Air duct assembly and cleaning equipment

Abstract

The utility model belongs to the technical field of electric appliances, and discloses an air duct assembly and cleaning equipment. The air duct assembly comprises a shell and an exhaust fan, an exhaust air duct, a water storage cavity, a circulating air supply port, a circulating exhaust port and a water inlet are formed in the shell, an air inlet of the exhaust air duct is communicated with the circulating exhaust port, and the air outlet end of the exhaust air duct is communicated with the water storage cavity and located below the liquid level of the water storage cavity. The circulating air extraction opening is communicated with the water storage cavity and located above the liquid level of the water storage cavity, the circulating air extraction opening and the circulating air supply opening are both used for being communicated with the inner container, and the water inlet is used for supplying water to the water storage cavity; the exhaust fan is used for promoting air flow in the air exhaust duct to flow to the water storage cavity from the circulating air exhaust opening. The cleaning equipment comprises an inner container and an air duct assembly, and the circulating extraction opening and the circulating air supply opening are both communicated with the inner container. According to the air duct assembly and the cleaning equipment, the humidity in the inner container in the drying process can be reduced, the structure of the air duct assembly is simplified, and the cost of the air duct assembly and the cleaning equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to an air duct component and a cleaning device. Background Art

[0002] Equipment such as dishwashers and disinfection cabinets that can dry tableware or other items will generate a large amount of hot and humid airflow in the inner tank during the drying process. If the hot and humid airflow cannot be discharged in time, it will affect the drying efficiency.

[0003] In the prior art, internal circulation dehumidification or blowing dry gas into the inner tank is usually used to reduce humidity. Among them, the internal circulation dehumidification method is usually to discharge the hot and humid gas into the circulating air duct, and the hot and humid gas is partially condensed when flowing through the condensation structure set in the circulating air duct, and the condensed gas flows back into the inner tank; the method of blowing dry gas into the inner tank is usually to use a fan to introduce external air into the air duct and at the same time draw the hot and humid gas in the inner tank into the air duct, so that the external dry gas is mixed with the hot and humid gas in the inner tank, and then the mixed gas is passed into the inner tank.

[0004] In the prior art, a condensation structure is used to condense and dehumidify the circulating air duct, which requires an additional condensation structure to be arranged inside the air duct, resulting in a larger overall structural size of the air duct assembly and increased cost; and a method of first blowing dry gas into the inner tank to reduce humidity is used, which is prone to increase in air pressure inside the inner tank due to external gas blowing into the inner tank, resulting in overflow of gas in the inner tank, which in turn causes the cabinet where the equipment is located to produce odor or mold due to the humid environment, affecting the cleanliness of the environment where the equipment is located, and is not conducive to the safety, reliability and practicality of the equipment. Utility Model Content

[0005] The purpose of the utility model is to provide an air duct assembly and a cleaning device, which can simplify the structure of the air duct assembly, reduce the space occupied by the air duct assembly, reduce the probability of air overflow in the inner tank, and improve the safety and reliability of the cleaning device while reducing the humidity of the gas in the inner tank.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An air duct assembly, comprising:

[0008] The shell has an exhaust duct, a water storage cavity, a circulating air supply port, a circulating air exhaust port and a water inlet inside, the air inlet of the exhaust duct is connected with the circulating air exhaust port, the air outlet end of the exhaust duct is connected with the water storage cavity and is located below the liquid level of the water storage cavity, and is spaced from the cavity bottom of the water storage cavity, the circulating air exhaust port is connected with the water storage cavity and is located above the liquid level of the water storage cavity, the circulating air exhaust port and the circulating air supply port are both used to communicate with the inner tank, and the water inlet is used to supply water to the water storage cavity;

[0009] An exhaust fan is installed on the shell and arranged on the flow path of the fluid in the exhaust duct, and is used to promote the air flow in the exhaust duct to flow from the circulating exhaust port to the water storage chamber.

[0010] As an optional technical solution for an air duct assembly, the exhaust air duct is arranged to be inclined downward in the air outlet direction of the air outlet end.

[0011] As an optional technical solution for an air duct component, the exhaust duct has an air outlet channel portion at one end away from the circulating air exhaust port, the air outlet channel portion is arranged in an arc shape, and the arc opening of the air outlet channel portion is inclined upward, and the end tangent of the air outlet channel portion is inclined downward.

[0012] As an optional technical solution of an air duct assembly, the shell is provided with an overflow port, the overflow port is communicated with the water storage cavity and is higher than the air outlet end of the air extraction air duct, and the overflow port is used to communicate with the inner tank;

[0013] And / or, the shell has a water inlet chamber inside, the water inlet chamber and the water storage chamber are separated in the horizontal direction by a partition component, the upper end of the partition component is higher than the air outlet end of the exhaust duct, and the water inlet is connected to the water inlet chamber.

[0014] As an optional technical solution of the air duct assembly, the shell has an air supply cavity inside, the air supply cavity is at least partially located on the upper side of the water storage cavity and communicated with the water storage cavity, and the circulating air supply port is arranged in the air supply cavity;

[0015] The exhaust duct includes an air intake channel section located between the circulating exhaust port and the fan inlet of the exhaust fan, a drain port is provided at the lowest point of the air intake channel section, a condensate water channel is provided inside the shell, the upper end of the condensate water channel is connected to the drain port, and the lower end of the condensate water channel is connected to the air supply cavity.

[0016] As an optional technical solution of an air duct component, the width of the condensate channel is 3 mm to 10 mm;

[0017] And / or, the lower end of the condensation water channel is offset from the water storage chamber in the horizontal direction.

[0018] As an optional technical solution of the air duct assembly, the condensate water channel has a first drainage section, the lower end of the first drainage section is connected to the air supply cavity, and the first drainage section extends obliquely from bottom to top along the upper side of the water storage cavity;

[0019] And / or, the air supply chamber includes an upper chamber portion and a lower chamber portion that are connected, the upper chamber portion is at least partially located above the water storage chamber, the lower chamber portion and the water storage chamber are arranged side by side in a horizontal direction, the circulating air extraction port is close to the lower side of the lower chamber portion, and the lower end of the condensate channel is spaced above the circulating air extraction port.

[0020] As an optional technical solution for an air duct component, the exhaust duct includes an exhaust channel section located between the fan outlet of the exhaust fan and the water storage chamber, the exhaust channel section extends from top to bottom and the lower end is inserted into the water storage chamber and is lower than the liquid level of the water storage chamber.

[0021] As an optional technical solution of an air duct assembly, a tapered channel portion is formed on at least the upper portion of the exhaust channel section, and a flow area of ​​the tapered channel portion gradually decreases in a direction away from the exhaust fan.

[0022] A cleaning device comprises an inner tank and the above-mentioned air duct assembly, wherein the circulating air suction port and the circulating air supply port are both connected to the inner tank.

[0023] As an optional technical solution for a cleaning device, the cleaning device is a dishwasher, and the water inlet is connected to the water supply component of the dishwasher; the shell is provided with an overflow port, the overflow port is connected to the water storage cavity and is higher than the air outlet end of the exhaust duct, and the overflow port is connected to the inner tank.

[0024] Beneficial effects of the utility model:

[0025] The air duct assembly provided by the utility model inserts the air outlet end of the exhaust duct into the water storage chamber and is located below the liquid level in the water storage chamber to form bubbles during the exhaust process of the exhaust duct, thereby reducing the humidity of the gas flowing to the circulating air supply port and improving the drying efficiency of the objects in the inner tank; at the same time, since there is no need to set up condensation structures such as condensers, the structure of the air duct assembly is simple, the space occupied is smaller, and the cost is lower.

[0026] The cleaning equipment provided by the utility model reduces the space occupied by the air duct assembly outside the inner tank by adopting the above-mentioned air duct assembly, simplifies the overall structure of the cleaning equipment, and reduces the overall cost of the cleaning equipment; at the same time, since the air duct assembly can realize the circulation of air in the inner tank and the exhaust duct, there is no need to add new gas to the inner tank, which will not cause the air pressure inside the inner tank to increase, thereby reducing the probability of air overflow from the inner tank and improving the safety and reliability of the cleaning equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a partial structural schematic diagram of the cleaning device provided by the embodiment of the utility model;

[0028] Figure 2is a cross-sectional view of an air duct assembly provided by an embodiment of the utility model;

[0029] Figure 3 It is a schematic diagram of the air duct assembly provided in the embodiment of the utility model.

[0030] In the figure:

[0031] 100, air duct assembly; 200, liner; 300, housing; 400, door; 500, water supply assembly;

[0032] 1. Shell; 11. Water inlet pipe; 12. Air inlet channel section; 121. First section; 122. Second section; 123. Third section; 13. Exhaust channel section; 131. Shrinkage channel section; 132. Air outlet channel section; 14. Water storage chamber; 15. Air supply chamber; 151. Upper chamber section; 152. Lower chamber section; 16. Condensate channel; 161. First drainage section; 162. Second drainage section; 163. Third drainage section; 17. Water inlet chamber; 171. Water inlet; 18. Mounting groove; 19. Circulating air outlet; 110. Circulating air supply port; 120. Overflow port; 130. Partition component; 2. Exhaust fan. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0037] like Figure 1 As shown, this embodiment provides a cleaning device, which has the function of drying objects in the inner liner 200, and can effectively reduce the humidity of the gas in the inner liner 200 during the drying process, improve the drying efficiency, and improve the safety and reliability of the cleaning device. The cleaning device can be a dishwasher or other device that can clean and dry objects.

[0038] Specifically, the cleaning device includes a body, a door 400 and an air duct assembly 100. The body has an inner liner 200 with an open front side and a housing 300 disposed outside the inner liner 200, wherein the inner liner 200 is used to place objects to be dried; the door 400 is movably mounted on the front side of the body to selectively open or close the front opening of the inner liner 200; the air duct assembly 100 is disposed between the inner liner 200 and the housing 300, and the air duct assembly 100 is used to realize the circulation of the gas in the inner liner 200 in the inner liner 200 and the air duct assembly 100, and reduce the humidity of the gas in the inner liner 200 during the circulation process, thereby improving the drying efficiency.

[0039] like Figures 1 to 3As shown, the air duct assembly 100 includes a shell 1 and an exhaust fan 2. The shell 1 has an exhaust duct, a water storage chamber 14, a circulating air supply port 110, a circulating air exhaust port 19 and a water inlet 171. The air inlet of the exhaust duct is connected with the circulating air exhaust port 19, the air outlet of the exhaust duct is connected with the water storage chamber 14 and is located below the liquid level of the water storage chamber 14, and is spaced from the bottom of the water storage chamber 14. The circulating air exhaust port 19 is connected with the water storage chamber 14 and is located above the liquid level of the water storage chamber 14. The circulating air exhaust port 19 and the circulating air supply port 110 are both used to communicate with the inner tank 200, and the water inlet 171 is used to supply water to the water storage chamber 14. The exhaust fan 2 is installed on the shell 1 and arranged on the flow path of the fluid in the exhaust duct, and is used to promote the airflow in the exhaust duct to flow from the circulating air exhaust port 19 to the water storage chamber 14.

[0040] The air duct assembly 100 provided in this embodiment, when the exhaust fan 2 is running, the hot and humid gas in the inner tank 200 enters the exhaust duct from the circulating exhaust port 19, and flows to the water storage chamber 14 through the exhaust duct; because the air outlet end of the exhaust duct extends into the water storage chamber 14 and is lower than the liquid level in the water storage chamber 14, the hot and humid gas flowing out of the exhaust duct is discharged into the water in the water storage chamber 14, and the gas forms bubbles on the gas-liquid interface when flowing upward out of the water storage chamber 14, and forms adsorption of water vapor on the surface of the bubbles, so that the free water microclusters in the high-temperature water vapor are adsorbed by the liquid water, reducing the water content of the gas flowing out of the water storage chamber 14, and the bubbles float to the liquid level surface and break, and the gas flows through the space above the liquid level of the water storage chamber 14 to the circulating air supply port 110, thereby realizing the circulation of the gas in the inner tank 200 and the exhaust duct.

[0041] That is, the air duct assembly 100 provided in the present embodiment, by inserting the air outlet end of the exhaust duct into the water storage chamber 14 and positioning it below the liquid surface to form bubbles during the exhaust process of the exhaust duct, reduces the humidity of the gas flowing to the circulating air supply port 110, and improves the drying efficiency of the objects in the inner liner 200; at the same time, since there is no need to set up condensation structures such as condensers, the structure of the air duct assembly 100 is simple, the space occupied is smaller, and the cost is lower; furthermore, since the air duct assembly 100 can realize the circulation of airflow in the inner liner 200 and the exhaust duct, there is no need to add new gas to the inner liner 200, and the internal air pressure of the inner liner 200 will not increase, thereby reducing the probability of gas overflow from the inner liner 200 and improving the safety and reliability of the cleaning equipment.

[0042] It is worth noting that the liquid level of the water storage chamber 14 refers to the liquid level formed by injecting water into the water storage chamber 14 when the air duct assembly is in use. It has a roughly fixed height, but its liquid level height may have slight deviations due to processing errors, assembly errors or usage conditions.

[0043] In order to realize the smooth flow of the gas flowing out of the water storage chamber 14 to the circulating air supply port 110, an air supply chamber 15 is provided inside the housing 1. The air supply chamber 15 is at least partially located on the upper side of the water storage chamber 14, and the circulating air supply port 110 is opened at the bottom of the air supply chamber 15. In this embodiment, the air supply chamber 15 has an upper cavity portion 151 located on the upper side of the water storage chamber 14 and a lower cavity portion 152 located on one side of the water storage chamber 14 along the horizontal direction. The upper cavity portion 151 and the lower cavity portion 152 are connected, and the circulating air supply port 110 is provided on the lower side of the lower cavity portion 152. In other embodiments, the circulating air supply port 110 can also be provided at other positions of the air supply chamber 15.

[0044] It is understandable that the setting position of the circulating air supply port 110 and its relative position to the water storage chamber 14 can be adaptively set according to the positions of the air inlet and the exhaust port on the inner tank 200, and this embodiment does not limit this.

[0045] In this embodiment, an overflow port 120 is provided on the shell 1, and the overflow port 120 is connected to the water storage chamber 14 and the inner tank 200, and the overflow port 120 is higher than the air outlet end of the exhaust air duct. By providing the overflow port 120, when the liquid level of the water in the water storage chamber 14 reaches the height of the overflow port 120, the water in the water storage chamber 14 enters the inner tank 200 through the overflow port 120, thereby preventing the water inside the shell 1 from overflowing to other positions. In this embodiment, the height of the overflow port 120 is approximately equal to the height of the upper open end of the water storage chamber 14. In other embodiments, the height of the overflow port 120 may also be lower than the height of the upper open end of the water storage chamber 14, that is, the overflow port 120 is provided inside the water storage chamber 14.

[0046] In another embodiment, the circulating air supply port 110 is lower than the upper wall of the air supply cavity 15. When the water in the water storage cavity 14 overflows, the water can enter the inner tank 200 through the circulating air supply port 110, thereby draining the excess water in the water storage cavity 14. In another embodiment, a liquid level meter can be provided in the water storage cavity 14 to detect the liquid level in the water storage cavity 14. The amount of water in the water storage cavity 14 is determined by the value detected by the liquid level meter, thereby controlling the amount of water entering the water storage cavity 14.

[0047] Furthermore, the shell 1 has a water inlet chamber 17 inside, and the water inlet chamber 17 and the water storage chamber 14 are arranged side by side in the horizontal direction, and the water inlet chamber 17 and the water storage chamber 14 are separated by a partition member 130, and the water inlet 171 is connected to the water inlet chamber 17. Therefore, when it is necessary to replenish the water storage chamber 14, water enters the water inlet chamber 17 through the water inlet 171, and when the water level in the water inlet chamber 17 reaches the upper end height of the partition member 130, the water flows over the partition member 130 to the water storage chamber 14 to replenish the water storage chamber 14. In other embodiments, the water inlet 171 can also be directly set on the cavity wall of the water storage chamber 14. In this embodiment, the partition member 130 is set higher than the overflow port 120, and preferably, the partition member 130 is set higher than or equal to the overflow port 120.

[0048] In this embodiment, the cleaning device is a dishwasher, and the dishwasher has a water supply assembly 500 for supplying water to the inner tank 200. The water supply assembly 500 is connected to the water inlet 171, so that the water supply assembly 500 supplies water to the water storage chamber 14 through the water inlet 171, and then supplies water to the inner tank 200. That is, in the washing process of the dishwasher, the water supply assembly 500 supplies water to the inner tank 200 through the water inlet 171, the water storage chamber 14 and the overflow port 120, so that while the inner tank 200 is filled with water, the liquid level in the water storage chamber 14 can reach the liquid level of the overflow port 120, simplifying the water inlet structure in the water storage chamber 14, reducing the improvement cost of the cleaning device, and facilitating the replacement of water in the water storage chamber 14 by supplying water to the water inlet 171 through the water supply assembly 500, thereby eliminating the need to set an additional drainage structure for the water storage chamber 14, and further simplifying the structure of the air duct assembly 100.

[0049] It is worth noting that the structural setting of the water supply component 500 can be specifically set with reference to the water supply component 500 in the dishwasher in the prior art. This is not the focus of the present utility model and will not be described in detail here.

[0050] In order to improve the connection convenience between the air duct assembly 100 and the water supply assembly 500, in this embodiment, the housing 1 further has a water inlet pipe portion 11, which is arranged corresponding to the water inlet 171 and communicates with the water supply assembly 500. Furthermore, the water receiving pipe portion is arranged vertically and the upper end is communicated with the water inlet 171, and the lower end of the water receiving pipe portion is connected to the water supply assembly 500.

[0051] In order to facilitate the formation of bubbles when the hot and humid gas is introduced into the water storage chamber 14, in the present embodiment, the outlet direction of the air outlet end of the air exhaust duct is tilted downward so that the air flow out of the air exhaust duct has an upward air volume, which is conducive to the formation of bubbles. Furthermore, the distance between the air outlet end of the air exhaust duct and the liquid surface is 20mm to 60mm, so as to avoid the problem that the air outlet of the air exhaust duct is too close to the liquid surface, resulting in a large amount of gas directly overflowing from the water storage chamber 14 and being difficult to play a dehumidification role. At the same time, it also avoids the problem that the distance between the air outlet end of the air exhaust duct and the liquid surface is too large, resulting in bubbles being easily broken inside the water, and a large number of bubbles cannot be formed on the surface. Preferably, the distance between the air exhaust duct and the overflow port 120 is 20mm to 40mm.

[0052] Furthermore, the end of the air exhaust duct away from the circulating air exhaust port 19 has an air outlet channel portion 132, and the air outlet channel portion 132 is an arc-shaped channel structure, the arc-shaped opening of the air outlet channel portion 132 is tilted upward, and the terminal tangent of the air outlet channel portion 132 is tilted downward, so that the airflow out of the air exhaust duct can be guided to flow above the liquid surface of the water storage chamber 14 through the arc-shaped air outlet channel portion 132, thereby facilitating the formation of bubbles. Preferably, the angle between the terminal tangent of the air outlet channel portion 132 and the horizontal plane is less than 60°, and preferably 10° to 45°.

[0053] The exhaust fan 2 is installed on the housing 1. To improve the installation convenience of the exhaust fan 2, a mounting groove 18 is provided on the housing 1. The groove wall of the mounting groove 18 is provided with an air inlet connection port and an air outlet connection port. The exhaust air duct includes an air inlet channel section 12 and an exhaust channel section 13. The air inlet of the air inlet channel section 12 is connected to the circulating air exhaust port 19. The air outlet of the air inlet channel section 12 is connected to the fan air inlet of the exhaust fan 2 through the air inlet connection port. The fan air outlet of the exhaust fan 2 is connected to the air inlet of the exhaust channel section 13 through the air outlet connection port. The air outlet end of the exhaust channel section 13 is inserted into the water storage cavity 14.

[0054] The exhaust channel section 13 extends from top to bottom to prevent the water in the water storage chamber 14 from flowing to the exhaust fan 2; at the same time, the exhaust channel section 13 extends from top to bottom, which is also conducive to the condensed water formed when the humid hot gas flows through the exhaust channel section 13 to flow downward along the exhaust channel section 13 to the water storage chamber 14, thereby realizing the collection of the condensed water in the exhaust channel section 13.

[0055] Furthermore, a tapered channel portion 131 is formed at least on the upper portion of the exhaust channel section 13, and the upper end of the tapered channel portion 131 is connected to the fan outlet, and the flow area of ​​the tapered channel portion 131 gradually decreases in the direction away from the exhaust fan 2, thereby reducing the flow area of ​​the lower channel of the exhaust duct, avoiding the problem of increased volume requirements for the water storage chamber 14 due to the excessive size of the exhaust end of the exhaust duct, reducing the volume requirements for the water storage chamber 14, and thereby reducing the overall size of the duct assembly 100; furthermore, this arrangement is also conducive to ensuring that the upper end of the exhaust channel section 13 has sufficient space to connect with the fan outlet of the exhaust fan 2.

[0056] In this embodiment, a drain port is provided at the lowest part of the air inlet channel section 12, and a condensed water channel 16 is provided inside the shell 1. The condensed water channel 16 has a tendency to extend from top to bottom, and the upper end of the condensed water channel 16 is connected to the drain port, and the lower end of the condensed water channel 16 is connected to the air supply cavity 15. When the hot and humid gas in the inner tank 200 enters the air inlet channel section 12 through the circulating air extraction port 19, part of the hot and humid gas is condensed to form condensed water. Since the drain port is provided at the lowest part of the air inlet channel section 12, the condensed water in the air inlet channel section 12 converges downward to the drain port, and then flows to the air supply cavity 15 through the condensed water channel 16, and flows into the inner tank 200 through the circulating air supply port 110, so as to realize the collection and discharge of the condensed water inside the shell 1, avoid the condensed water from accumulating inside the air extraction duct to generate odor or other problems, ensure the reliability of the air duct assembly 100, and reduce the cleaning difficulty of the air duct assembly 100.

[0057] Specifically, in this embodiment, the lower end opening of the condensate channel 16 is arranged on the upper cavity wall of the air delivery cavity 15. In order to prevent the gas flowing out of the water storage cavity 14 from entering the interior of the air inlet channel section 12 through the condensate channel 16, the lower end of the condensate channel 16 is staggered with the water storage cavity 14 in the horizontal direction, so that the gas flowing upward from the water storage cavity 14 will collide with the upper cavity wall of the air delivery cavity 15 during the flow process, and then flow to the circulating air delivery port 110 under the guidance of the cavity wall of the air delivery cavity 15.

[0058] Furthermore, the condensate water channel 16 includes a first drainage section 161, the lower end of which is connected to the air supply chamber 15, and the first drainage section 161 flows from bottom to top above the water storage chamber 14, thereby making the flow direction of the airflow when flowing through the lower end of the first drainage section 161 and the extension direction of the first drainage section 161 from bottom to top be set at an obtuse angle, thereby further blocking the probability of the gas in the air supply chamber 15 flowing into the condensate water channel 16, and ensuring that the gas in the air supply chamber 15 basically flows back to the inner tank 200 through the circulating air supply port 110.

[0059] Furthermore, the lower end of the condensate channel 16 is spaced just above the circulating air supply port 110 , so that the condensate dripping from the condensate channel 16 can flow smoothly to the circulating air supply port 110 , avoiding the accumulation of condensate in the lower cavity 152 of the air supply cavity 15 .

[0060] In this embodiment, the width of the condensate channel 16 is 3 mm to 10 mm to prevent the condensate channel 16 from being too wide, causing the gas in the air supply cavity 15 to flow upward to the air intake channel section 12 through the condensate channel 16, and to prevent the condensate channel 16 from being too narrow, affecting the smoothness of condensate discharge.

[0061] The condensation water channel 16 also includes a second drainage section 162, which is connected to the upper side of the first drainage section 161, and the angle between the second drainage section 162 and the vertical direction is smaller than the angle between the first drainage section 161 and the vertical direction, so as to reduce the size of the condensation water channel 16 in the width direction and improve the compactness of the structure.

[0062] Furthermore, the condensate water channel 16 further includes a third drainage section 163 , which is connected between the drainage port and the upper end of the second drainage section 162 , and the third drainage section 163 is arranged at an obtuse angle to the second drainage section 162 .

[0063] In this embodiment, the air inlet channel section 12 is bent to increase the length of the air inlet channel section 12 when the distance between the circulating air extraction port 19 and the fan air inlet remains unchanged, thereby increasing the retention time of the humid hot gas in the air inlet channel section 12, improving the condensation effect of the humid hot gas in the air inlet channel section 12, and improving the dehumidification effect. In other embodiments, the air inlet channel section 12 can also be set straight.

[0064] In this embodiment, the air inlet channel section 12 includes a first section 121, a second section 122 and a third section 123 which are bent and connected in sequence. The first section 121 is arranged upwardly and obliquely from the circulating air extraction port 19 to the first end of the second section 122, the second section 122 is extended downwardly and obliquely from the second end of the first section 121 to the first end of the third section 123, and the third section 123 is arranged upwardly and obliquely from the second end of the second section 122 to the air inlet of the fan, thereby forming a concave structure at the first end of the first section 121 and at the connection between the second section 122 and the third section 123 of the air inlet channel section 12, respectively, and the drain port is arranged at the intersection of the second section 122 and the third section 123. As a result, the condensed water at the first section 121 can directly enter the inner tank 200 through the circulating air extraction port 19, and the condensed water of the second section 122 and the third section 123 can be discharged to the condensed water channel 16 through the drain port, which is conducive to the discharge of the condensed water of the air inlet channel section 12.

[0065] In other embodiments, the air intake passage section 12 may also only include the second section 122 and the third section 123 , and the circulating air extraction port 19 is disposed in the second section 122 .

[0066] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An air duct assembly, characterized in that: include: A shell (1) having an exhaust duct, a water storage chamber (14), a circulating air supply port (110), a circulating air exhaust port (19) and a water inlet (171) therein; the air inlet of the exhaust duct is in communication with the circulating air exhaust port (19); the air outlet of the exhaust duct is in communication with the water storage chamber (14) and is located below the liquid level of the water storage chamber (14), and is spaced apart from the bottom of the water storage chamber (14); the circulating air exhaust port (19) is in communication with the water storage chamber (14) and is located above the liquid level of the water storage chamber (14); the circulating air exhaust port (19) and the circulating air supply port (110) are both used to communicate with an inner tank (200); and the water inlet (171) is used to supply water to the water storage chamber (14); An exhaust fan (2) is mounted on the housing (1) and arranged on the flow path of the fluid in the exhaust duct, and is used to cause the air flow in the exhaust duct to flow from the circulating exhaust port (19) to the water storage chamber (14).

2. The air duct assembly according to claim 1, characterized in that: The exhaust air duct is arranged obliquely downward in the air outlet direction of the air outlet end; And / or, the housing (1) is provided with an overflow port (120), the overflow port (120) is in communication with the water storage chamber (14) and is higher than the air outlet end of the air extraction duct, and the overflow port (120) is used to communicate with the inner container (200); And / or, the shell (1) has a water inlet chamber (17) inside, the water inlet chamber (17) and the water storage chamber (14) are separated in the horizontal direction by a partition component (130), the upper end of the partition component (130) is higher than the air outlet end of the exhaust air duct, and the water inlet (171) is connected to the water inlet chamber (17).

3. The air duct assembly according to claim 2, characterized in that: The exhaust air duct has an exhaust channel portion (132) at one end away from the circulating exhaust port (19); the exhaust channel portion (132) is arranged in an arc shape, and the arc opening of the exhaust channel portion (132) is arranged to be inclined upward, and the end tangent of the exhaust channel portion (132) is arranged to be inclined downward.

4. The air duct assembly according to any one of claims 1 to 3, characterized in that: The shell (1) has an air supply cavity (15) inside, the air supply cavity (15) is at least partially located on the upper side of the water storage cavity (14) and is in communication with the water storage cavity (14), and the circulating air supply port (110) is arranged in the air supply cavity (15); The exhaust air duct comprises an air intake channel section (12) located between the circulating exhaust port (19) and the fan air inlet of the exhaust fan (2), a drain port is provided at the lowest point of the air intake channel section (12), a condensate water channel (16) is provided inside the shell (1), the upper end of the condensate water channel (16) is connected to the drain port, and the lower end of the condensate water channel (16) is connected to the air supply chamber (15).

5. The air duct assembly according to claim 4, characterized in that: The width of the condensate channel (16) is 3 mm to 10 mm; And / or, the lower end of the condensation water channel (16) is offset from the water storage chamber (14) in the horizontal direction.

6. The air duct assembly according to claim 5, characterized in that: The condensate water channel (16) has a first drainage section (161), the lower end of the first drainage section (161) is connected to the air supply cavity (15), and the first drainage section (161) extends obliquely from bottom to top along the upper side of the water storage cavity (14); And / or, the air supply chamber (15) includes an upper chamber portion (151) and a lower chamber portion (152) that are connected, the upper chamber portion (151) is at least partially located above the water storage chamber (14), the lower chamber portion (152) and the water storage chamber (14) are arranged side by side in the horizontal direction, the circulating air outlet (19) is close to the lower side of the lower chamber portion (152), and the lower end of the condensate channel (16) is arranged above the circulating air outlet (19).

7. The air duct assembly according to any one of claims 1 to 3, characterized in that: The exhaust air duct comprises an exhaust channel section (13) located between the fan outlet of the exhaust fan (2) and the water storage chamber (14); the exhaust channel section (13) extends from top to bottom and the lower end is inserted into the water storage chamber (14) and is lower than the liquid level of the water storage chamber (14).

8. The air duct assembly according to claim 7, characterized in that: At least the upper portion of the exhaust channel section (13) is formed with a constricted channel portion (131), and the flow area of ​​the constricted channel portion (131) gradually decreases in a direction away from the exhaust fan (2).

9. A cleaning device, comprising an inner container (200), characterized in that: It also includes the air duct assembly according to any one of claims 1 to 8, wherein the circulating air exhaust port (19) and the circulating air supply port (110) are both connected to the inner tank (200).

10. The cleaning device according to claim 9, characterized in that: The cleaning device is a dishwasher, the water inlet (171) is connected to the water supply assembly (500) of the dishwasher; the shell (1) is provided with an overflow port (120), the overflow port (120) is connected to the water storage chamber (14) and is higher than the air outlet end of the exhaust air duct, and the overflow port (120) is connected to the inner tank (200).

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