A waste gas treatment device for a kitchen waste machine
By introducing air guiding, filtration, sterilization, and cooling mechanisms into the food waste disposer, the problem of excessively high temperature and humidity in the exhaust gas of the food waste disposer has been solved, achieving the drying and sterilization effects of the equipment, improving its service life and user experience, and saving water resources.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BOHANWEI (XIAMEN) ENVIRONMENTAL TECH CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-14
AI Technical Summary
Existing food waste disposers have excessively high exhaust gas temperature and humidity during the crushing, drying, and composting functions, causing the equipment to become damp and moldy, affecting its service life and user experience.
A waste gas treatment device for a food waste disposer was designed, which includes a ventilation, filtration, sterilization and cooling mechanism. It uses an exhaust fan, activated carbon filter, ozone generator and semiconductor cooling chip to reduce the temperature and humidity of the waste gas, and controls the addition of water through a temperature and humidity sensor to achieve effective treatment of the waste gas.
It effectively reduces the temperature and humidity of exhaust gas, prevents bacterial growth, improves equipment lifespan and user experience, saves water resources, and solves equipment problems caused by high temperature and humidity.
Smart Images

Figure CN224485435U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of kitchen waste treatment equipment, specifically to a waste gas treatment device for kitchen waste machines. Background Technology
[0002] Kitchen waste is prone to rotting and emitting foul odors, leading to the emergence of many household food waste disposers on the market. These disposers grind kitchen waste into suitable particles, which are then flushed down the drain, improving convenience and cleanliness for residents. However, the pulverized material can easily get stuck in the pipes, causing blockages, which is quite troublesome.
[0003] Some families now use compost bins or compost machines to compost kitchen waste for proper utilization. This not only effectively solves the pipe blockage problem caused by kitchen waste disposers, but also allows the fertilizer to be used for home gardening, vegetable and fruit cultivation. However, compost bins are slow to compost and produce noticeable odors, making them unsuitable for use in residential buildings. Purchasing a compost machine in conjunction with a kitchen waste disposer is not only costly but also requires significant space. Therefore, kitchen waste processors with crushing, drying, and composting functions are the current research direction for kitchen waste processing machines. However, the introduction of the composting function significantly increases the moisture content in the exhaust gas, and the temperature is also higher. This creates a hot and humid environment that makes the kitchen waste processor prone to mold growth, affecting both its lifespan and user experience.
[0004] Therefore, the research objective of this utility model is to design a waste gas treatment device for kitchen waste disposers that can reduce the temperature and humidity of exhaust gas emissions to ensure service life and user experience. Utility Model Content
[0005] In view of the technical problems existing in the prior art, the present invention provides a waste gas treatment device for a food waste disposer, which can effectively solve the technical problems existing in the prior art.
[0006] The technical solution of this utility model is:
[0007] A waste gas treatment device for a food waste disposer, comprising:
[0008] The air guide mechanism includes an exhaust pipe connecting the air outlet of the mixing tank inside the food waste disposer and the exhaust outlet of the food waste disposer, and an exhaust fan installed in the exhaust pipe for exhausting the exhaust gas inside the mixing tank to the outside of the food waste disposer.
[0009] The filtration mechanism includes at least one deodorizing filter element housed within the exhaust duct;
[0010] A sterilization mechanism is installed inside the exhaust pipe, located behind the exhaust fan, for sterilizing the exhaust gas;
[0011] A cooling mechanism is installed inside the exhaust pipe between the exhaust fan and the sterilization mechanism to reduce the outlet temperature of the exhaust gas and provide a temperature environment for the sterilization mechanism to perform its sterilization operation.
[0012] The exhaust pipe includes an air guide channel and a horizontal guide pipe that are connected vertically at the top and bottom. The filter mechanism, the exhaust fan and the cooling mechanism are installed in the air guide channel, and the sterilization mechanism is installed in the horizontal guide pipe.
[0013] The filtration mechanism includes a first activated carbon filter element that is detachably sleeved on the air inlet end inside the air guide channel, and a second activated carbon filter element installed at the air outlet end of the transverse guide pipe.
[0014] The sterilization mechanism is an ozone generator installed on the outside of the transverse guide tube, and the ozone spray plate of the ozone generator is installed on the top of the inner side of the transverse guide tube.
[0015] The cooling mechanism includes a heat-dispersing component disposed at the end of the air-guiding channel and a semiconductor cooling chip in contact with the heat-dispersing component. The longitudinal section of the heat-dispersing component has a W-shaped structure and is evenly distributed with a number of long air-permeable holes, which cooperate with the long air-permeable holes to form a grid shape.
[0016] A water collection box is provided at the bottom of the cooling mechanism within the air guide channel. The water collection box is connected to the inlet of the water pump through an inlet pipe and a constant flow valve. The outlet of the water pump is connected to a distributor located above the mixing tank through a corresponding pipeline.
[0017] The temperature and humidity sensor at the air outlet of the mixing tank of the food waste disposer will, when the temperature and humidity sensor detects that the humidity is lower than the set range of 50-60%, control the water pump to start adding water to increase the humidity through the control system. When there is no liquid in the water collection box, the water collection box will be disconnected from the mixing tank.
[0018] Advantages of this utility model:
[0019] 1) This utility model improves the exhaust gas treatment device of a kitchen waste machine with crushing, drying and composting functions that only has activated carbon filtration. On the basis of the air guiding mechanism and the filtration mechanism, a sterilization mechanism and a cooling mechanism are added. The exhaust gas that has passed through the air guiding mechanism and the filtration mechanism is sent into the cooling mechanism to reduce the temperature of the exhaust gas. Then, the sterilization mechanism is used to kill harmful bacteria in the exhaust gas, thereby effectively avoiding the growth of bacteria at the exhaust port due to high temperature and high humidity, so as to improve the user experience of the product.
[0020] 2) This utility model further improves the exhaust pipe into a vertically connected air guide channel and a horizontal guide pipe. The sterilization mechanism is installed inside the horizontal guide pipe. After being cooled by the cooling mechanism, the exhaust gas flows into the relatively independent horizontal guide pipe, ensuring that the temperature inside the horizontal guide pipe is at a suitable level. This provides the necessary temperature environment and enclosed space for the ozone generator's sterilization mechanism to operate, ensuring the successful completion of the sterilization process. Furthermore, the cooling mechanism consists of a semiconductor cooling chip and a temperature-dispersing component connected in contact. The temperature-dispersing component has evenly distributed elongated holes to ensure smooth flow of exhaust gas. The temperature-dispersing component effectively conducts and disperses the temperature of the semiconductor cooling chip, ensuring that the exhaust gas can fully contact the temperature-dispersing component for cooling, thereby improving the cooling effect and efficiency.
[0021] 3) The filtration mechanism of this utility model is equipped with two activated carbon filter elements at the front and back. The activated carbon filter element located at the back of the ozone generator can also adsorb the odor of ozone, effectively solving the problem of ozone odor caused by the addition of ozone sterilization, thereby improving the user experience of this utility model.
[0022] 4) This utility model is equipped with a temperature and humidity sensor at the air outlet of the mixing tank of the food waste disposer. When the humidity of the exhaust gas from the mixing tank is lower than the set range of 50-60% by the temperature and humidity sensor, the water pump is activated to add water to the crushed and dried food waste to increase humidity. This allows the condensate generated by the cooling mechanism to be discharged in time, ensuring the dryness of the food waste disposer and improving the service life of the equipment. Furthermore, the cooling mechanism condenses the increased water content in the exhaust gas caused by humidification into liquid water for recycling in the composting process, thereby effectively saving water resources.
[0023] 5) This utility model sets a corresponding constant flow valve between the water collection box and the water pump. When the water pump starts, it simultaneously draws liquid from the water collection box and the water storage tank. When there is no water in the water collection box, the connection between the water collection box and the water pump is disconnected by controlling the constant flow valve. This not only allows the water in the water collection box to be drawn out in time for use, ensuring a dry operating environment in the equipment, but also avoids the problem of turbulence on the flow of exhaust gas when pumping without water. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of the food waste disposer of this utility model.
[0025] Figure 2 This is a schematic diagram of the structure of this utility model.
[0026] Figure 3 for Figure 2 A cross-sectional diagram (i.e., a cross-sectional diagram of the food waste disposer with the lid closed).
[0027] In the attached diagram: 1. Air guide mechanism, 101. Exhaust pipe, 1011. Air guide channel, 1012. Horizontal guide pipe, 102. Exhaust fan, 2. Stirring tank, 3. Filtering mechanism, 301. First activated carbon filter element, 302. Second activated carbon filter element, 4. Sterilization mechanism, 5. Cooling mechanism, 501. Dispersing and heat-conducting component, 502. Semiconductor cooling chip, 6. Water collection box, 7. Water inlet pipe, 8. Constant flow valve, 9. Water pump. Detailed Implementation
[0028] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings:
[0029] refer to Figure 1-3 A waste gas treatment device for a food waste disposer, comprising:
[0030] The air guide mechanism 1 includes an exhaust pipe 101 that connects the air outlet of the mixing tank 2 inside the food waste disposer to the exhaust outlet of the food waste disposer, and an exhaust fan 102 installed in the exhaust pipe 101, for exhausting the exhaust gas inside the mixing tank 2 to the outside of the food waste disposer.
[0031] Filtering mechanism 3 includes at least one deodorizing filter element fitted inside the exhaust pipe 101;
[0032] The sterilization mechanism 4 is installed inside the exhaust pipe 101 and located behind the exhaust fan 102, and is used to sterilize the exhaust gas;
[0033] The cooling mechanism 5 is installed inside the exhaust pipe 101 between the exhaust fan 102 and the sterilization mechanism 4. It is used to reduce the outlet temperature of the exhaust gas and provide a temperature environment for the sterilization mechanism 4 to perform sterilization.
[0034] This invention improves upon the waste gas treatment device of a kitchen waste processor with crushing, drying, and composting functions that only has activated carbon filtration. It adds a sterilization mechanism 4 and a cooling mechanism 5 to the existing air guide mechanism 1 and filter mechanism 3. The waste gas that has passed through the air guide mechanism 1 and filter mechanism 3 is sent into the cooling mechanism 5 to reduce the temperature of the exhaust gas. Then, the sterilization mechanism 4 is used to kill harmful bacteria in the waste gas, thereby effectively preventing bacterial growth at the exhaust port due to high temperature and humidity, thus improving the user experience of the product.
[0035] The exhaust pipe 101 includes an air guide channel 1011 and a horizontal guide pipe 1012 that are vertically connected. The filter mechanism 3, the exhaust fan 102 and the cooling mechanism 5 are installed in the air guide channel 1011, and the sterilization mechanism 4 is installed in the horizontal guide pipe 1012.
[0036] The filtration mechanism 3 includes a first activated carbon filter element 301 that is detachably sleeved on the air inlet end of the air guide channel 1011, and a second activated carbon filter element 302 installed at the air outlet end of the transverse guide pipe 1012.
[0037] The sterilization mechanism 4 is an ozone generator installed on the outside of the transverse conduit 1012, and the ozone spray plate of the ozone generator is installed on the top of the inner side of the transverse conduit 1012.
[0038] The filtration mechanism 3 of this utility model is equipped with two activated carbon filter elements, one at the front and one at the back. The activated carbon filter element located at the back of the ozone generator can also adsorb the odor of ozone, effectively solving the problem of ozone odor caused by the addition of ozone sterilization, thereby improving the user experience of this utility model.
[0039] The cooling mechanism 5 includes a heat-dispersing component 501 disposed at the end of the air-guiding channel 1011 and a semiconductor cooling chip 502 in contact with the heat-dispersing component 501. The heat-dispersing component 501 has a W-shaped cross-section and is evenly distributed with a number of long air-permeable holes, which cooperate with the long air-permeable holes to form a grid.
[0040] This invention further improves the exhaust pipe 101 into a vertically connected air guide channel 1011 and a horizontal guide pipe 1012. The sterilization mechanism 4 is installed inside the horizontal guide pipe 1012. After being cooled by the cooling mechanism 5, the exhaust gas flows into the relatively independent horizontal guide pipe 1012, ensuring that the temperature inside the horizontal guide pipe 1012 is at a suitable temperature. This provides the necessary temperature environment and spatial enclosure for the sterilization mechanism 4 of the ozone generator to operate, ensuring the successful completion of the sterilization process. Furthermore, the cooling mechanism 5 consists of a semiconductor cooling chip 502 and a temperature-dispersing element 501 connected in contact with each other. The temperature-dispersing element 501 has evenly distributed elongated holes to ensure smooth flow of exhaust gas. The temperature-dispersing element effectively conducts and disperses the temperature of the semiconductor cooling chip, ensuring that the exhaust gas can fully contact the temperature-dispersing element for cooling, thereby improving the cooling effect and efficiency.
[0041] A corresponding water collection box 6 is provided at the bottom of the cooling mechanism 5 within the air guiding channel 1011. The water collection box 6 is connected to the inlet of the water pump 9 through a water inlet pipe 7 and a constant flow valve 8. The outlet of the water pump 9 is connected to a distributor located above the mixing tank 2 through a corresponding pipeline.
[0042] When the temperature and humidity sensor at the air outlet of the mixing tank 2 of the food waste disposer detects that the humidity is lower than the set range of 50-60%, the system controls the water pump 9 to start adding water to increase the humidity. When there is no liquid in the water collection box 6, the water collection box 6 is disconnected from the mixing tank 2.
[0043] This invention features a temperature and humidity sensor installed at the air outlet of the mixing tank 2 of the food waste disposer. When the humidity of the exhaust gas from the mixing tank 2 is lower than the set range of 50-60%, the water pump 9 is activated to add water and humidify the pulverized and dried food waste. This ensures that the condensate generated by the cooling mechanism 5 is discharged in a timely manner, thereby maintaining the dryness of the food waste disposer and extending the service life of the equipment. Furthermore, the cooling mechanism 5 condenses the increased water content in the exhaust gas caused by humidification into liquid water, which is then recycled into compost, effectively saving water resources.
[0044] This invention features a constant flow valve 8 between the water collection box 6 and the water pump 9. When the water pump 9 starts, it simultaneously draws liquid from both the water collection box 6 and the water storage tank. When there is no water in the water collection box 6, the constant flow valve 8 controls the disconnection between the water collection box 6 and the water pump 9. This not only allows the water in the water collection box 6 to be promptly removed for use, ensuring a dry operating environment within the equipment, but also avoids turbulence on the flow of exhaust gas when pumping without water.
[0045] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A waste gas treatment device for a food waste disposer, characterized in that, include: The air guide mechanism (1) includes an exhaust pipe (101) connecting the air outlet of the mixing tank (2) inside the food waste disposer and the exhaust port of the food waste disposer, and an exhaust fan (102) installed in the exhaust pipe (101) for exhausting the exhaust gas in the mixing tank (2) to the outside of the food waste disposer. The filtration mechanism (3) includes at least one deodorizing filter element fitted inside the exhaust pipe (101); The sterilization mechanism (4) is installed inside the exhaust pipe (101) and located behind the exhaust fan (102) for sterilizing the exhaust gas; The cooling mechanism (5) is installed in the exhaust pipe (101) between the exhaust fan (102) and the sterilization mechanism (4) to reduce the outlet temperature of the exhaust gas and provide a temperature environment for the sterilization mechanism (4) to perform sterilization.
2. The waste gas treatment device for a food waste disposer according to claim 1, characterized in that, The exhaust pipe (101) includes an air guide channel (1011) and a horizontal guide pipe (1012) that are vertically connected. The filter mechanism (3), the exhaust fan (102) and the cooling mechanism (5) are installed in the air guide channel (1011), and the sterilization mechanism (4) is installed in the horizontal guide pipe (1012).
3. The waste gas treatment device for a food waste disposer according to claim 2, characterized in that, The filtration mechanism (3) includes a first activated carbon filter element (301) detachably sleeved inside the air inlet end of the air guide channel (1011), and a second activated carbon filter element (302) installed at the air outlet end of the transverse guide pipe (1012).
4. The waste gas treatment device for a food waste disposer according to claim 2, characterized in that, The sterilization mechanism (4) is an ozone generator installed on the outside of the transverse guide tube (1012), and the ozone spray plate of the ozone generator is installed on the top of the inner side of the transverse guide tube (1012).
5. The waste gas treatment device for a food waste disposer according to claim 2, characterized in that, The cooling mechanism (5) includes a heat-dispersing component (501) disposed at the end of the air-guiding channel (1011) and a semiconductor cooling chip (502) in contact with the heat-dispersing component (501). The heat-dispersing component (501) has a W-shaped cross-section and is evenly distributed with a number of long air-permeable holes, which cooperate with the long air-permeable holes to form a grid.
6. The waste gas treatment device for a food waste disposer according to claim 2, characterized in that, A corresponding water collection box (6) is provided at the bottom of the cooling mechanism (5) in the air guiding channel (1011). The water collection box (6) is connected to the inlet of the water pump (9) through the water inlet pipe (7) and the constant flow valve (8). The outlet of the water pump (9) is connected to the distributor located above the mixing tank (2) through the corresponding pipeline.
7. The waste gas treatment device for a food waste disposer according to claim 6, characterized in that, The exhaust gas treatment device also includes a temperature and humidity sensor installed at the air outlet of the mixing tank (2). When the temperature and humidity sensor detects that the humidity is lower than the set range of 50-60%, the system controls the water pump (9) to start adding water to increase the humidity. When there is no liquid in the water collection box (6), the water collection box (6) is disconnected from the mixing tank (2).