CN212430960U

CN212430960U - Fume exhaust fan

Info

Publication number: CN212430960U
Application number: CN201922455772.5U
Authority: CN
Inventors: 李永波; 邢行; 姚家前; 李智怀; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-01-29
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a range hood, including collection petticoat pipe, box and fan subassembly, the fan subassembly includes main fan system, auxiliary fan system and motor, main fan system with auxiliary fan system passes through motor drive is coaxial to be rotated collection petticoat pipe upper portion is provided with the inlet scoop, the inlet scoop with main fan system's air intake intercommunication the both sides of collection petticoat pipe form the side wind channel the positive inner wall epirelief of collection petticoat pipe is equipped with central wind channel the inboard of side wind channel the regional lateral wall of induced drafting forms the whirl face that is used for making the rotatory air current that flows through it central wind channel is provided with the orientation the first exhaust hole that the whirl face was given vent to anger be provided with vertical arrangement on the side wind channel and the second exhaust hole of giving vent to anger forward be equipped with air pipe in the collection petticoat pipe, auxiliary fan system's air outlet passes through air pipe with side wind channel, The central air ducts are communicated. Has high effect of gathering the cigarette.

Description

Fume exhaust fan

Technical Field

The utility model relates to a range hood field especially relates 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.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the problems that exist among the prior art to a certain extent, for this reason, the utility model aims to provide a range hood has the height and holds together the cigarette 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 utility model, the main fan system include main spiral case and set up in main wind wheel in the main spiral case, vice fan system include vice spiral case and set up in vice wind wheel in the vice spiral case, 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, main spiral case with vice spiral case structure as an organic whole.

As a further improvement of the utility model, the main blower system openly with form the box front chamber between the front bezel of box, the box front chamber lower extreme with the inlet scoop intercommunication of collection petticoat pipe, just the box front chamber with the air intake intercommunication of main blower system, the air outlet of main blower system with set up in air outlet seat on the box communicates mutually.

As a further improvement of the utility model, the auxiliary fan system back with the box by forming box back of the body chamber between the board, box back of the body chamber upper end with set up in air intake on the box top is linked together, just box back of the body chamber with auxiliary fan's air intake is linked together.

As a further improvement, the side wind channel is in collection petticoat pipe both sides, from top to bottom slope arrange forward be provided with one row at least vertical layout on the side wind channel and the second exhaust hole of giving vent to anger forward, the second exhaust hole leaves side wind channel edge distance is less than 20 mm.

As a further improvement, the rotational flow face does the side wind channel to the smoke collecting hood openly extends the arc surface that forms, the arc surface orientation is kept away from the direction in center wind channel is crooked inwards, the arc surface is at the linear grow from bottom to top of horizontal direction's cross section.

As a further improvement of the present invention, the arc surface and a transition plane is formed between the central air ducts, any horizontal cross section of the arc surface is a quarter circular arc, one end of the circular arc is tangent to the transition plane, and the other end is tangent to the air outlet direction of the second air outlet hole.

As a further improvement, the central air duct is extended from the bottom of the exhaust fume collecting hood through the air suction inlet and is vertically arranged on the inner wall of the front exhaust fume collecting hood, at least one row of vertical arrangement and orientation are arranged on the relative two side walls of the central air duct, and the first exhaust hole for the vortex surface to give out air is formed.

As a further improvement of the utility model the collection petticoat pipe top is equipped with the opening, the opening with the air outlet intercommunication of vice fan system, air pipe's air inlet with the opening intercommunication, air pipe's gas outlet with first exhaust hole on the central wind channel with second exhaust hole intercommunication on the side wind channel.

As a further improvement of the utility model, the ventilation pipeline is formed by connecting a plurality of hard pipes or combining a hose and an adapter.

Compared with the prior art, the utility model discloses an at least including following beneficial effect:

1. the utility model provides a range hood, be provided with main fan system and auxiliary fan system, main fan system is used for range hood normal suction oil smoke, auxiliary fan system draws clean air from cigarette machine top, blow off from the first exhaust hole in central wind channel and the second exhaust hole in side wind channel via inside air pipe, because the air viscosity effect, the air current that first exhaust hole and second exhaust hole blow off can drive peripheral air current and flow together, cooperate with the whirl face, can form the spin-suction effect of gathering together in advance in oil smoke gas diffusion, reach the high efficiency and gather together the effect of smoking.

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. To the embodiment of the present invention, modify or replace some technical features, without departing from the spirit of the present invention, it should be covered in the technical solution scope of the present 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 disposed on the smoke collecting hood 1, the fan assembly 3 is disposed 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 disposed at an upper portion 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 protruded on an inner wall of a front surface of the smoke collecting hood 1, a rotational flow surface 15 for rotating an air flow passing through the side air duct 13 is formed at an inner side of the side air duct 13, a first air discharge hole 141 for discharging air toward the rotational flow surface 15 is disposed on the central air duct 14, a second air discharge hole 131 which is vertically disposed and discharges air forward is disposed on the side air duct 13, 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 322 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 322 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

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.