Exhaust device for dishwasher
By designing an exhaust pipe and opening/closing device inside the dishwasher, the problem of poor drying effect caused by high exhaust duct resistance in existing technologies has been solved, achieving a more efficient inner drum drying effect.
Patent Information
- Application Number
- CN202420647901.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-03-29
AI Technical Summary
The existing dishwasher exhaust system is located on the side wall of the inner drum, resulting in a long exhaust duct path, high duct resistance, and limited fan pressure and air volume, which leads to poor drying effect of the inner drum.
Design an exhaust device, including an exhaust pipe and an opening and closing device. One end of the exhaust pipe is connected to a water storage cup, and the other end leads to the outside. The opening and closing device controls the on and off of the exhaust channel. The exhaust inlet is designed in a funnel shape to reduce the accumulation of residual water. Combined with an exhaust fan and a detection element, an effective airflow circulation path is formed.
It improves the drying effect of the dishwasher, avoids the failure of electrical components due to residual water soaking, and overcomes the problems of high airflow resistance and low air volume in narrow spaces, achieving more efficient drying of the inner drum.
Smart Images
Figure CN223930135U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of kitchen appliance technology, and in particular to exhaust devices for dishwashers. Background Technology
[0002] A dishwasher is a device that automatically cleans tableware such as bowls, chopsticks, plates, dishes, knives, and forks. During the cleaning process, a large amount of water vapor is generated, as well as some odors caused by detergent. Therefore, it is necessary to ventilate the dishwasher.
[0003] Existing dishwasher exhaust systems are typically located on the inner wall of the drum. For example, the exhaust vent is located on the side wall or high up in the door. The exhaust duct and exhaust fan are placed in the narrow side wall, resulting in a long exhaust duct path, high duct resistance, and limited fan pressure and air volume, which leads to poor drying effect of the inner drum. Summary of the Invention
[0004] Therefore, it is necessary to provide an exhaust device for dishwashers to address the problem of poor drying effect of the inner drum during the exhaust process.
[0005] An exhaust device for a dishwasher includes an exhaust pipe and an opening / closing device. One end of the exhaust pipe has an exhaust inlet for connecting to a water reservoir in the dishwasher, and the other end has an exhaust outlet communicating with the outside. The exhaust pipe is hollow to form an exhaust channel connecting the exhaust inlet and the exhaust outlet. The opening / closing device is configured to be movably disposed within the exhaust channel between a blocked position and an open position. When the opening / closing device is in the blocked position, the exhaust channel is disconnected; when the opening / closing device is in the open position, the exhaust channel is unobstructed.
[0006] In one embodiment, the exhaust pipe includes a first pipe and a second pipe, the exhaust inlet is located at the end of the first pipe away from the second pipe, and the opening and closing device is movably connected to the first pipe or the second pipe to allow the first pipe and the second pipe to be connected and disconnected. When the opening and closing device is in the open position, the first pipe and the second pipe are connected and the exhaust inlet is unobstructed; when the opening and closing device is in the blocked position, the opening and closing device blocks the exhaust inlet and / or disconnects the first pipe from the second pipe.
[0007] In one embodiment, the first pipe and the second pipe are arranged at an angle, and the circumferential surface of the first pipe has a communication port that connects to the second pipe.
[0008] In one embodiment, the opening and closing device is movably disposed within the first pipe or the second pipe, and when the opening and closing device is in the blocking position, the opening and closing device blocks the communication port.
[0009] In one embodiment, the opening and closing device is movably disposed inside the first pipe, and the peripheral surface of the opening and closing device is provided with a first sealing element that is interference-fitted with the inner wall of the first pipe. When the opening and closing device is in the blocking position, the first sealing element is located on the side of the connecting port close to the exhaust inlet. When the opening and closing device is in the open position, the first sealing element is located on the side of the connecting port away from the exhaust inlet.
[0010] In one embodiment, the exhaust device further includes a drive member for moving the opening and closing device, the drive member being located on the side of the opening and closing device opposite to the exhaust inlet.
[0011] In one embodiment, the circumferential surface of the opening and closing device is provided with a second sealing element that is interference-fitted with the inner wall of the first pipe. When the opening and closing device is in the blocking position and the opening position, the second sealing element is located on the side of the communication port away from the exhaust inlet.
[0012] In one embodiment, the first seal includes a sealing end face facing the exhaust inlet, and the first conduit includes a sealing abutment surface near the exhaust inlet. When the opening / closing device is in the blocking position, the first seal abuts against the sealing abutment surface in the axial direction of the first conduit.
[0013] In one embodiment, the exhaust pipe includes a water storage chamber located at the lower part of the exhaust pipe and capable of storing a set amount of water, the water storage chamber being provided with an overflow outlet for draining water when the water volume exceeds the set amount of water.
[0014] In one embodiment, the exhaust duct includes a base plate at its lowest point, the base plate having a protrusion extending toward the inner wall of the exhaust passage, an overflow port being opened in the protrusion, and the overflow port communicating with the exhaust passage and the outside of the exhaust passage.
[0015] In one embodiment, the exhaust device further includes an exhaust fan located in the exhaust path and used to drive airflow out of the exhaust duct.
[0016] In one embodiment, the exhaust pipe includes an intake pipe and an exhaust pipe spaced apart, the exhaust inlet is opened in the intake pipe, the exhaust outlet is opened in the exhaust pipe, and the exhaust fan connects the intake pipe and the exhaust pipe, and together with the exhaust pipe, defines the exhaust path.
[0017] In one embodiment, the area of the exhaust passage located at the end of the discharge pipe closer to the exhaust fan is A, and the area of the exhaust passage located at the end of the discharge pipe farther from the exhaust fan is a, wherein A > a.
[0018] In one embodiment, the diameter of the exhaust inlet decreases from the outside to the inside.
[0019] In the above solution, by setting an exhaust inlet that can communicate with the water reservoir of the dishwasher, and setting an opening and closing device in the exhaust channel that can control the opening and closing of the exhaust channel, the exhaust device can be directly connected to the water reservoir. This prevents the electrical components from failing due to being soaked in residual water when there is residual water in the water reservoir. Under the condition of ensuring the safe use of the drainage device, an exhaust device that can be installed on the bottom wall of the dishwasher inner tub is provided. It is not affected by the thickness of the inner tub side wall, and overcomes the problem of high airflow resistance and low air volume caused by the exhaust duct and fan in a narrow space, thereby improving the drying effect of the dishwasher. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of a dishwasher according to one embodiment of this application.
[0021] Figure 2 for Figure 1 A schematic diagram of the internal structure of a dishwasher.
[0022] Figure 3 for Figure 1 A schematic diagram of the base structure.
[0023] Figure 4 for Figure 3 A structural diagram of the base from another perspective.
[0024] Figure 5 for Figure 2 A schematic diagram of the exhaust pipe structure.
[0025] Figure 6 for Figure 5 A cross-sectional structural diagram of the exhaust pipe.
[0026] Figure 7 for Figure 6 A schematic diagram of the structure when the exhaust pipe is blocked.
[0027] Figure 8for Figure 6 A schematic diagram of the structure when the exhaust pipe is unobstructed.
[0028] Figure 9 for Figure 6 The diagram shows the installation of the exhaust pipe.
[0029] Explanation of reference numerals in the attached figures:
[0030] 10. Dishwasher; 100. Exhaust device; 110. Exhaust pipe; 111. Exhaust passage; 112. Air intake pipe; 1121. First pipe; 11211. Exhaust inlet; 11212. Connecting port; 1122. Second pipe; 113. Discharge pipe; 1131. Exhaust outlet; 114. Base plate; 1141. Protrusion; 1142. Overflow port; 120. Opening and closing device; 121. First seal; 1211. Sealing end face; 1212. Sealing peripheral surface; 122. Second seal; 130. Drive component; 140. Detection element; 150. Exhaust fan; 200. Inner tank; 210. Washing space; 300. Door; 400. Kickboard; 500. Air intake device; 510. Air inlet; 600. Drainage device; 700. Base; 800. Water storage cup; 810. Return water area. Detailed Implementation
[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0032] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0033] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0035] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0036] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0037] See Figure 1 and Figure 2 , Figure 1 A schematic diagram of the dishwasher 10 is shown. Figure 2A schematic diagram of the internal structure of the dishwasher 10 is shown. The dishwasher 10 includes an inner tub 200 with a washing space 210 and a door 300 that covers the inner tub 200. It also includes a base 700 located below the inner tub 200 and a kick plate 400 connected to the base 700 and located below the door 300. The base 700, the inner tub 200 and the door 300 together enclose the sealed washing space 210.
[0038] like Figure 1 and Figure 2 As shown, in one embodiment, the dishwasher 10 further includes an air intake device 500 for providing drying gas to the washing space 210. The air intake device 500 includes an air inlet 510 communicating with the washing space 210. The air inlet 510 is formed in the peripheral wall of the washing space 210, such as the side wall of the inner tank 200 or the door 300.
[0039] like Figure 2 and Figure 3 As shown, the dishwasher 10 also includes a water reservoir 800, which is located at the bottom of the dishwasher 10. In this embodiment, the water reservoir 800 is located on the upper surface of the base 700, and the water reservoir 800 includes a return water area 810 connected to the washing space 210. During the washing process of the dishwasher 10, after washing and drainage are completed, the dishwasher enters the drying process. At this time, there is water on the dishes and inner walls, which causes a small amount of water to remain in the water reservoir 800 after backflow. Figure 4 As shown, the dishwasher 10 also includes a drain device 600 that communicates with the return water area 810 and is used to drain the residual water in the return water area 810. The drain device 600 can control whether the water storage cup 800 starts to drain water. The drain device 600 may optionally include a drain valve and / or a drain pump.
[0040] Combination Figure 3 As shown, Figure 3 A schematic diagram of the structure of the base 700 of the dishwasher 10 in one embodiment of this application is shown, as follows: Figure 3 The present application provides an exhaust device 100 for a dishwasher 10, which acts on the washing space 210 of the dishwasher 10 to exhaust airflow inside the washing space 210 to the outside. The exhaust device 100 for the dishwasher 10 includes an exhaust pipe 110 and an opening and closing device 120.
[0041] Combination Figure 5 and Figure 6 As shown, Figure 5 A schematic diagram of the structure of the exhaust pipe 110 in one embodiment of this application is shown. Figure 6This diagram shows a cross-sectional view of an exhaust pipe 110 according to an embodiment of this application. One end of the exhaust pipe 110 has an exhaust inlet 11211 for connecting to the water reservoir 800 of the dishwasher 10, and the other end has an exhaust outlet 1131 communicating with the outside. The interior of the exhaust pipe 110 is hollow to form an exhaust channel 111 connecting the exhaust inlet 11211 and the exhaust outlet 1131. Figure 3 As shown, the return water area 810 and the venting channel 111 are connected to form a... Figure 6 The exhaust path indicated by the middle arrow has an exhaust outlet 1131 located at the end of the exhaust channel 111 furthest from the water reservoir 800, connecting it to the outside. The exhaust pipe 110 connects the water reservoir 800 to the outside, forming a loop between the air intake device 500, the washing space 210, the return water area 810, and the exhaust channel 111 of the exhaust device 100, creating an airflow path that sequentially passes through the air intake device 500, the washing space 210, the return water area 810, and the exhaust device 100. The air intake device 500 guides dry airflow from the outside into the washing space 210 and the return water area 810. After flowing through the return water area 810, the dry airflow carries some water vapor, becoming humid air. The exhaust device 100 expels the humid air inside the washing space 210 to the outside, forming a ventilation cycle. During this cycle, the humid air in the return water area 810 is dried, allowing residual water in the water reservoir 800 to be discharged, thereby improving the overall drying effect of the dishwasher 10's washing space 210.
[0042] Combination Figure 7 and Figure 8 , Figure 7 and Figure 8 This illustration shows a structural schematic diagram of an exhaust pipe 110 in two states, on and off, according to one embodiment of this application. In one embodiment, the opening and closing device 120 is configured to be able to... Figure 7 The blocking positions shown and as Figure 8 The opening position shown is movable within the exhaust passage 111, as indicated. Figure 7 As shown, when the opening / closing device 120 is in the blocking position, the exhaust passage 111 is disconnected; as Figure 8 As shown, when the opening and closing device 120 is in the open position, the exhaust passage 111 is unobstructed.
[0043] like Figure 7 As shown, the diameter of the exhaust inlet 11211 decreases from the outside to the inside, that is, it decreases from the end connected to the water storage cup 800 to the end near the opening and closing device 120, forming a funnel-shaped structure. On the one hand, it can increase the area through which the airflow flows when it enters, especially so that the airflow can pass through the bottom of the water storage cup; on the other hand, it can also raise the position of the rear end of the exhaust inlet 11211, reducing the flow of residual water in the water storage cup 800 into the exhaust pipe 110.
[0044] In one embodiment, the exhaust pipe 110 includes a first pipe 1121 and a second pipe 1122. An exhaust inlet 11211 is located at the end of the first pipe 1121 away from the second pipe 1122. An opening and closing device 120 is movably connected to either the first pipe 1121 or the second pipe 1122 so that the first pipe 1121 and the second pipe 1122 can be connected on and off. When the opening and closing device 120 is in the open position, the first pipe 1121 and the second pipe 1122 are connected and the exhaust inlet 11211 is unobstructed, so that the airflow in the washing space 210 flows from the return water area 810 of the water storage cup 800 through the exhaust inlet 11211 to the exhaust channel 111.
[0045] When the opening and closing device 120 is in the blocking position, it blocks the exhaust inlet 11211. In other embodiments, when the opening and closing device 120 is in the blocking position, the connection between the first pipe 1121 and the second pipe 1122 is blocked and disconnected by the opening and closing device 120. Figure 7 In the embodiment shown, when the opening and closing device 120 is in the blocking position, the opening and closing device 120 blocks the exhaust inlet 11211, and at the same time, the connection between the first pipe 1121 and the second pipe 1122 is also blocked.
[0046] In one embodiment, the first pipe 1121 and the second pipe 1122 are arranged at an angle. The circumferential surface of the first pipe 1121 is provided with a connecting port 11212 that communicates with the second pipe 1122. When the opening and closing device 120 is in the open position, the first pipe 1121 and the second pipe 1122 are connected through the connecting port 11212. That is, the airflow in the washing space 210 flows from the return water area 810 of the water storage cup 800 through the exhaust inlet 11211 to the exhaust channel 111 in the first pipe 1121, and then flows through the connecting port 11212 to the exhaust channel 111 of the second pipe 1122.
[0047] like Figure 7 In the illustrated embodiment, the opening / closing device 120 is movably disposed within the first conduit 1121, and when the opening / closing device 120 is in the blocking position, the opening / closing device 120 blocks the connection port 11212. In other embodiments, the opening / closing device 120 may also be movably disposed within the second conduit 1122, and when the opening / closing device 120 is in the blocking position, the opening / closing device 120 blocks the connection port 11212.
[0048] like Figure 7 and Figure 8As shown, in one embodiment, the opening and closing device 120 is movably disposed within the first pipe 1121, and the circumferential surface of the opening and closing device 120 is provided with a first sealing member 121 that is interference-fitted with the inner wall of the first pipe 1121. The first sealing member 121 is radially pressed between the inner wall of the first pipe 1121 and the circumferential surface of the opening and closing device 120. Figure 7 and Figure 8 As shown, the first sealing element 121 includes a sealing peripheral surface 1212 that abuts against the inner wall of the first pipe 1121. The sealing peripheral surface 1212 is provided with a protruding ridge to improve the sealing effect of the first sealing element 121. And as... Figure 7 As shown, when the opening and closing device 120 is in the blocking position, and the first sealing member 121 is located on the side of the connecting port 11212 close to the exhaust inlet 11211, the first sealing member 121 and the inner wall of the first pipe 1121 are sealed, thereby blocking the flow path between the exhaust port and the connecting port 11212, so that the airflow cannot flow from the exhaust inlet 11211 to the connecting port 11212, and thus cannot enter the exhaust channel 111 of the second pipe 1122.
[0049] Understandably, when the opening / closing device 120 moves toward the open position, it gradually moves away from the exhaust inlet 11211, gradually forming a connected exhaust channel 111 between the exhaust inlet 11211 and the connecting port 11212. At this time, the positions of the first sealing member 121 and the connecting port 11212 only need to be different from the blocking position, that is, the first sealing member 121 can... Figure 8 The connection port 11212 is shown in the diagram, but at this time the connection port 11212 is connected to the exhaust inlet 11211. Alternatively, the connection port 11212 can be located on the side away from the exhaust inlet 11211.
[0050] Preferably, when the opening and closing device 120 is in the open position, the first seal 121 is located on the side of the communication port 11212 away from the exhaust inlet 11211, so as to prevent the airflow from flowing across the communication port 11212 toward the end of the opening and closing device 120 away from the exhaust inlet 11211.
[0051] like Figure 7 and Figure 8As shown, in one embodiment, the exhaust device 100 further includes a drive member 130 for driving the opening and closing device 120 to move. The drive member 130 is located on the side of the opening and closing device 120 away from the exhaust inlet 11211. The peripheral surface of the opening and closing device 120 is provided with a second sealing member 122 that is interference-fitted with the inner wall of the first pipe 1121. When the opening and closing device 120 is in the blocked position and the open position, the second sealing member 122 is located on the side of the connecting port 11212 away from the exhaust inlet 11211. This means that when the first sealing member 121 fails, or when the opening and closing device 120 is in the open position, if the stroke length of the first sealing member 121 is insufficient to reach the side of the connecting port 11212 away from the exhaust inlet 11211, the second sealing member 122 is used to isolate the exhaust channel 111 and the drive member 130, so as to prevent the leakage of the high-humidity airflow flowing in the exhaust channel 111 from being detrimental to the drive member 130 and other components provided on the base 700.
[0052] like Figure 7 and Figure 8 As shown, in one embodiment, the first seal 121 further includes a sealing end face 1211 facing the exhaust inlet 11211, and the first pipe 1121 includes a sealing abutment surface for opening the exhaust inlet 11211. When the opening and closing device 120 is in the blocking position, the first seal 121 abuts against the sealing abutment surface in the axial direction of the first pipe 1121, thereby blocking the exhaust inlet 11211 and preventing airflow from entering the first pipe 1121 from the exhaust inlet 11211.
[0053] In one embodiment, the exhaust pipe 110 includes a water storage chamber located at the lower part of the exhaust pipe 110 and capable of storing a set amount of water. The water storage chamber is provided with an overflow port 1142 for draining water outward when the water volume exceeds the set amount, so as to prevent excess water from flowing to the exhaust fan 150 or other electrical components and causing them to malfunction.
[0054] In one embodiment, the exhaust pipe 110 includes a base plate 114 at its lowest point. The base plate 114 has a protrusion 1141 extending toward the inner wall of the exhaust channel 111. Preferably, the height of the protrusion 1141 is not less than 3 mm. The protrusion 1141 has an overflow port 1142. The overflow port 1142 connects the exhaust channel 111 and the outside of the exhaust channel 111, so that when the seal of the first seal 121 fails, the residual water in the water storage cup 800 may flow in through the exhaust channel 111. At this time, the residual water collects on the base plate 114 at the lowest point of the exhaust pipe 110, and when the thickness of the residual water exceeds the protrusion 1141, it flows to the outside from the overflow port 1142, thus preventing the residual water from flowing to the exhaust fan 150 or other electrical components and causing failure.
[0055] In some embodiments, during the drying and storage process of the dishwasher 10, the remaining water in the water storage cup 800 can also be introduced into the exhaust duct 110. At this time, the remaining water accumulates on the bottom plate 114. When the exhaust device 100 starts to exhaust, there is still air flow in the exhaust duct 110 above the remaining water. During the exhaust process, the air flow velocity is fast, which is more conducive to the evaporation of the remaining water.
[0056] As Figure 5 and Figure 6 shown, in one embodiment, the exhaust device 100 further includes an exhaust fan 150. The exhaust fan 150 is located in the exhaust path and is used to drive the air flow in the exhaust duct 110 to be discharged.
[0057] As Figure 5 and Figure 6 shown, in one embodiment, the exhaust duct 110 includes an intake duct 112 and a discharge duct 113 arranged at intervals. In this embodiment, the intake duct 112 is jointly composed of a first duct 1121 and a second duct 1122. An exhaust inlet 11211 is opened in the intake duct 112, and an exhaust outlet 1131 is opened in the discharge duct 113. The exhaust fan 150 connects the intake duct 112 and the discharge duct 113 and jointly defines the exhaust path with the exhaust duct 110.
[0058] Combined with Figure 5 、 Figure 6 and Figure 9 shown, in one embodiment, the area of the exhaust passage 111 at one end of the discharge duct 113 close to the exhaust fan 150 is A, and the area of the exhaust passage 111 at the end of the discharge duct 113 far from the exhaust fan 150 is a, and A > a. The air flow is accelerated through the gradually narrowing exhaust passage 111. In this embodiment, the end of the discharge duct 113 far from the exhaust fan 150 is a flat nozzle-shaped exhaust port, which can effectively increase the exhaust flow velocity, so that the exhaust can be discharged farther. In this embodiment, At this time, the acceleration effect of the discharge duct 113 on the air flow is maximized.
[0059] As Figure 5 、 Figure 7 and Figure 8 shown, in one embodiment, the exhaust device 100 includes a detection element 140. The detection element 140 is used to detect temperature and humidity, and the detection element 140 is located in the exhaust path and can detect the temperature and humidity of the air flow during the exhaust process.
[0060] Preferably, the detection element 140 is an integrated light-sensing humidity and turbidity sensor, such as an integrated light-sensing chip. It can determine whether the water is dirty, clean, or air with different humidity by judging the refractive index of the medium at this location. This can effectively reduce the opening of the water storage cup 800, reduce leakage points, improve detection efficiency, and optimize the space of the base 700.
[0061] In the above solution, by setting an exhaust inlet 11211 that can communicate with the water storage cup 800 of the dishwasher 10, and setting an opening and closing device 120 in the exhaust channel 111 that can control the opening or closing of the exhaust channel 111, the exhaust device 100 can be directly connected to the water storage cup 800, and the electrical components will not fail due to being soaked in residual water when there is residual water in the water storage cup 800. Under the condition of ensuring the safe use of the drainage device 600, an exhaust device 100 that can be installed on the bottom wall of the inner tub 200 of the dishwasher 10 is provided. It is not affected by the thickness of the side wall of the inner tub 200, and overcomes the problem of large air resistance and small air volume caused by the exhaust duct and fan in a narrow space, thereby improving the drying effect of the dishwasher 10.
[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. An exhaust device (100) for a dishwasher (10), characterized in that, The exhaust device (100) for the dishwasher (10) includes: An exhaust pipe (110) is provided at one end for connecting the water reservoir (800) of the dishwasher (10) and at the other end for connecting the exhaust inlet (11211) to the outside. The exhaust pipe (110) is hollow inside to form an exhaust channel (111) connecting the exhaust inlet (11211) and the exhaust outlet (1131). An opening and closing device (120) is configured to be movably disposed inside the exhaust passage (111) between an obstructed position and an open position. When the opening and closing device (120) is in the obstructed position, the exhaust passage (111) is disconnected; when the opening and closing device (120) is in the open position, the exhaust passage (111) is unobstructed.
2. The exhaust device (100) for a dishwasher (10) according to claim 1, characterized in that, The exhaust pipe (110) includes a first pipe (1121) and a second pipe (1122). The exhaust inlet (11211) is located at the end of the first pipe (1121) away from the second pipe (1122). The opening and closing device (120) is movably connected to the first pipe (1121) or the second pipe (1122) so that the first pipe (1121) and the second pipe (1122) can be connected and disconnected. When the opening and closing device (120) is in the open position, the first pipe (1121) and the second pipe (1122) are connected and the exhaust inlet (11211) is unobstructed. When the opening and closing device (120) is in the blocked position, the opening and closing device (120) blocks the exhaust inlet (11211) and / or disconnects the first pipe (1121) from the second pipe (1122).
3. The exhaust device (100) for a dishwasher (10) according to claim 2, characterized in that, The first pipe (1121) and the second pipe (1122) are arranged at an angle, and the circumferential surface of the first pipe (1121) is provided with a communication port (11212) that communicates with the second pipe (1122).
4. The exhaust device (100) for a dishwasher (10) according to claim 3, characterized in that, The opening and closing device (120) is movably disposed within the first pipe (1121) or the second pipe (1122), and when the opening and closing device (120) is located in the blocking position, the opening and closing device (120) blocks the communication port (11212).
5. The exhaust device (100) for a dishwasher (10) according to claim 4, characterized in that, The opening and closing device (120) is movably disposed inside the first pipe (1121), and the peripheral surface of the opening and closing device (120) is provided with a first sealing element (121) that is interference-fitted with the inner wall of the first pipe (1121). When the opening and closing device (120) is in the blocking position, the first sealing element (121) is located on the side of the connecting port (11212) close to the exhaust inlet (11211). When the opening and closing device (120) is in the open position, the first sealing element (121) is located on the side of the connecting port (11212) away from the exhaust inlet (11211).
6. The exhaust device (100) for a dishwasher (10) according to claim 5, characterized in that, The exhaust device (100) further includes a drive member (130) for driving the opening and closing device (120) to move, the drive member (130) being located on the side of the opening and closing device (120) away from the exhaust inlet (11211).
7. The exhaust device (100) for a dishwasher (10) according to claim 6, characterized in that, The circumferential surface of the opening and closing device (120) is provided with a second sealing element (122) that is interference-fitted with the inner wall of the first pipe (1121). When the opening and closing device (120) is in the blocking position and the opening position, the second sealing element (122) is located on the side of the communication port (11212) away from the exhaust port (11211).
8. The exhaust device (100) for a dishwasher (10) according to claim 5, characterized in that, The first seal (121) includes a sealing end face (1211) disposed toward the exhaust inlet (11211), and the first pipe (1121) includes a sealing abutment surface opened near the exhaust inlet (11211). When the opening and closing device (120) is in the blocking position, the first seal (121) abuts against the sealing abutment surface in the axial direction of the first pipe (1121).
9. The exhaust device (100) for a dishwasher (10) according to claim 1, characterized in that, The exhaust pipe (110) includes a water storage chamber located at the lower part of the exhaust pipe (110) and capable of storing a set amount of water. The water storage chamber is provided with an overflow port (1142) for draining water when the amount of water exceeds the set amount of water.
10. The exhaust device (100) for a dishwasher (10) according to claim 9, characterized in that, The exhaust pipe (110) includes a base plate (114) at its lowest point, the base plate (114) having a protrusion (1141) extending toward the inner wall of the exhaust passage (111), an overflow port (1142) being opened in the protrusion (1141), and the overflow port (1142) communicating with the exhaust passage (111) and the outside of the exhaust passage (111).
11. The exhaust device (100) for a dishwasher (10) according to claim 1, characterized in that, The exhaust device (100) further includes an exhaust fan (150) located in the exhaust path and used to drive the airflow in the exhaust pipe (110) out.
12. The exhaust device (100) for a dishwasher (10) according to claim 11, characterized in that, The exhaust pipe (110) includes an intake pipe (112) and an exhaust pipe (113) spaced apart. The exhaust inlet (11211) is located in the intake pipe (112), and the exhaust outlet (1131) is located in the exhaust pipe (113). The exhaust fan (150) connects the intake pipe (112) and the exhaust pipe (113) and together with the exhaust pipe (110) defines the exhaust path.
13. The exhaust device (100) for a dishwasher (10) according to claim 12, characterized in that, The area of the exhaust passage (111) located at the end of the discharge pipe (113) near the exhaust fan (150) is A, and the area of the exhaust passage (111) located at the end of the discharge pipe (113) away from the exhaust fan (150) is a, where A > a.
14. The exhaust device (100) for a dishwasher (10) according to claim 12, characterized in that, The diameter of the exhaust inlet (11211) decreases from the outside to the inside.