Water curtain purification device for range hood

Abstract

The utility model discloses a water curtain purification device for a range hood, and belongs to the technical field of kitchen equipment. The device comprises a water supply system, an atomizing nozzle and an outer cover, the outer cover is arranged on the outer side of an air inlet of a fan, and a purification space is formed on the inner side of the outer cover; the atomizing nozzle is arranged at the side part of the purification space and is connected with the water supply system, and water mist is continuously sprayed to form a water curtain in the purification space for adsorbing grease and particulate matters in the flue gas. The bottom of the outer cover is connected with a backflow pipeline for collecting oily sewage; the outer cover comprises water baffles and an annular backflow guide part, a plurality of vent holes are formed in the water baffles, and the atomization nozzles are located between the water baffles. Through the water curtain purification structure, oil smoke is effectively intercepted and purified, the purification efficiency of the range hood is improved, and environmental pollution is reduced.

Description

Technical Field

[0001] This utility model relates to the field of kitchen equipment technology, specifically to a water curtain purification device for range hoods. Background Technology

[0002] Range hoods, as a household appliance designed to optimize the kitchen environment, are usually installed above the stove. Their core function is to efficiently capture and remove cooking fumes and combustion byproducts, including harmful substances that pose a threat to human health, thereby ensuring fresh kitchen air and providing a safer and cleaner cooking space.

[0003] Traditional range hoods work by drawing in cooking fumes through a built-in impeller and discharging them directly outdoors via flues and exhaust pipes. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of environmental pollution caused by exhaust gas from existing range hoods, and to provide a water curtain purification device for range hoods.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] A water curtain purification device for a range hood includes a water supply system, an atomizing nozzle, and an outer cover. The outer cover is configured on the outside of the fan inlet, and its inner side forms a purification space through which flue gas can pass. The atomizing nozzle is configured on the side of the purification space and connected to the water supply system. The atomizing nozzle continuously sprays water mist and forms a water curtain in the purification space to adsorb grease and particulate matter in the flue gas.

[0007] This utility model's water mist purification device can be applied to range hoods, adding a water mist purification function to the range hood's exhaust function. It can efficiently adsorb and purify grease and particulate matter in the fumes. The barrier formed by the water mist effectively intercepts pollutants in the fumes, deeply purifying them and significantly reducing the content of harmful substances in the fumes. This reduces the pollution of the atmospheric environment caused by fume emissions, helps improve air quality, reduces the occurrence of smog and other air pollution phenomena, and provides people with a healthier and more livable living environment.

[0008] Furthermore, it also includes a return pipe, with the bottom of the outer casing connected to the return pipe. Water molecules in the water mist flow into the return pipe along the inner wall of the outer casing under the influence of gravity. This range hood also has a return function, which can collect and discharge water containing grease and particulate matter, making the machine easier to clean and maintain, and reducing the frequency and difficulty of cleaning the range hood.

[0009] Furthermore, the return pipe is provided with a first return branch and a second return branch. The first return branch is connected to the outer casing, and the second return branch is used to connect to the fan drain hole of the range hood. Since some water mist and smoke will enter the fan, the particles in the smoke combine with the water mist inside and are thrown onto the inner wall of the fan casing by the centrifugal force of the impeller. Therefore, providing an oil drain hole on the fan can effectively drain the oil inside the fan through the second return branch.

[0010] Furthermore, the outer casing includes a water baffle and an annular return flow guide. One side of the return flow guide is connected to the fan inlet, and the water baffle is located on the other side, with multiple ventilation holes. In this design, the water baffle ensures smooth passage of flue gas while preventing water mist from splashing directly out of the outer casing, thus improving purification efficiency and safety. Simultaneously, the water mist forms a water curtain on the water baffle. This water curtain not only further intercepts pollutants in the flue gas but also increases the contact area and contact time between the water mist and the flue gas, thereby improving purification efficiency. The formation of the water curtain makes the purification process more continuous and stable, ensuring a good purification effect.

[0011] Furthermore, at least two baffles are provided at intervals, and the atomizing nozzle is located between two adjacent baffles. In this design, since the atomizing nozzle and the airflow form a large angle (usually 90 degrees), this means that the sprayed water mist will not be carried away directly along the airflow direction, but will instead be sprayed onto the baffles on both sides.

[0012] Furthermore, the return flow guide is equipped with a nozzle mounting part, through which the atomizing nozzle is mounted on the inner side of the outer cover. This design sets the water mist spray direction perpendicular to the flue gas flow direction, which can more effectively intercept and adsorb grease and particulate matter in the flue gas, while also helping to balance and stabilize the airflow at the fan inlet. When the flue gas passes through the return flow guide, the vertical water mist can form a uniform barrier, preventing the flue gas from generating eddies or turbulence within the channel, thereby ensuring that the flue gas can pass through the purification space smoothly and orderly, further improving purification efficiency.

[0013] Furthermore, the vent is a flanged hole. This design uses flanged holes for the vent, so when the water mist is sprayed onto the baffle plate, the water droplets will bounce back a second time. This bounce not only increases the contact opportunity between the water mist and the flue gas, but also allows the water droplets to further atomize during the bounce, forming finer, more uniform droplets. These fine droplets can more effectively adsorb grease and particulate matter in the flue gas because they have a larger surface area and more thorough contact with the flue gas. Through the above design, the water mist forms a denser, more uniform atomized layer between the baffle plates. This atomized layer can more effectively intercept and purify pollutants in the flue gas, thereby improving purification efficiency.

[0014] Furthermore, at least three atomizing nozzles are evenly distributed. This design ensures comprehensive water curtain coverage and improves the purification effect.

[0015] Furthermore, the water supply system includes a water tank and a water pump. The water tank is equipped with a water inlet and a water outlet. The nozzle is connected to the water tank through a water supply pipe. The water pump is installed on the water supply pipe. The water inlet is used to connect to an external water supply device.

[0016] Furthermore, the water tank also includes a return port, which is connected to the output end of the return pipe. This allows the water tank, water supply system, and return system to be sequentially connected to form a circulating water circuit, enabling the water in the tank to be recycled multiple times. This eliminates the need to connect to an external water supply device while the range hood is operating; instead, the water can be changed after a period of use, depending on actual conditions. When changing the water, the existing water can be drained through the inlet before adding new water. Alternatively, a separate drain outlet can be provided on the water tank for discharging wastewater.

[0017] Furthermore, the return flow guide includes a first annular portion and a second annular portion. The return flow guide is connected to the fan through the first annular portion. Two baffles are provided, and the two baffles are respectively assembled at one end of the two ends of the second annular portion.

[0018] Furthermore, the return flow guide also includes an inclined connecting portion, wherein the diameter of the second annular portion is set to be larger than that of the first annular portion, and the inclined connecting portion connects the first annular portion and the second annular portion. The structural design of this solution allows a water curtain to form within the second annular portion, and the inclined connecting portion and the first annular portion can compress the airflow and the air velocity at the fan inlet, thereby improving filtration efficiency. Attached Figure Description

[0019] Figure 1 It is a structural breakdown of a range hood. Figure 1 ;

[0020] Figure 2 This is a simplified structural diagram of the circulating water system;

[0021] Figure 3 This is a schematic diagram of the outer casing. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the outer casing. Figure 2 ;

[0023] Figure 5 This is a schematic diagram of the outer casing. Figure 3 ;

[0024] Figure 6 This is a cross-sectional view of the outer casing.

[0025] Figure 7It is a structural breakdown of a range hood. Figure 2 ;

[0026] Label Explanation:

[0027] 10. Body, 11. Fan, 13. Oil leak hole, 15. Air outlet, 16. Air outlet pipe, 17. Air inlet, 2. Water curtain purification device, 31. Water tank, 311. Water inlet, 312. Water outlet, 313. Water supply pipe, 32. Atomizing nozzle, 4. Outer cover, 5. Water baffle, 51. Vent hole, 511. Return guide, 52. First annular part, 521. Inclined connecting part, 522. Second annular part, 523. Nozzle mounting part, 524. Drain hole, 525. Return pipe, 6. First return branch, 61. Second return branch, 62. Detailed Implementation

[0028] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0029] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "horizontal", "inner", and "outer" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and simplifying the description, and does 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, it should not be construed as a limitation of this utility model.

[0030] See Figure 1-7 As shown, this utility model discloses a water mist purification device 2 for a range hood. The range hood includes a body 10, an exhaust system mounted on the body 10, and a water curtain purification device 2. The exhaust system includes an exhaust channel and a fan 11. The fan 11 is mounted on the exhaust channel and is used to draw smoke from the air inlet of the body 10 into the exhaust channel and finally discharge it outdoors through the air outlet 15 of the body 10. The water curtain purification device 2 includes a water supply system, an atomizing nozzle 4, and an outer cover 5. The outer cover 5 is installed on the outside of the inlet of the fan 11, and its inner side forms a purification space through which smoke can pass. The atomizing nozzle 4 is disposed on the side of the purification space and connected to the water supply system. The atomizing nozzle 4 continuously sprays water mist and forms a water curtain in the purification space to adsorb grease and particulate matter in the smoke.

[0031] It also includes a return pipe 6, and the bottom of the outer cover 5 is connected to the return pipe 6 through a drain hole 525. Water molecules in the mist flow into the return pipe 6 along the inner wall of the outer cover 5 under the action of gravity. This range hood also has a return function, which can collect and discharge water containing grease and particulate matter, making the body 10 easier to clean and maintain, and reducing the frequency and difficulty of cleaning the range hood. The bottom of the outer cover 5 is provided with a drain spout, and the outer cover 5 is connected to the return pipe 6 through the drain spout.

[0032] The bottom of the aforementioned fan 11 is provided with an oil drain hole 13. The return pipe 6 is provided with a first return branch 61 and a second return branch 62. It is connected to the outer casing 5 through the first return branch 61 and to the drain hole of the fan 11 through the second return branch 62. Since some water mist and flue gas will enter the inside of the fan 11, the particles in the flue gas combine with the water mist inside and are thrown onto the inner wall of the fan 11 casing by the centrifugal force of the impeller. Therefore, the oil drain hole 13 on the fan 11 can effectively drain the oil inside the fan 11 through the second return branch 62.

[0033] The aforementioned outer casing 5 includes a water baffle 51 and an annular return flow guide 52. One side of the return flow guide 52 is connected to the inlet of the fan 11, and the water baffle 51 is located on the other side. The water baffle 51 is provided with multiple ventilation holes 511. In this design, the water baffle 51 ensures the smooth passage of flue gas while preventing water mist from splashing directly out of the outer casing 5, thus improving purification efficiency and safety. Simultaneously, the water mist forms a water curtain on the water baffle 51. This water curtain not only further intercepts pollutants in the flue gas but also increases the contact area and contact time between the water mist and the flue gas, thereby improving purification efficiency. The formation of the water curtain makes the purification process more continuous and stable, ensuring a good purification effect.

[0034] At least two water baffles 51 are provided at intervals, and the atomizing nozzle 4 is located between two adjacent water baffles 51. In this design, since the atomizing nozzle 4 forms a large angle (usually 90 degrees) with the airflow, the sprayed water mist will not be carried away directly along the airflow direction, but will be sprayed onto the water baffles 51 on both sides.

[0035] The aforementioned return flow guide 52 is equipped with a nozzle mounting part 524, through which the atomizing nozzle 4 is mounted to the inner side of the outer cover 5. This design sets the water mist spray direction perpendicular to the flue gas flow direction, which can more effectively intercept and adsorb grease and particulate matter in the flue gas, while also helping to balance and stabilize the airflow at the inlet of the fan 11. When the flue gas passes through the return flow guide 52, the vertical water mist can form a uniform barrier, preventing the flue gas from generating eddies or turbulence in the channel, thereby ensuring that the flue gas can pass through the purification space smoothly and orderly, further improving purification efficiency.

[0036] The aforementioned vent 511 is a flanged hole. In this design, the vent 511 is a flanged hole, so when water mist is sprayed onto the baffle plate 51, the water droplets will bounce back a second time. This bounce not only increases the contact opportunity between the water mist and the flue gas, but also allows the water droplets to further atomize during the bounce process, forming finer, more uniform water droplets. These fine water droplets can more effectively adsorb grease and particulate matter in the flue gas because they have a larger surface area and more thorough contact with the flue gas. Through the above design, the water mist forms a denser and more uniform atomized layer between the baffle plates 51. This atomized layer can more effectively intercept and purify pollutants in the flue gas, thereby improving purification efficiency.

[0037] The diameter of the aforementioned vent 511 ranges from 3mm to 5mm, and the height of the vent hole is between 2mm and 3mm. Four atomizing nozzles 4 are evenly distributed. This design ensures comprehensive water curtain coverage and improves the purification effect.

[0038] The water supply system includes a water tank 31 and a water pump (not shown in the figure). The water tank 31 is provided with a water inlet 311 and a water outlet 312. The nozzle is connected to the water tank 31 through a water supply pipe 32. The water pump is installed on the water supply pipe 32. The water inlet 311 is used to connect to an external water supply device.

[0039] The water tank 31 also includes a return port 313, which is connected to the output end of the return pipe 6, so that the water tank 31, the water supply system and the return system are connected in sequence to form a circulating water circuit.

[0040] The aforementioned return flow guide 52 includes a first annular portion 521 and a second annular portion 523. The return flow guide 52 is connected to the fan 11 through the first annular portion. Two baffle plates 51 are provided, and the two baffle plates 51 are respectively assembled at one end of the two ends of the second annular portion 523.

[0041] The aforementioned return flow guide 52 also includes an inclined connecting portion 522. The diameter of the second annular portion 523 is set to be larger than that of the first annular portion 521. The inclined connecting portion 522 connects the first annular portion 521 and the second annular portion 523. The structural design of this solution allows the water curtain to be formed within the second annular portion 523. The inclined connecting portion 522 and the first annular portion 521 can compress the airflow and the air velocity at the inlet of the fan 11, thereby improving the filtration efficiency.

[0042] The aforementioned body 10 includes an air outlet duct 16 and an air inlet 17. The fan 11 is located inside the air outlet duct 16, the water tank 31 is located on one side of the upper part of the air inlet 17, and the outer cover 5 is located at the rear end of the fan 11.

[0043] This utility model of a range hood, in addition to its exhaust function, adds a water mist purification function, which can efficiently adsorb and purify grease and particulate matter in the fumes. The barrier formed by the water mist effectively intercepts pollutants in the fumes, improving the cleanliness of the kitchen air.

[0044] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A water curtain purification device (2) for a range hood, characterized in that: The utility model relates to a kind of smoke purification device, including water supply system, atomizing nozzle (4) and cover (5), the cover (5) is used to be arranged in the outside of fan (11) air inlet, its inside forms the purification space that can be passed by flue gas, the atomizing nozzle (4) is arranged in the side of purification space and is connected with water supply system, the atomizing nozzle (4) continuously sprays water mist to make water curtain in purification space.

2. The water curtain purification device (2) according to claim 1, characterized in that: It also includes return pipe (6), the bottom of cover (5) is connected with return pipe (6), water molecules in water mist flow into return pipe (6) along the inner wall of cover (5) under the action of gravity.

3. The water curtain purification device (2) according to claim 2, characterized in that: The return pipe (6) is provided with first return branch (61) and second return branch (62), which is connected with the body of cover (5) through first return branch (61), and is used for connecting with the fan drain hole (525) of extractor hood through second return branch (62).

4. The water curtain scrubber (2) according to claim 1, characterized in that: The cover (5) includes a water baffle (51) and an annular return guide (52), one side of the return guide (52) is connected with the inlet of the fan (11), and the water baffle (51) is arranged on the other side, and the water baffle (51) is provided with a plurality of air holes (511).

5. The water curtain purification device (2) according to claim 4, characterized in that: The water baffle (51) is arranged at intervals and at least two, and the atomizing nozzle (4) is located between two adjacent water baffles (51).

6. The water curtain purification device (2) according to claim 4, characterized in that: The return guide (52) is provided with a nozzle mounting portion (524), and the atomizing nozzle (4) is assembled to the inside of the cover (5) through the mounting portion.

7. The water curtain purification device (2) according to claim 4, characterized in that: The air hole (511) is a flange hole.

8. The water curtain scrubber (2) according to claim 1, characterized in that: The water supply system includes a water tank (31), a water pump, the water tank (31) is provided with a water supplement port (311) and a water outlet (312), the nozzle is connected with the water tank (31) through a water supply pipeline (32), the water pump is arranged on the water supply pipeline (32), and the water supplement port (311) is used for connecting with external water supply equipment.

9. The water curtain purification device (2) according to claim 4, characterized in that: The return guide (52) includes a first annular portion (521) and a second annular portion (523), the return guide (52) is connected with the fan (11) through the first annular portion, the water baffle (51) is provided with two, and one end of the two water baffles (51) is assembled to one end of the second annular portion (523).

10. The water curtain purification device (2) according to claim 9, characterized in that: The return guide (52) further includes an inclined connecting portion (522), the diameter of the second annular portion (523) is greater than that of the first annular portion (521), and the inclined connecting portion (522) is connected between the first annular portion (521) and the second annular portion (523).

Images