of hot air drying.

In this embodiment, the air inlet 211, the air supply inlet 2131 and the air outlet 212 can be located on the same wall of the inner liner 1, or on different walls of the inner liner 1, and are set according to the specific usage scenario. The number and ventilation area of the air inlet 211, the air supply inlet 2131 and the air outlet 212 can be set according to the specific usage scenario.

The inlet of the fan 22 is connected to the air inlet 211, and the outlet of the fan 22 is connected to the air outlet 212. The fan 22 drives the gas to flow from the air inlet 211 to the air outlet 212, that is, the gas in the cleaning chamber 11 is drawn into the upper air duct 214 and the lower air duct 21215 by the fan 22, and after being heated by the heater 23, it is driven by the fan 22 to be discharged from the lower air duct 21215 into the cleaning chamber 11, forming an internal circulation.

The fan 22 is installed in the upper air duct 214, and the fan 22 can be connected to the upper air duct 214 by means of snap connection, thread connection or plug-in connection. The fan 22 can be a centrifugal air supply device, an exhaust fan or a ventilation air supply device, etc., which can drive the flow of gas.

The fan 22 is connected to the air inlet 211 and the air supply inlet 2131, so that when the fan 22 is turned on, the gas in the cleaning chamber 11 and/or the external gas is drawn into the upper air duct 214, and when the fan 22 is driven, the gas is discharged from the outlet of the fan 22 into the air outlet 212 and then discharged into the cleaning chamber 11.

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

The heater 23 can heat the gas flowing through the downwind duct 21215 by electromagnetic heating, infrared heating or resistance heating. The heater 23 using resistance heating can be a PTC (Positive Temperature Coefficient) heating device, a resistance wire heating device or a resistance coil heating device.

When turned on, the heater 23 heats the gas flowing through the downwind duct 21215. The heater 23 can be installed in the downwind duct 21215 to perform direct contact heat exchange with the gas flowing through the downwind duct 21215. The heater 23 can also be installed outside the downwind duct 21215 to indirectly perform heat exchange with the gas flowing through the downwind duct 21215 by heating the pipe wall of the downwind duct 21215.

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

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 exhaust function such as an exhaust fan 22 or an air pump. When the cleaning chamber 11 is hot-air dried, 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 to reduce the relative humidity of the air in the cleaning chamber 11, which is conducive to the evaporation of more residual water.

Among them, the air outlet 212 is used to discharge the gas heated by the heater 23 into the cleaning chamber 11, and the air inlet 41 of the exhaust component 4 is connected to the cleaning chamber 11. The air inlet 41 of the exhaust component 4 is used to discharge the water vapor that has evaporated or volatilized in the cleaning chamber 11 together with the gas.

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

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

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

When only the exhaust assembly 4 is working, due to the lack of external air supply, the cleaning chamber 11 is evacuated into a negative pressure state by the exhaust assembly 4, and the negative pressure environment is also helpful to improve the drying rate.

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

As shown in FIG. 3 , FIG. 4 and FIG. 5 , the air duct assembly of the embodiment of the present application includes: an upper air duct 214 , a driving mechanism 27 , a transmission mechanism 28 and a valve 26 .

The upper air duct 214 is provided with a make-up air inlet 2131 and an air inlet 211; the driving mechanism 27 is installed in the upper air duct 214; the input end of the transmission mechanism 28 is dynamically coupled to the output end of the driving mechanism 27; the valve 26 is dynamically coupled to the output end of the transmission mechanism 28, and the valve 26 is used to selectively close the make-up air inlet 2131 and the air inlet 211.

The air inlet 211 is connected to the cleaning chamber 11, and the air supply inlet 2131 is connected to the outside.

The upper air duct 214 can be installed on the inner tank 1. The upper air duct 214 can be installed on the top wall 12, the side wall 13 or the bottom wall 16 of the inner tank 1, and can be specifically set according to the installation situation of the cleaning equipment.

As shown in FIG. 6 , the driving mechanism 27 is coupled to the valve 26 via the transmission mechanism 28 . The driving mechanism 27 has various types, and a suitable driving mechanism 27 can be selected according to actual conditions.

For example, the driving mechanism 27 can be a driving device such as a wax motor or a stepper motor, which can be connected to the transmission mechanism 28 through a motor shaft, and the transmission mechanism 28 can be driven to move by the rotation of the motor; or, the driving mechanism 27 can be pneumatically driven: the pneumatic driving mechanism 27 uses the thrust or suction generated by the air pressure difference to move the transmission mechanism 28; or, the driving mechanism 27 can be hydraulically driven, generating a driving force through hydraulic components such as hydraulic cylinders and hydraulic motors to move the transmission mechanism 28.

In some embodiments, as shown in FIG. 6 , the driving mechanism 27 may be a driving device such as a wax motor or a stepping motor.

The transmission mechanism 28 is used to transmit the power of the driving mechanism 27 to move the valve 26 to close the air supply inlet 2131 or the air inlet 211.

The transmission mechanism 28 may be a connecting rod mechanism, a crank slider mechanism or a clutch or other components to extend the distance between the driving mechanism 27 and the valve 26, and is suitable for a variety of application scenarios.

The valve 26 is used to close the air supply inlet 2131 or the air inlet 211 under the drive of the driving mechanism 27.

When the valve 26 closes the air supply inlet 2131, the cleaning equipment is in internal circulation, and the fan 22 and the heater 23 can circulate and heat the gas in the dishwasher cavity to achieve rapid and uniform temperature increase, and can also reduce the leakage of water vapor during the cleaning process; when the valve 26 closes the air inlet 211, the cleaning equipment is in external circulation. At this time, the air supply inlet 2131 introduces outside air into the cleaning chamber 11, providing sufficient air supplement for the cleaning chamber 11, which helps the exhaust component to quickly discharge the evaporated water vapor, achieve the effect of rapid moisture removal, and help quick drying.

According to the air duct assembly provided in the embodiment of the present application, an active valve 26 is provided, and the valve 26 can selectively close the air supply inlet 2131 and the air inlet 211 under the drive of the driving mechanism 27, so that various working modes such as internal circulation, external circulation and internal and external circulation mixed can be realized for the cleaning equipment: when the air supply inlet 2131 is closed, the cleaning chamber 11 is disconnected from the outside world, and the cleaning chamber 11 is in the internal circulation working mode. Compared with the cleaning equipment that performs hot air drying through external circulation, the internal circulation drying working mode improves the utilization rate of the hot air thermal energy, reduces the energy consumption of the hot air drying working mode of the cleaning equipment, and realizes energy saving. ; At the same time, during the cleaning stage, the sealing of the make-up air inlet 2131 by the valve 26 can reduce the leakage of water vapor in the cleaning chamber 11 through the air duct 21, thereby reducing the condensation water between the inner tank 1 and the outer shell of the cleaning equipment, and reducing corrosion pollution; when the air inlet 211 is closed, the make-up air inlet 2131 is connected to the outside, and the cleaning chamber 11 is in the external circulation working mode. At this time, the make-up air inlet 2131 introduces outside air into the cleaning chamber 11, providing sufficient air supplement for the cleaning chamber 11, which helps the exhaust component to quickly discharge the evaporated water vapor, achieve the effect of rapid moisture removal, and help quick drying.

In some embodiments, as shown in Figures 1 and 4, the air duct includes an air supply branch 213, the air supply inlet 2131 of the air supply branch 213 is connected to the outside, and the air supply outlet of the air supply branch 213 is connected to the cleaning chamber. When the exhaust component and the fan are working, the exhaust volume of the exhaust component is not less than the air supply volume of the air supply branch.

Among them, the air duct includes two branches of internal circulation and external circulation. The air inlet 2131 of the air supply branch 213 is connected with the outside, and the air outlet of the air supply branch is connected with the cleaning chamber. The setting of the air supply branch 213 forms an external circulation branch of the cleaning chamber; the branch with an air inlet and an air outlet connected with the cleaning chamber belongs to the internal circulation branch.

By providing the air supply branch 213, external circulation and/or internal circulation of the cleaning chamber can be realized, so as to realize various working modes of the cleaning equipment.

In some embodiments, as shown in FIG. 7 , the transmission mechanism 28 includes: a slider 281 and a bracket 282 , the slider 281 is slidably mounted on the upper air duct 214 , and the output end of the driving mechanism 27 is dynamically coupled to the slider 281 ; the bracket 282 is pivotally mounted on the slider 281 and is connected to the valve 26 .

Among them, the driving mechanism 27 can be fixedly installed on the upper air duct 214, and the output end of the driving mechanism 27 can perform telescopic movement to drive the slider 281 to slide along the upper air duct 214. The driving mechanism 27 can be a stepping motor or a wax motor and other components. The output end of the driving mechanism 27 can be dynamically coupled to the slider 281 by means of socket connection, snap connection or threaded connection.

One end of the bracket 282 is fixedly connected to the slider 281, and the other end of the bracket 282 is pivotally connected to the slider 281. The bracket 282 can rotate relative to the slider 281 under the drive of the driving mechanism 27, thereby adjusting the position of the valve 26 so that the valve 26 can move between the position of the supply air inlet 2131 or the air inlet 211, so that the supply air inlet 2131 and the air inlet 211 can be selectively closed.

The bracket 282 can be connected to the valve 26 by pivoting, clamping or threaded connection.

5 , the valve 26 is pivotally mounted on the upper air duct 214 , the bracket 282 is pivotally connected to the valve 26 , and the rotation axis between the bracket 282 and the valve 26 is parallel and spaced apart from the rotation axis between the valve 26 and the upper air duct 214 .

Among them, the slider 281, the bracket 282 and the valve 26 form a crank slider 281 mechanism, and the driving mechanism 27 drives the valve 26 to rotate by driving the slider 281 to translate in the upper air duct 214, so that the valve 26 rotates between the positions of the supply air inlet 2131 or the air inlet 211, so that the supply air inlet 2131 and the air inlet 211 can be selectively closed.

In some embodiments, as shown in FIG. 7 , the valve 26 includes: a damper 261 , a valve shaft 262 and a pull rod 263 .

The damper 261 can selectively close the air supply inlet 2131 and the air inlet 211; the valve shaft 262 is connected to the damper 261 and is pivotally mounted on the upper air duct 214; the pull rod 263 is connected to the damper 261, and the bracket 282 is pivotally connected to the pull rod 263.

The damper 261 may be a baffle with an adjustable opening angle, and the air flow rate is controlled by adjusting the opening angle of the baffle. By setting the damper 261, the air supply inlet 2131 or the air inlet 211 may be closed.

The area of the damper 261 is not less than the ventilation area of the air supply inlet 2131 and the air inlet 211 .

The valve shaft 262 serves as a pivot shaft, and the damper 261 is pivotally connected to the upper air duct 214 via the valve shaft 262 .

Both ends of the valve shaft 262 may be pivotally connected to the upper air duct 214 , and/or a portion of the valve shaft 262 between the two ends may be pivotally connected to the upper air duct 214 , which may be specifically set according to the installation scenario of the air duct assembly.

The pull rod 263 is used to connect the damper 261 and the bracket 282 , and the driving force of the driving mechanism 27 is transmitted to the damper 261 along the slider 281 , the bracket 282 , the pull rod 263 and the valve shaft 262 in sequence.

In some embodiments, as shown in FIG. 8 , the bracket 282 has a supporting claw 2821 with one end open, and the pull rod 263 is supported by the supporting claw 2821 .

Among them, one end of the supporting claw 2821 is open and the other directions are closed. The pull rod 263 can be put into the supporting claw 2821 from the open end of the supporting claw 2821, which is convenient for the assembly between the pull rod 263 and the supporting claw 2821.

The width of the open end of the supporting claw 2821 matches the outer diameter of the pull rod 263 to improve the reliability of the connection between the pull rod 263 and the supporting claw 2821 .

In some embodiments, as shown in FIG. 8 , a side of the bracket 282 facing the upper air duct 214 is provided with an escape opening 2822 , and the escape opening 2822 is used to escape the damper 261 to reduce the influence on the rotation of the damper 261 and increase the rotation angle of the damper 261 .

In some embodiments, as shown in the figure, a slide groove 2145 is provided on the upper surface of the upper air duct 214, and the slider 281 is slidably installed in the slide groove 2145. The slide groove 2145 is used to limit the sliding path of the slider 281. The length of the slide groove 2145 is set according to the rotation angle of the damper 261, and the rotation angle of the damper 261 is determined according to the positions of the air supply inlet 2131 and the air inlet 211.

In some embodiments, as shown in FIG. 9 , the slider 281 includes a base 2811 and a support plate 2812 .

The base 2811 is slidably mounted on the upper air duct 214 ; the support plate 2812 is connected to the base 2811 , and the output end of the driving mechanism 27 is connected to the support plate 2812 , and the bracket 282 is pivotally mounted on the support plate 2812 .

The base 2811 and the support plate 2812 may be integrally formed or connected by welding or other connection methods.

The base 2811 is adapted to the slide groove 2145 , and the base 2811 can be in surface contact with the slide groove 2145 to improve the sliding stability of the slider 281 .

In this embodiment, the base 2811 is used to be slidably connected to the upper air duct 214, and the support plate 2812 is used to be connected to the output end of the driving mechanism 27 and the bracket 282. By separately arranging the base 2811 and the support plate 2812, the smoothness of the sliding of the slider 281 can be improved, and the reliability of the connection can be improved.

In some embodiments, as shown in Figure 9, the support plates 2812 are a pair, the surfaces of the two support plates 2812 facing away from each other are provided with a pivot structure, the bracket 282 is rotatably connected to the pivot structure, the surfaces of the two support plates 2812 facing each other are provided with a connecting structure, and the output end of the driving mechanism 27 is connected to the connecting structure.

The output end of the driving mechanism 27 is basically connected to the symmetry axis of the slider 281 , and the bracket 282 is pivotally connected to the two support plates 2812 .

In this embodiment, by setting two support plates 2812, the bracket 282 is rotatably connected to the pivot structures on the two support plates 2812, and the connection method of multiple connections can improve the smoothness of the pivotal movement; the output end of the driving mechanism 27 is connected to the connecting structure located in the middle, which can improve the reliability of the connection and improve the stability of the telescopic movement.

In some embodiments, as shown in FIG. 11 and FIG. 12 , the projection of the supplementary air inlet 2131 on the top wall 12 of the inner liner 1 is located between the projection of the fan 22 on the top wall 12 of the inner liner 1 and the projection of the air inlet 211 on the top wall 12 of the inner liner 1 .

Among them, the projection of the fan 22 on the top wall 12 of the inner tank 1 is separated from the projection of the air inlet 211 on the top wall 12 of the inner tank 1, that is, the fan 22 is staggered with the air inlet 211, which reduces the direct spraying and splashing of the fan 22 by the water flowing in from the air inlet 211 and improves reliability.

Among them, the projection of the supply air inlet 2131 on the top wall 12 of the inner liner 1 is adjacent to the projection of the air inlet 211 on the top wall 12 of the inner liner 1, that is, the supply air inlet 2131 is adjacent to the air inlet 211, which is convenient for the valve 26 to close the supply air inlet 2131 in the first position of the damper 261, and to close the air inlet 211 in the second position of the damper 261.

The air supply inlet 2131 and the air inlet 211 are located on a rotation path of the damper 261 of the valve 26 rotating around the pivot axis.

In some embodiments, drive mechanism 27 comprises a wax motor.

In actual use, as shown in the figure, when the input end of the control rod of the wax motor is retracted, the damper 261 closes the upper air inlet 2131, and the cleaning device is in a completely internal circulation state. The air in the cleaning chamber 11 is sucked into the upper air duct 214 along the arrow direction in the figure and circulated and heated, and returns to the cleaning chamber 11 through the lower air duct 21215 and the air outlet 212. This state is suitable for the time period when the cleaning chamber 11 urgently needs to be quickly heated and evaporated during the drying and storage process. During this time period, the exhaust component 4 does not work, which is conducive to the deep evaporation of the entire cavity and reduces the drying dead corner.

When the input end of the control rod of the wax motor is pushed out, as shown in the figure, the input end drives the base 2811 of the slider 281 to slide forward. At this time, the bracket 282 drives the damper 261 to rotate along the rotating axis, and the damper 261 closes the air inlet 211. At this time, the air supply inlet 2131 located on the upper side of the upper air duct 214 is opened to realize complete external circulation. The air supply inlet 2131 introduces outside air and enters the cleaning chamber 11 through the lower air duct 21215, providing sufficient air supplement for the cleaning chamber 11, which helps the exhaust component 4 to quickly discharge the evaporated water vapor, achieve the effect of rapid moisture removal, and help quick drying.

As shown in FIG. 1 , the present application also provides a cleaning device, including: an inner tank 1, an exhaust assembly 4, an air duct assembly, a downwind duct 21215, a fan 22 and a heater 23.

The inner liner 1 forms a clean chamber 11; the exhaust assembly 4 is installed on the inner liner 1, and is configured to discharge the gas in the clean chamber 11 when it is turned on; as any of the above-mentioned air duct assemblies, the upper air duct 214 is installed on the inner liner 1, the air inlet 211 is connected to the clean chamber 11, and the make-up air inlet 2131 is connected to the outside; the lower air duct 21215 is connected to the upper air duct 214, and has an air outlet 212, and the air outlet 212 is connected to the clean chamber 11; the fan 22 is installed on the upper air duct 214, and the air inlet 211 and the make-up air inlet 2131 are both connected to the inlet of the fan 22, and the outlet of the fan 22 is connected to the air outlet 212; the heater 23 is configured to heat the gas flowing through the lower air duct 21215 when it is turned on.

According to the cleaning equipment provided in the embodiment of the present application, by setting an active valve 26, the valve 26 can selectively close the air supply inlet 2131 and the air inlet 211 under the drive of the driving mechanism 27, so that various working modes of the cleaning equipment such as internal circulation, external circulation and internal and external circulation mixed can be realized: when the air supply inlet 2131 is closed, the cleaning chamber 11 is disconnected from the outside world, and the cleaning chamber 11 is in the internal circulation working mode. Compared with the cleaning equipment that performs hot air drying through external circulation, the internal circulation drying working mode improves the utilization rate of hot air thermal energy, reduces the energy consumption of the hot air drying working mode of the cleaning equipment, and achieves energy saving. ; At the same time, during the cleaning stage, the sealing of the make-up air inlet 2131 by the valve 26 can reduce the leakage of water vapor in the cleaning chamber 11 through the air duct 21, thereby reducing the condensation water between the inner tank 1 and the outer shell of the cleaning equipment, and reducing corrosion pollution; when the air inlet 211 is closed, the make-up air inlet 2131 is connected to the outside, and the cleaning chamber 11 is in the external circulation working mode. At this time, the make-up air inlet 2131 introduces outside air into the cleaning chamber 11, providing sufficient air supplement for the cleaning chamber 11, which helps the exhaust component to quickly discharge the evaporated water vapor, achieve the effect of rapid moisture removal, and help quick drying.

In some embodiments, as shown in FIG. 13 , the cleaning chamber 11 has a first side surface 111 and a second side surface 112 that are arranged opposite to each other, the air outlet 212 of the air duct 21 is located on the second side surface 112 , and the distance from the center of the air inlet 211 of the air duct 21 to the second side surface 112 is smaller than the distance from the center of the air inlet 211 to the first side surface 111 .

In this embodiment, the exhaust component 4 can be installed on the first side 111, and the exhaust component 4 and the air outlet 212 are respectively located on the first side 111 and the second side 112 which are relatively arranged, and the air inlet 211 is located close to the second side 112 where the air outlet 212 is located, that is, the air inlet 211 is far away from the exhaust component 4.

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

In some embodiments, as shown in FIG. 14 , the air inlet 211 is located on the top wall 12 of the cleaning chamber 11 and close to the back panel 14 , that is, the center of the air inlet 211 is located in the rear half of the entire cleaning device, which can reduce the effect of the air inlet 211 on the push and pull of the bowl basket 5, thereby increasing the depth of the bowl basket 5 and improving the capacity of the bowl basket 5.

In some embodiments, as shown in FIG. 13 , the air inlet 211 is disposed on the top wall 12 of the cleaning chamber 11 in an area close to the side and the back panel 14 , that is, 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 effect of the air inlet 211 on the pushing and pulling of the bowl basket 5 , thereby increasing the depth and width of the bowl basket 5 and improving the capacity of the bowl basket 5 .

In some embodiments, as shown in FIG. 11 and FIG. 12 , the air inlet 211 is arranged downward and the supplementary air inlet 2131 is arranged upward, so that the damper 261 of the valve 26 controls the opening and closing of the air inlet 211 and the supplementary air inlet 2131 when rotating around the pivot axis.

Among them, the air inlet 211 is set downward, and the inner wall of the upper air duct 214 is opposite to the air inlet 211. The flow direction of the gas in the cleaning chamber 11 is bent when entering the air duct 21 from the air inlet 211, which blocks the water flow, reduces the direct spraying and splashing of the fan 22 by the water flowing into the air inlet 211, reduces the amount of water entering the air duct 21, and improves reliability.

In some embodiments, as shown in Figures 11 and 12, the upper air duct 214 is provided with an inclined first support surface 2144 on the bottom wall 16 opposite to the supplementary air inlet 2131, and at least a portion of the periphery of the supplementary air inlet 2131 is provided with a second support surface 21311. When the damper 261 closes the air inlet 211, the lower surface of the damper 261 fits with the first support surface 2144 and the second support surface 21311.

In this embodiment, the first supporting surface 2144 and the second supporting surface 21311 limit the damper 261 , thereby limiting the damper 261 from rotating in a direction close to the air inlet 211 .

In some embodiments, when the exhaust assembly 4 and the fan 22 are in operation, the exhaust volume of the exhaust assembly 4 is not less than the volume of gas entering the cleaning chamber 11 from the outside.

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 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.

In this embodiment, when the exhaust volume of the exhaust assembly 4 is not less than the amount of gas entering the cleaning chamber 11 from the outside, the cleaning chamber 11 is in a normal pressure or negative pressure environment, and the negative pressure environment is helpful to improve the drying rate.

When the fan 22 and the exhaust component 4 work at the same time, the fan 22 can circulate the air in the clean chamber 11, and the exhaust component 4 extracts and discharges the air in the clean chamber 11. At this time, the fan 22 will mainly introduce outside air, and a small amount of air in the chamber will be sucked in for circulation. At this time, the internal and external circulations are carried out simultaneously, which can increase the speed of moisture discharge in the clean chamber 11, meet the requirements of rapid moisture removal, and further improve the effect of uniform drying of the entire chamber.

In some embodiments, as shown in Figures 14 and 15, the fan 22 includes: an upper shell 221, an impeller 222 and a motor assembly, the motor assembly is dynamically coupled to the impeller 222, the upper shell 221 is connected to the upper air duct 214 to form a accommodating cavity, and the impeller 222 is installed in the accommodating cavity.

The upper air duct 214 includes a bottom shell, and a fan 22 installation position matching the size of the upper shell 221 is provided in the air duct 21. The upper shell 221 is connected to the bottom shell of the upper air duct 214 to form a accommodating cavity. The fan 22 can only retain the upper shell 221, the impeller 222 and the motor assembly. The bottom shell of the upper air duct 214 serves as the lower shell of the fan 22. Through the structure of assembling the fan 22 and the upper air duct 214, the installation space of the fan 22 can be increased and the power of the fan 22 that can be installed can be increased.

In this embodiment, the fan 22 is installed in the upper air duct 214. The fan 22 can only retain the upper shell 221, the impeller 222 and the motor assembly, and the original lower shell of the fan 22 is omitted, thereby reducing the overall size of the fan 22. A larger fan 22 can be installed in the same space, and the upper air duct 214 replaces the lower shell of the fan 22, and the impeller 222 is directly installed in the upper air duct 214, thereby increasing the air inlet area of the air inlet 211 and increasing the air intake volume.

In some embodiments, as shown in Figures 4 and 15, a sealing device 25 is provided between the fan 22 and the upper air duct 214. The sealing device 25 can be a sealing ring, a tape or a filling glue, etc., to seal the gap between the inner tank 1 of the cleaning equipment, the fan 22 and the upper air duct 214.

At the same time, the entire impeller 222 and the motor assembly are wrapped between the upper air duct 214 and the upper shell 221 of the fan 22, and a seal is adopted in the middle. During the operation of the entire cleaning equipment, the inner tank 1 of the cleaning equipment, the fan 22 and the upper air duct 214 are a closed space, which can reduce the amount of water vapor leaking through the gap between the fan 22 and the upper air duct 214 at each stage, thereby reducing hidden dangers.

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

In some embodiments, as shown in Figures 4, 14 and 15, the cleaning device further comprises a water retaining cover 24, which is mounted on the air inlet 211. The water retaining cover 24 can be connected to the air inlet 211 by threaded connection, plug-in connection, pivot connection or snap connection.

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

In some embodiments, as shown in Figures 16 and 17, the cleaning device also includes: a side panel 3, a heater 23 installed in the area of the air duct 21 located on the side of the inner tank 1, the side panel 3 installed on the side wall 13 of the inner tank 1, and a cover arranged outside at least part of the air duct 21.

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

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

In some embodiments, as shown in FIG. 17 , the inner side surface of the side panel 3 is spaced from the air duct 21 by a distance c, and the distance c satisfies: c≥2 mm.

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

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

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

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

In some embodiments, as shown in FIG. 5 , the air outlet 212 is provided with a grille 2156 .

Among them, the grille 2156 is used to guide the airflow. The grille 2156 can guide the airflow of the air outlet 212 into different directions. The guide direction of the grille 2156 can be determined according to the installation position of the exhaust component 4 and the installation position of the air inlet 211 of the air duct 21.

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

For example, if the exhaust component 4 is located in the upper left part of the cleaning chamber 11, the grille 2156 can appropriately guide the hot air in the lower rear direction of the cleaning chamber 11, thereby extending the flow path of the hot air in the cleaning chamber 11, increasing the area of the gas heated by the heater 23 flowing through the entire cleaning chamber 11, improving the effects of full-chamber drying and dead-corner drying of the cleaning chamber 11, and reducing the amount of hot air discharged by the exhaust component 4 without being utilized, thereby increasing the utilization efficiency of the hot air thermal energy.

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

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

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

In the internal circulation drying working mode, the fan 22 and the heater 23 are working, and the exhaust assembly 4 is stopped. 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 colder area in the cleaning chamber 11 can evaporate and dry faster through heat transfer and convection heat exchange, which is conducive to the drying of the entire cavity in the cleaning chamber 11 and reduces the drying dead corners.

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

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

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

Third, the cleaning equipment has a mixed working mode;

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

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

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

The terms "first", "second", etc. in the specification 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 interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and/or" in the specification and claims represents at least one of the connected objects, and the character "/" generally indicates that the objects associated with each other are in an "or" relationship.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

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

In the description of the present application, “plurality” means two or more.

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

In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims (11)

1. An air duct assembly, characterized in that it is applied to a cleaning device, and the air duct assembly comprises: An upper air duct, wherein the upper air duct is provided with an air supply inlet and an air inlet; A driving mechanism, the driving mechanism being installed in the upper air duct; A transmission mechanism, wherein an input end of the transmission mechanism is dynamically coupled to an output end of the drive mechanism; A valve is connected to the output end of the transmission mechanism by power coupling, and the valve is used to selectively close the air supply inlet and the air inlet. 2. The air duct assembly according to claim 1, characterized in that the transmission mechanism comprises: A slider, the slider is slidably mounted on the upper air duct, and the output end of the driving mechanism is dynamically coupled to the slider; A bracket is pivotally mounted on the slider and connected to the valve. 3. The air duct assembly according to claim 2 is characterized in that the valve is pivotally mounted on the upper air duct, the bracket is pivotally connected to the valve, and the rotation axis between the bracket and the valve is parallel and spaced apart from the rotation axis between the valve and the upper air duct. 4. The air duct assembly according to claim 3, characterized in that the valve comprises: A damper, the damper can selectively close the air supply inlet and the air inlet; a valve shaft, the valve shaft being connected to the damper and being pivotally mounted on the upper air duct; A pull rod is connected to the damper, and the bracket is pivotally connected to the pull rod. 5 . The air duct assembly according to claim 4 , wherein the bracket has a supporting claw with one end open, and the pull rod is supported by the supporting claw. 6 . The air duct assembly according to claim 5 , wherein a relief opening is provided on a side of the bracket facing the upper air duct. 7. The air duct assembly according to any one of claims 2 to 6, characterized in that a slide groove is provided on the upper surface of the upper air duct, and the sliding block is slidably installed in the slide groove. 8. The air duct assembly according to claim 2, wherein the slider comprises: A base, the base being slidably mounted on the upper air duct; A support plate is connected to the base, and an output end of the driving mechanism is connected to the support plate, and the bracket is pivotally mounted on the support plate. 9. The air duct assembly according to claim 8 is characterized in that the support plates are a pair, surfaces of the two support plates facing away from each other are provided with a pivot structure, the bracket is rotatably connected to the pivot structure, surfaces of the two support plates facing each other are provided with a connecting structure, and the output end of the driving mechanism is connected to the connecting structure. 10. The air duct assembly according to any one of claims 1 to 6, characterized in that the driving mechanism comprises a wax motor. 11. A cleaning device, comprising: The liner forms a cleaning chamber; an exhaust assembly, mounted on the inner tank, and configured to exhaust the gas in the cleaning chamber when opened; The air duct assembly according to any one of claims 1 to 10, wherein the upper air duct is installed on the inner tank, the air inlet is connected to the cleaning chamber, and the air supply inlet is connected to the outside; A lower air duct, the lower air duct is communicated with the upper air duct and has an air outlet, the air outlet is communicated with the cleaning chamber; A fan is installed in the upper air duct, and the air inlet and the air supply inlet are both connected to the inlet of the fan, and the outlet of the fan is connected to the air outlet; A heater is configured to heat the gas flowing through the downwind duct when the heater is turned on.