Oil smoke treatment device

Abstract

The utility model relates to the technical field of household appliances, in particular to an oil smoke treatment device. The lampblack treatment device comprises a shell, a fan system arranged in the shell and a flow guide device, the shell comprises an air outlet, the flow guide device comprises a flow guide body and a sound absorption layer, the flow guide body can guide gas filtered by the fan system to the air outlet, and the flow guide body is hollow and is provided with sound absorption through holes; the sound absorption layer is arranged on the inner side face of the flow guide body, a part of noise can be absorbed through the sound absorption through holes, the sound absorption layer can further reduce the noise generated when purified gas passes through the flow guide body, and the noise generated in the using process of the oil smoke treatment device can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to an oil fume treatment device. Background Art

[0002] A range hood usually includes a shell and a fan system arranged therein. The shell includes an air inlet and an air outlet. The fan system can purify the oil fumes entering from the air inlet, and the purified gas is discharged from the air outlet. A guide device is also provided downstream of the fan system, which can guide the purified gas to the air outlet. However, existing range hoods are noisy during use.

[0003] Therefore, it is urgent to design a new oil fume treatment device to improve the problem of high noise during use of the range hood. Utility Model Content

[0004] The utility model aims to provide an oil fume treatment device which can effectively reduce the noise during use.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A fume treatment device includes a housing and a fan system arranged therein, wherein the housing includes an air outlet, and the fume treatment device further includes:

[0007] The flow guide device comprises a flow guide body and a sound absorbing layer. The flow guide body can guide the gas filtered by the fan system to the air outlet. The flow guide body is hollow and has sound absorbing through holes. The sound absorbing layer is arranged on the inner side of the flow guide body.

[0008] As an optional solution, the sound absorbing layer is made of a sound absorbing material, and the sound absorbing material is organic fiber, inorganic fiber, inorganic foam or foam plastic; and / or

[0009] The sound absorbing layer is one layer or at least two layers; when the sound absorbing layer is at least two layers, the at least two layers of the sound absorbing layer are sequentially arranged in abutment with each other along the thickness direction of the flow guide body; and / or

[0010] The sound absorbing layer includes a first limiting member, the guide body includes a second limiting member, and the first limiting member and the second limiting member are matched with each other in a concave-convex manner; and / or

[0011] The cross section of the sound-absorbing through hole is circular or polygonal; and / or

[0012] There are multiple sound-absorbing through holes, and the multiple sound-absorbing through holes are arranged in an array.

[0013] As an optional solution, the flow guide device includes a flow guide cone, and the flow guide cone includes:

[0014] A guide cone body, on which a first sound-absorbing through hole is formed, and the outer contour area of ​​the cross section of the guide cone body gradually decreases along the flow direction of the oil smoke; and

[0015] The first sound absorbing layer is arranged on the inner side surface of the guide cone body.

[0016] As an optional solution, the shell also includes a first baffle, which is arranged in the inner cavity of the shell and has a through hole. The diversion device includes a diversion hopper, one end of the diversion hopper is connected to the through hole, and the other end of the diversion hopper is connected to the air outlet. The shell, the first baffle and the diversion hopper together constitute a silencer cavity.

[0017] As an optional solution, the guide bucket includes:

[0018] The guide hopper body is tubular and has a second sound-absorbing through hole, and the inner diameter of the guide hopper body gradually decreases along the flow direction of the oil smoke;

[0019] The second sound absorbing layer is arranged on the inner side of the guide scoop body.

[0020] As an optional solution, the fan system includes:

[0021] a fan having an air inlet; and

[0022] A second baffle is provided with a smoke inlet, the second baffle is arranged in the outer shell and divides the inner cavity of the outer shell into a connecting cavity and a sealed cavity, the outer shell includes an air inlet, the air inlet, the connecting cavity, the smoke inlet, the air inlet, the sealed cavity and the air outlet are sequentially connected along the flow direction of the oil smoke, and the fan is arranged in the sealed cavity.

[0023] As an optional solution, the fan includes:

[0024] a first motor; and

[0025] The impeller assembly, the first motor can drive the impeller assembly to rotate, the impeller assembly includes a wheel disc, a wheel cover, and multiple blades, the air inlet is opened on the wheel cover, the wheel cover and the wheel disc are arranged at intervals along the flow direction of the oil smoke, and the multiple blades are arranged between the wheel disc and the wheel cover and arranged at intervals along the circumference of the wheel disc.

[0026] As an optional solution, the second baffle includes:

[0027] A baffle body, on which a smoke inlet is formed, and an outer peripheral surface of the baffle body is in sealing contact with an inner wall of the shell; and

[0028] The guide piece is formed by extending the smoke inlet toward the flow direction of the oil smoke, and the guide piece can guide the oil smoke at the smoke inlet into the air inlet.

[0029] As an optional solution, the flow guide is a first annular structure, and the inner diameter of the first annular structure gradually decreases along the flow direction of the oil smoke; and / or

[0030] The air inlet is arranged on the wheel cover, and the wheel cover is a second annular structure. Along the flow direction of the oil smoke, the inner diameter of the second annular structure gradually increases.

[0031] As an optional solution, the air guide is plugged into the wheel cover.

[0032] Beneficial effects of the utility model:

[0033] The oil fume treatment device provided by the utility model comprises an outer shell, a fan system and a guide device arranged therein, the outer shell comprises an air outlet, the guide device comprises a guide body and a sound absorbing layer, the guide body can guide the gas filtered by the fan system to the air outlet, the guide body is hollow and has a sound absorbing through hole, the sound absorbing layer is arranged on the inner side of the guide body, the setting of the sound absorbing through hole can absorb part of the noise, the sound absorbing layer can further reduce the noise of the purified gas when passing through the guide body, and can effectively reduce the noise of the oil fume treatment device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a sectional side view of the oil fume treatment device provided by an embodiment of the utility model;

[0035] Figure 2 is a cross-sectional view of the oil fume treatment device provided by an embodiment of the utility model;

[0036] Figure 3 is a cross-sectional view of a guide cone provided by an embodiment of the utility model;

[0037] Figure 4 is a cross-sectional view of a guide bucket provided by an embodiment of the utility model;

[0038] Figure 5 yes Figure 3 A partial enlarged view of the middle A;

[0039] Figure 6 yes Figure 4 A partial enlarged view of point B in the middle;

[0040] Figure 7 It is a structural schematic diagram of a fan system and a guide cone provided in an embodiment of the utility model.

[0041] In the figure:

[0042] 100. Fume treatment device;

[0043] 10. housing; 11. main chassis; 111. accommodating cavity; 1111. communicating cavity; 1112. sealing cavity; 112. muffler cavity; 113. air outlet; 12. smoke collecting cavity body; 121. air inlet; 122. smoke collecting cavity; 13. first baffle; 131. through hole;

[0044] 20. fan system; 21. fan; 211. first motor; 212. impeller assembly; 2121. wheel disc; 2122. wheel cover; 21221. air inlet; 2123. blades; 215. mounting frame; 2151. first mounting lug; 22. second baffle; 221. baffle body; 2211. smoke inlet; 2212. second mounting lug; 222. flow guide;

[0045] 50. guide device; 51. guide cone; 511. guide cone body; 5111. first sound absorbing through hole; 5112. first cavity; 5113. first protrusion; 512. first sound absorbing layer; 5121. first groove; 5122. second protrusion; 5123. second groove; 53. guide hopper; 531. guide hopper body; 5311. second sound absorbing through hole; 5312. second cavity; 5313. third protrusion; 532. second sound absorbing layer; 5321. third groove; 5322. fourth protrusion; 5323. fourth groove. DETAILED DESCRIPTION

[0046] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and implementation methods. It is understood that the specific embodiments described herein are only used to explain the utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings, rather than all.

[0047] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] In the description of the embodiments of the present disclosure, the terms "upper", "lower", "left", "right", etc., and the like, are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0050] like Figure 1 and Figure 2 As shown, the present embodiment provides an oil fume treatment device 100, which can be a range hood, an integrated stove, an oil fume purification system, etc. The present embodiment is described by taking the range hood as an example, the range hood comprises a shell 10 and a fan system 20, the shell 10 comprises a main case 11 and a smoke collecting chamber body 12, the main case 11 is provided with an inner cavity and an air outlet 113, the air outlet 113 is connected with the inner cavity, the smoke collecting chamber body 12 is provided with a smoke collecting chamber body 122 and an air inlet 121, the air inlet 121 is connected with the smoke collecting chamber body 122, the inner cavity is connected with the smoke collecting chamber body 122, the fan system 20 is arranged in the inner cavity, when the fan system 20 is working, the oil fume outside the smoke collecting chamber body 12 can pass through the air inlet 121, the smoke collecting chamber 122 and the inner cavity in sequence, the oil fume is purified in the fan system 20, and the purified gas is discharged to the outside from the air outlet 113. The smoke collecting chamber body 12 can have a better smoke collecting effect on the oil smoke, so that the range hood can better absorb the oil smoke.

[0051] It should be noted that the range hood shown in the embodiment of the present disclosure may be a ceiling-type range hood, but the range hoods applicable to the fan system 20 are not limited to this form, and the range hood may also be other types such as a low-suction range hood, a side-suction range hood, etc.

[0052] like Figure 1 and Figure 2As shown, the range hood further includes a guide device 50 , and the fan system 20 , the guide device 50 and the air outlet 113 are arranged in sequence along the flow direction S of the oil smoke, and the guide device 50 can guide the purified gas to enter the air outlet 113 better.

[0053] like Figure 1 to Figure 3 As shown, the guide device 50 includes a guide cone 51, and the guide cone 51 includes a guide cone body 511. The guide cone body 511 is arranged downstream of the fan system 20. A first cavity 5112 is provided inside the guide cone body 511. The outer contour area of ​​the cross section of the guide cone body 511 gradually decreases along the flow direction S of the oil smoke. The guide cone body 511 can better guide the gas purified by the fan system 20 to the air outlet 113. In addition, the setting of the guide cone body 511 can also guide the high-speed gas and the low-speed airflow to mix, prevent the backflow problem of the back side airflow of the fan system 20, and the guide cone body 511 can effectively reduce the aerodynamic noise.

[0054] In addition, if Figure 1 to Figure 3 As shown, the guide cone body 511 is provided with a first sound-absorbing through hole 5111, and the first sound-absorbing through hole 5111 can absorb a part of the noise, thereby achieving a silent working effect of the range hood. Figure 3 As shown, the guide cone 51 also includes a first sound absorbing layer 512, which is arranged on the inner side of the guide cone body 511, and can further reduce the noise of the purified gas when passing through the guide cone body 511, thereby further reducing the noise of the range hood in operation and achieving a silent use effect of the range hood.

[0055] like Figure 1 and Figure 2 As shown, the housing 10 further includes a first baffle 13, which is disposed in the inner cavity and has a through hole 131, and the flow guide device 50 includes a flow guide hopper 53, one end of which is connected to the through hole 131, and the other end of which is connected to the air outlet 113. The housing 10, the first baffle 13, and the flow guide hopper 53 together form a silencer cavity 112, and the setting of the silencer cavity 112 can weaken noise transmission and reduce noise during the use of the range hood. In addition, the inner cavity forms a receiving cavity 111 on the other side of the first baffle 13, and the receiving cavity 111 is connected to the silencer cavity 112 through the through hole 131, and the fan system 20 is disposed in the receiving cavity 111.

[0056] like Figure 1 to Figure 4As shown, the flow guide device 50 includes a flow guide hopper 53, which includes a tubular flow guide hopper body 531. The flow guide hopper body 531 is provided with a through second cavity 5312. One end of the flow guide hopper 53 is connected to the through hole 131, and the other end of the flow guide hopper 53 is connected to the air outlet 113. The inner diameter of the flow guide hopper 53 gradually decreases along the flow direction S of the oil smoke, so that the purified gas can be discharged quickly and in large quantities from the air outlet 113.

[0057] In addition, if Figure 1 to Figure 3 As shown, the guide hopper body 531 is provided with a second sound-absorbing through hole 5311. The second sound-absorbing through hole 5311 can absorb a part of the noise, thereby achieving a silent working effect of the range hood. Figure 4 As shown, the guide scoop 53 further includes a second sound absorbing layer 532, and the second sound absorbing layer 532 is arranged on the inner side of the guide scoop body 531, so as to further reduce the noise of the range hood in operation and achieve a silent use effect of the range hood.

[0058] like Figure 3 and Figure 4 As shown, the first sound absorbing layer 512 and the second sound absorbing layer 532 can be made of sound absorbing materials respectively. The sound absorbing materials can be organic fibers, inorganic fibers, inorganic foams, foam plastics, etc. The aforementioned sound absorbing materials can absorb noise well.

[0059] like Figure 3 As shown, the first sound absorbing layer 512 can be provided as one layer or at least two layers. When the first sound absorbing layer 512 is provided as one layer, the structure of the guide cone 51 is simple and easy to assemble. Figure 5 As shown, when there are at least two first sound absorbing layers 512, at least two first sound absorbing layers 512 are arranged in sequence along the thickness direction of the guide cone body 511. Since there are more first sound absorbing layers 512, better noise absorption can be achieved.

[0060] like Figure 5 As shown, the first sound absorbing layer 512 is provided with a first groove 5121, and the guide cone body 511 includes a first protrusion 5113, and the first protrusion 5113 and the first groove 5121 are matched in a concave-convex manner, so that the first sound absorbing layer 512 and the guide cone body 511 can achieve a good limiting and fixing effect, and avoid the first sound absorbing layer 512 and the guide cone body 511 from being separated during use. Of course, in other embodiments, the first sound absorbing layer 512 can also be provided with a first protrusion (not shown in the figure), and the guide cone body 511 can be provided with a first groove (not shown in the figure), and the first protrusion and the first groove can be matched in a concave-convex manner, which can also achieve the above effect.

[0061] like Figure 5As shown, when the first sound absorbing layer 512 is at least two layers, one of the two adjacent first sound absorbing layers 512 includes a second protrusion 5122, and the other of the two adjacent first sound absorbing layers 512 is provided with a second groove 5123. The second protrusion 5122 and the second groove 5123 cooperate with each other in a concave-convex manner, thereby achieving a better limiting and fixing effect of the two adjacent first sound absorbing layers 512, and preventing the two adjacent first sound absorbing layers 512 from separating during use.

[0062] Figure 3 and Figure 5 As shown, the cross-section of the first sound-absorbing through hole 5111 may be circular or polygonal. The first sound-absorbing through hole 5111 has a simple structure, is easy to manufacture, and can achieve a good noise reduction effect.

[0063] like Figure 1 and Figure 2 As shown, a plurality of first sound-absorbing through holes 5111 may be provided, and the plurality of first sound-absorbing through holes 5111 are arranged in an array, so as to achieve a better noise reduction effect of the guide cone body 511.

[0064] like Figure 4 As shown, the second sound absorbing layer 532 can be set as one layer or at least two layers. When the second sound absorbing layer 532 is set as one layer, the structure of the guide bucket 53 is simple and easy to assemble. Figure 6 As shown, when there are at least two layers of the second sound absorbing layer 532, at least two layers of the second sound absorbing layer 532 are arranged in sequence along the thickness direction of the guide bucket body 531. Since there are more layers of the second sound absorbing layer 532, a better noise absorption effect can be achieved.

[0065] like Figure 6 As shown, the second sound absorbing layer 532 is provided with a third groove 5321, and the guide bucket body 531 includes a third protrusion 5313, and the third protrusion 5313 and the third groove 5321 are matched in a concave-convex manner, so that the second sound absorbing layer 532 and the guide bucket body 531 can achieve a better limiting and fixing effect, and prevent the second sound absorbing layer 532 and the guide bucket body 531 from being separated during use. Of course, in other embodiments, the second sound absorbing layer 532 can also be provided with a third protrusion (not shown in the figure), and the guide bucket body 531 can be provided with a third groove (not shown in the figure), and the third protrusion and the third groove can be matched in a convex manner, which can also achieve the above effect.

[0066] Figure 4 and Figure 6 As shown, the cross-section of the second sound-absorbing through hole 5311 may be circular or polygonal. The second sound-absorbing through hole 5311 has a simple structure, is easy to manufacture, and can achieve a good noise reduction effect.

[0067] like Figure 1 and Figure 2As shown, the second sound-absorbing through holes 5311 can be provided in plurality, and the plurality of second sound-absorbing through holes 5311 are arranged in an array, so as to achieve a better noise reduction effect of the guide scoop body 531 .

[0068] like Figure 6 As shown, when the second sound absorbing layer 532 is at least two layers, one of the two adjacent second sound absorbing layers 532 includes a fourth protrusion 5322, and the other of the two adjacent second sound absorbing layers 532 is provided with a fourth groove 5323. The fourth protrusion 5322 and the fourth groove 5323 cooperate with each other in a concave-convex manner, thereby achieving a better limiting and fixing effect of the two adjacent second sound absorbing layers 532, and preventing the two adjacent second sound absorbing layers 532 from separating during use.

[0069] like Figure 1 , Figure 2 and Figure 7 As shown, the fan system 20 includes a fan 21 and a second baffle 22, the fan 21 has an air inlet 21221, and the second baffle 22 is provided with a smoke inlet 2211, the second baffle 22 is arranged in the accommodating cavity 111, and the second baffle 22 divides the accommodating cavity 111 into a connecting cavity 1111 and a sealed cavity 1112, the air inlet 121, the smoke collecting cavity 122, the connecting cavity 1111, the smoke inlet 2211, the air inlet 21221, the sealed cavity 1112 and the air outlet 113 are sequentially connected along the flow direction S of the oil smoke, the fan 21 is arranged in the sealed cavity 1112, to ensure that the connecting cavity 1111 and the sealed cavity 1112 are independent of each other, to ensure a good sealing effect of the sealed cavity 1112, and to enable the fan 21 to achieve a more sufficient separation and filtering effect on the oil and impurities in the oil smoke.

[0070] like Figure 1 , Figure 2 and Figure 7 As shown, the second baffle 22 includes a baffle body 221, on which a smoke inlet 2211 is opened. The outer peripheral surface of the baffle body 221 is sealed against the inner wall of the outer shell 10, thereby achieving a better separation effect on the connecting cavity 1111 and the sealed cavity 1112, avoiding the formation of a gap between the baffle body 221 and the outer shell 10.

[0071] like Figure 1 , Figure 2 and Figure 7As shown, the fan 21 is a volute-free centrifugal fan, which includes a first motor 211 and an impeller assembly 212. The first motor 211 can drive the impeller assembly 212 to rotate. The impeller assembly 212 includes a wheel disc 2121, a wheel cover 2122, and a plurality of blades 2123. The air inlet 21221 is provided on the wheel cover 2122. The wheel cover 2122 and the wheel disc 2121 are arranged at intervals along the flow direction S of the oil smoke. The plurality of blades 2123 are arranged between the wheel disc 2121 and the wheel cover 2122 and are arranged at intervals along the circumference of the wheel disc 2121. The volute-free centrifugal fan has a simple structure, a small volume, and occupies a small space in the housing 10, and can achieve a good up and down movement effect of the fan system 20 in the housing 10.

[0072] In addition, by utilizing the characteristic of no volute of the voluteless centrifugal fan, it is possible to avoid the flow of oil smoke from having a large impact on the impeller assembly 212, and avoid the problem of large noise of the range hood caused by the impact, so that the range hood can be used quietly. In addition, by utilizing the characteristic of no volute of the voluteless centrifugal fan, the voluteless centrifugal fan does not have a saddle-shaped working area like the axial flow fan in the small flow area of ​​the characteristic curve, and there is no "surge" phenomenon. In addition, by utilizing the characteristic of no volute of the voluteless centrifugal fan, the voluteless centrifugal fan has oil smoke flowing out in 360° directions, and the oil smoke can be made to flow out in the specified direction by adding an external box, which is more convenient to install. In addition, by utilizing the characteristic of no volute of the voluteless centrifugal fan, it is more convenient to clean the impeller assembly 212, and there is no need to clean the belt and pulley (the fan is directly connected to the motor), so it is more hygienic when working; in addition, the voluteless centrifugal fan is simple to manufacture, reduces the use of raw materials, and reduces production costs.

[0073] like Figure 1 , Figure 2 and Figure 7 As shown, the second baffle 22 also includes a guide member 222, which is formed by extending the smoke inlet 2211 toward the flow direction S of the oil smoke. The guide member 222 can guide the oil smoke at the smoke inlet 2211 into the air inlet 21221, so that the oil smoke at the smoke inlet 2211 can better enter the air inlet 21221, thereby achieving a better filtering effect of the fan 21 on the inhaled oil smoke.

[0074] like Figure 1 , Figure 2 and Figure 7 As shown, the guide member 222 is a first annular structure. Along the flow direction S of the oil fume, the inner diameter of the first annular structure gradually decreases. When the oil fume passes through the guide member 222, the effects of pressurization and acceleration can be achieved, and a better filtering and purification effect can be achieved for the high-pressure and high-speed oil fume entering the fan 21.

[0075] like Figure 1 , Figure 2 and Figure 7 As shown, the wheel cover 2122 is a second annular structure. Along the flow direction S of the oil smoke, the inner diameter of the second annular structure gradually increases. The second annular structure is arranged in an arc shape. The second annular structure bends in the direction away from the blade 2123. The second annular structure is used to guide the flow of the oil smoke, so that the flow of the oil smoke is smoother.

[0076] like Figure 1 , Figure 2 and Figure 7 As shown, the guide member 222 is plugged into the wheel cover 2122 , so that the oil smoke in the smoke inlet 2211 can be better introduced into the air inlet 21221 , thereby achieving a more sufficient filtering effect of the fan 21 on the oil smoke.

[0077] like Figure 1 , Figure 2 and Figure 7 As shown, since the wheel cover 2122 is in a rotating state during the operation of the fan 21, the wheel cover 2122 and the guide member 222 are spaced apart in the radial direction, so as to prevent the guide member 222 from interfering with the wheel cover 2122 and ensure smooth rotation of the wheel cover 2122. It should be noted that the gap between the wheel cover 2122 and the guide member 222 in the radial direction can be 1mm to 3mm. On the premise of ensuring smooth rotation of the wheel cover 2122 relative to the guide member 222, the oil fume leakage problem caused by the excessive gap between the wheel cover 2122 and the guide member 222 can be avoided, and more oil fume can be ensured to smoothly enter the fan 21 for centrifugal separation.

[0078] like Figure 1 , Figure 2 and Figure 7 As shown, the fan 21 further includes a mounting frame 215 , and the first motor 211 is fixedly disposed on the mounting frame 215 . The mounting frame 215 is fixedly connected to the housing 10 , so that the mounting frame 215 can provide a stable support for the first motor 211 .

[0079] Specifically, if Figure 7 As shown, the mounting frame 215 includes a first mounting lug 2151 , and the baffle body 221 includes a second mounting lug 2212 . The first mounting lug 2151 and the second mounting lug 2212 can be fixedly connected to the housing 10 respectively, thereby achieving a better fixing effect between the mounting frame 215 and the housing 10 .

[0080] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A fume treatment device, comprising a housing (10) and a fan system (20) arranged therein, wherein the housing (10) comprises an air outlet (113), characterized in that: The oil fume treatment device also includes: The flow guide device (50) comprises a flow guide body and a sound absorbing layer, wherein the flow guide body can guide the gas filtered by the fan system (20) to the air outlet (113), the flow guide body is hollow and has sound absorbing through holes, and the sound absorbing layer is arranged on the inner side of the flow guide body.

2. The oil fume treatment device according to claim 1, characterized in that: The sound absorbing layer is made of a sound absorbing material, and the sound absorbing material is organic fiber, inorganic fiber, inorganic foam or foam plastic; and / or The sound absorbing layer is one layer or at least two layers; when the sound absorbing layer is at least two layers, the at least two layers of the sound absorbing layer are sequentially arranged in abutment with each other along the thickness direction of the flow guide body; and / or The sound absorbing layer includes a first limiting member, the guide body includes a second limiting member, and the first limiting member and the second limiting member are matched with each other in a concave-convex manner; and / or The cross section of the sound-absorbing through hole is circular or polygonal; and / or There are a plurality of the sound-absorbing through holes, and the plurality of the sound-absorbing through holes are arranged in an array.

3. The oil fume treatment device according to claim 1, characterized in that: The flow guiding device (50) comprises a flow guiding cone (51), and the flow guiding cone (51) comprises: A guide cone body (511) is provided with a first sound-absorbing through hole (5111), and the outer contour area of ​​the cross section of the guide cone body (511) gradually decreases along the flow direction of the oil smoke; and The first sound absorbing layer (512) is arranged on the inner side surface of the guide cone body (511).

4. The oil fume treatment device according to claim 3, characterized in that: The shell (10) further comprises a first baffle (13), the first baffle (13) being arranged in the inner cavity of the shell (10) and having a through hole (131), the flow guide device (50) comprising a flow guide hopper (53), one end of the flow guide hopper (53) being connected to the through hole (131), and the other end of the flow guide hopper (53) being connected to the air outlet (113), and the shell (10), the first baffle (13) and the flow guide hopper (53) together constitute a silencer cavity (112).

5. The oil fume treatment device according to claim 4, characterized in that: The guide bucket (53) comprises: The flow guide hopper body (531) is tubular and has a second sound-absorbing through hole (5311). The inner diameter of the flow guide hopper body (531) gradually decreases along the flow direction of the oil smoke. The second sound absorbing layer (532) is arranged on the inner side of the guide scoop body (531).

6. The oil fume treatment device according to any one of claims 1 to 5, characterized in that: The fan system (20) comprises: A fan (21), wherein the fan (21) has an air inlet (21221); and A second baffle (22), a smoke inlet (2211) is provided on the second baffle (22), the second baffle (22) is arranged in the outer shell (10) and divides the inner cavity of the outer shell (10) into a connecting cavity (1111) and a sealed cavity (1112), the outer shell (10) comprises an air inlet (121), the air inlet (121), the connecting cavity (1111), the smoke inlet (2211), the air inlet (21221), the sealed cavity (1112) and the air outlet (113) are sequentially connected along the flow direction of the oil smoke, and the fan (21) is arranged in the sealed cavity (1112).

7. The oil fume treatment device according to claim 6, characterized in that: The fan (21) comprises: a first motor (211); and An impeller assembly (212), wherein the first motor (211) can drive the impeller assembly (212) to rotate, the impeller assembly (212) comprising a wheel disc (2121), a wheel cover (2122), and a plurality of blades (2123), the air inlet (21221) being provided on the wheel cover (2122), the wheel cover (2122) and the wheel disc (2121) being arranged at intervals along the flow direction of oil smoke, and the plurality of blades (2123) being arranged between the wheel disc (2121) and the wheel cover (2122) and being arranged at intervals along the circumference of the wheel disc (2121).

8. The oil fume treatment device according to claim 7, characterized in that: The second baffle (22) comprises: a baffle body (221) on which the smoke inlet (2211) is provided, and the outer peripheral surface of the baffle body (221) is in sealing contact with the inner wall of the outer shell (10); and The guide member (222) is formed by extending the smoke inlet (2211) toward the flow direction of the oil smoke, and the guide member (222) can guide the oil smoke at the smoke inlet (2211) into the air inlet (21221).

9. The oil fume treatment device according to claim 8, characterized in that: The flow guide (222) is a first annular structure, and the inner diameter of the first annular structure gradually decreases along the flow direction of the oil smoke; and / or The air inlet (21221) is opened on the wheel cover (2122), and the wheel cover (2122) is a second annular structure. Along the flow direction of the oil smoke, the inner diameter of the second annular structure gradually increases.

10. The oil fume treatment device according to claim 8, characterized in that: The flow guide (222) is plugged into the wheel cover (2122).

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