CN110159558B - Air suction device and range hood - Google Patents
Air suction device and range hood Download PDFInfo
- Publication number
- CN110159558B CN110159558B CN201910572558.XA CN201910572558A CN110159558B CN 110159558 B CN110159558 B CN 110159558B CN 201910572558 A CN201910572558 A CN 201910572558A CN 110159558 B CN110159558 B CN 110159558B
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- China
- Prior art keywords
- cover
- cover body
- volute
- suction device
- side plate
- Prior art date
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Links
- 239000000779 smoke Substances 0.000 claims abstract description 39
- 239000003517 fume Substances 0.000 claims abstract description 31
- 238000002955 isolation Methods 0.000 claims description 29
- 239000000306 component Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000006233 lamp black Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ventilation (AREA)
Abstract
The invention provides an air suction device and a range hood, and relates to the technical field of kitchen appliances. The air suction device comprises a fan and an outer cover, wherein the fan comprises a volute, an impeller arranged in the volute and a driving component connected with the impeller; the outer cover comprises a first cover body and a second cover body, the cover openings of which are arranged in opposite directions and are detachably fixedly connected, the first cover body and the second cover body are used for arranging an air inlet cover of the volute in the air inlet cover, and an air outlet of the volute is communicated with the outside; the bottom of the outer cover is provided with a smoke inlet communicated with the outside. The range hood comprises a fume collecting hood and the air suction device, wherein the fume collecting hood is connected to the bottom of the air suction device, and the inner cavity of the fume collecting hood is communicated with the fume inlet of the air suction device. In the range hood using the air suction device, the fan is convenient to assemble and disassemble, and the use convenience of the range hood is high.
Description
Technical Field
The invention relates to the technical field of kitchen appliances, in particular to an air suction device and a range hood.
Background
The range hood is an electrical appliance widely applied to a kitchen, a fan in the range hood runs to generate negative pressure, the oil smoke on the kitchen side is sucked into the fan, and the oil smoke is conveyed into a public flue through an exhaust pipe, so that the fan is a core component of the range hood, and the air performance of the fan directly determines the pumping effect of the range hood on the oil smoke.
In the existing range hood, a fan is generally arranged in a box body of the range hood, and when the fan is arranged, connection operation is required to be carried out in a narrow space of the box body, so that the operation difficulty is high; in addition, when need wash, maintenance or change to the fan, need take off whole lampblack absorber from the wall to dismantle whole box and just can take out the fan, complex operation uses convenient degree poor.
Namely, the disassembly and assembly difficulty of the fan in the existing range hood is high.
Disclosure of Invention
The invention aims to provide an air suction device and a range hood, which are used for solving the technical problem of high disassembly and assembly difficulty of the range hood fan in the prior art.
The invention provides an air suction device which comprises a fan and an outer cover, wherein the fan comprises a volute, an impeller arranged in the volute and a driving component connected with the impeller; the outer cover comprises a first cover body and a second cover body, the cover openings of the first cover body and the second cover body are oppositely arranged and detachably fixedly connected, the air inlet of the volute is covered in the first cover body and the second cover body, and the air outlet of the volute is communicated with the outside; the bottom of the outer cover is provided with a smoke inlet communicated with the outside.
Further, the first cover body is covered on the left side plate of the volute and is detachably fixedly connected with the left side plate; the second cover body is covered on the right side plate of the volute and is detachably fixedly connected with the right side plate; the bottoms of the first cover body and the second cover body are both provided with openings, and the openings at the bottoms of the first cover body and the second cover body jointly form the smoke inlet.
Further, the edge of the left side plate is surrounded by a plurality of linear edge bodies, and the connecting edge of the first cover body is correspondingly connected with the edge of the left side plate;
And/or the edge of the right side plate is surrounded by a plurality of linear edge bodies, and the connecting edge of the second cover body is correspondingly connected with the edge of the right side plate.
Further, the top plate of the first cover body is obliquely arranged from left to right upwards; and/or the top plate of the second cover body is obliquely arranged from right to left and upwards.
Further, an air duct is formed in the volute, the bottom end of at least one of the left side plate and the right side plate of the volute is bent towards the air duct to form a diversion area, and the diversion area is inclined from top to bottom towards the inside of the air duct.
Further, the impeller is connected with the driving component through a driving shaft, and the driving component is positioned outside the volute.
Further, one of the first cover body and the second cover body is connected with a concave isolation cover, the driving part is accommodated in the isolation cover, and the driving shaft penetrates through the isolation cover to be connected with the impeller.
Further, the cover body provided with the isolation cover is provided with a mounting hole, the end part of the cover opening of the isolation cover is provided with a flanging outwards along the circumferential direction of the end part, the isolation cover is inserted into the mounting hole, and the flanging is connected to the edge of the mounting hole.
Further, a first supporting frame is fixedly connected to the side wall of the isolation cover, facing the volute, and the driving shaft penetrates through the first supporting frame and is pivoted to the first supporting frame.
Another object of the present invention is to provide a range hood, which includes a fume collecting hood and the air suction device, wherein the fume collecting hood is connected to the bottom of the air suction device, and the inner cavity of the fume collecting hood is communicated with the fume inlet of the air suction device.
The air suction device and the range hood have the beneficial effects that:
the invention provides an air suction device and a range hood, wherein the air suction device comprises an outer cover serving as a shell and a fan for driving external oil smoke to enter the outer cover and be discharged, and an impeller of the fan is covered in the first cover body and the second cover body of the outer cover; the range hood comprises a fume collecting hood for collecting external fume and the air suction device.
When the range hood is used, a fan of the air suction device is started, a driving part of the fan drives an impeller to rotate, the accommodating cavity is in a negative pressure state, the inner cavity of the fume collecting hood is correspondingly negative pressure, external fume enters the accommodating cavity through the fume collecting hood under the action of internal and external pressure difference, and then flows into the volute through the air inlet and is discharged through the air outlet. When the fan is required to be overhauled or replaced, the first cover body can be detached firstly (the second cover body can be detached firstly), the fan is exposed, and an operator can intuitively overhaul the fan or take down the fan for replacement; similarly, during the installation, can connect the fan on first cover body (or connect the fan on the second cover body), later with the second cover body with the spiral case of fan or first cover body connect can, the dismouting of fan is all comparatively convenient to improve the use convenience of lampblack absorber.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a range hood according to an embodiment of the present invention;
Fig. 2 is a schematic cross-sectional structure diagram of a range hood according to an embodiment of the present invention;
fig. 3 is an exploded structure schematic diagram of a range hood according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an air suction device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a volute in an air suction device according to an embodiment of the present invention.
Icon: 1-a fan; 11-a volute; 111-an air outlet; 112-left side plate; 113-right side plate; 114-a diversion area; 115-an air inlet; 12-impeller; 121-middle plate; 13-a drive member; 131-stator; 132-rotor; 14-a drive shaft; 141-cap; 2-an outer cover; 21-a first housing; 22-a second cover; 23-a smoke inlet; 24-mounting holes; 3-a barrier cover; 31-flanging; 4-a first support frame; 5-fume collecting hood; 6-a second support frame; 7-wind guiding ring.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The embodiment provides an air suction device, as shown in fig. 4, which comprises a fan 1 and a housing 2, wherein the fan 1 comprises a volute 11, an impeller 12 arranged in the volute 11 and a driving component 13 connected with the impeller 12; the outer cover 2 comprises a first cover body 21 and a second cover body 22, wherein the cover openings of the first cover body 21 and the second cover body 22 are arranged in opposite directions and are detachably fixedly connected, the first cover body 21 and the second cover body 22 cover an air inlet 115 of the volute 11 inside, and an air outlet 111 of the volute 11 is communicated with the outside; the bottom of the outer cover 2 is provided with a smoke inlet 23 communicated with the outside.
The embodiment also provides a range hood, as shown in fig. 1-3, comprising a fume collecting hood 5 and the air suction device, wherein the fume collecting hood 5 is connected to the bottom of the air suction device, and the inner cavity of the fume collecting hood 5 is communicated with the fume inlet 23 of the air suction device.
The air suction device and the range hood provided by the embodiment, wherein the air suction device comprises an outer cover 2 serving as a shell and a fan 1 for driving external oil smoke to enter the outer cover 2 and be discharged, and an impeller 12 of the fan 1 is covered in the first cover body 21 and the second cover body 22 of the outer cover 2; the range hood comprises a fume collecting hood 5 for collecting external fume and the air suction device.
When the range hood is used, the fan 1 of the air suction device is started, the driving part 13 of the fan 1 drives the impeller 12 to rotate, the accommodating cavity is in a negative pressure state, the inner cavity of the fume collecting hood 5 is correspondingly in a negative pressure state, external fume enters the accommodating cavity through the fume collecting hood 5 under the action of internal and external pressure difference, then flows into the volute 11 through the air inlet 115 and is discharged through the air outlet 111. When the fan 1 needs to be overhauled or replaced, the first cover body 21 can be detached firstly (the second cover body 22 can be detached firstly), the fan 1 is exposed, and an operator can intuitively overhaul the fan 1 or take down the fan 1 for replacement; similarly, during installation, the fan 1 can be connected to the first cover 21 (or the fan 1 is connected to the second cover 22), and then the second cover 22 is connected to the volute 11 of the fan 1 or the first cover 21, so that the fan 1 is convenient to assemble and disassemble, and the use convenience of the range hood is improved.
Specifically, in the present embodiment, as shown in fig. 1 and 3, the first cover 21 may be covered on the left side plate 112 of the volute 11, and the second cover 22 is covered on the right side plate 113 of the volute 11; the bottoms of the first cover body 21 and the second cover body 22 are both provided with openings, and the openings at the bottoms of the first cover body 21 and the second cover body jointly form a smoke inlet 23. Here, in a specific form of connection between the first cover 21, the second cover 22 and the volute 11, the first cover 21 is connected to the left side plate 112 of the volute 11 to protect the left side portion of the volute 11, a left accommodating cavity is formed between the first cover 21 and the left side plate 112, and an air inlet 115 on the left side plate 112 is located in the left accommodating cavity; the second cover 22 is connected to the right side plate 113 of the volute 11 to protect the right side of the volute 11, a right accommodating cavity is formed between the second cover 22 and the right side plate 113, and an air inlet 115 on the right side plate 113 is located in the right accommodating cavity. Wherein, the first cover 21, the second cover 22 and the coaming of the volute 11 jointly form a housing of the air suction device, a left opening is formed between the bottom end of the first cover 21 and the left side plate 112, a right opening is formed between the bottom end of the second cover 22 and the right side plate 113, and the left opening and the right opening are jointly used as a smoke inlet 23 of the air suction device. When the range hood operates, the fan 1 operates, negative pressure is generated at air inlets 115 on the left side and the right side of the volute 11, external oil smoke enters the fume collecting hood 5, part of the oil smoke enters the left accommodating cavity through the left opening, enters the volute 11 through the left air inlet 115 and is discharged through the air outlet 111; another portion of the oil soot enters the right receiving chamber through the right opening and enters the volute 11 through the right air inlet 115 and is then discharged through the air outlet 111.
The first cover 21 is detachably fixedly connected with the left side plate 112, and the second cover 22 is detachably fixedly connected with the right side plate 113, so that when the fan 1 needs to be overhauled or replaced, the first cover 21 and the second cover 22 can be detached from the left side and the right side respectively, and then the fan 1 is taken down (only one of the covers can be detached to overhaule the exposed fan 1). The range hood is arranged on a kitchen wall, the distance between the top of the range hood and a roof is small, and when the fan 1 outer cover 2 of the range hood cannot be detached from the upper part, the fume collecting hood 5 is required to be detached when the fan 1 is overhauled or replaced in the prior art, and the hands of an operator extend into the fan 1 outer cover 2 to detach the fan 1; in the range hood of this embodiment, the first cover body 21 and the second cover body 22 can be directly disassembled from the side parts, and the operator can intuitively and visually disassemble and assemble the fan 1, so that the disassembly and assembly of the fan 1 are convenient, and the use convenience of the range hood is further improved.
In this embodiment, as shown in fig. 3-5, the edge of the left side plate 112 may be surrounded by a plurality of linear edges, and the connecting edge of the first cover 21 is correspondingly connected with the edge of the left side plate 112; the edge of the right side plate 113 is surrounded by a plurality of linear edges, and the connecting edge of the second cover 22 is correspondingly connected with the edge of the right side plate 113. On the one hand, compared with the arc line or the edge of the fold line, the joints of the first cover body 21 and the left side plate 112 and the joints of the second cover body 22 and the right side plate 113 are all linear, so that the connection matching performance is higher and the position accuracy during connection is easy to ensure; on the other hand, the left side plate 112 and the right side plate 113 of the volute 11 are in regular polygonal shapes, and the air suction device formed by connecting the first cover 21, the second cover 22 and the volute 11 is correspondingly in regular shapes, so that the overall appearance visibility of the air suction device is improved. Specifically, the left side plate 112 and the right side plate 113 may each be approximately rectangular in shape, and the suction device is approximately quadrangular in shape.
In addition to the above-described form, it is also possible to set only the edge of the left side plate 112 to be linear or to set only the edge of the right side plate 113 to be linear.
In this embodiment, as shown in fig. 1 to 3, the top plate of the first cover 21 may be disposed obliquely from left to right; the top plate of the second cover 22 may be disposed obliquely from right to left and upward. Taking the flow state of the oil smoke in the left accommodating cavity of the first cover body 21 as an example for analysis, the oil smoke in the fume collecting cover 5 enters the left accommodating cavity from bottom to top through the left opening, and then deflects rightwards under the suction effect of the air inlet 115 on the left side of the volute 11, so that the flow direction of the oil smoke in the left accommodating cavity is the upper right direction, and part of the oil smoke does not flow into the air inlet 115 when moving upwards to the height of the air inlet 115, and continues to flow upwards to the top of the left accommodating cavity; the top plate of the first cover body 21 is inclined upwards from left to right and is consistent with the inclined direction of the flowing direction of the oil smoke air flow, so that the intensity of collision between the oil smoke air flow and the top plate of the first cover body 21 is reduced, then the oil smoke air flow flows under the flow guiding effect of the top plate and downwards moves into the air inlet 115 under the suction effect of the left air inlet 115, the turbulence of the oil smoke air flow in the accommodating cavity is reduced, the air performance of the fan 1 and the range hood is correspondingly improved, and the noise pollution generated in the operation process of the range hood is reduced. The flow of the lampblack gas flow in the right accommodating cavity of the second cover body 22 is similar to that of the left accommodating cavity, and the top plate of the second cover body 22 can also play a role in guiding the lampblack gas flow in the right accommodating cavity, so that the turbulence condition of the lampblack gas flow and noise pollution generated in the operation process of the lampblack absorber are reduced, and the air performance of the fan 1 and the lampblack absorber is improved.
In addition to the above, only the top plate of the first cover 21 may be provided obliquely, or only the top plate of the second cover 22 may be provided obliquely.
In this embodiment, as shown in fig. 2, 4 and 5, an air duct is formed inside the volute 11, and the bottom end of at least one of the left side plate 112 and the right side plate 113 of the volute 11 is bent towards the air duct to form a diversion area 114, and the diversion area 114 is inclined from top to bottom towards the inside of the air duct. The oil smoke in the fume collecting hood 5 flows upwards under the suction effect of the fan 1, and under the suction effect of the left air inlet 115 and the right air inlet 115, the oil smoke in the left area flows obliquely leftwards, the oil smoke in the right area flows obliquely rightwards, the side plate of the volute 11 is provided with a flow guiding area 114 which inclines downwards inwards from top to bottom, the inclined direction of the flow guiding area 114 is consistent with the inclined direction of the oil smoke flowing into the accommodating cavity, the intensity of collision between the oil smoke flowing into the accommodating cavity and the bottom of the volute 11 can be effectively reduced, and the disturbance of the oil smoke flowing is correspondingly reduced, so that the noise pollution generated in the operation process of the range hood is reduced, and the air performance of the fan 1 and the range hood is improved.
Specifically, the diversion area 114 may be provided on both the left side plate 112 and the right side plate 113 of the scroll 11, or the diversion area 114 may be provided on only the left side plate 112, or the diversion area 114 may be provided on only the right side plate 113.
In this embodiment, as shown in fig. 2, the impeller 12 and the driving part 13 may be connected by a driving shaft 14, and the driving part 13 is located outside the volute 11. When the fan 1 operates, the driving part 13 drives the driving shaft 14 to rotate, and the driving shaft 14 drives the impeller 12 to synchronously rotate with the driving shaft, so that the driving part 13 drives the impeller 12. The driving component 13 is located outside the volute 11, so that the blocking of the driving component 13 to the side air inlet 115 of the volute 11 can be effectively reduced, the flow area of the side air inlet 115 is increased, the suction effect of the side air inlet 115 is improved when the negative pressure in the volute 11 is constant, and the air performance of the fan 1 and the range hood is correspondingly improved.
In addition, the oil smoke concentration in the volute 11 is higher than that in other areas, the driving part 13 is arranged outside the volute 11, the pollution degree of oil smoke is correspondingly reduced, and the normal operation of the driving part 13 can be ensured, and the service life of the driving part is prolonged. Specifically, the driving part 13 may be located at the left side of the scroll case 11 or may be located at the right side of the scroll case 11.
In this embodiment, as shown in fig. 2 to 4, one of the first cover 21 and the second cover 22 may be connected with a recessed isolation cover 3, the driving member 13 is accommodated in the isolation cover 3, and the driving shaft 14 is connected with the impeller 12 through the isolation cover 3. The isolation cover 3 isolates the accommodating cavity into two relatively independent cavities, wherein the oil smoke flows through the cavity between the isolation cover 3 and the volute 11, and the driving part 13 is positioned in the cavity inside the isolation cover 3, so that the contact amount of the oil smoke and the driving part 13 is further reduced, the oil pollution caused by the oil smoke to the driving part 13 is further reduced, and the normal operation of the driving part 13 is correspondingly further ensured, and the service life of the driving part is prolonged. In addition, the driving shaft 14 passes through the isolation cover 3 to be connected with the impeller 12, and the isolation cover 3 can also play a role in supporting and limiting the driving shaft 14, so that the position accuracy and stability of the driving shaft 14 in the rotation process are improved. Specifically, as shown in fig. 4, the driving part 13 may be a DD (DIRECT DRIVER, direct drive) motor, where the DD motor includes a rotor 132 and a stator 131, the stator 131 may be fixed on the isolation cover 3 by a screw or a bolt, and one end of the driving shaft 14 passes through the isolation cover 3 and the stator 131 and is fixedly connected with the rotor 132.
Specifically, in this embodiment, as shown in fig. 2 and 4, the mounting hole 24 may be provided on the cover body provided with the isolation cover 3, the cover mouth end portion of the isolation cover 3 is provided with a flange 31 outwardly in the circumferential direction thereof, the isolation cover 3 is inserted into the mounting hole 24, and the flange 31 is connected at the edge of the mounting hole 24. Here, set up a concrete form of keeping apart lid 3, keep apart lid 3, drive shaft 14 and drive part 13 and all can pass through mounting hole 24 dismouting, and keep apart lid 3 and mounting hole 24 edge connection through turn-ups 31, can directly carry out the dismouting operation to keep apart lid 3 and its inside drive part 13 from the outside, on the basis that realizes keeping apart lid 3 to drive part 13 isolation oil smoke, further improve the convenience of use of device that induced drafts.
In this embodiment, as shown in fig. 2-4, the first support frame 4 may be fixedly connected to the side wall of the isolation cover 3 facing the volute 11, and the driving shaft 14 passes through the first support frame 4 and is pivotally connected to the first support frame 4. The first supporting frame 4 supports and limits the shaft body of the driving shaft 14 between the isolating cover 3 and the impeller 12, so that the occurrence of the swing condition in the rotation process caused by a longer transmission distance of the driving shaft 14 is reduced, the accuracy of the rotation position of the driving shaft 14 is improved, and the driving stability of the driving shaft 14 to the impeller 12 is correspondingly improved. Specifically, the first supporting shaft and the driving shaft 14 can be pivoted through bearings, so that friction resistance formed by rotation of the driving shaft 14 relative to the first supporting frame 4 is reduced, and driving efficiency of the driving part 13 to the impeller 12 through the driving shaft 14 is improved.
In this embodiment, as shown in fig. 2 and 3, the driving component 13 is located at one side of the volute 11, and a second support frame 6 may be disposed on a side plate at the other side of the volute 11, and the driving shaft 14 passes through the second support frame 6 and is pivoted to the second support frame 6. The second supporting frame 6 assists the first supporting frame 4 to support and limit shaft bodies at different positions of the driving shaft 14, so that the rotating position accuracy of the driving shaft 14 and the driving stability of the driving shaft 14 to the impeller 12 are further improved. Specifically, the middle disc 121 may be fixedly connected to the impeller 12, and the driving shaft 14 and the middle disc 121 may be detachably fixedly connected through the cap 141, so as to realize connection between the driving shaft 14 and the impeller 12; the first supporting frame 4 and the second supporting frame 6 are distributed on two sides of the middle disc 121, and respectively support and limit shaft bodies on two sides of the middle disc 121, so that the driving stability of the driving shaft 14 to the impeller 12 is further improved.
In this embodiment, as shown in fig. 2 and 3, a wind guiding ring 7 may be further disposed on a side plate of the volute 11, and the wind guiding ring 7 is surrounded by the wind inlet 115 on the corresponding side. The direction of the oil smoke changes when flowing through the air inlet 115, and the air guide ring 7 guides the oil smoke air flow so as to reduce the occurrence of vortex caused by the contact between the oil smoke air flow and the edge of the air inlet 115, correspondingly improve the air performance of the fan 1 and reduce noise pollution caused by air flow disturbance. Specifically, the wind guiding ring 7 on the same side as the second supporting frame 6 can be used as a connecting ring to be connected with the second supporting frame 6, and the second supporting frame 6 is connected with the volute 11 through the connecting ring.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present invention.
Claims (8)
1. The air suction device is characterized by comprising a fan (1) and a housing (2), wherein the fan (1) comprises a volute (11), an impeller (12) arranged in the volute (11) and a driving component (13) connected with the impeller (12); the outer cover (2) comprises a first cover body (21) and a second cover body (22) which are arranged in opposite directions and detachably fixedly connected, the first cover body (21) and the second cover body (22) cover an air inlet (115) of the volute (11) inside, and an air outlet (111) of the volute (11) is communicated with the outside; the bottom of the outer cover (2) is provided with a smoke inlet (23) communicated with the outside;
when the first cover body (21) or the second cover body (22) is detached, the fan (1) is exposed; the first cover body (21) and the second cover body (22) can be directly assembled and disassembled from the side part of the fan (1), so that an operator can intuitively and visually assemble and disassemble the fan (1);
The impeller (12) is connected with the driving component (13) through a driving shaft (14), and the driving component (13) is positioned outside the volute (11); one of the first cover body (21) and the second cover body (22) is connected with an inwards concave isolation cover (3), the driving part (13) is contained in the isolation cover (3), and the driving shaft (14) penetrates through the isolation cover (3) to be connected with the impeller (12).
2. The suction device according to claim 1, characterized in that the first cover (21) covers the left side plate (112) of the volute (11) and is detachably fixedly connected with the left side plate (112); the second cover body (22) is covered on a right side plate (113) of the volute (11) and is detachably fixedly connected with the right side plate (113); the bottoms of the first cover body (21) and the second cover body (22) are both provided with openings, and the openings at the bottoms of the first cover body and the second cover body jointly form the smoke inlet (23).
3. The suction device according to claim 2, characterized in that the edge of the left side plate (112) is surrounded by a plurality of linear edge bodies, and the connecting edge of the first cover body (21) is correspondingly connected with the edge of the left side plate (112);
And/or the edge of the right side plate (113) is surrounded by a plurality of linear edge bodies, and the connecting edge of the second cover body (22) is correspondingly connected with the edge of the right side plate (113).
4. The suction device according to claim 2, characterized in that the top plate of the first housing (21) is inclined from left to right; and/or the top plate of the second cover body (22) is obliquely arranged from right to left and upwards.
5. The suction device according to any one of claims 1-4, wherein an air duct is formed inside the volute (11), and a bottom end of at least one of a left side plate (112) and a right side plate (113) of the volute (11) is bent toward the air duct to form a diversion area (114), and the diversion area (114) is inclined from top to bottom toward the inside of the air duct.
6. The air suction device according to claim 1, wherein a cover body provided with the isolation cover (3) is provided with a mounting hole (24), a flange (31) is outwards arranged at the end part of a cover opening of the isolation cover (3) along the circumferential direction of the cover opening, the isolation cover (3) is inserted into the mounting hole (24), and the flange (31) is connected at the edge of the mounting hole (24).
7. The air suction device according to claim 1, wherein a first supporting frame (4) is fixedly connected to the side wall of the isolation cover (3) facing the volute (11), and the driving shaft (14) penetrates through the first supporting frame (4) and is pivoted to the first supporting frame (4).
8. A range hood, characterized by comprising a fume collecting hood (5) and an air suction device according to any one of claims 1-7, wherein the fume collecting hood (5) is connected to the bottom of the air suction device, and the inner cavity of the fume collecting hood (5) is communicated with the fume inlet (23) of the air suction device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910572558.XA CN110159558B (en) | 2019-06-27 | 2019-06-27 | Air suction device and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910572558.XA CN110159558B (en) | 2019-06-27 | 2019-06-27 | Air suction device and range hood |
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| Publication Number | Publication Date |
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| CN110159558A CN110159558A (en) | 2019-08-23 |
| CN110159558B true CN110159558B (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910572558.XA Active CN110159558B (en) | 2019-06-27 | 2019-06-27 | Air suction device and range hood |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442312B (en) * | 2020-03-27 | 2022-05-17 | 宁波方太厨具有限公司 | Fume exhaust fan |
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| Publication number | Publication date |
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| CN110159558A (en) | 2019-08-23 |
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