CN111089318A - Fume exhaust fan - Google Patents
Fume exhaust fan Download PDFInfo
- Publication number
- CN111089318A CN111089318A CN201911403615.8A CN201911403615A CN111089318A CN 111089318 A CN111089318 A CN 111089318A CN 201911403615 A CN201911403615 A CN 201911403615A CN 111089318 A CN111089318 A CN 111089318A
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- Prior art keywords
- air
- fan system
- auxiliary
- main
- range hood
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- 239000003517 fume Substances 0.000 title claims description 11
- 239000000779 smoke Substances 0.000 claims abstract description 32
- 238000009423 ventilation Methods 0.000 claims abstract description 9
- 230000007704 transition Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 235000019504 cigarettes Nutrition 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 5
- 230000000391 smoking effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Images
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a range hood, which comprises a smoke collecting hood, a box body and a fan assembly, wherein the fan assembly comprises a main fan system, an auxiliary fan system and a motor, the main fan system and the auxiliary fan system are driven by the motor to coaxially rotate, an air suction inlet is formed in the upper part of the smoke collecting hood and is communicated with an air inlet of the main fan system, side air channels are formed on two sides of the smoke collecting hood, a central air channel is convexly arranged on the inner wall of the front surface of the smoke collecting hood, a rotational flow surface for rotating airflow flowing through the side air channel is formed on the inner side of the side air channel and the side wall of an air suction area, a first exhaust hole for exhausting air towards the rotational flow surface is formed in the central air channel, a second exhaust hole which is vertically arranged and exhausts air forwards is formed in the side air channel, a ventilation pipeline is arranged in the smoke collecting hood, and an air outlet of the auxiliary fan system and the side air channels are, The central air ducts are communicated. Has high effect of gathering the cigarette.
Description
Technical Field
The invention relates to the field of range hoods, in particular to a range hood.
Background
When the traditional range hood inhales, the air suction range is a hemispherical area, and air in all directions is sucked indiscriminately. The air flow rate at the position of the air suction port is larger in the air suction mode, and the air flow rate far away from the air suction port is rapidly reduced along with the increase of the distance from the air suction port. Therefore, in a short distance below the air suction port, the upward speed of the air becomes very small, so that the upward suction force is insufficient, and the range hood is easily interfered by external factors, such as walking of people, the influence of factors which can disturb the air flow, such as the operation of a fan or cold air, and the like, so that the oil smoke or pollutants are dissipated along with the flowing of disturbed air flow, and the range hood has poor smoke collecting and smoking effects.
Disclosure of Invention
The invention aims to solve one of the problems in the prior art to a certain extent, and therefore the invention aims to provide a range hood with a high smoke collection effect.
The above purpose is realized by the following technical scheme:
a range hood comprises a smoke collection hood, a box body and a fan assembly, wherein the box body is arranged on the smoke collection hood, the fan assembly is arranged in the box body and comprises a main fan system, an auxiliary fan system and a motor, the main fan system and the auxiliary fan system are coaxially driven by the motor to rotate, an air suction opening is formed in the upper portion of the smoke collection hood and is communicated with an air inlet of the main fan system, side air channels are formed in two sides of the smoke collection hood, a central air channel is arranged on the inner wall of the front side of the smoke collection hood in a protruding mode, a rotational flow surface used for enabling air flow flowing through the lateral air channel to rotate is formed in the inner side of the lateral air channel, a first exhaust hole facing the rotational flow surface to exhaust air is formed in the central air channel, a second exhaust hole which is vertically arranged and used for exhausting air forwards is formed in the lateral air channel, and an air conduit is arranged, and the air outlet of the auxiliary fan system is communicated with the side air channel and the central air channel through the ventilating pipeline.
As a further improvement of the present invention, the main blower system includes a main volute and a main wind wheel disposed in the main volute, the auxiliary blower system includes an auxiliary volute and an auxiliary wind wheel disposed in the auxiliary volute, the motor has a first output shaft and a second output shaft, the first output shaft is connected to the main wind wheel, the second output shaft is connected to the auxiliary wind wheel, and the main volute and the auxiliary volute are of an integral structure.
As a further improvement of the invention, a box body front cavity is formed between the front surface of the main fan system and a front plate of the box body, the lower end of the box body front cavity is communicated with an air suction opening of the fume collecting hood, the box body front cavity is communicated with an air inlet of the main fan system, and an air outlet of the main fan system is communicated with an air outlet seat arranged on the box body.
As a further improvement of the invention, a box body back cavity is formed between the back of the auxiliary fan system and a quilt plate of the box body, the upper end of the box body back cavity is communicated with an air inlet arranged on the top of the box body, and the box body back cavity is communicated with the air inlet of the auxiliary fan.
As a further improvement of the invention, the side air ducts are obliquely arranged from top to bottom and forwards on two sides of the smoke collecting hood, at least one row of second exhaust holes which are vertically arranged and can exhaust air forwards are arranged on the side air ducts, and the distance between the second exhaust holes and the edge of the side air duct is less than 20 mm.
As a further improvement of the present invention, the rotational flow surface is an arc surface formed by extending the side air duct to the front surface of the smoke collecting hood, the arc surface is inwardly curved in a direction away from the central air duct, and a cross section of the arc surface in the horizontal direction is linearly enlarged from bottom to top.
As a further improvement of the invention, a transition plane is formed between the arc surface and the central air duct, any horizontal section of the arc surface is a quarter of arc, one end of the arc is tangent to the transition plane, and the other end of the arc is tangent to the air outlet direction of the second air outlet hole.
As a further improvement of the invention, the central air duct extends from the lower part of the suction opening to the bottom of the fume collecting hood, and is vertically arranged on the inner wall of the front surface of the fume collecting hood, and at least one row of first exhaust holes which are vertically arranged and exhaust towards the rotational flow surface are arranged on the two opposite side walls of the central air duct.
As a further improvement of the invention, an opening is arranged at the top of the smoke collecting hood, the opening is communicated with an air outlet of the auxiliary fan system, an air inlet of the ventilation duct is communicated with the opening, and an air outlet of the ventilation duct is communicated with the first exhaust hole on the central air duct and the second exhaust hole on the side air duct.
As a further improvement of the invention, the ventilating duct is formed by connecting a plurality of hard pipes or combining a hose and an adapter.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. the invention provides a range hood which is provided with a main fan system and an auxiliary fan system, wherein the main fan system is used for normally sucking oil smoke, the auxiliary fan system sucks clean air from the top of the range hood, and the clean air is blown out from a first exhaust hole of a central air duct and a second exhaust hole of a side air duct through an internal ventilation duct.
Drawings
FIG. 1 is a schematic structural diagram of a range hood;
FIG. 2 is an exploded view of a range hood;
FIG. 3 is another exploded view of a range hood;
FIG. 4 is another exploded view of a range hood
FIG. 5 is a further exploded view of a range hood;
fig. 6 is a top schematic view of a range hood.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
Referring to fig. 1-6, a range hood of the present invention comprises a smoke collecting hood 1, a box 2 and a fan assembly 3, wherein the box 2 is arranged on the smoke collecting hood 1, the fan assembly 3 is arranged in the box 2, the fan assembly 3 comprises a main fan system 31, an auxiliary fan system 32 and a motor 33, an air suction opening 12 is arranged at the upper part of the smoke collecting hood 1, the air suction opening 12 is communicated with an air inlet of the main fan system 31, side air ducts 13 are formed at both sides of the smoke collecting hood 1, a central air duct 14 is convexly arranged on the inner wall of the front surface of the smoke collecting hood 1, a rotational flow surface 15 for rotating the air flowing through the side air duct 13 is formed at the inner side of the side air duct 13, a first air discharge hole 141 for discharging air towards the rotational flow surface 15 is arranged on the central air duct 14, a second air discharge hole 131 which is vertically arranged and discharges air towards the front is arranged on the side, be equipped with air pipe 16 in the collection petticoat pipe 1, the air outlet of vice fan system 32 passes through air pipe 16 with side wind channel 13 center wind channel 14 is linked together, main fan system 31 includes main spiral case 311 and set up in main wind wheel in the main spiral case 311, vice fan system 32 include vice spiral case 321 and set up in vice wind wheel in vice spiral case 321, the motor has first output shaft and second output shaft, first output shaft with main wind wheel is connected, the second output shaft with vice wind wheel is connected.
The main volute 311 and the auxiliary volute 321 are of an integral structure, and when the range hood operates, the motor rotates to drive the main fan system 31 and the auxiliary fan system 32 to start.
The front face of the main fan system 31 and a front plate of the box body 2 form a front cavity of the box body 2, the lower end of the front cavity of the box body 2 is communicated with the suction opening 12 of the fume collecting hood 1, the front cavity of the box body 2 is communicated with the air inlet of the main fan system 31, and the air outlet of the main fan system 31 is communicated with an air outlet seat on the box body 2. The main fan system 31 is used for the range hood to normally suck oil smoke, and the oil smoke enters the front cavity of the box body 2 through the exhaust inlet 12 of the smoke collecting cover 1, then enters the air inlet of the main fan system 31, and is discharged outwards through the air outlet of the main fan system 31.
A box 2 back cavity is formed between the back of the auxiliary fan system 32 and a plate of the box 2, the upper end of the box 2 back cavity is communicated with an air inlet 21 formed in the top of the box 2, and the box 2 back cavity is communicated with the air inlet of the auxiliary fan. The auxiliary fan system 32 sucks clean air from the top of the range hood, the air enters the back cavity of the box body 2 from the air inlet at the top of the box body 2, and the air passes through the air inlet of the auxiliary fan system 32 and is discharged from the air outlet of the auxiliary fan system 32.
The top of the smoke collecting hood 1 is provided with an opening, the opening is communicated with an air outlet of the auxiliary fan system 32, an air inlet of the ventilation duct 16 is communicated with the opening, and an air outlet of the ventilation duct 16 is communicated with the first exhaust hole 141 on the central air duct 14 and the second exhaust hole 131 on the side air duct 13. The ventilation duct 16 is formed by connecting a plurality of hard pipes or combining a hose and an adapter. After being exhausted from the air outlet of the secondary fan system 32, the air enters the ventilation duct 16 through the top opening of the smoke collecting hood 1, and is blown out through the first exhaust hole 141 on the central air duct 14 and the second exhaust hole 131 on the side air duct 13.
The side wind channel 13 is in 1 both sides of collection petticoat pipe, from top to bottom slope arrangement forward side wind channel 13 is last to be provided with at least one row of vertical layout and the second exhaust hole 131 of giving vent to anger forward, second exhaust hole 131 leaves side wind channel 13 marginal distance is less than 20 mm. In this embodiment, a row of second exhaust holes 131 is disposed on the side air duct 13, and the distance between the second exhaust holes 131 and the edge of the side air duct 13 is 10 mm. The exhaust holes can be arranged in the shapes of round holes, long holes, polygons, star-shaped holes and the like.
The rotational flow surface 15 is an arc surface formed by extending the side air duct 13 to the front surface of the smoke collecting cover 1, the arc surface faces to the direction far away from the central air duct 14 and is bent inwards, and the cross section of the arc surface in the horizontal direction is linearly enlarged from bottom to top. A transition plane 17 is formed between the arc surface and the central air duct 14, any horizontal section of the arc surface is a quarter arc, one end of the arc is tangent to the transition plane 17, and the other end of the arc is tangent to the air outlet direction of the second air outlet hole 131. Side wind channel 13 includes left side wind channel and right side wind channel, is in respectively the left and right sides of collection petticoat pipe 1, left side wind channel to collection petticoat pipe 1 openly extends the left circular arc face that forms, right side wind channel to collection petticoat pipe 1 openly extends the right circular arc face that forms.
The central air duct 14 is extended from the bottom of the exhaust fume collecting hood 1 below the exhaust inlet 12, and is vertically arranged on the front inner wall of the exhaust fume collecting hood 1, at least one row of first exhaust holes 141 which are vertically arranged and face the cyclone surface 15 to give out air are arranged on the two opposite side walls of the central air duct 14. Be provided with one row of first exhaust hole 141 on the central wind channel 14 left side wall be provided with one row of first exhaust hole 141 on the central wind channel 14 right side wall, the right circular arc surface direction exhaust of first exhaust hole 141 on the right side wall, the left circular arc surface direction exhaust of first exhaust hole 141 on the left side wall. The air blown out from the first exhaust holes 141 of the central air duct 14 is blown to the swirling surface 15 through the transition plane 17, and the air is smoothly turned to form a swirling flow. The gas blown out from the second exhaust hole 131 of the side air duct 13 can drive the peripheral gas to flow due to the viscous effect of the gas, so as to accelerate the swirling flow gas discharged from the first exhaust hole 141. The spiral upward air flow can be formed by matching the upward suction force of the air suction opening 12. The rotary absorption gathering effect can be formed before the oil smoke gas is diffused, so that the oil smoke is prevented from diffusing and escaping, and the effect of high-efficiency gathering and smoking is achieved.
The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.
Claims (10)
1. The utility model provides a range hood, includes collection petticoat pipe (1), box (2) and fan subassembly (3), box (2) set up collection petticoat pipe (1) is last, fan subassembly (3) set up in box (2), its characterized in that: the fan assembly (3) comprises a main fan system (31), an auxiliary fan system (32) and a motor (33), the main fan system (31) and the auxiliary fan system (32) are coaxially rotated through the motor (33) in a driving mode, an air suction opening (12) is formed in the upper portion of the exhaust fume collecting hood (1), the air suction opening (12) is communicated with an air inlet of the main fan system (31), side air channels (13) are formed on two sides of the exhaust fume collecting hood (1), a central air channel (14) is convexly arranged on the inner wall of the front face of the exhaust fume collecting hood (1), a rotational flow surface (15) for enabling air flow flowing through the side air channel (13) to rotate is formed on the inner side of the side air channel (13), a first air exhaust hole (141) facing the rotational flow surface (15) is formed in the central air channel (14), a second air exhaust hole (131) which is vertically arranged and is exhausted forwards is formed in the side air channel (13), a ventilating duct (16) is arranged in the smoke collecting hood (1), and an air outlet of the auxiliary fan system (32) is communicated with the side air duct (13) and the central air duct (14) through the ventilating duct (16).
2. A range hood according to claim 1, wherein: the main fan system (31) comprises a main volute (311) and a main wind wheel (312) arranged in the main volute (311), the auxiliary fan system (32) comprises an auxiliary volute (321) and an auxiliary wind wheel (322) arranged in the auxiliary volute (321), the motor (33) is provided with a first output shaft and a second output shaft, the first output shaft is connected with the main wind wheel (312), the second output shaft is connected with the auxiliary wind wheel (322), and the main volute (311) and the auxiliary volute (321) are of an integral structure.
3. A range hood according to claim 1, wherein: the utility model discloses a smoke collecting hood, including main fan system (31) front with form box (2) front chamber between the front panel of box (2), box (2) front chamber lower extreme with inlet scoop (12) the intercommunication of collection petticoat pipe (1), just box (2) front chamber with the air intake intercommunication of main fan system (31), the air outlet of main fan system (31) with set up in air outlet seat on box (2) communicates mutually.
4. A range hood according to claim 1, wherein: a box body (2) back cavity is formed between the back of the auxiliary fan system (32) and a plate of the box body (2), the upper end of the box body (2) back cavity is communicated with an air inlet (21) formed in the top of the box body (2), and the box body (2) back cavity is communicated with an air inlet of the auxiliary fan.
5. A range hood according to any one of claims 1 to 4, wherein: side wind channel (13) collection petticoat pipe (1) both sides, from top to bottom slope arrangement forward be provided with at least one row of vertical layout on side wind channel (13) and second exhaust hole (131) of giving vent to anger forward, second exhaust hole (131) leave side wind channel (13) marginal distance is less than 20 mm.
6. The range hood of claim 5, wherein: the rotational flow surface (15) is that the side air duct (13) to the arc surface that the collection petticoat pipe (1) openly extended to form, the arc surface orientation is kept away from the direction incurving of center air duct (14), the arc surface is at the linear grow from bottom to top of horizontal direction's cross section.
7. A range hood according to claim 6, wherein: form transition plane (17) between the arc surface with central wind channel (14), any horizontal cross-section of arc surface all is the quarter circular arc, the one end of circular arc with transition plane (17) are tangent, the other end with the direction of giving vent to anger of second exhaust hole (131) is tangent.
8. A range hood according to claim 7, wherein: central wind channel (14) are extended by inlet scoop (12) direction collection petticoat pipe (1) bottom direction down, and arrange perpendicularly on the positive inner wall of collection petticoat pipe (1) be provided with on the relative both sides wall of central wind channel (14) at least one row and vertical layout, orientation first exhaust hole (141) that whirl face (15) were given vent to anger.
9. A range hood according to claim 8, wherein: the collection petticoat pipe (1) top is equipped with the opening, the opening with the air outlet intercommunication of vice fan system (32), the air inlet of air pipe (16) with the opening intercommunication, the air outlet of air pipe (16) with first exhaust hole (141) on central wind channel (14) with second exhaust hole (131) on side wind channel (13) intercommunication.
10. A range hood according to claim 9, wherein: the ventilation pipeline (16) is formed by connecting a plurality of sections of hard pipes or combining a hose and an adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911403615.8A CN111089318A (en) | 2019-12-31 | 2019-12-31 | Fume exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911403615.8A CN111089318A (en) | 2019-12-31 | 2019-12-31 | Fume exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111089318A true CN111089318A (en) | 2020-05-01 |
Family
ID=70398523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911403615.8A Pending CN111089318A (en) | 2019-12-31 | 2019-12-31 | Fume exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111089318A (en) |
-
2019
- 2019-12-31 CN CN201911403615.8A patent/CN111089318A/en active Pending
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