Fan and smoke suction equipment

Abstract

The utility model relates to the technical field of oil smoke extraction facilities, in particular to a fan and smoke suction equipment, which comprises a shell formed by an air duct front plate, an air duct rear plate and a coaming in a surrounding manner, an air inlet is arranged on the air duct front plate, and an air outlet is arranged at the top or the bottom of the shell; a motor and an impeller are arranged in the shell close to the air inlet, the output end of the motor is in transmission connection with the impeller, and a current collector is fixedly arranged at the air inlet; the air duct front plate and the air duct rear plate are arranged in a relatively inclined mode so that the distance between the air duct front plate and the air duct rear plate can be gradually increased from bottom to top. Aiming at the technical problem that the existing range hood has defects, the utility model improves the structure of the fan to reduce the space occupation of a cooking area near a cooking bench and increase the space occupation of a non-cooking area near the cooking bench, thereby realizing reasonable utilization of the space near the cooking bench on the premise of ensuring the performance of the fan. And the cooking experience is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil fume extraction facilities, in particular to a fan and a smoking device. Background Art

[0002] The oil fume extractor for an integrated stove is generally located on one side of the stove top close to the cavity. The outer contour of the oil fume extractor usually adopts a structure with a front plate and a rear plate parallel to each other. However, this structure limits the shape of the internal fan, thus restricting the air duct performance. Generally, the cooking area near the stove top needs to be as large as possible to facilitate cooking operations. The space above the stove top and in front of the oil fume extractor is a non-cooking area for users and is of little use. Therefore, the outer contour of the traditional oil fume extractor cannot make full use of the space near the stove top. Summary of the Utility Model

[0003] Aiming at the technical problem of the defects existing in the existing oil fume extractors, the utility model provides a fan and a smoking device. By improving the structure of the fan, it reduces the space occupied by the cooking area near the stove top, while increasing the space occupied by the non-cooking area near the stove top. Thus, on the premise of ensuring the performance of the fan, it realizes the rational utilization of the space near the stove top and effectively improves the cooking experience.

[0004] The technical solution provided by the utility model is as follows: A fan includes a housing. The housing includes an air duct front plate, an air duct rear plate and a surrounding plate arranged along the edge of the air duct front plate or the air duct rear plate. The surrounding plate is connected between the air duct front plate and the air duct rear plate. An air inlet is arranged on the air duct front plate, and an air outlet is also arranged on the housing. A motor and an impeller are arranged at the air inlet of the housing. The output end of the motor is in transmission connection with the impeller. A collector is fixedly arranged at the air inlet. The air duct front plate and the air duct rear plate are arranged obliquely relative to each other, so that the distance between the air duct front plate and the air duct rear plate gradually increases from bottom to top.

[0005] Optionally, a horizontal plane is arranged at the top or bottom of the surrounding plate, so that the top or bottom of the housing forms a flat section.

[0006] Optionally, the profile line a at the air outlet is tangent to the inner diameter of the impeller.

[0007] Optionally, at least one side of the housing in the circumferential direction of the impeller is fixedly provided with a noise reduction plate. The noise reduction plate is located on the side of the surrounding plate facing the impeller. A noise reduction cavity is arranged between the noise reduction plate and the surrounding plate. A plurality of through holes communicating with the noise reduction cavity are densely arranged on the noise reduction plate.

[0008] Optionally, sound insulation cotton is arranged in the noise reduction cavity.

[0009] Optionally, the collector is provided with an outlet end face on the side facing the impeller, the outlet end face is parallel to the end face of the impeller, the collector is provided with an inlet end face on the side facing away from the outlet end face, the inlet end face is inclined relative to the outlet end face, and the inlet end face is parallel to the front plate of the air duct.

[0010] Optionally, the collector is provided with a plurality of guide plates arranged in a circular array, the guide plates extend and tilt from the middle of the collector to the edge, and the tilt direction of the guide plates is opposite to the rotation direction of the impeller.

[0011] Optionally, the current collector is provided with a plurality of rectifying rings distributed step by step from the center to the outside, and there is a distance between any two adjacent rectifying rings.

[0012] A smoking device comprises the above-mentioned fan, and a machine head, an air outlet hood and a smoke pipe composed of an outer shell and a back plate; the outer shell is provided with a smoke inlet, the smoke inlet is connected with the air inlet, and the distance between the part of the outer shell provided with the smoke inlet and the back plate gradually increases from bottom to top; the fan is located in the machine head, and the smoke pipe is connected with the air outlet on the upper side or lower side of the fan through the air outlet hood.

[0013] Beneficial Effects

[0014] The technical solution provided by the utility model has the following beneficial effects compared with the prior art: in view of the technical problems of defects in existing range hoods, the utility model improves the fan structure to reduce the space occupied by the cooking area near the stove, while increasing the space occupied by the non-cooking area near the stove, thereby achieving reasonable utilization of the space near the stove while ensuring the performance of the fan, and effectively improving the cooking experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the partial structure of a smoking device proposed in an embodiment of the utility model.

[0016] Figure 2 This is one of the structural schematic diagrams of a fan proposed in an embodiment of the utility model.

[0017] Figure 3 The present invention is a schematic diagram of an exploded structure of a fan proposed in an embodiment of the present invention.

[0018] Figure 4 The present invention is a schematic cross-sectional view of a fan according to an embodiment of the present invention.

[0019] Figure 5 This is a schematic structural diagram of the fan contour line proposed in an embodiment of the utility model.

[0020] Figure 6 The structural schematic diagram of the current collector proposed by the embodiment of the present utility model.

[0021] Figure 7 The sectional structural schematic diagram of the current collector proposed by the embodiment of the present utility model.

[0022] Figure 8 One of the implementation manners of a smoking device proposed by the embodiment of the present utility model.

[0023] Figure 9 The structural explosion schematic diagram of a smoking device proposed by the embodiment of the present utility model.

[0024] Figure 10 The second structural schematic diagram of a blower proposed by the embodiment of the present utility model.

[0025] Figure 11 The second implementation manner of a smoking device proposed by the embodiment of the present utility model.

[0026] Figure 12 The structural schematic diagram of the air layer of the blower proposed by the embodiment of the present utility model. Detailed implementation manners

[0027] To further understand the content of the present utility model, the present utility model will be described in detail with reference to the accompanying drawings and embodiments.

[0028] The following further elaborates on the present application in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are merely for explaining the relevant utility model and not for limiting the utility model. Additionally, it should be noted that for the sake of description, only the parts related to the utility model are shown in the drawings. The terms "first", "second", etc. in the present utility model are set for the convenience of describing the technical solution of the present utility model and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present utility model. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installation", "connection", "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradiction or conflict, and all are within the scope of protection required by the present utility model.

[0029] Embodiment 1

[0030] Combined with the attached Figures 1-7 , this embodiment proposes a fan, which includes a housing. The housing includes an air duct front plate 10, an air duct rear plate 11, and a shroud 12 disposed along the edge of the air duct front plate 10 or the air duct rear plate 11. The shroud 12 is connected between the air duct front plate 10 and the air duct rear plate 11; an air inlet 100 is provided on the air duct front plate 10, and an air outlet 102 is also provided on the housing; a motor 13 and an impeller 14 are provided at the air inlet 100 of the housing. The output end of the motor 13 is drivingly connected to the impeller 14, and a collector 15 is fixedly provided at the air inlet 100; the air duct front plate 10 and the air duct rear plate 11 are disposed obliquely relative to each other, so that the distance between the air duct front plate 10 and the air duct rear plate 11 gradually increases from the bottom to the top.

[0031] A blower in this embodiment, through the improvement of the blower structure, the air duct front plate 10 and the air duct rear plate 11 are arranged obliquely relative to each other, so that the distance between the air duct front plate 10 and the air duct rear plate 11 gradually increases from the bottom to the top, which can reduce the space occupation in the cooking area near the stove top, and at the same time increase the space occupation in the non-cooking area near the stove top. On the basis of reasonably using the cooking space, the air volume and air pressure of the blower are further improved, effectively enhancing the cooking experience.

[0032] Combined with the attached Figure 3 , in this embodiment, the motor 13 preferably adopts an outer rotor motor 13 with a flat structure, or a flat inner rotor motor 13 can also be adopted. The impeller 14 preferably adopts an impeller 14 with a flat large diameter. Thus, the size of the blower can be reduced as much as possible while ensuring the air volume and air pressure.

[0033] In order to ensure that the air volume of the blower is large enough to ensure the smoking effect, it is necessary to expand the contour line of the blower. However, for traditional blowers, whose contour is a volute structure, when selecting a large blower, the volute structure will expand synchronously in all directions, which may cause the top of the blower or the top of the smoking device to penetrate into the interior of the wall cabinet.

[0034] Therefore, in order not to occupy the space of the wall cabinet and at the same time make the height dimension of the smoking device equipped with this blower as small as possible, as shown in the attached Figure 2 、 3 、5 and 10, in one embodiment, a horizontal plane 120 is provided at the top or bottom of the shroud 12, so that the top or bottom of the housing constitutes a flat cut surface, which can reduce the occupation of the height space. And, combined with the situation that the air duct front plate 10 and the air duct rear plate 11 are arranged obliquely relative to each other in the foregoing embodiment, the local space in the thickness direction of the top of the blower is increased, compensating for the air volume loss caused by the excision in the height direction of the blower. According to the actual measurement results, under the same height, the air volume of the blower in this embodiment is increased by about 20% compared with the traditional blower system.

[0035] Attached Figure 5 is an embodiment of the blower contour line, in which the outer diameter of the impeller 14 is φ375mm and the inner diameter is φ328mm. Attached Figure 5 As a preferred embodiment, the profile line a at the air outlet 102 is tangent to the inner diameter of the impeller 14, so as to obtain a better air outlet effect.

[0036] During the operation of the blower, noise will inevitably be generated. To improve the noise reduction effect, combined with the attached Figure 3In one embodiment, a noise reduction plate 16 is fixedly arranged on at least one side of the impeller 14 in the casing. The noise reduction plate 16 is located on the side of the enclosure 12 facing the impeller 14. A noise reduction cavity is arranged between the noise reduction plate 16 and the enclosure 12. The noise reduction plate 16 is densely covered with a number of through holes connected to the noise reduction cavity. Therefore, the noise reduction effect of the fan can be effectively achieved by setting the noise reduction cavity. Figure 3 In the embodiment, noise reduction plates 16 are provided on both sides of the fan housing, that is, noise reduction cavities are provided on both sides of the housing, so noise reduction can be better achieved.

[0037] According to actual calculations, the noise reduction effect of the noise reduction cavity is related to the diameter d of the through hole on the enclosure 12, the through hole ratio p, the thickness H of the air layer behind the enclosure 12 (the air layer can be referred to in the attached Figure 12 ), the thickness t of the enclosure 12 are closely related. Generally, the through hole diameter d can be 0.5-2mm, the through hole rate p can be 1%-3%, the air layer thickness H on the rear side of the enclosure can be 20-43mm, and the thickness t of the enclosure can be 0.3-0.6mm. In one embodiment, the through hole size d=2mm, the through hole rate p=1.8%, the air layer thickness H on the rear side of the enclosure 12=43mm, and the thickness t of the enclosure 12=0.6mm. In this case, not only can the process be implemented at a low cost, but the sound absorption coefficient is also large, the sound absorption coefficient of the center frequency is above 0.9, and the sound absorption frequency band is also wide, which has a certain sound absorption effect on noise between the frequencies of 500Hz and 8000Hz. If there is a better processing technology, in a more optimal embodiment, the through hole size d=0.5, the thickness t of the enclosure 12=0.3, and the air layer thickness H on the rear side of the enclosure 12=43mm, then a better sound absorption effect will be achieved.

[0038] In a further embodiment, noise reduction cotton of various components may also be arranged in the noise reduction chamber to further enhance the noise reduction effect.

[0039] The fan of this embodiment is provided with a collector 15, and the collector 15 can be assembled through a plurality of fixing holes located on one side of the inlet end surface 151. Figure 6 and 7 In one embodiment, the collector 15 is provided with an outlet end face 150 on the side facing the impeller 14, and the outlet end face 150 is parallel to the end face of the impeller 14. The side of the collector 15 away from the outlet end face 150 is an inlet end face 151, and the inlet end face 151 is inclined relative to the outlet end face 150 so that the inlet end face 151 is parallel to the air duct front plate 10, thereby adapting to the structure of the fan that is narrow at the bottom and large at the top.

[0040] Further, a plurality of flow guiding plates 152 arranged in a circumferential array are provided on the air collector 15. The flow guiding plates 152 extend from the middle of the air collector 15 to the edge and are inclined. The inclination direction of the flow guiding plates 152 is opposite to the rotation direction of the impeller 14. In a more preferred embodiment, the inclination angle of the flow guiding plates 152 is 30° - 45°. Thus, the flow guiding plates 152 can effectively increase the air volume of the fan and reduce the eddy current noise at the inlet of the air collector 15.

[0041] In addition, in other embodiments, a plurality of rectifying rings 153 are provided on the air collector 15 and are distributed step by step from the center to the outside. There is a spacing between any two adjacent rectifying rings 153. On the one hand, the rectifying rings 153 have the effect of guiding the air flow. On the other hand, in combination with the arrangement of the aforementioned flow guiding plates 152, the rectifying rings 153 can play a role in mechanical safety protection, preventing fingers or sundries from reaching into the inside of the fan when the fan is operating.

[0042] Embodiment 2

[0043] Combined with the attached Figures 1-11 , this embodiment provides a smoking device, including a fan described in Embodiment 1, as well as a machine head composed of a housing 20 and a back plate 21, an air outlet hood 22, and a smoke pipe 23; an inlet for smoke is provided on the housing 20, and the inlet for smoke is communicated with the air inlet 100. The distance between the part of the housing 20 where the inlet for smoke is provided and the back plate 21 gradually increases from the bottom to the top; the fan is located inside the machine head, and the smoke pipe 23 is connected to the air outlet 102 on the upper side or the lower side of the fan through the air outlet hood 22.

[0044] Combined with the attached Figure 8 and 9 , in this embodiment, the smoking device is directly installed on the cooking tabletop and is located below the wall cabinet, ensuring the complete use of the wall cabinet. In this embodiment, the smoking device can exhaust air downward. The air outlet 102 is preferably connected to a flat square smoke pipe 23. The smoke pipe 23 can occupy only about 180 mm of the space inside the base cabinet, so that the front side of the base cabinet also has better utilization, and cooking appliances such as a disinfection cabinet or a steam oven can still be installed in the cabinet below the cooking range.

[0045] Moreover, the inlet for smoke of the machine head is inclined upward and toward the side close to the cooking area, reducing the horizontal distance between the inlet for smoke and the cooking area. Without affecting the operation of the cooking area, the requirement for the fan in the machine head to inhale oil fume is reduced, and the oil fume can be inhaled into the machine head faster and better, ensuring a better oil fume suction effect.

[0046] Combined with the attached Figure 10 and 11, a blower applicable to the top - exhaust type and a corresponding smoking device are further proposed. The structure of the blower is basically the same as that of Embodiment 1. The air outlet 102 is located at the top of the housing, and the plane is located at the bottom of the blower. The smoke pipe 23 is connected to an external smoke exhaust facility or environment through the wall - mounted cabinet, so as to ensure the complete use of the bottom cabinet.

[0047] The present utility model and its implementation manners are schematically described above. The description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present utility model, creatively design structural manners and embodiments similar to the technical solution, they shall fall within the protection scope of the present utility model.

Claims

1. A fan, characterized in that: The invention comprises a shell, wherein the shell comprises an air duct front plate (10), an air duct rear plate (11), and a surrounding plate (12) arranged along the edge of the air duct front plate (10) or the air duct rear plate (11), and the surrounding plate (12) is connected between the air duct front plate (10) and the air duct rear plate (11); the air duct front plate (10) is provided with an air inlet (100), and the shell is also provided with an air outlet (102); A motor (13) and an impeller (14) are provided at the air inlet (100) of the housing, an output end of the motor (13) is drivingly connected to the impeller (14), and a current collector (15) is fixedly provided at the air inlet (100); The air duct front plate (10) and the air duct rear plate (11) are arranged to be inclined relative to each other, so that the distance between the air duct front plate (10) and the air duct rear plate (11) gradually increases from the bottom to the top.

2. A fan according to claim 1, characterized in that: A horizontal plane (120) is arranged at the top or bottom of the enclosure (12) so that the top or bottom of the shell forms a plane section.

3. A fan according to claim 1, characterized in that: The profile line a at the air outlet (102) is tangent to the inner diameter of the impeller (14).

4. A fan according to claim 1, characterized in that: A noise reduction plate (16) is fixedly arranged in the housing on at least one side of the impeller (14) in the circumferential direction; the noise reduction plate (16) is located on the side of the enclosure (12) facing the impeller (14); a noise reduction cavity is arranged between the noise reduction plate (16) and the enclosure (12); and the noise reduction plate (16) is densely covered with a plurality of through holes connected to the noise reduction cavity.

5. A fan according to claim 4, characterized in that: Sound insulation cotton is arranged in the noise reduction cavity.

6. A fan according to claim 1, characterized in that: The collector (15) is provided with an outlet end face (150) on a side facing the impeller (14), the outlet end face (150) being parallel to an end face of the impeller (14), and the collector (15) is provided with an inlet end face (151) on a side facing away from the outlet end face (150), the inlet end face (151) being inclined relative to the outlet end face (150), and the inlet end face (151) being parallel to the air duct front plate (10).

7. A fan according to claim 1 or 6, characterized in that: The collector (15) is provided with a plurality of guide plates (152) arranged in a circumferential array, the guide plates (152) extending from the middle of the collector (15) to the edge and tilting, and the tilting direction of the guide plates (152) is opposite to the rotation direction of the impeller (14).

8. A fan according to claim 1 or 6, characterized in that: The current collector (15) is provided with a plurality of rectifying rings (153) distributed step by step from the center to the outside, and there is a distance between any two adjacent rectifying rings (153).

9. A smoking device, characterized in that: A fan comprising a machine head, an air outlet hood (22) and a smoke pipe (23) consisting of an outer shell (20) and a back plate (21); a smoke inlet is provided on the outer shell (20), the smoke inlet is connected to the air inlet (100), and the distance between the part of the outer shell (20) where the smoke inlet is provided and the back plate (21) gradually increases from bottom to top; the fan is located in the machine head, and the smoke pipe (23) is connected to the air outlet (102) on the upper side or lower side of the fan through the air outlet hood (22).

Images