Kitchen waste disposal unit

Abstract

This invention discloses a kitchen waste treatment device, comprising an upper shell and a lower shell. The upper shell is provided with an air inlet and an air outlet. The lower shell contains an inner cylinder for containing kitchen waste, with a water filter hole at the bottom. The upper shell contains a heating and air exchange device and a filtering device. The heating and air exchange device includes an inner circulation hood, an exhaust device, and a heating device. An inner circulation cavity is formed inside the inner circulation hood. The exhaust end of the exhaust device communicates with the interior of the inner cylinder, and the exhaust end of the exhaust device is connected to the inlets of the heating device and the filtering device. The outlet of the filtering device communicates with the air outlet. The hot air outlet of the heating device is located within the inner circulation cavity. The inner cylinder is spaced apart from the inner wall of the lower shell, and a mixing cavity is formed on the outer periphery and bottom of the inner cylinder. The inlet of the mixing cavity is connected to the air inlet and the outlet of the circulation cavity. During hot air circulation, the kitchen waste is heated evenly in both the longitudinal and transverse directions, reducing heat loss and significantly improving the drying effect.

Description

Technical Field

[0001] This invention relates to the field of food waste treatment, and more particularly to a food waste treatment device. Background Technology

[0002] To reduce the volume of food waste, prevent excessive microbial growth, and minimize odor, existing food waste treatment methods typically require dehydration of purely liquid food waste and food waste with high water content. Common heating methods include heating the container or supplying hot air into the container to dry the food waste. However, directly heating the container can easily cause the food waste to burn and stick to the inner wall, making the container difficult to clean and prone to uneven heating. Therefore, hot air drying is generally preferred over direct heating.

[0003] Common hot air heating methods mainly involve setting a hot air mechanism at the top of the container. This mechanism continuously blows hot air onto the surface of the food waste, thereby heating and drying it. An exhaust system and / or filter connected to the container are also included to expel excess air. For example, a multi-functional household waste disposer disclosed in utility model patent CN212504636U, where hot air is blown directly onto the surface of the food waste from the top, results in uneven heating of the food waste directly below the hot air, while the heating effect is relatively poor for parts farther away. Furthermore, the hot air from the top has difficulty penetrating the surface of the food waste to reach its interior, leading to overheating of the surface while the interior and bottom of the food waste remain unheated, resulting in poor vertical heating. In addition, some kitchen waste treatment devices are designed with complex exhaust ducts. For example, the utility model patent with authorization announcement number CN221840010U discloses a thermal radiation air internal circulation kitchen waste dryer. On the one hand, this results in a complex internal structure of the machine and excessive space occupation. On the other hand, due to the long duct design, the exhaust power is insufficient, and an additional exhaust device is required to draw the air in the container into the filter for discharge.

[0004] In some existing technologies, the steam outlet is located on the side or bottom of the container. For example, the invention patent with authorization announcement number CN118758003A discloses a top-opening type kitchen waste drying and weight reduction machine. In this dryer, a steam outlet of the water receiving box is provided on the lower side wall of the water receiving box, and the steam at the steam outlet is drawn into the deodorization component through the exhaust component.

[0005] This structure increases the vertical contact between hot air and food waste compared to the above methods, but the filtration and exhaust power is insufficient, requiring additional exhaust / fan devices in addition to the blower. Furthermore, similar to common hot air heating methods, the hot air first contacts the top of the food waste, while the bottom of the food waste contains more moisture. Alternatively, if the container has a water filtration structure, the filtered liquid is usually located at the bottom of the container. When the hot air from the top of the food waste is recovered from the middle, it cannot reach the liquid at the bottom. When the hot air is recovered from the bottom, although it can reach the liquid at the bottom, most of the heat is lost during the contact between the hot air and the food waste. Therefore, the part with more moisture at the bottom and the filtered liquid cannot evaporate moisture effectively. Summary of the Invention

[0006] Therefore, in order to solve the above problems, the present invention provides a kitchen waste treatment device.

[0007] This invention is achieved through the following technical solution:

[0008] A food waste treatment device includes an upper shell and a lower shell. The upper shell has an air inlet and an air outlet. The lower shell contains an inner cylinder for holding food waste. The bottom of the inner cylinder has a water filter hole. The upper shell contains a heating and ventilation device and a filtration device. The heating and ventilation device includes an inner circulation hood, an exhaust device, and a heating device. The inner circulation hood forms an inner circulation chamber. The exhaust end of the exhaust device communicates with the interior of the inner cylinder, and the exhaust end of the exhaust device is connected to the inlets of the heating device and the filtration device, respectively. Part of the air exhausted by the exhaust device enters the filter device, and the other part flows to the heating device for heating. The outlet of the filter device is connected to the air outlet. The hot air outlet of the heating device is located in the inner circulation cavity. The inner cylinder and the inner wall of the lower shell are spaced apart, and a mixing cavity is formed on the outer periphery and bottom of the inner cylinder. The inlet of the mixing cavity is connected to the air inlet and the outlet of the inner circulation cavity, respectively. The external air entering from the air inlet and the hot air in the inner circulation cavity all flow into the mixing cavity and enter the inner cylinder through the water filter hole.

[0009] Preferably, a liner is provided at the bottom of the upper housing, the liner is located between the upper housing and the lower housing, and the liner is provided with a first vent for connecting the inner cylinder and the exhaust end of the exhaust device, a second vent for connecting the air inlet and the mixing chamber, and a third vent for connecting the inner circulation chamber and the mixing chamber.

[0010] Preferably, the bottom of the liner is further provided with a baffle, which covers the top of the opening of the inner cylinder, and the baffle is provided with a clearance hole for avoiding the first vent, which is located at the bottom of the first vent.

[0011] Preferably, the interior of the upper housing is divided into a first cavity and a second cavity by a side plate. The heating and ventilation device is disposed in the first cavity. The air inlet is located at the top of the first cavity. The first vent, the second vent, and the third vent are all located at the bottom of the first cavity. The filter device is disposed in the second cavity. A through hole is also provided at the bottom of the side plate between the second cavity and the first cavity. The through hole communicates with the inlet of the filter device.

[0012] Preferably, the heating and ventilation device further includes a fan mounting base and a heating device mounting base disposed on the top of the fan mounting base. The fan mounting base has openings at both the top and bottom, and its lower end is fixed to the liner plate. The exhaust device is fixed inside the fan mounting base, and the first ventilation port is located at the bottom of the exhaust device. The heating device is a heating coil disposed inside the heating device mounting base. The top of the heating device mounting base is provided with an exhaust hole, which is located inside the inner circulation cavity.

[0013] Preferably, the inner circulation cover is an arched cover disposed outside the heating fixture, the inner circulation cover covers the exhaust hole at the top of the heating fixture, the bottom two ends of the inner circulation cover are respectively fixed to the liner, and the bottom two ends of the inner circulation cover are respectively connected to the third ventilation port.

[0014] Preferably, the fan mounting base is further provided with a flow guiding structure on the side near the filter device. The exhaust device is spaced apart from the flow guiding structure. The flow guiding structure includes a vertical section that is close to the outer side of the filter device. The top of the vertical section bends and extends upward toward the exhaust end of the exhaust device to form a first flow guiding section. The bottom of the vertical section extends into the through hole at the bottom of the side plate to form a second flow guiding section.

[0015] Preferably, a limiting seat for fixing the filter device is also formed in the second cavity. The limiting seat is arranged along the inner circumferential surface of the second cavity. A limiting groove is formed on the limiting seat. A gasket is arranged in the limiting groove. The filter device is installed on the top of the limiting seat. The inlet of the filter device is located at its bottom and communicates with the through hole.

[0016] Preferably, a filter cover is provided on the top of the second cavity, the air outlet is provided on the filter cover, and the filter cover is detachably installed on the upper housing.

[0017] Preferably, a third cavity is further provided inside the upper housing, and an electronic control component is provided inside the third cavity. The electronic control component includes at least a PCB controller and a power switch connected to the PCB controller. The PCB controller is connected to the heating device and the exhaust device respectively through leads.

[0018] The beneficial effects of the technical solution of this invention are mainly reflected in:

[0019] 1. By using reverse hot air circulation in the food waste treatment device, hot air is ensured to enter through the water filter holes at the bottom of the inner cylinder. The exhaust device continuously draws air to create a negative pressure environment in the inner cylinder, thereby enabling the hot airflow to contact and dry the food waste from bottom to top and circulate through the gaps between the food waste. On the one hand, this ensures that the hot air heats the food waste evenly in the vertical direction. On the other hand, the process of hot air being drawn from the bottom of the food waste to the top of the food waste under the negative pressure passively increases the heating time between the hot air and the food waste, further increasing the utilization rate of the hot air.

[0020] 2. A mixing chamber is formed between the inner wall of the inner cylinder and the inner wall of the lower shell. Since the air inlet and the internal circulation chamber are connected to this mixing chamber, both external air and hot air flow into the mixing chamber. Due to the turbulence effect, the hot air is evenly dispersed. Through forced convection, the contact area between the hot air and the surface of the liquid filtered from the kitchen waste collected at the bottom of the mixing chamber can be effectively increased, thereby improving the evaporation efficiency of the liquid. At the same time, since the external air and hot air flow into the mixing chamber, the temperature of the air after the flow is uniform. Then, through the negative pressure, it is evenly drawn into the inner cylinder to heat the kitchen waste and fully exchange heat and mass with the kitchen waste in each area of ​​the inner cylinder. This avoids uneven heating of the kitchen waste due to local hot air accumulation and further ensures the uniformity of heating of the liquid and kitchen waste in the horizontal heating area.

[0021] 3. In the kitchen waste treatment device, the exhaust end of the exhaust device is connected to the inlet of the filter device and the heating device respectively, so that part of the air exhausted by the exhaust device enters the filter device and the other part flows to the heating device for heating. The air entering the filter device does not need to be heated again and flows directly to the filter device, which can reduce heat loss. The hot air heated by the hot air device is precisely guided to the mixing chamber through the internal circulation chamber and re-enters the inner cylinder to heat the kitchen waste. By precisely directing the airflow of each path, heat loss is minimized and drying efficiency is further improved.

[0022] 4. In the food waste treatment device, the air duct system formed by the heating and ventilation device and the mixing chamber, together with the inner cylinder, constitutes a sealed chamber. The exhaust device continuously outputs airflow from the inner cylinder, resulting in a negative pressure environment inside the inner cylinder. This ensures sufficient power for hot air to rise from the bottom of the food waste. At the same time, under the centrifugal force of the exhaust device, the airflow discharged from the exhaust end of the exhaust device has sufficient power to blow towards the inlet of the filter device. In addition, the airflow can be further precisely directed through the guide structure, thereby guiding the airflow to the inlet of the filter device and then discharging it after filtration. Therefore, the entire system only requires one ventilation power device (exhaust device) to achieve synchronous guidance of multiple airflows, without the need to add other ventilation power devices.

[0023] 5. In the kitchen waste treatment device, the reasonable layout of the various devices and accessories inside can form different functional cavities, effectively guide the internal airflow circulation, and achieve precise positioning of each airflow path. At the same time, there is no need to design complex air ducts. On the one hand, it makes reasonable use of the space layout of the entire device, improves the integration of the device, and on the other hand, it reduces additional processing costs. Attached Figure Description

[0024] Figure 1 This is a side view of the food waste processing device;

[0025] Figure 2 yes Figure 1 A sectional view along the middle AA;

[0026] Figure 3 yes Figure 2 Schematic diagram of airflow direction inside and outside the kitchen waste treatment plant;

[0027] Figure 4 yes Figure 3 Enlarged view of section C;

[0028] Figure 5 yes Figure 2 A sectional view along the middle edge BB;

[0029] Figure 6 yes Figure 5 Schematic diagram of airflow direction inside and outside the kitchen waste treatment plant;

[0030] Figure 7 yes Figure 6 Enlarged view of section D;

[0031] Figure 8 This is a top view of the food waste processing device;

[0032] Figure 9 This is a schematic diagram of the liner structure;

[0033] Figure 10This is a bottom view of the upper shell;

[0034] Figure 11 This is an exploded schematic diagram of the heating and ventilation device and its lining.

[0035] Figure 12 This is a structural diagram of the inner cylinders in a split state when there are two inner cylinders.

[0036] Figure 13 This is a schematic diagram showing the state of the inner cylinders stacked inside the lower shell when there are two inner cylinders.

[0037] Figure 14 This is an exploded view of a kitchen waste processing device. Detailed Implementation

[0038] To make the objectives, advantages, and features of the present invention clearer and more detailed, the following non-limiting description of preferred embodiments will be illustrated and explained. These embodiments are merely typical examples of applying the technical solutions of the present invention; all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present invention.

[0039] It should also be noted that in the description of the solution, the terms "center", "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and simplification, 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. Therefore, they should not be construed as limitations on the present invention.

[0040] Furthermore, the terms "first" and "second" in this invention are used for descriptive purposes only and should not be construed as indicating or implying a ranking of importance, or implicitly specifying the number of technical features shown. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] This invention discloses a kitchen waste treatment device, such as... Figure 1 , Figure 2 As shown, it includes an upper shell 1 and a lower shell 2. The upper shell 1 is provided with an air inlet 3 and an air outlet 4. External air enters into the upper shell 1 through the air inlet 3, and the air in the kitchen waste treatment device is discharged through the air outlet 4.

[0042] like Figure 2 As shown, the lower shell 2 is provided with an inner cylinder 5 for containing kitchen waste, and the bottom of the inner cylinder 5 is provided with a water filter hole 502, such as... Figures 12-14As shown, in some embodiments, two or more inner cylinders 5 can be simultaneously installed inside the lower housing 2, thereby facilitating the replacement of different inner cylinders 5 and improving the processing efficiency of kitchen waste. This ensures that the kitchen waste processing device can continue to operate without interruption when cleaning the previously used inner cylinder 5. By reasonably adjusting the size of the inner cylinder 5, multiple inner cylinders 5 can be stacked on top of each other, thereby avoiding space occupation. At the same time, the water filter holes 502 at the bottom of multiple inner cylinders 5 are arranged opposite each other to prevent the water filter holes 502 of the inner cylinder 5 located inside from being blocked. The inner bottom surface of the lower housing 2 A limiting boss 32 is provided on the upper part, and each inner cylinder 5 is provided with a limiting hole 503 that matches the limiting boss 32. The limiting boss 32 and the limiting hole 503 are then fixed in the lower housing 2, which facilitates the disassembly and assembly of the inner cylinder 5. In one embodiment, there are two inner cylinders 5 stacked inside and outside each other. Each of the two inner cylinders 5 is also provided with a handle 501. The handle 501 of the larger inner cylinder 5 is located on the outside of the inner cylinder 5, and the handle 501 of the smaller inner cylinder 5 is located on the inside of the inner cylinder 5, so as to avoid interference between the handles 501.

[0043] like Figures 2-8As shown, the upper housing 1 is equipped with a heating and ventilation device and a filter device 6. The heating and ventilation device includes an inner circulation shroud 7, an exhaust device 8, and a heating device 9. An inner circulation cavity 701 is formed inside the inner circulation shroud 7. The exhaust end of the exhaust device 8 communicates with the interior of the inner cylinder 5, thereby drawing out the air from the inner cylinder 5 and creating a negative pressure environment in the inner cylinder 5. The exhaust end of the exhaust device 8 is connected to the inlet of the heating device 9 and the inlet of the filter device 6, respectively, so that part of the air discharged by the exhaust device 8 enters the filter device 6, and the other part flows... Heating is applied to the heating device 9, and by directional diversion, the reheating of some air / water vapor that needs to be discharged outside the device is avoided, thereby reducing heat loss. The outlet of the filter device 6 is connected to the air outlet 4; therefore, the air entering the filter device 6 is filtered, deodorized, and dehydrated before being discharged outside the device through the air outlet 4. The hot air outlet of the heating device 9 is located within the inner circulation chamber 701. The inner cylinder 5 is spaced apart from the inner wall of the lower shell 2, and a mixing chamber 10 is formed on the outer periphery and bottom of the inner cylinder 5. The inlet of the mixing chamber 10 is connected to both the air inlet 3 and the outlet of the inner circulation chamber 701. External air entering from the air inlet 3 and hot air from the inner circulation chamber 701 converge into the mixing chamber 10 and enter the inner cylinder 5 through the water filter hole 502 at the bottom. Since the outlet of the inner circulation chamber 701 is directly connected to the mixing chamber 10, the hot air heated by the heating device 9 forms directional hot air when entering the mixing chamber 10. Simultaneously, because the inner cylinder 5 is under negative pressure, the mixing chamber 10, which communicates with the inner cylinder 5, is also under negative pressure. The system continuously guides external air into the mixing chamber 10. At this time, the hot air in the mixing chamber 10 and the external air converge in the mixing chamber 10, so that the hot air is evenly dispersed to the liquid surface collected at the bottom of the mixing chamber 10. The hot air accelerates the evaporation of moisture on the surface of the material by forced convection. Subsequently, the hot air and water vapor permeate into the inner cylinder 5 through the water filter hole 502 at the bottom of the inner cylinder 5 and heat the kitchen waste. Affected by the negative pressure environment in the inner cylinder 5, the hot air rises with the pores in the kitchen waste during the heating process, and heats the kitchen waste evenly.

[0044] like Figure 2 , Figure 4 , Figure 7 , Figure 9 , Figure 11As shown, in some embodiments, a liner 11 is provided at the bottom of the upper housing 1. The liner 11 is located between the upper housing 1 and the lower housing 2. Preferably, the liner 11 is fixed to the bottom of the upper housing 1 and is used to support and fix the various components inside the upper housing 1. The liner 11 is respectively provided with a first vent 14 for connecting the inner cylinder 5 and the exhaust end of the exhaust device 8, a second vent 15 for connecting the air inlet 3 and the mixing chamber 10, and a third vent 16 for connecting the inner circulation chamber 701 and the mixing chamber 10, thereby ensuring air circulation between the inner cylinder 5, the hot air exchange device, and the mixing chamber 10, so that the heated air mainly circulates in the heating and ventilation device, the mixing chamber 10, and the inner cylinder 5, thereby shortening the flow path of the hot air and reducing heat loss.

[0045] like Figures 2-8 As shown, in some embodiments, a baffle 12 is also provided at the bottom of the liner 11. The baffle 12 covers the top of the opening of the inner cylinder 5. The baffle 12 is used to cover the inner cylinder 5 to prevent air inside the mixing chamber 10 from entering the inner cylinder 5 from the opening at the top of the inner cylinder 5. On the one hand, it prevents hot air from blowing towards the kitchen waste from the top, resulting in uneven drying of the kitchen waste. On the other hand, by blocking the opening of the inner cylinder 5, it ensures a negative pressure environment in the inner cylinder 5, thereby achieving ventilation. The baffle 12 is provided with a clearance hole for avoiding the first vent 14. The clearance hole is located at the bottom of the first vent 14, thereby preventing the baffle 12 from blocking the first vent 14, so that the exhaust end of the exhaust device 8 continuously draws air from the inner cylinder 5 through the first vent 14.

[0046] like Figures 2-7 as well as Figure 10 As shown, in some embodiments, the interior of the upper housing 1 is divided into a first cavity 27 and a second cavity 28 by a side plate. The heating and ventilation device is disposed in the first cavity 27. The air inlet 3 is located at the top of the first cavity 27. The first vent 14, the second vent 15, and the third vent 16 are all located at the bottom of the first cavity 27. The filter device 6 is disposed in the second cavity 28. A through hole 22 is also provided at the bottom of the side plate between the second cavity 28 and the first cavity 27. The through hole 22 communicates with the inlet of the filter device 6, thereby ensuring that the filter device 6 in the second cavity 28 only enters the air through the through hole 22, which can achieve precise directional air diversion.

[0047] like Figures 2-7 as well as Figure 11 , Figure 14As shown, in some embodiments, the heating and ventilation device further includes a fan mounting base 18 and a heating device mounting base 19 disposed on the top of the fan mounting base 18. The fan mounting base 18 has openings at both the top and bottom, with its lower end fixed to the liner 11. The exhaust device 8 is fixed inside the fan mounting base 18. In one embodiment, the exhaust device 8 is a centrifugal fan, with its exhaust end located at its bottom and its exhaust end located at its top. The first vent 14 is located at the bottom of the exhaust device 8. The heating device 9 is disposed opposite to the exhaust end of the exhaust device 8. In a preferred embodiment, the heating coil is disposed inside the heating device mounting base 19. The heating coil is spaced apart on the top of the exhaust port of the exhaust device 8. The heating device mounting base 19 is a protective cover covering the outside of the heating coil. The top of the heating device mounting base 19 is provided with an exhaust hole 13. The exhaust hole 13 is located inside the inner circulation cavity 701, so that the air heated by the heating coil is directly guided into the inner circulation cavity 701.

[0048] like Figure 2 , Figure 5 As shown, in one embodiment, the heating device 9 further includes a temperature sensor 17, which is fixed in the heating device mounting base 19 and is used to sense the surrounding temperature in real time.

[0049] The fixing methods between the fan mounting base 18 and the liner plate 11, the fixing methods between the exhaust device 8 and the fan mounting base 18, the fixing methods between the heating device mounting base 19 and the fan mounting base 18, and the fixing methods between the heating device 9 and the heating device mounting base 19 can all refer to existing fixing methods, such as mechanical fixing methods like bolts and pins. In addition, when the above structures are fixed together by bolts, a buffer protection structure, such as a rubber sleeve or rubber gasket 26, can also be set simultaneously. This is existing technology and will not be described in detail.

[0050] like Figure 5 , Figure 6 , Figure 11 , Figure 14 As shown, in one embodiment, the inner circulation cover 7 is an arched cover disposed outside the heating fixture. The inner circulation cover 7 covers the exhaust hole 13 at the top of the heating device fixture 19. The bottom two ends of the inner circulation cover 7 are respectively fixed to the liner 11, and the bottom two ends of the inner circulation cover 7 are respectively connected to the third ventilation port 16. Therefore, after the hot air heated by the heating device 9 enters the interior of the inner circulation cover 7 through the exhaust hole 13 at the top, it forms two uniform streams and simultaneously enters the mixing chamber 10 through the third ventilation port 16 at the bottom two ends of the inner circulation cover 7.

[0051] like Figure 3 , Figure 4 , Figure 11 As shown, in a preferred embodiment, the fan mounting base 18 is further provided with a flow guiding structure 20 on the side near the filter device 6. The exhaust device 8 is spaced apart from the flow guiding structure 20, thereby forming a flow guiding channel 21 at the interval between the exhaust device 8 and the flow guiding structure 20. The flow guiding structure 20 includes a vertical section 2001 that is close to the outer side of the filter device 6. The top of the vertical section 2001 bends and extends upward toward the exhaust end of the exhaust device 8 to form a first flow guiding section 2002. The vertical section 2001 extends to the through hole 22 at the bottom of the side plate to guide a portion of the air from the exhaust end of the exhaust device 8 into the guide channel 21 between the exhaust device 8 and the guide structure 20. The bottom of the vertical section 2001 extends into the through hole 22 at the bottom of the side plate and forms a second guide section 2003. The second guide section 2003 is used to guide the air inside the guide channel 21 into the through hole 22. Since the through hole 22 is connected to the inlet of the filter device 6, the air in the guide channel 21 will enter the filter device 6 for deodorization and dehumidification filtration after passing through the through hole 22.

[0052] like Figures 2-6 As shown, in actual operation, the exhaust device 8 is first turned on, continuously drawing air from the inner cylinder 5 to create a negative pressure environment. Simultaneously, the exhaust device 8 directs the drawn air to the guide channel 21 and the heating device 9. Part of the air entering the guide channel 21 is filtered by the filter device 6 and then discharged from the air outlet 4. The air entering the heating device 9 is heated to form hot air, which then enters the inner circulation chamber 701 through the exhaust hole 13. Subsequently, the hot air in the inner circulation chamber 701 enters the mixing chamber 10 through the third vent 16. The mixing chamber 10 is affected by the negative pressure of the inner cylinder 5, and hot air is continuously input into the inner cylinder 5 through the water filter hole 502. At the same time, since the mixing chamber 10 is connected to the air inlet 3, the external air is also affected by the negative pressure and enters the mixing chamber 10 through the second ventilation hole. After merging with the hot air, the hot air is dispersed and the liquid filtered out at the bottom of the mixing chamber 10 is heated evenly. The hot air entering the inner cylinder 5 rises along the pores of the kitchen waste under the negative pressure of the inner cylinder 5, and after evenly heating the kitchen waste, it carries moisture and re-enters the exhaust device 8 through the first ventilation hole 14.

[0053] In one embodiment, the filter device 6 is a carbon box with a filter inlet at its bottom and a filter outlet at its top. Since the air discharged by the exhaust device 8 carries water vapor from the evaporation of kitchen waste, it undergoes preliminary cooling after passing through the guide channel 21 before entering the filter device 6 for moisture absorption and deodorization. This gradient discharge method can reduce the air moisture content from an initial 91.9% to 8.1%.

[0054] like Figures 2-4 as well as Figure 14 As shown, in one embodiment, a retaining seat 25 for fixing the filter device 6 is also formed inside the second cavity 28. The retaining seat 25 is disposed along the inner circumferential surface of the second cavity 28, and a retaining groove is formed on the retaining seat 25. A gasket 26 is disposed in the retaining groove. The gasket 26 is preferably made of a flexible material with elasticity, such as a rubber gasket 26. The filter device 6 is installed on the top of the retaining seat 25, and the inlet of the filter device 6 is located at its bottom. The inlet of the filter device 6 communicates with the through hole 22. The retaining seat 25 is fixed to the bottom edge of the filter device 6 and will not obstruct the inlet of the bottom of the filter device 6. Meanwhile, the filter device 6 is fixed on the limiting seat 25. Therefore, a height gap is formed between the inlet at the bottom of the filter device 6 and the liner 11, thereby ensuring that the air entering the second cavity 28 from the through hole 22 can flow from this gap to the inlet of the filter device 6. In a preferred embodiment, a confluence cavity 23 is formed in the limiting seat 25, and a confluence port 24 communicating with the through hole 22 is provided on the limiting seat 25. The inlet of the filter device 6 is located at the top of the confluence cavity 23. The filter device 6 is a carbon box, and the inlet of the filter device 6 is a filter hole provided at the bottom of the carbon box. The carbon box is filled with activated carbon.

[0055] like Figure 8 , Figure 14 Air vent 4 is disposed on the filter cover plate 36, which is detachably mounted on the upper housing 1, thereby enabling the replacement of the filter device 6. The installation method of the filter cover plate 36 and the upper housing 1 can refer to existing technology, such as snap-fit ​​connection or fixation by setting a limiting mechanism, etc., which will not be elaborated here. When it is necessary to replace the filter device 6, the filter cover plate 36 is opened and the filter device 6 is pressed. Since the gasket 26 at the bottom of the filter device 6 is made of elastic material, the filter device 6 can be removed by rebound after being pressed, which is convenient for cleaning the carbon box or replacing the activated carbon in the carbon box.

[0056] like Figure 2 , Figure 10 , Figure 14As shown, in one embodiment, a third cavity 29 is further provided inside the upper housing 1. An electronic control component is provided inside the third cavity 29. The electronic control component includes at least a PCB controller 30 and a power switch 31 connected to the PCB controller 30. The PCB controller 30 is connected to the heating device 9 and the exhaust device 8 through leads. Specifically, lead holes can be opened on the third cavity 29 to facilitate the entry of leads. The wiring method of the heating device 9 and the exhaust device 8 and the electronic control component can refer to the prior art and will not be described in detail here.

[0057] like Figure 2 , Figure 14 As shown, in a preferred embodiment, an LED light source is provided inside the control unit. The LED light source is fixed on the liner 11. Both the liner 11 and the baffle 12 are provided with LED light clearance holes 35. The LED light source includes an LED lamp 34 and an LED lampshade. The LED lampshade is fixed inside the LED light clearance hole 35, allowing the light beam emitted by the LED lamp 34 to pass through the LED lampshade and illuminate the inner cylinder 5. The lead wire of the LED lamp 34 is connected to the PCB controller 30, allowing the PCB controller 30 to control the start and stop of the LED lamp 34. In addition, as shown... Figure 1 , Figure 3 , Figure 8 , Figure 14 As shown, a viewing window 33 can also be provided between the upper shell 1 and the lower shell 2. Both the baffle 12 and the viewing window 33 are made of transparent material, which allows users to easily observe the drying situation inside the inner cylinder 5 in real time.

[0058] This invention has many other embodiments, and all technical solutions formed by equivalent transformations or equivalent transformations fall within the protection scope of this invention.

Claims

1. A kitchen waste treatment device, comprising an upper shell and a lower shell, wherein the upper shell is provided with an air inlet and an air outlet, and the lower shell contains an inner cylinder for containing kitchen waste, the bottom of which is provided with a water filter hole, characterized in that: The upper housing is equipped with a heating and ventilation device and a filtration device. The heating and ventilation device includes an inner circulation hood, an exhaust device, and a heating device. An inner circulation cavity is formed inside the inner circulation hood. The exhaust end of the exhaust device communicates with the interior of the inner cylinder, and the exhaust end of the exhaust device is connected to the inlets of both the heating device and the filtration device. This allows part of the air exhausted by the exhaust device to enter the filtration device, while the other part flows to the heating device for heating. The outlet of the filtration device communicates with the air outlet. The hot air outlet of the heating device is located within the inner circulation cavity. The inner cylinder and the inner wall of the lower housing are spaced apart. A mixing chamber is formed on the outer periphery and bottom of the inner cylinder. The inlet of the mixing chamber is connected to the air inlet and the outlet of the inner circulation chamber. External air entering from the air inlet and hot air in the inner circulation chamber flow into the mixing chamber and enter the inner cylinder through the water filter hole. A liner is provided at the bottom of the upper shell. The liner is located between the upper shell and the lower shell. The liner is provided with a first vent for connecting the inner cylinder and the exhaust end of the exhaust device, a second vent for connecting the air inlet and the mixing chamber, and a third vent for connecting the inner circulation chamber and the mixing chamber.

2. The kitchen waste treatment device according to claim 1, characterized in that: The bottom of the liner is also provided with a baffle, which covers the top of the opening of the inner cylinder. The baffle is provided with a clearance hole for avoiding the first vent, which is located at the bottom of the first vent.

3. The kitchen waste treatment device according to claim 2, characterized in that: The interior of the upper housing is divided into a first cavity and a second cavity by a side plate. The heating and ventilation device is disposed in the first cavity. The air inlet is located at the top of the first cavity. The first vent, the second vent, and the third vent are all located at the bottom of the first cavity. The filter device is disposed in the second cavity. A through hole is also provided at the bottom of the side plate between the second cavity and the first cavity. The through hole communicates with the inlet of the filter device.

4. The kitchen waste treatment device according to claim 3, characterized in that: The heating and ventilation device further includes a fan mounting base and a heating device mounting base disposed on the top of the fan mounting base. The fan mounting base has openings at both the top and bottom, and its lower end is fixed to the liner plate. The exhaust device is fixed inside the fan mounting base, and the first ventilation port is located at the bottom of the exhaust device. The heating device is a heating coil disposed inside the heating device mounting base. The top of the heating device mounting base is provided with an exhaust hole, which is located inside the inner circulation cavity.

5. The kitchen waste treatment device according to claim 4, characterized in that: The inner circulation cover is an arched cover set outside the heating device mounting base. The inner circulation cover covers the exhaust hole at the top of the heating device mounting base. The bottom two ends of the inner circulation cover are respectively fixed to the liner plate, and the bottom two ends of the inner circulation cover are respectively connected to the third ventilation port.

6. The kitchen waste treatment device according to claim 4, characterized in that: The fan mounting base is also provided with a flow guiding structure on the side near the filter device. The exhaust device is spaced apart from the flow guiding structure. The flow guiding structure includes a vertical section that is close to the outer side of the filter device. The top of the vertical section bends and extends upward toward the exhaust end of the exhaust device to form a first flow guiding section. The bottom of the vertical section extends into the through hole at the bottom of the side plate to form a second flow guiding section.

7. The kitchen waste treatment device according to claim 6, characterized in that: The second cavity also has a retaining seat for fixing the filter device. The retaining seat is arranged along the inner circumferential surface of the second cavity. A retaining groove is formed on the retaining seat. A gasket is arranged in the retaining groove. The filter device is installed on the top of the retaining seat. The inlet of the filter device is located at its bottom and communicates with the through hole.

8. The kitchen waste treatment device according to claim 7, characterized in that: The top of the second cavity is provided with a filter cover plate, the air outlet is provided on the filter cover plate, and the filter cover plate is detachably installed on the upper housing.

9. The kitchen waste treatment device according to claim 3, characterized in that: The upper housing is further provided with a third cavity, and an electronic control component is provided in the third cavity. The electronic control component includes at least a PCB controller and a power switch connected to the PCB controller. The PCB controller is connected to the heating device and the exhaust device through leads.

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