CN221963553U - Cleaning Equipment - Google Patents

Abstract

The application discloses cleaning equipment, and belongs to the field of cleaning equipment. The cleaning device includes: the air conditioner comprises an inner container, an exhaust assembly, an air duct, a fan, a heater and a water retaining cover; the inner container forms a cleaning chamber; the exhaust assembly is configured to exhaust gas within the cleaning chamber when opened; the air duct is provided with an air inlet communicated with the cleaning cavity and an air outlet communicated with the cleaning cavity, and the air inlet is positioned on the top wall of the liner; the fan is configured to drive the gas in the air duct when the fan is started; the heater is configured to heat the gas in the air duct when turned on; the projection of the top wall of the liner is at least partially overlapped with the projection of the top wall of the liner, and the projection of the top wall of the liner is covered by the water blocking cover. The application improves the utilization rate of hot air heat energy, reduces the water quantity of water flowing into the fan from the inlet of the fan directly, and improves the reliability of the working state of internal circulation components such as the fan, the heater and the like.

Description

Cleaning Equipment

Technical Field

The present application belongs to the technical field of household appliances, and in particular to 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.

However, opening the exhaust component will cause the heat energy of the heated air to be discharged from the cleaning chamber without being fully utilized, resulting in problems such as high energy consumption, low drying efficiency and poor drying effect. In addition, during the cleaning process, the cleaning water can easily flow to the outside of the cleaning chamber, causing the risk of damage to the electrical equipment of the cleaning equipment. The reliability is poor and needs 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 and reduces the energy consumption of the hot air drying working mode of the cleaning device compared to the cleaning device that performs hot air drying through external circulation, and reduces the amount of water that directly rushes into the interior of the fan from the inlet of the fan in the cleaning mode of the cleaning device, thereby improving the reliability of the working state of the internal circulation components such as the fan and the heater.

In a first aspect, the present application 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, mounted on the inner liner and having an air inlet communicating with the cleaning chamber and an air outlet communicating with the cleaning chamber, wherein the air inlet is located on the top wall of the inner liner;

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

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

A water retaining cover, the water retaining cover is installed on the air inlet;

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

According to the cleaning equipment provided by the embodiment of the present application, on the one hand, by setting internal circulation components such as an air duct, a fan and a heater, the air inlet and the air outlet of the air duct are both connected to the cleaning chamber, the 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, and the dry gas in the cleaning chamber is circulated and heated by the heater to achieve hot air drying of the dishes in the cleaning chamber. Compared with 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. On the other hand, by setting the relationship between the projection S1 of the inlet of the fan on the top wall of the inner tank, the projection S2 of the air inlet on the top wall of the inner tank and the projection S3 of the water retaining cover on the top wall of the inner tank, the suction area of the fan can be increased, the drying efficiency can be improved, and the amount of water directly rushing into the interior of the fan from the inlet of the fan can be reduced in the cleaning mode of the cleaning equipment, thereby improving the working reliability of internal circulation components such as the fan and heater.

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

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

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

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

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

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

According to an embodiment of the present application, the air duct further has a supplementary air inlet, the supplementary air inlet is connected to the outside, and the supplementary air inlet is connected to the inlet of the fan.

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

According to one embodiment of the present application, the air duct also has a make-up air inlet, which is connected to 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.

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

According to one embodiment of the present application, the cleaning device has an internal circulation drying working mode, in which the fan and the heater are working, and the exhaust component is stopped;

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

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

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

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

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

According to one embodiment of the present application, the power of the heater is P, satisfying: P≤500W.

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

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

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

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

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

FIG6 is a fourth schematic diagram of the structure of the internal circulation component provided in an embodiment of the present application;

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

FIG8 is a second schematic diagram of the structure of the cleaning device provided in an embodiment of the present application;

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

FIG10 is a third schematic diagram of the structure of the cleaning device provided in an embodiment of the present application;

FIG11 is a fifth structural schematic diagram of an internal circulation component provided in an embodiment of the present application;

FIG12 is a fourth schematic diagram of the structure of the cleaning device provided in an embodiment of the present application;

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

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

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

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

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

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

FIG. 19 is a ninth structural schematic diagram 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 inlet end 20, flange 201, air duct 21, air inlet 211, air outlet 212, air supply branch 213, air supply inlet 2131;

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

Downwind duct 215, first branch 2151, second branch 2152, guide 2153, expansion section 2154, isolation plate 2155, grille 2156; cover 2157; fourth connection structure 21571; main body 2158, upper connection section 21581, duct shell 21582, third connection structure 21583, heat spreader 21584, heater installation position 21585, thermostat installation position 21586, main wind duct 216; flexible connector 217, cover 2171, second connection structure 21711, sleeve 2172, avoidance hole 2173;

Fan 22, upper shell 221, impeller 222; heater 23;

Water retaining cover 24, water retaining plate 241, annular rib 2411, mounting structure 242, card slot 2421, connecting piece 2422, hollow slot 24221, card joint 2423; main cover body 243, tube body 2431, air passage 2432, flange 2433, sealing mounting position 24331, raised portion 24332, reinforcing rib 24333, water guide port 2434; water retaining piece 2444, first plate 2441, second plate 2442, guide surface 2443; sealing device 25; valve 26, damper 261, first part 2611, second part 2612; thermostat 29;

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 a cleaning device according to an embodiment of the present application with reference to FIGS. 1 to 19 . The cleaning device of the present application can clean and dry a variety of items such as tableware or clothing.

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

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

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

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 items to be cleaned. The items to be cleaned can be cleaned and dried in the cleaning chamber 11. The items to be cleaned can be tableware such as bowls, chopsticks, plates and pots.

As shown in FIG. 1 , there may be an item rack in the cleaning chamber 11. 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.

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 being dried with hot air, 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.

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

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

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.

The air duct 21 can be installed on the outside or inside of the inner container 1, and the air duct 21 can be connected to the wall surface of the inner container 1 by means of clamping, threading or welding.

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

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 .

In this embodiment, as shown in Figure 1, the air inlet 211 of the air duct 21 is located on the top wall 12 of the inner liner 1. The air inlet 211 of the air duct 21 can be located in the middle of the top wall 12 of the inner liner 1, or can be located near the top wall 12 of the inner liner 1 near the side, depending on the usage scenario.

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

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

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

The fan 22 may be installed on the top wall 12 of the inner tank 1 and may have the following structural form:

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

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

By arranging the air duct 21 outside the inner container 1 , the inner space of the cleaning chamber 11 is not occupied, thereby increasing the capacity of the cleaning chamber 11 .

Among them, the fan 22 can be installed above the top wall 12 of the cleaning chamber 11, with the suction side of the fan 22 facing the cleaning chamber 11. When the fan 22 is running, the air with high temperature in the upper part of the cleaning chamber 11 can be introduced into the bottom of the cleaning chamber 11 through the air duct 21, which is beneficial to the uniformity of temperature distribution in the entire cleaning chamber 11.

In actual use, when the cleaning equipment is matched with an automatic door opening or automatic door opening and closing solution as the main means of dehumidification, the hot air in the cleaning chamber 11 will move upward and backward in the cleaning chamber 11 due to natural convection. This installation position of the air inlet 211 and the fan 22 can avoid a large amount of hot and humid air from remaining above the cleaning chamber 11, reduce drying dead corners, and help improve the overall drying effect and rate.

In this embodiment, the fan 22 can be installed above the top wall 12 of the cleaning chamber 11. The thickness of the fan 22 is not less than 20 mm. For example, the thickness of the fan 22 can be 5 mm, 10 mm, 15 mm or 18 mm. By setting the thickness of the fan 22, it can be suitable for the dimensions between the top wall 12 of various inner tanks 1 and the outer casing of the cleaning equipment, thereby increasing the circulating air volume, thereby increasing the power of the heater 23 and achieving a better drying effect.

The fan 22 can be connected to the air inlet 211 of the air duct 21, so that the fan 22 can draw the gas in the cleaning chamber 11 into the air duct 21 when it is turned on. 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 heater 23 can heat the gas flowing through the air duct 21 by electromagnetic heating, infrared heating or resistance heating. The heater 23 using resistance heating can be a PTC (Positive Temperature Coefficient) heating device, a resistance wire heating device or a resistance coil heating device.

When turned on, the heater 23 heats the gas flowing through the air duct 21. The heater 23 can be installed in the air duct 21 to perform direct contact heat exchange with the gas flowing through the air duct 21; the heater 23 can also be installed outside the air duct 21 to indirectly exchange heat with the gas flowing through the air duct 21 by heating the pipe wall of the air duct 21.

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

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

In this embodiment, the projection S1 of the inlet of the fan 22 on the top wall 12 of the inner liner 1, the projection S2 of the air inlet 211 on the top wall 12 of the inner liner 1, and the projection S3 of the water retaining cover 24 on the top wall 12 of the inner liner 1 have a relationship as shown in Figure 4. The projection S1 of the inlet of the fan 22 on the top wall 12 of the inner liner 1 and the projection S2 of the air inlet 211 on the top wall 12 of the inner liner 1 partially overlap or completely overlap, so as to increase the suction area of the fan 22, accelerate air circulation, increase the circulating air volume entering the air duct 21, and improve the drying efficiency.

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

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

According to the cleaning equipment provided by the embodiment of the present application, on the one hand, by providing the internal circulation components 2 such as the air duct 21, the fan 22 and the heater 23, the air inlet 211 and the air outlet 212 of the air duct 21 are both connected with the cleaning chamber 11, the gas in the cleaning chamber 11 is sucked into the air duct 21 from the air inlet 211 of the air duct 21 by the fan 22, and the hot air heated by the heater 23 enters the cleaning chamber 11 from the air outlet 212 of the air duct 21, and the dry gas in the cleaning chamber 11 is circulated and heated by the heater 23 to achieve hot air drying of the dishes in the cleaning chamber 11. Compared with 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. On the other hand, by setting the relationship among the projection S1 of the inlet of the fan 22 on the top wall 12 of the inner tank 1, the projection S2 of the air inlet 211 on the top wall 12 of the inner tank 1, and the projection S3 of the water retaining cover 24 on the top wall 12 of the inner tank 1, the suction area of the fan 22 can be increased, the drying efficiency can be improved, and the amount of water directly rushing into the interior of the fan 22 from the inlet of the fan 22 can be reduced in the cleaning mode of the cleaning equipment, thereby improving the working reliability of the internal circulation components 2 such as the fan 22 and the heater 23.

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

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

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

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

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

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

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

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

In some embodiments, as shown in FIG. 17 , 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, as shown in Figure 12, 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 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 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. 1 , FIG. 8 and FIG. 12 , the air inlet 211 is disposed near the back plate 14 of the inner liner 1 , and the air outlet 212 of the air duct 21 includes a plurality of air outlets 212 disposed on the same side wall 13 of the inner liner 1 .

In this embodiment, the air inlet 211 can be located on the top wall 12 of the cleaning chamber 11 and close to the back panel 14, that is, the center of the air inlet 211 is located in the rear half of the entire cleaning device, which can reduce the impact of the air inlet 211 on the 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. 17 , the air inlet 211 of the air duct 21 is disposed on the top wall 12 of the cleaning chamber 11 in an area close to the side surface and the back plate 14 .

In this embodiment, the air inlet 211 of the air duct 21 is located at the rear corner of the top wall 12 of the cleaning chamber 11, which can further reduce the influence 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.

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

By providing a plurality of air outlets 212 , the uniform flow of air in the cleaning chamber 11 can be improved, the uniformity of temperature and humidity can be improved, and the drying dead corners can be reduced.

Among them, the main air duct 216, the first branch 2151 and the second branch 2152 form a "Y"-shaped air duct 21, the upper end of the first branch 2151 and the first end of the second branch 2152 are both connected to the main air duct 216, and the lengths and angles of the first branch 2151 and the second branch 2152 can be the same or different, and are set specifically according to the actual usage scenario.

Among them, the air supply branch 213 is arranged side by side with the main air duct 216. The air supply branch 213 can be located on the side of the main air duct 216 close to the front end opening 15 of the inner tank 1, or on the side of the main air duct 216 close to the back plate 14 of the inner tank 1, thereby improving the integration of the cleaning equipment, not encroaching on the length direction of the cleaning equipment, and increasing the capacity of the cleaning chamber 11.

In this embodiment, the internal circulation components 2 such as the fan 22 and the heater 23 can be located in the main air duct 216, so that one fan 22 can be used to drive the gas flow of the first branch 2151 and the second branch 2152, and one heater 23 can be used to heat the gas flowing through the first branch 2151 and the second branch 2152, thereby reducing costs. At the same time, multiple air outlets 212 can improve the uniform flow of airflow in the cleaning chamber 11, improve the uniformity of temperature and humidity, and reduce drying dead corners.

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

In this embodiment, the first branch 2151 forms an angle with the main air duct 216, and the make-up air inlet 2131 faces the upper side wall 13 of the first branch 2151, that is, the make-up air inlet 2131 is located within the angle between the first branch 2151 and the main air duct 216, which further improves the integration of the cleaning equipment without encroaching on the length dimension of the cleaning equipment, thereby increasing the capacity of the cleaning chamber 11.

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

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

In some embodiments, as shown in FIG. 10 , the airflow of the main air duct 216 flows obliquely toward the front, the first branch 2151 is located in front of the second branch 2152 , and the length of the first branch 2151 on the front side is greater than that of the second branch 2152 .

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

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

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

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

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

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

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

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

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 to compress the sealing device 25. The sealing device 25 is located between the air duct 21 and the inner tank 1 to reduce the 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 FIG. 2 , FIG. 6 and FIG. 7 , the air duct 21 further has a supplementary air inlet 2131 , which is connected to the outside and to the inlet of the fan 22 .

The air supply inlet 2131 of the air duct 21 is connected to the outside, 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.

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 to realize various working modes of the cleaning device.

When only the fan 22 is working, in order to maintain the pressure balance in the clean chamber 11, the fan 22 will absorb only the air in the clean 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 clean 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 clean 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, internal and external circulation are carried out simultaneously, which can effectively improve the rapid dehumidification requirements in the dehumidification stage.

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.

The present application sets up an air supply inlet 2131 of the air duct 21 connected to the outside, so that the air pressure balance in the cleaning chamber 11 can be maintained through the air supply inlet 2131 when the exhaust component 4 is working, and the vacuum degree in the cleaning chamber 11 can be reduced, so that a high exhaust rate can be maintained, and the water vapor in the cleaning chamber 11 can be quickly discharged, thereby improving the overall dehumidification rate and drying rate of the cleaning equipment, and further reducing the energy consumption of hot air drying.

In this embodiment, the air inlet 211, the air supply inlet 2131 and the air outlet 212 can be located on the same wall surface 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 of the air duct 21 can be set according to the specific usage scenario.

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

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

In this embodiment, the air duct 21 includes two branches, an internal circulation and an external circulation. The air inlet 2131 of the air supply branch 213 is connected to the outside, and the air supply outlet of the air supply branch 213 is connected to the cleaning chamber 11. The setting of the air supply branch 213 forms an external circulation branch of the cleaning chamber 11; the branch with the air inlet 211 and the air outlet 212 connected to the cleaning chamber 11 belongs to the internal circulation branch. As shown in Figure 11, the hollow arrows represent the external circulation, and the solid arrows represent the internal circulation.

The air supply branch 213 extends to the side of the inner tank 1 to improve the integration of the cleaning equipment, does not occupy the height dimension of the cleaning equipment, and increases the capacity of the cleaning chamber 11.

By providing the air supply branch 213, external circulation and/or internal circulation of the cleaning chamber 11 can be achieved, so as to realize various working modes of the cleaning device.

When only the fan 22 is working, in order to maintain the pressure balance in the clean chamber 11, the fan 22 will absorb only the air in the clean 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 clean 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 clean 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, internal and external circulation are carried out simultaneously, which can effectively improve the rapid dehumidification requirements in the dehumidification stage.

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

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.

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

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

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

Among them, the fan 22 can be installed above the top wall 12 of the cleaning chamber 11, with the suction side of the fan 22 facing the cleaning chamber 11. When the fan 22 is running, the air with high temperature in the upper part of the cleaning chamber 11 can be introduced into the bottom of the cleaning chamber 11 through the air duct 21, which is beneficial to the uniformity of temperature distribution in the entire cleaning chamber 11.

In actual use, when the cleaning equipment is matched with an automatic door opening or automatic door opening and closing solution as the main means of dehumidification, the hot air in the cleaning chamber 11 will move upward and backward in the cleaning chamber 11 due to natural convection. This installation position of the air inlet 211 and the fan 22 can avoid a large amount of hot and humid air from remaining above the cleaning chamber 11, reduce drying dead corners, and help improve the overall drying effect and rate.

In this embodiment, the fan 22 can be installed above the top wall 12 of the cleaning chamber 11. The thickness of the fan 22 is not less than 20 mm. For example, the thickness of the fan 22 can be 5 mm, 10 mm, 15 mm or 18 mm. By setting the thickness of the fan 22, it can be suitable for the dimensions between the top wall 12 of various inner tanks 1 and the outer casing of the cleaning equipment, thereby increasing the circulating air volume, thereby increasing the power of the heater 23 and achieving a better drying effect.

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

It should be noted that in actual use, it is impossible to achieve complete sealing of the cleaning chamber 11. There is still a small amount of gas exchange between the cleaning chamber 11 and the outside world. When the exhaust volume of the exhaust component 4 is not less than the amount of gas entering the cleaning chamber 11 from the outside world, the cleaning chamber 11 is in a normal pressure or negative pressure environment, and the negative pressure environment is helpful to improve the drying rate.

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

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.

In some embodiments, as shown in Figures 18 and 19, the cleaning device also includes: a side panel 3, a heater 23 installed in the area of the air duct 21 located on the side of the inner tank 1, the side panel 3 installed on the side wall 13 of the inner tank 1, and the side panel 3 is covered 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. 19 , 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 generates 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, thereby reducing the risk of people being scalded by contact with the side wall 13. In the embedded installation of the cleaning equipment, the high temperature of the side panel 3 can be reduced to damage the inner wall of the installation cabinet.

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

The power P of the heater 23 may be 150W, 200W, 350W, 400W or 500W, which may be specifically limited according to usage conditions.

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

The present application utilizes the internal circulation hot air drying mode, increases the power of the heater 23, and sets the power of the heater 23 to P. The hot air drying can be used as the main energy source, and the high-temperature rinsing can be converted into an auxiliary energy source, which can significantly shorten the drying time of the tableware and improve convenience.

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

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

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

In some embodiments, as shown in FIG. 9 , a sealing device 25 is provided between the fan 22 and the air duct 21 . The sealing device 25 may be a sealing ring, a tape or a filling glue, etc., to seal the gap between the inner tank 1 of the cleaning equipment, the fan 22 and the air duct 21 .

At the same time, the entire impeller 222 and the motor assembly are wrapped between the air duct 21 and the upper shell 221 of the fan 22, and a seal is adopted in the middle. During the operation of the entire cleaning equipment, the inner tank 1 of the cleaning equipment, the fan 22 and the air duct 21 belong to a closed space, which can reduce the amount of water vapor leaking through the gap between the fan 22 and the air duct 21 at each stage and reduce hidden dangers.

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

In some embodiments, 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 the present 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 (16)

1. A cleaning apparatus, comprising:

A liner forming a cleaning chamber;

An exhaust assembly mounted to the inner container and configured to exhaust gas in the cleaning chamber when opened;

The air duct is arranged on the inner container and is provided with an air inlet communicated with the cleaning cavity and an air outlet communicated with the cleaning cavity, and the air inlet is positioned on the top wall of the inner container;

The fan is arranged on the top wall of the liner and is configured to drive the gas in the air duct under the condition of opening;

a heater configured to heat the gas in the air duct with the heater turned on;

The water blocking cover is arranged on the air inlet;

The projection of the inlet of the fan on the top wall of the liner is at least partially overlapped with the projection of the air inlet on the top wall of the liner, and the projection of the water retaining cover on the top wall of the liner covers the projection of the air inlet on the top wall of the liner.

2. The cleaning apparatus of claim 1, wherein an area of intersection of a projection of the inlet of the blower at the top wall of the liner and a projection of the air inlet at the top wall of the liner is not less than 1/2 of a projection of the inlet of the blower at the top wall of the liner.

3. The cleaning apparatus of claim 1, wherein any area of the projection of the air inlet on the top wall of the liner is spaced apart from the edge of the projection of the water deflector cover on the top wall of the liner.

4. The cleaning apparatus of claim 1, wherein a ratio of a projection of the water blocking cover on the top wall of the liner to a projection of the air inlet on the top wall of the liner is not less than 1.1.

5. The cleaning apparatus of claim 1, wherein the air inlet is disposed proximate to the back plate of the liner, and the air outlet of the air duct comprises a plurality of air outlets disposed on a same side wall of the liner.

6. The cleaning apparatus of claim 5, wherein the air duct comprises: the fan comprises a first branch and a second branch, wherein the upper ends of the first branch and the second branch are communicated with an outlet of the fan, the lower ends of the first branch and the second branch are respectively provided with an air outlet, the lower end of the first branch is close to a front end opening of the liner, the lower end of the second branch is close to a back plate of the liner, and the length of the first branch is greater than that of the second branch.

7. The cleaning apparatus of claim 5, wherein the air duct comprises a lower air duct, a plurality of the air outlets are formed at a lower end of the lower air duct, a width of the lower air duct in a front-rear direction becomes gradually larger from top to bottom, and a thickness of the lower air duct in a left-right direction becomes gradually smaller from top to bottom.

8. The cleaning apparatus of claim 1, wherein the air duct further has a make-up air inlet, the make-up air inlet being in communication with the outside, and the make-up air inlet being in communication with the inlet of the blower.

9. The cleaning apparatus of claim 8, wherein the blower is mounted above a top wall of the liner, the air duct comprising: the air supplementing branch extends from the top wall of the inner container to the side surface of the inner container, and the lower end of the air supplementing branch forms an air supplementing inlet positioned on the side surface of the inner container; under the condition that the exhaust assembly and the fan work, the exhaust amount of the exhaust assembly is not less than the air supplementing amount of the air supplementing branch.

10. The cleaning apparatus of claim 1, wherein the air duct further has a make-up air inlet, the make-up air inlet being in communication with the outside; the air duct is provided with a valve, and the valve is configured to normally close the air supplementing inlet and open under the action of pressure difference.

11. The cleaning apparatus of claim 10, wherein the cleaning device comprises a cleaning device,

The fan install in the roof top of inner bag, the wind channel includes: the air supplementing branch is positioned between the main air channel and the top wall of the liner, and the valve is arranged on the wall surface between the air supplementing branch and the main air channel; the valve comprises an air door which is pivotally arranged on a wall surface between the air supplementing branch and the main air duct, a first part of the air door is positioned on the air supplementing branch, a second part of the air door is positioned on the main air duct, and the air door is configured to block the air supplementing branch under the action of gravity and is opened under the condition that the fan is opened.

12. The cleaning apparatus as claimed in any one of claims 1 to 11, wherein,

The cleaning equipment is provided with an internal circulation drying working mode, wherein the fan and the heater work in the internal circulation drying working mode, and the exhaust assembly is stopped;

And/or the cleaning device has a dehumidifying negative pressure operation mode in which the blower and the heater are stopped and the air discharging assembly is operated;

And/or the cleaning device has a hybrid mode of operation; in the hybrid operating mode, the blower, the heater and the exhaust assembly all operate;

And/or the cleaning device has a hybrid dehumidification mode of operation; in the mixed dehumidification mode of operation, the fan with exhaust subassembly is all worked, the heater shut down.

13. The cleaning apparatus defined in any one of claims 1-11, wherein an amount of exhaust gas from the exhaust assembly is not less than an amount of gas entering the cleaning chamber from the outside when the exhaust assembly is in operation.

14. The cleaning apparatus defined in any one of claims 1-11, further comprising: the side plate is arranged in the area of the air duct, which is positioned on the side face of the inner container, the side plate is arranged on the side wall of the inner container and covers at least part of the air duct, and the inner side face of the side plate is spaced apart from the air duct and the heater.

15. The cleaning apparatus defined in any one of claims 1-11, wherein the heater has a power P that satisfies: p is less than or equal to 500W.

16. The cleaning apparatus defined in any one of claims 1-11, wherein the blower comprises: the air conditioner comprises an upper shell, an impeller and a motor assembly, wherein the motor assembly is in power coupling connection with the impeller, the upper shell is connected with the air duct to form a containing cavity, and the impeller is installed in the containing cavity.