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 cooking fume treatment device comprises a pipeline assembly, a fan case and a fan, the fan case and the pipeline assembly are communicated through an air inlet and arranged in the front-back direction, an air outlet is formed in the fan case, the fan comprises a volute and an impeller rotationally arranged in the volute, the volute is arranged in the fan case, an air inlet is formed in the volute, and the impeller is arranged in the air inlet. The impeller is provided with a rotating shaft LC, the rotating shaft LC and the front-back direction form an included angle, a first side C1, close to the air outlet, of the air inlet is arranged close to the air inlet in the front-back direction compared with a second side C2, far away from the air outlet, of the air inlet, and an air inlet area with the maximum air inlet amount can be arranged close to the air inlet, so that airflow flowing of the air inlet is facilitated; the pneumatic performance of the whole machine is guaranteed, the air inlet amount of the fan can be increased, and therefore the oil smoke suction effect of the oil smoke treatment device is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to domestic appliance technical field especially relates to a kitchen fume treatment device. BACKGROUND

[0002] The range hood has become one of the kitchen household appliances in modern family, and the main function of the range hood is to suck the oil fume during cooking, so as to maintain the good environment of the kitchen. The existing range hood comprises a fan case, a fan and a smoke collecting system, the fan is arranged in the interior of the fan case, and the smoke collecting system is located below the fan case and is communicated with the fan case. When the range hood is used, the fan works, so that a negative pressure area is formed in a certain space range above the stove, the oil fume in the room is sucked into the interior of the range hood, and the subsequent flue gas is discharged outside through the pipeline.

[0003] The fan used in the existing range hood is a centrifugal fan, and since the volute of the centrifugal fan is a spiral line structure, the air inlet of the fan is not uniformly distributed, so when the fan is arranged in some way, the air inlet amount of the fan is poor and the oil fume suction effect of the range hood is poor.

[0004] Therefore, it is urgent to design a new kitchen fume treatment device to improve the air inlet amount of the fan and the oil fume suction effect of the range hood. SUMMARY

[0005] The utility model discloses a kitchen fume treatment device, effectively improve the air inlet amount of the fan, can also improve the oil fume suction effect of the range hood.

[0006] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0007] A kitchen fume treatment device, comprising:

[0008] A pipeline assembly;

[0009] A fan case, which is communicated with the pipeline assembly through an air inlet and is arranged along the front-rear direction, and an air outlet is arranged on the fan case; and

[0010] A fan, comprising a volute and an impeller rotatingly arranged in the volute, the volute is arranged in the fan case, an air inlet is arranged on the volute, the volute is communicated with the air outlet, and the impeller has a rotating shaft L C , the rotating shaft L C is arranged at an angle with the front-rear direction, and the air inlet arranged on the first side C1 close to the air outlet is arranged closer to the air inlet along the front-rear direction than the second side C2 away from the air outlet.

[0011] As an optional scheme, the projection of the air inlet on the horizontal plane H C is arranged at intervals along the front-rear direction with the air inlet.

[0012] As an optional solution, the air inlet is spaced apart from the inner wall of the fan case opposite to the air inlet to form an air duct F.

[0013] As an optional solution, the air inlet is arranged upwardly and is arranged downwardly from front to back.

[0014] The air inlet is arranged downwardly and is arranged upwardly from front to back.

[0015] As an optional solution, the plane where the air inlet is arranged is arranged at a first angle a with the horizontal plane H C , where 0°≤a≤45°.

[0016] As an optional solution, the air inlet is arranged upwardly and is arranged downwardly from front to back.

[0017] As an optional solution, the plane where the air inlet is arranged is arranged at a second angle β with the horizontal plane H C , where 0°≤β≤45°.

[0018] As an optional solution, the first area S1 of the air inlet is greater than or equal to the sum S2 of the areas of all the air inlets.

[0019] As an optional solution, the fan case comprises a bottom plate connected to the pipeline assembly, and the bottom plate is arranged downwardly from front to back.

[0020] As an optional solution, the air inlet is arranged upwardly, downwardly, leftwardly or rightwardly.

[0021] The beneficial effects of the utility model are as follows:

[0022] The oil fume treatment device comprises a pipeline assembly, a fan case and a fan, the fan case and the pipeline assembly are connected and arranged along the front-rear direction through an air inlet, the fan case is provided with an air outlet, the fan comprises a volute and an impeller rotatably arranged in the volute, the volute is arranged in the fan case, the volute is provided with an air inlet, the volute and the air outlet are connected, the impeller has a rotation axis L C , the rotation axis L C is arranged at an angle with the front-rear direction, the first side C1 of the air inlet close to the air outlet is arranged along the front-rear direction close to the air inlet compared with the second side C2 of the air inlet away from the air outlet, the air inlet region with the largest air inlet amount is arranged close to the air inlet, which is beneficial to the airflow of the air inlet, guarantees the aerodynamic performance of the whole machine, and the air inlet amount of the fan can be improved, so that the oil fume treatment effect of the oil fume treatment device is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the oil fume treatment device, wall, suspended ceiling and cooking area provided by the embodiment one of the utility model;

[0024] Figure 2 is a structural schematic view of the oil fume treatment device provided by the embodiment one of the utility model;

[0025] Figure 3 is a first schematic view of the fan and fan case provided by the embodiment one of the utility model;

[0026] Figure 4 is a second schematic view of the fan and fan case provided by the embodiment one of the utility model;

[0027] Figure 5 is a third schematic view of the fan and fan case provided by the embodiment one of the utility model;

[0028] Figure 6 is a structural schematic view of the fan and fan case provided by the embodiment two of the utility model;

[0029] Figure 7 is a structural schematic view of the fan and fan case provided by the embodiment three of the utility model;

[0030] Figure 8 is a structural schematic view of the fan and fan case provided by the embodiment four of the utility model;

[0031] Figure 9 is a structural schematic view of the oil fume treatment device provided by the embodiment five of the utility model.

[0032] In the figure:

[0033] 100, oil fume treatment device; 200, wall; 300, suspended ceiling; 400, cooking area;

[0034] 10, smoke collecting system; 11, smoke collecting system main body; 111, smoke inlet; 12, flap;

[0035] 20, fan case; 21, case main body; 211, air inlet; 212, bottom plate; 213, air outlet;

[0036] 30, pipeline assembly; 31, connecting pipe body; 32, flexible pipe body; 33, rigid pipe body;

[0037] 40, fan; 41, volute; 411, air inlet; 413, air outlet end; 42, impeller. DETAILED DESCRIPTION

[0038] The technical solutions of the utility model are further illustrated below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely used to explain the utility model, and not to limit the utility model. In addition, it should be noted that only parts related to the utility model are shown in the drawings for the convenience of description, not all.

[0039] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0041] In the description of the embodiments of the present disclosure, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, 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 particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.

[0042] Embodiment one

[0043] As Figure 1 shown, the oil fume treatment device 100 provided by the embodiments of the present disclosure can be all types of devices with oil fume treatment function such as top-mounted range hood, side-suction range hood, top-suction range hood, etc. All types of devices with oil fume treatment function are within the protection scope of the embodiments of the present disclosure, and the embodiments of the present disclosure take the top-mounted range hood as an example to explain the structure of the oil fume treatment device 100.

[0044] As Figure 1 and Figure 2As shown, the oil fume treatment device 100 includes a fan case 20, a smoke collecting system 10, and a pipeline assembly 30. The fan case 20 includes a case main body 21, which is arranged along a front-rear direction with the pipeline assembly 30. The case main body 21 is connected to the pipeline assembly 30 through an air inlet 211. One end of the pipeline assembly 30 is connected to the case main body 21, and the other end of the pipeline assembly 30 is connected to the smoke collecting system 10. Figure 1 and Figure 2 As shown, the inside of the case main body 21 is provided with a fan 40. The fan 40 can generate a negative pressure, which can make the oil fume in the cooking area 400 pass through the smoke collecting system 10, the pipeline assembly 30, and the case main body 21 in sequence and then be discharged to the outdoor.

[0045] As shown, Figure 2 the fan 40 includes a volute 41 and an impeller 42 arranged in the volute 41. The volute 41 is provided with an air inlet 411. The fan 40 of the present embodiment is a double-air-inlet fan. The fan 40 has two air inlets 411, which are arranged in a spaced-apart manner along the up-down direction. The double-air-inlet fan has a larger air inlet amount, and the oil fume treatment device 100 has a better oil fume suction effect. Of course, in other embodiments, the fan 40 can also include only one air inlet 411, or three air inlets 411, four air inlets 411, or more air inlets 411. Figures 3-5 As shown, the impeller 42 has a rotation axis L C The impeller 42 can rotate relative to the volute 41 about the rotation axis L C .

[0046] As shown, Figure 1 the case main body 21 is arranged above the ceiling 300 and is detachably connected to the top wall 200. The case main body 21 is arranged above the ceiling 300, which is far away from the user. The ceiling 300 can isolate the noise generated during the operation of the case main body 21, reduce the influence of the noise on the user, and improve the use experience. When the height of the wall 200 is different, the length of the pipeline assembly 30 is adjusted to ensure the working reliability of the oil fume treatment device 100. Specifically, as shown, Figure 1 and Figure 2 the pipeline assembly 30 includes a connecting pipe body 31, a flexible pipe body 32, and a rigid pipe body 33 connected in sequence. The connecting pipe body 31 is connected to the case main body 21, and the rigid pipe body 33 is connected to the smoke collecting system 10. The flexible pipe body 32 is a pipe body with an adjustable length, so as to adjust the overall length of the pipeline assembly 30. The connecting pipe body 31 and the rigid pipe body 33 can be hard connection joints, so as to realize the stable connection of the pipeline assembly 30 with the case main body 21 and the smoke collecting system 10, respectively.

[0047] As shown, Figure 1As shown, the smoke collection system 10 comprises a smoke collection system body 11 and a flap 12, wherein the smoke collection system body 11 is provided with a smoke inlet 111, and the flap 12 is arranged on the smoke collection system body 11 and can be switched between a first state of opening the smoke inlet 111 and a second state of closing the smoke inlet 111.

[0048] The fan used in the existing range hood is a centrifugal fan. Due to the spiral structure of the volute of the centrifugal fan, the air inlet of the fan is not uniformly distributed. Different placement modes of the fan will affect the air inlet amount of the fan and the oil fume suction effect of the range hood. When the fan is arranged in some modes, the air inlet amount of the fan is poor and the oil fume suction effect of the range hood is poor.

[0049] As shown in the Figures 3-4 As shown in the Figures 3-4 To solve the problem of poor air inlet amount of the fan and poor oil fume suction effect of the range hood, as shown in the C The installation mode of the fan 40 arranged at an angle with the front-rear direction is to arrange the air inlet 411 close to the first side C1 of the air outlet 213 along the front-rear direction compared with the second side C2 of the air inlet 411 away from the air outlet 213. The air inlet region with the maximum air inlet amount is arranged close to the air inlet 211, which is beneficial to the airflow of the air inlet 211, ensures the aerodynamic performance of the whole machine, and improves the air inlet amount of the fan 40, thereby effectively improving the oil fume suction effect of the oil fume treatment device 100.

[0050] As shown in the Figure 2 and Figure 4 The air inlet 411 is arranged at an interval with the inner wall of the cabinet body 21 opposite to the air inlet 411 to form an air duct F. The oil fume entering from the air inlet 211 can smoothly enter the inside of the fan 40 through the air duct F. As shown in the Figures 3-5 The rotation axis L C of the fan 40 of the embodiment of the present disclosure extends along the up-down direction. At this time, the fan 40 is arranged horizontally in the cabinet body 21. The fan 40 is arranged in this mode, which can make the size of the cabinet body 21 along the up-down direction relatively small, thereby ensuring that the fan cabinet 20 with a relatively small thickness along the up-down direction can be reasonably arranged above the ceiling 300 as shown in the Figure 1 The arrangement mode of the fan 40 is especially beneficial to the installation condition of a small space above the ceiling 300.

[0051] As shown in the Figure 5As shown in the figure, one of the air inlets 411 is arranged upward, and the other air inlet 411 is arranged downward, each air inlet 411 is arranged in the inner wall of the corresponding volute 41 to form an air duct F, and the oil fume entering from the air inlet 211 can enter the corresponding air inlet 411 uniformly through the two air ducts F, which is beneficial to improve the air volume of the fan 40, and can effectively reduce the noise caused by the uneven air volume on both sides of the fan 40, so as to realize the silent use of the fan 40.

[0052] As shown in the figure, Figures 3-5 The first area S1 of the air inlet 211 is greater than or equal to the sum S2 of the areas of all air inlets 411, so that the oil fume entering from the air inlet 211 can provide sufficient air volume for all air inlets 411, thereby ensuring that the fan 40 always has sufficient air volume, which is beneficial to the airflow flow and ensures the better aerodynamic performance of the whole machine, and can realize the better absorption and filtering effect of the oil fume treatment device 100 on the oil fume.

[0053] As shown in the figure, Figure 3 and Figure 5 The projection of the air inlet 211 on the horizontal plane H C is arranged in the front-rear direction, and the volute 41 does not block the air inlet 211, which ensures the circulation of the airflow, so that the oil fume treatment device 100 can effectively maintain pressure under the maximum static pressure condition, avoid pressure relief of the oil fume treatment device 100 under the maximum static pressure condition, improve the pressure resistance of the oil fume treatment device 100 to the public flue when absorbing oil fume, and ensure that the oil fume treatment device 100 always has a better absorption effect on the oil fume, so as to avoid the overflow of the oil fume from the smoke inlet 111 as shown in the figure, Figure 1 which ensures the cleanliness of the kitchen environment.

[0054] Embodiment two

[0055] As shown in the figure, Figure 6 The oil fume treatment device 100 provided by the embodiment of the present disclosure has the same structure as the oil fume treatment device 100 of embodiment one, and the main difference between the two is that the air inlet 411 is provided as two, the two air inlets 411 are arranged in the up-down direction, from the end of the volute 41 connected with the air outlet 213 to the end of the volute 41 away from the air outlet 213, and the air inlet 411 located on the upper side is arranged downward. Since the air volume of the upper region of the fan 40 is greater than that of the lower region, the upper region of the fan 40 is the main air inlet region of the fan 40, and the foregoing arrangement can ensure that the air inlet 411 on the upper side of the fan 40 has sufficient air volume, thereby realizing the better oil fume absorption effect of the oil fume treatment device 100. The air inlet 411 can be arranged downward to the left or upward to the right.

[0056] Specifically, the plane where the upper air intake 411 is located is perpendicular to the horizontal plane H. C The air inlet 411 above the fan 40 is set at a second included angle β, where 0°≤β≤45°, allowing sufficient airflow to enter and thus achieving a better oil fume extraction effect for the oil fume treatment device 100. The second included angle β can be 1°, 5°, 10°, 15°, 20°, 30°, 35°, 40°, 45°, etc., and all point values ​​or range values ​​within the range of 0° or greater and 45° or less are within the protection scope of this disclosure embodiment.

[0057] Example 3

[0058] like Figure 7 As shown, this embodiment of the present disclosure provides an oil fume treatment device 100. The structure of the oil fume treatment device 100 is basically the same as that of the oil fume treatment device 100 in Embodiment 1. The main difference is that the air inlet 411 is set to a single upward orientation. The single air inlet 411 can maximize the airflow on one side of the duct F, which is beneficial to increasing the air volume of the fan 40 and improving the oil fume extraction effect of the oil fume treatment device 100. In addition, compared with the fan 40 with dual air inlets 411 in Embodiment 1, the fan 40 of this embodiment has a simpler structure and is easier to assemble quickly.

[0059] like Figure 7 As shown, from the end of the volute 41 connected to the air outlet 213 to the end of the volute 41 away from the air outlet 213 (i.e. from front to back), the upper air inlet 411 is inclined downward, which can provide a larger turning space for the airflow entering through the upper air inlet 411, reduce flow loss, and help increase the air volume of the fan 40. In addition, it is conducive to the collection of oil stains, ensuring that the oil stains can flow out smoothly from the inside of the fan 40.

[0060] Specifically, such as Figure 7 As shown, the plane where the air intake 411 is located is perpendicular to the horizontal plane H. C The air inlet 411 above the fan 40 is set at a first included angle α, where 0°≤α≤45°, allowing sufficient airflow to enter and thus achieving a better oil fume extraction effect for the oil fume treatment device 100. The first included angle α can be 1°, 5°, 10°, 15°, 20°, 30°, 35°, 40°, 45°, etc., and all point values ​​or range values ​​within the range of 0° or greater and 45° or less are within the protection scope of this disclosure embodiment.

[0061] Example 4

[0062] like Figure 8As shown, the oil fume treatment device 100 provided by the embodiment of the present disclosure has the same structure as the oil fume treatment device 100 of the first embodiment, and the main difference between the two is that the air inlet 411 is arranged in one and downward, and the air inlet 411 is arranged upward from front to back, which can provide more turning space for the air flow entering the air inlet 411 below, reduce flow loss, and be conducive to the wind volume of the fan 40. In addition, it is conducive to the gathering of oil stains, and ensures that the oil stains can flow out of the fan 40 smoothly.

[0063] Specifically, as shown in Figure 8 The plane where the air inlet 411 is located is arranged at a first included angle a with the horizontal plane HC, where 0°≤a≤45°, and the air inlet 411 below the fan 40 can enter sufficient air volume, thereby realizing better oil fume treatment effect of the oil fume treatment device 100. The first included angle a can be 1°, 5°, 10°, 15°, 20°, 30°, 35°, 40°, 45°, etc., and all point values or range values within the range of greater than or equal to 0° and less than or equal to 45° are within the protection scope of the embodiment of the present disclosure.

[0064] Embodiment five

[0065] As shown in Figure 9 The oil fume treatment device 100 provided by the embodiment of the present disclosure has the same structure as the oil fume treatment device 100 of the first embodiment, and the main difference between the two is that the cabinet body 21 includes a bottom plate 212, which is inclined downward from the position away from the pipeline assembly 30 to the position adjacent to the pipeline assembly 30 (i.e. from front to back), thereby ensuring that the oil stains in the cabinet body 21 can flow into the pipeline assembly 30 smoothly.

[0066] Specifically, the bottom plate 212 is arranged at a third included angle γ with the horizontal plane H C The third included angle γ is greater than or equal to 1° and less than or equal to 30°, which can realize that the oil stains in the cabinet body 21 flow into the pipeline assembly 30 more smoothly. The third included angle γ can be 1°, 5°, 10°, 15°, 20°, 30°, etc., and all point values or range values within the range of greater than or equal to 1° and less than or equal to 30° are within the protection scope of the embodiment of the present disclosure.

[0067] In addition, compared with the first embodiment, the rotating shaft L C extends along the left-right direction, which can ensure that all air inlets 411 are not blocked, each air inlet 411 can have better air inlet effect, thereby ensuring that the fan 40 has larger air inlet volume, and effectively improving the oil fume treatment effect of the oil fume treatment device 100. The air inlet 411 of the embodiment of the present disclosure can be arranged to the left or to the right.

[0068] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. An oil fume treatment device, characterized by, The application relates to a fan device. The fan device comprises a pipeline assembly (30), a fan box (20) which is communicated with the pipeline assembly (30) through an air inlet (211) and is arranged along the front-back direction, and an air outlet (213) arranged on the fan box (20). The air inlet (411) is spaced apart from the inner wall of the fan box (20) opposite to the air inlet (411) to form an air duct F. The fan (40) comprises a volute (41) and an impeller (42) rotatably arranged in the volute (41), the volute (41) is arranged in the fan case (20), the volute (41) is provided with an air inlet (411), the volute (41) is communicated with the air outlet (213), the impeller (42) has a rotation axis L C , the rotation axis L C is arranged at an angle with the front-rear direction, the air inlet (411) is arranged along the front-rear direction close to the air inlet (211) compared with the second side C2 away from the air outlet (213) close to the first side C1 of the air outlet (213).

2. The oil fume treatment device according to claim 1, characterized in that, The air inlet (211) is arranged spaced apart from the air inlet (411) along the front-rear direction in the projection of the horizontal plane H C the projection of the horizontal plane H 3. The oil fume treatment device according to claim 1, characterized in that, The air inlet (411) is arranged as one and is upwardly arranged, and the air inlet (411) is downwardly inclined from front to back; or 4. The oil fume treatment device according to claim 3, characterized in that, The air inlet (411) is arranged as one and is downwardly arranged, and the air inlet (411) is upwardly inclined from front to back. The air inlet (411) is arranged as two, and the two air inlets (411) are arranged along the up-down direction from one end of the volute (41) connected with the air outlet (213) to the other end of the volute (41) away from the air outlet (213), and the air inlet (411) located at the upper side is downwardly inclined.

5. The cooking fume treatment device according to claim 4, characterized in that, The plane in which the air inlet (411) is located is parallel to the horizontal plane H C is arranged at a first included angle a, where 0° ≤ a ≤ 45°.

6. The oil fume treatment device according to claim 3, characterized in that, The first area S1 of the air inlet (211) is greater than or equal to the sum S2 of the areas of all the air inlets (411).

7. The cooking fume treatment device according to claim 6, characterized in that, The plane in which the upper air inlet (411) is located is parallel to the horizontal plane H C is arranged at a second included angle β, wherein 0°≤β≤45°.

8. The cooking fume processing apparatus according to claim 4 or 5, characterized in that, The fan box (20) comprises a bottom plate (212) connected with the pipeline assembly (30), and the bottom plate (212) is downwardly inclined from front to back.

9. The oil fume processing device according to claim 1, characterized in that, The air inlet (411) is upwardly, downwardly, leftwardly or rightwardly arranged.

10. The cooking fume processing apparatus according to claim 1, characterized in that, ​

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