Ventilation device and drying system for kitchen appliances

Abstract

The present invention discloses a ventilation device and a drying system for kitchen appliances, wherein the ventilation device is installed on a cavity, and a diversion cavity, an air inlet channel, a ventilation channel and an air outlet channel are respectively defined in the shell. A controller controls the action of a valve mechanism to connect the air inlet channel with the ventilation channel, thereby introducing external air into the diversion cavity through the air inlet channel, and the air entering the diversion cavity is then transported into the cavity through the ventilation channel, or the air inlet channel, the ventilation channel and the air outlet channel are connected to each other, thereby guiding the gas in the inner tank to the diversion cavity through the ventilation channel, and at the same time introducing external air into the diversion cavity through the air inlet channel so that the external air and the gas in the inner tank are mixed in the diversion cavity, thereby promoting the condensation of water vapor in the internal gas, and then the mixed gas is discharged outward through the air outlet channel. The structure is simple and can effectively improve the drying effect at different positions in the cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a ventilation device and a drying system for kitchen appliances. Background Art

[0002] For dishwashers, in addition to the ability to wash dishes clean, they are also required to be dry after washing. Therefore, the drying capacity can be enhanced by introducing a drying system. Some dishwashers have added heating modules to the air inlet device to blow hot air into the inner tank to further enhance drying.

[0003] In the related art, the air inlets and outlets of most drying systems are set on the side walls of the inner tank, and the blowing direction is fixed. Although it can promote the drying of tableware, bowl baskets, the outer surface of structural parts and the inner tank wall in the inner tank, due to the difference between the windward side and the leeward side, the drying efficiency between the inner and outer sides of the tableware and the tableware located at different positions in the inner tank will still vary, and there is room for further improvement in the overall drying performance. Summary of the Invention

[0004] The present invention aims to solve one of the problems existing in the existing related technologies to at least a certain extent. To this end, the present invention proposes a ventilation device with a simple structure that can effectively improve the drying effect at different positions in the cavity.

[0005] In addition, the present invention also proposes a drying system for a kitchen appliance, which is rationally designed and can form airflows with two different flow directions in the inner tank, thereby effectively improving the drying efficiency and uniformity at different positions in the inner tank.

[0006] The first objective is achieved through the following technical solutions:

[0007] A ventilation device, mounted on a cavity, comprising:

[0008] case;

[0009] a diversion cavity, the diversion cavity being arranged in the shell;

[0010] an air inlet channel, the air inlet channel being arranged in the housing and having an air inlet communicating with the outside, the air inlet channel being communicated with the diversion cavity at one end away from the air inlet;

[0011] a ventilation channel, the ventilation channel being arranged in the shell and having a ventilation opening communicating with the cavity, the ventilation channel being communicated with the diversion cavity at one end away from the ventilation opening;

[0012] an air outlet channel, the air outlet channel being arranged in the housing and having an air outlet communicating with the outside, the air outlet channel being communicated with the diversion cavity at one end away from the air outlet;

[0013] a valve mechanism, the valve mechanism being disposed in the housing to connect the air inlet channel with the ventilation channel, or to connect the air inlet channel, the ventilation channel, and the air outlet channel;

[0014] A controller is electrically connected to the valve mechanism.

[0015] In some embodiments, it also includes a first flow channel, a second flow channel and a third flow channel arranged side by side in the diversion cavity, wherein the bottoms of the first flow channel, the second flow channel and the third flow channel are connected to each other, and the valve plate mechanism is arranged in the shell so that the air inlet channel is connected to the ventilation channel after passing through the second flow channel and the third flow channel in sequence, or the air inlet channel, the first flow channel, the second flow channel, the ventilation channel, the third flow channel and the air outlet channel are connected.

[0016] In some embodiments, the valve plate mechanism includes a first valve plate, a second valve plate, a third valve plate and a drive motor, wherein the air inlet channel and the ventilation channel are arranged side by side, the first valve plate is hinged on one end of the air inlet channel to control the connection and disconnection between the first flow channel and the air inlet channel, the second valve plate is hinged at the connection between the air inlet channel and the ventilation channel to control the connection and disconnection between the second flow channel, the air inlet channel and the ventilation channel, the third valve plate is hinged on one end of the ventilation channel away from the second valve plate to control the connection and disconnection between the third flow channel, the ventilation channel and the air outlet channel, the drive motor is electrically connected to the controller, and the output end of the drive motor is respectively connected to the first valve plate, the second valve plate and the third valve plate.

[0017] In some embodiments, the drive motor is arranged in the shell, and the output end of the drive motor passes through the first valve plate and the second valve plate in sequence and is connected to the third valve plate, or passes through the third valve plate and the second valve plate in sequence and is connected to the first valve plate.

[0018] In some embodiments, the air outlet channel is provided with an air outlet inlet at one end away from the air outlet, and the valve mechanism is provided at the air outlet inlet to open and close the air outlet channel, thereby connecting the first flow channel with the second flow channel, or connecting the first flow channel, the second flow channel, and the third flow channel.

[0019] In some embodiments, the valve plate mechanism includes a driving module electrically connected to the controller and a fourth valve plate, wherein the driving module is arranged in the shell, the fourth valve plate is arranged at the air outlet position and the fourth valve plate is connected to the output end of the driving module.

[0020] In some embodiments, an air intake fan and a ventilation fan electrically connected to the controller respectively are further included, wherein the air intake fan is arranged in the air intake channel, and the ventilation fan is arranged in the ventilation channel.

[0021] In some embodiments, a heater is further included, and the heater is disposed in the air inlet passage to heat the air introduced from the outside.

[0022] The second objective is achieved through the following technical solutions:

[0023] A drying system for a kitchen appliance, the kitchen appliance having an inner container, a hollow cavity defined within the inner container, and comprising a circulation device and / or a ventilation device as described in any of the above embodiments, wherein the circulation device and the ventilation device are respectively provided on opposite sides of the cavity, or one ventilation device is respectively provided on opposite sides of the cavity, and through the joint cooperation of the ventilation device and the circulation device, or through the joint cooperation of the two ventilation devices, two airflows with different flow directions are formed in the inner container.

[0024] In some embodiments, the circulation device includes a circulation pipe, one end of which is connected to the cavity and the other end of which is connected to the outside.

[0025] In some embodiments, the circulation device further includes a flow fan, and the flow fan is disposed inside the circulation duct.

[0026] Compared with the prior art, the present invention has at least the following beneficial effects:

[0027] 1. The ventilation device of the present invention has a simple structure and can effectively improve the drying effect at different positions in the cavity.

[0028] 2. The drying system of the kitchen appliance of the present invention is rationally designed and can form two airflows with different flow directions in the inner tank, thereby effectively improving the drying efficiency and uniformity at different positions in the inner tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of the ventilation device in the air intake mode in the first embodiment of the present invention;

[0030] Figure 2This is a schematic structural diagram of the ventilation device in the air outlet mode in the first embodiment of the present invention;

[0031] Figure 3 is a structural diagram of a drying system for a kitchen appliance in a second embodiment of the present invention;

[0032] Figure 4 is a structural diagram of a drying system for a kitchen appliance in a third embodiment of the present invention;

[0033] Figure 5 Schematic diagram of the structure of the drying system of the kitchen appliance in the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of the technical solutions claimed by the present invention.

[0035] Example 1:

[0036] like Figure 1 and 2 As shown, this embodiment provides a ventilation device installed on the cavity 71, including:

[0037] Shell 1;

[0038] A diverter chamber 2, the diverter chamber 2 is arranged in the housing 1;

[0039] The air inlet channel 3 is arranged in the housing 1 and has an air inlet 31 connected to the outside. The air inlet channel 3 is connected to the diversion cavity 2 at one end away from the air inlet 31;

[0040] The ventilation channel 4 is disposed in the housing 1 and has a ventilation port 41 communicating with the cavity 71 . The ventilation channel 4 is communicated with the diversion cavity 2 at one end away from the ventilation port 41 .

[0041] The air outlet channel 5 is provided in the housing 1 and has an air outlet 51 communicating with the outside. The air outlet channel 5 is communicated with the diversion cavity 2 at one end away from the air outlet 51.

[0042] The valve mechanism 6 is arranged in the housing 1 to connect the air inlet channel 3 with the ventilation channel 4, or to connect the air inlet channel 3, the ventilation channel 4, and the air outlet channel 5;

[0043] The controller is electrically connected to the valve mechanism 6 .

[0044] In this embodiment, the ventilation device 9 is installed on the cavity 71 to introduce external air into the cavity 71 or discharge the gas in the cavity 71 to the outside. The shell 1 is respectively defined with a diversion chamber 2, an air inlet channel 3, a ventilation channel 4 and an air outlet channel 5. The controller controls the action of the valve mechanism 6 to connect the air inlet channel 3 with the ventilation channel 4, thereby introducing external air into the diversion chamber 2 through the air inlet channel 3, and the air entering the diversion chamber 2 is then transported to the cavity 71 through the ventilation channel 4, or the air inlet channel 3, the ventilation channel 4 and the air outlet channel 5 are connected to each other, thereby guiding the gas inside the inner tank 7 to the diversion chamber 2 through the ventilation channel 4, and at the same time, introducing external air into the diversion chamber 2 through the air inlet channel 3 so that the external air and the gas in the inner tank 7 are mixed in the diversion chamber 2, thereby promoting the condensation of water vapor in the internal gas, and then the mixed gas is discharged to the outside through the air outlet channel 5. Its structure is simple and can effectively improve the drying effect at different positions in the cavity 71.

[0045] Preferably, it also includes a first flow channel 21, a second flow channel 22 and a third flow channel 23 arranged side by side in the diversion chamber 2, wherein the bottoms of the first flow channel 21, the second flow channel 22 and the third flow channel 23 are connected to each other, and the valve mechanism 6 is arranged in the shell 1 so that the air inlet channel 3 is connected to the ventilation channel 4 after passing through the second flow channel 22 and the third flow channel 23 in sequence, or the air inlet channel 3, the first flow channel 21, the second flow channel 22, the ventilation channel 4, the third flow channel 23 and the air outlet channel 5 are connected.

[0046] Furthermore, the valve plate mechanism 6 includes a first valve plate 61, a second valve plate 62, a third valve plate 63 and a drive motor 64, wherein the air inlet channel 3 and the ventilation channel 4 are arranged side by side, the first valve plate 61 is hinged on one end of the air inlet channel 3 to control the on-off between the first flow channel 21 and the air inlet channel 3, the second valve plate 62 is hinged at the connection between the air inlet channel 3 and the ventilation channel 4 to control the on-off between the second flow channel 22, the air inlet channel 3, and the ventilation channel 4, the third valve plate 63 is hinged on one end of the ventilation channel 4 away from the second valve plate 62 to control the on-off between the third flow channel 23, the ventilation channel 4, and the air outlet channel 5, the drive motor 64 is electrically connected to the controller, and the output end of the drive motor 64 is respectively connected to the first valve plate 61, the second valve plate 62, and the third valve plate 63.

[0047] Specifically, the drive motor 64 is arranged in the shell 1, and the output end of the drive motor 64 passes through the first valve plate 61 and the second valve plate 62 in sequence and is connected to the third valve plate 63, or passes through the third valve plate 63 and the second valve plate 62 in sequence and is connected to the first valve plate 61.

[0048] In this embodiment, the first flow channel 21, the second flow channel 22 and the third flow channel 23 are arranged side by side in the diverter cavity 2, that is, the first flow channel 21, the second flow channel 22 and the third flow channel 23 are arranged adjacent to each other, and the bottoms of the first flow channel 21, the second flow channel 22 and the third flow channel 23 are connected to each other, so that a connecting position between the first flow channel 21, the second flow channel 22 and the third flow channel 23 is formed at the bottom of the diverter cavity 2, and the tops of the first flow channel 21, the second flow channel 22 and the third flow channel 23 are connected to each other. 3 is arranged side by side with the ventilation channel 4, that is, the air inlet channel 3 and the ventilation channel 4 are arranged adjacent to each other, a first valve plate 61 is hingedly provided at one end of the air inlet channel 3 to control the on-off of the first flow channel 21, and a second valve plate 62 is hingedly provided on the other end of the air inlet channel 3 to control the on-off of the second flow channel 22, that is, the second valve plate 62 is hingedly provided at the intersection of the air inlet channel 3 and the ventilation channel 4, and a third valve plate 63 is hingedly provided on the end of the ventilation channel 4 away from the second valve plate 62 to control the on-off of the third flow channel 23.

[0049] In this embodiment, since the first valve disc 61, the second valve disc 62, and the third valve disc 63 are arranged side by side at the top position of the diversion chamber 2, the drive motor 64 is arranged in the shell 1, and the output end of the drive motor 64 passes through the first valve disc 61 and the second valve disc 62 in sequence and is connected to the third valve disc 63, or passes through the third valve disc 63 and the second valve disc 62 in sequence and is connected to the first valve disc 61, so that the first valve disc 61, the second valve disc 62, and the third valve disc 63 are driven by a single drive motor 64 to flip synchronously. In this embodiment, the output end of the drive motor 64 passes through the first valve disc 61, the second valve disc 62 in sequence and is connected to the third valve disc 63, and the others are not repeated.

[0050] More preferably, when the output end of the drive motor 64 sequentially passes through the first valve disc 61 and the second valve disc 62 and is connected to the third valve disc 63, the drive motor 64 drives the first valve disc 61, the second valve disc 62, and the third valve disc 63 to flip synchronously, thereby enabling the ventilation device 9 to have two operating modes: an air inlet mode and an air outlet mode. When the ventilation device 9 is in the air inlet mode, the first valve disc 61 is actuated to disconnect the pipe between the air inlet channel 3 and the first flow channel 21, the second valve disc 62 is actuated to connect the pipe between the second flow channel 22 and the air inlet channel 3, and the third valve disc 63 is actuated to connect the pipe between the third flow channel 23 and the ventilation channel 4. The third valve disc 63 also opens the pipe between the third flow channel 23 and the air outlet channel 5. In this way, the air inlet channel 3 is connected to the ventilation channel 4 after passing through the second flow channel 22 and the third flow channel 23 in sequence, thereby transporting external air into the cavity 71 through the air inlet channel 3, the second flow channel 22, the third flow channel 23, and the ventilation channel 4 in sequence. In addition, when the ventilation device 9 is in the air outlet mode, the pipe between the air inlet channel 3 and the first flow channel 21 is connected through the action of the first valve plate 61, the pipe between the second flow channel 22 and the ventilation channel 4 is connected through the action of the second valve plate 62, and the pipe between the third flow channel 23 and the air outlet channel 5 is connected through the action of the third valve plate 63. In this way, the air inlet channel 3, the first flow channel 21, the second flow channel 22, the ventilation channel 4, the third flow channel 23, and the air outlet channel 5 can be connected, so that the gas inside the inner tank 7 is guided into the second flow channel 22 through the ventilation channel 4, and at the same time, the external air is introduced into the first flow channel 21 through the air inlet channel 3. Since the bottom of the first flow channel 21 and the bottom of the second flow channel 22 are connected to form a connecting position between the two at the bottom of the diversion chamber 2, the external air and the gas in the inner tank 7 are mixed at the connecting position between the first flow channel 21 and the second flow channel 22, thereby promoting the condensation of water vapor in the internal gas, and then the mixed gas is discharged outward through the air outlet channel 5.

[0051] Furthermore, the air outlet channel 5 is provided with an air outlet inlet 52 at one end away from the air outlet 51, and the valve mechanism 6 is provided at the air outlet inlet 52 to open and close the air outlet channel 5, thereby connecting the first flow channel 21 with the second flow channel 22, or connecting the first flow channel 21, the second flow channel 22, and the third flow channel 23.

[0052] Specifically, the valve mechanism 6 includes a driving module electrically connected to the controller and a fourth valve, wherein the driving module is arranged in the shell 1, the fourth valve is arranged at the air outlet 52 and connected to the output end of the driving module.

[0053] In this embodiment, in order to effectively reduce the production cost of the product, the first flow channel 21, the second flow channel 22, and the third flow channel 23 can be eliminated from the diverter chamber 2. In this way, a fourth valve disc can be provided at the air outlet inlet 52. The fourth valve disc is driven by the driving module to open and close to realize the opening and closing of the air outlet channel 5, so that the ventilation device 9 also has two operating modes: air intake mode and air outlet mode. When the ventilation device 9 is in the air intake mode, the action of the fourth valve disc disconnects the air outlet channel 5. In this way, the air intake channel 3 is connected to the ventilation channel 4 through the diverter chamber 2, thereby transporting the external air into the cavity 71 through the air intake channel 3, the diverter chamber 2, and the ventilation channel 4 in sequence. In addition, when the ventilation device 9 is in the air outlet mode, the air outlet channel 5 is opened by the action of the fourth valve plate, so that the air inlet channel 3, the diverter chamber 2, the ventilation channel 4, and the air outlet channel 5 can be connected, so that the gas inside the inner tank 7 is guided into the diverter chamber 2 through the ventilation channel 4, and at the same time, the external air is introduced into the diverter chamber 2 through the air inlet channel 3 so that the external air and the gas in the inner tank 7 are mixed in the diverter chamber 2, so that the condensation of water vapor in the gas inside the cavity 71 can be promoted, and then the mixed gas is discharged outward through the air outlet channel 5.

[0054] Preferably, it further includes an air intake fan 32 and a ventilation fan 42 electrically connected to the controller respectively, wherein the air intake fan 32 is arranged in the air intake channel 3, and the ventilation fan 42 is arranged in the ventilation channel 4.

[0055] In this embodiment, the air intake fan 32 is arranged in the air intake channel 3. When the air intake fan 32 is in operation, it sucks air from the outside to introduce the external air into the air intake channel 3. The ventilation fan 42 is arranged in the ventilation channel 4. When the ventilation fan 42 is in operation, it sucks air from the inside of the cavity 71 to introduce the gas in the cavity 71 into the ventilation channel 4, thereby completing the exhaust work of the cavity 71. In addition, when the ventilation device 9 is in the air intake mode, the air intake fan 32 draws external air into the air intake channel 3. At this time, the ventilation fan 42 is not working, and the air outlet channel 5 is in a closed state. Therefore, after the external air is drawn into the air intake channel 3, it is transported to the inner tank 7 through the air intake channel 3, the diversion cavity 2, and the ventilation channel 4 in sequence; when the ventilation device 9 is in the air outlet mode, the ventilation fan 42 sucks the internal gas from the cavity 71, and at the same time, the air intake fan 32 draws external air into the air intake channel 3. The external air and the exhaust gas of the cavity 71 are mixed at the connecting position of the first flow channel 21 and the second flow channel 22 to promote the exhaust of the cavity 71 to condense water vapor. After that, the mixed gas is discharged to the outside through the third flow channel 23 and the air outlet channel 5 in sequence.

[0056] In particular, a heater 33 is further included. The heater 33 is disposed in the air inlet passage 3 to heat the air introduced from the outside.

[0057] In this embodiment, the ventilation device 9 is provided with a heater 33 electrically connected to the controller. The heater 33 is preferably arranged in the air inlet channel 3 and is located between the air inlet fan 32 and the diversion chamber 2. When the ventilation device 9 is in the air inlet mode, the air inlet fan 32 is started to work to introduce external air into the air inlet channel 3, and at the same time, the heater 33 is started to heat the air entering the air inlet channel 3, thereby generating hot air, and then the hot air is transported to the cavity 71 through the air inlet channel 3, the diversion chamber 2, and the ventilation channel 4 in turn, thereby effectively improving the drying efficiency and drying effect; in addition, when the ventilation device 9 is in the air outlet mode, the heater 33 is turned off to stop the heater 33 from working. After the external air enters the diversion chamber 2 through the air inlet channel 3, the external air is mixed and condensed with the exhaust gas inside the cavity 71, and then discharged outward through the air outlet channel 5, thereby facilitating the mixing and condensation of the external air and the exhaust gas inside the cavity 71.

[0058] Example 2:

[0059] like Figure 3 As shown, this embodiment provides a drying system for a kitchen appliance, wherein the kitchen appliance has an inner container 7, a hollow cavity 71 is defined inside the inner container 7, and the system includes a circulation device 8 and / or a ventilation device 9 as described in the first embodiment, wherein the circulation device 8 and the ventilation device 9 are respectively provided on opposite sides of the cavity 71, or a ventilation device 9 is respectively provided on opposite sides of the cavity 71, and two airflows with different flow directions are formed in the inner container 7 through the joint cooperation of the ventilation device 9 and the circulation device 8, or through the joint cooperation of the two ventilation devices 9.

[0060] In this embodiment, the drying system is described by taking an example in which a ventilation device 9 is respectively provided on two opposite sides of the cavity 71, and other details are not repeated here. That is, ventilation devices 9 are mirror-imaged on two opposite sides of the cavity 71, and the ventilation devices 9 on both sides of the cavity 71 are electrically connected to the controller respectively. The controller controls the two ventilation devices 9 to execute corresponding working instructions, and through the action of the two ventilation devices 9, two airflows with different flow directions are formed in the inner tank 7. In this way, the difference between the windward side and the leeward side of the tableware can be avoided, which is conducive to drying the tableware between the inner and outer sides of the tableware and at different positions in the inner tank 7, thereby improving the overall drying performance of the dishwasher. Its reasonable design can form two airflows with different flow directions in the inner tank 7, thereby effectively improving the drying efficiency and uniformity at different positions in the inner tank 7.

[0061] In this embodiment, the kitchen appliance is a dishwasher, a disinfection cabinet, a steamer, an oven, a steam oven, a micro steamer, a micro steam oven, or a steam-and-bake combination appliance, but is not limited to the aforementioned devices. Other devices may also be selected based on actual needs. In this embodiment, the kitchen appliance is described using a dishwasher as an example, and other types are not described in detail. In this embodiment, when the kitchen appliance is a dishwasher, the dishwasher may be a floor-standing dishwasher, a tabletop dishwasher, a drawer-type dishwasher, or a sink-type dishwasher. Of course, other types of dishwashers may also be selected based on actual needs. In addition, the dishwasher has an inner liner 7, which defines a hollow cavity 71. Ventilation devices 9 are mirrored on opposite sides of cavity 71, namely, a first ventilation device 9 is provided on the left side of cavity 71, and a second ventilation device 9 is provided on the right side of cavity 71.

[0062] In this embodiment, when the first ventilation device 9 is in the air intake mode, the second ventilation device 9 is in the air outlet mode, that is, after the first ventilation device 9 introduces external air into the cavity 71, the air entering the cavity 71 flows from left to right, and then is discharged outward through the second ventilation device 9; when the first ventilation device 9 is in the air outlet mode, the second ventilation device 9 is in the air intake mode, that is, after the second ventilation device 9 introduces external air into the cavity 71, the air entering the cavity 71 flows from right to left, and then is discharged outward through the first ventilation device 9, so that two airflows with different flow directions can be formed in the inner tank 7.

[0063] Example 3:

[0064] like Figure 4 As shown, this embodiment provides a drying system for a kitchen appliance, wherein the kitchen appliance has an inner container 7, a hollow cavity 71 is defined inside the inner container 7, and the system includes a circulation device 8 and / or a ventilation device 9 as described in the first embodiment, wherein the circulation device 8 and the ventilation device 9 are respectively provided on opposite sides of the cavity 71, or a ventilation device 9 is respectively provided on opposite sides of the cavity 71, and two airflows with different flow directions are formed in the inner container 7 through the joint cooperation of the ventilation device 9 and the circulation device 8, or through the joint cooperation of the two ventilation devices 9.

[0065] Specifically, the circulation device 8 includes a circulation pipe 81 , one end of which is connected to the cavity 71 , and the other end of which is connected to the outside.

[0066] Unlike the second embodiment, the drying system in this embodiment is described by taking the example of a ventilation device 9 and a circulation device 8 provided on opposite sides of the cavity 71, and the rest is not repeated. In addition, the circulation device 8 includes a circulation duct 81, one end of which is connected to the cavity 71 and the other end is connected to the outside. The ventilation device 9 is electrically connected to the controller, and the controller controls the ventilation device 9 to execute corresponding working instructions. Through the joint action of the ventilation device 9 and the circulation device 8, two airflows with different flow directions are formed in the inner tank 7. In this way, the difference between the windward side and the leeward side of the tableware can be avoided, thereby facilitating the drying of the tableware between the inside and outside of the tableware and at different positions in the inner tank 7, thereby improving the overall drying performance of the dishwasher. Its reasonable design can form two airflows with different flow directions in the inner tank 7, thereby effectively improving the drying efficiency and uniformity at different positions in the inner tank 7.

[0067] In this embodiment, a dishwasher is also used as an example for describing the kitchen appliance, and other examples are not described in detail. The dishwasher has an inner container 7 defining a hollow cavity 71. A ventilation device 9 is provided on the left side of the cavity 71, and a circulation device 8 is provided on the right side of the cavity 71.

[0068] In this embodiment, when the ventilation device 9 is in the air intake mode, the circulation device 8 is in the air outlet mode, that is, after the ventilation device 9 introduces external air into the cavity 71, the air entering the cavity 71 flows from left to right, and then is discharged outward through the circulation channel of the circulation device 8; when the ventilation device 9 is in the air outlet mode, the circulation device 8 is in the air intake mode, that is, the ventilation device 9 is started to work, and after the external air is introduced into the cavity 71 through the circulation device 8, the air entering the cavity 71 flows from right to left, and then is discharged outward through the air outlet channel 5 of the ventilation device 9, so that two airflows with different flow directions can be formed in the inner tank 7.

[0069] Example 4:

[0070] like Figure 5 As shown, this embodiment provides a drying system for a kitchen appliance. Similar to the third embodiment, the kitchen appliance is also described using a dishwasher as an example, and other details are omitted. The dishwasher has an inner container 7 defining a hollow cavity 71. A ventilation device 9 is provided on the left side of cavity 71, and a circulation device 8 is provided on the right side of cavity 71.

[0071] Different from the third embodiment, the circulation device 8 further includes a flow fan 82 , which is arranged inside the circulation duct 81 .

[0072] In this embodiment, a flow fan 82 is added to the circulation duct 81. The flow fan 82 is electrically connected to the controller. The controller controls the coordinated operation of the flow fan 82 and the ventilation device 9 to further improve the stability of the drying system. The ventilation device 9 and the circulation device 8 are electrically connected to the controller respectively. The controller controls the ventilation device 9 and the circulation device 8 to execute corresponding working instructions. Through the coordinated operation of the ventilation device 9 and the circulation device 8, two airflows with different flow directions are formed in the inner tank 7. In this way, the tableware can be prevented from being affected by the difference between the windward side and the leeward side, thereby facilitating the drying of the tableware between the inside and outside and at different positions in the inner tank 7, thereby improving the overall drying performance of the dishwasher. Its reasonable design can form two airflows with different flow directions in the inner tank 7, thereby effectively improving the drying efficiency and uniformity at different positions in the inner tank 7.

[0073] In this embodiment, when the ventilation device 9 is in the air intake mode, the circulation device 8 is in the air outlet mode, that is, after the ventilation device 9 introduces external air into the cavity 71, the air entering the cavity 71 flows from left to right, and then is discharged outward through the circulation channel of the circulation device 8; when the ventilation device 9 is in the air outlet mode, the circulation device 8 is in the air intake mode, that is, the circulation device 8 and the ventilation device 9 are started to work at the same time, after the circulation device 8 introduces external air into the cavity 71, the air entering the cavity 71 flows from right to left, and then is discharged outward through the air outlet channel 5 of the ventilation device 9, so that two airflows with different flow directions can be formed in the inner tank 7.

[0074] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A ventilation device, mounted on a cavity (71), characterized in that: include: Housing (1); A diversion chamber (2), the diversion chamber (2) being arranged in the housing (1); an air inlet channel (3), the air inlet channel (3) being arranged in the housing (1) and having an air inlet (31) communicating with the outside, the air inlet channel (3) being communicated with the diversion cavity (2) at an end away from the air inlet (31); a ventilation channel (4), the ventilation channel (4) being arranged in the housing (1) and having a ventilation opening (41) communicating with the cavity (71), the ventilation channel (4) being communicated with the diversion cavity (2) at an end away from the ventilation opening (41); an air outlet channel (5), the air outlet channel (5) being arranged in the housing (1) and having an air outlet (51) communicating with the outside, the air outlet channel (5) being communicated with the diversion cavity (2) at an end away from the air outlet (51); a valve plate mechanism (6), the valve plate mechanism (6) being arranged in the housing (1) to connect the air inlet channel (3) with the ventilation channel (4), or to connect the air inlet channel (3), the ventilation channel (4), and the air outlet channel (5); a controller electrically connected to the valve plate mechanism (6); and further comprising a first flow channel (21), a second flow channel (22), and a third flow channel (23) arranged side by side in the diversion chamber (2), wherein the bottoms of the first flow channel (21), the second flow channel (22), and the third flow channel (23) are interconnected, and the valve plate mechanism (6) is arranged in the housing (1) so that the air inlet channel (3) is connected to the ventilation channel (4) after passing through the second flow channel (22) and the third flow channel (23) in sequence, or so that the air inlet channel (3), the first flow channel (21), the second flow channel (22), the ventilation channel (4), the third flow channel (23), and the air outlet channel (5) are connected; The air outlet channel (5) is provided with an air outlet inlet (52) at one end away from the air outlet (51), and the valve mechanism (6) is provided at the air outlet inlet (52) to open and close the air outlet channel (5), thereby connecting the first flow channel (21) with the second flow channel (22), or connecting the first flow channel (21), the second flow channel (22), and the third flow channel (23); The valve plate mechanism (6) comprises a driving module electrically connected to the controller and a fourth valve plate, wherein the driving module is arranged in the housing (1), the fourth valve plate is arranged at the air outlet inlet (52) and the fourth valve plate is connected to the output end of the driving module.

2. A ventilation device according to claim 1, characterized in that: The valve plate mechanism (6) comprises a first valve plate (61), a second valve plate (62), a third valve plate (63) and a drive motor (64), wherein the air inlet channel (3) and the ventilation channel (4) are arranged side by side, the first valve plate (61) is hinged to one end of the air inlet channel (3) to control the opening and closing between the first flow channel (21) and the air inlet channel (3), and the second valve plate (62) is hinged to the connection between the air inlet channel (3) and the ventilation channel (4) to control the second flow channel (22). , the connection and disconnection between the air inlet channel (3) and the ventilation channel (4), the third valve plate (63) is hinged to the end of the ventilation channel (4) away from the second valve plate (62) to control the connection and disconnection between the third flow channel (23), the ventilation channel (4) and the air outlet channel (5), the driving motor (64) is electrically connected to the controller, and the output end of the driving motor (64) is respectively connected to the first valve plate (61), the second valve plate (62) and the third valve plate (63).

3. A ventilation device according to claim 2, characterized in that: The drive motor (64) is arranged in the housing (1), and the output end of the drive motor (64) sequentially passes through the first valve plate (61) and the second valve plate (62) and is connected to the third valve plate (63), or sequentially passes through the third valve plate (63) and the second valve plate (62) and is connected to the first valve plate (61).

4. A ventilation device according to claim 1, characterized in that: It also includes an air intake fan (32) and a ventilation fan (42) electrically connected to the controller, wherein the air intake fan (32) is arranged in the air intake channel (3), and the ventilation fan (42) is arranged in the ventilation channel (4).

5. A ventilation device according to any one of claims 1 to 4, characterized in that: It also includes a heater (33), which is arranged in the air inlet channel (3) to heat the air introduced from the outside.

6. A drying system for a kitchen appliance, the kitchen appliance comprising an inner container (7), wherein a hollow cavity (71) is defined inside the inner container (7), characterized in that: It comprises a circulation device (8) and / or a ventilation device (9) as described in any one of claims 1 to 5, wherein the circulation device (8) and the ventilation device (9) are respectively arranged on opposite sides of the cavity (71), or one ventilation device (9) is respectively arranged on opposite sides of the cavity (71), and through the joint cooperation of the ventilation device (9) and the circulation device (8), or through the joint cooperation of the two ventilation devices (9), two airflows with different flow directions are formed in the inner tank (7).

7. A drying system for a kitchen appliance according to claim 6, characterized in that: The circulation device (8) comprises a circulation pipe (81), one end of which is connected to the cavity (71) and the other end of which is connected to the outside.

8. The drying system for a kitchen appliance according to claim 7, characterized in that: The circulation device (8) further comprises a flow fan (82), and the flow fan (82) is arranged inside the circulation duct (81).

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