CN111006282A

CN111006282A - Fume exhaust fan

Info

Publication number: CN111006282A
Application number: CN202010006622.0A
Authority: CN
Inventors: 黄友根; 张静; 李斌; 杨伟刚
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-04-14
Anticipated expiration: 2040-01-03
Also published as: CN111006282B

Abstract

The invention discloses a range hood, which comprises a power system and a smoke collection assembly, wherein the power system comprises a fan frame and a fan arranged in the fan frame, the top of the fan frame is provided with an air outlet, and the range hood is characterized in that: the collection cigarette subassembly is including being located the main part of fan frame below, the main part is located the rear of fan frame, the main part is including the preceding lateral wall and the first back lateral wall of interval arrangement around the main part, form the first inlet channel with the fan intercommunication between preceding lateral wall and the first back lateral wall, the bottom of first inlet channel forms the air intake, from this air intake and air outlet are staggered arrangement side by side. Compared with the prior art, the invention has the advantages that: the air outlet and the air inlet are arranged in parallel in a staggered mode, the direction of exhaust air flow and the direction of suction air flow are staggered and parallel, the mutual influence of exhaust noise and suction noise is reduced to the minimum, mutual direct collision and interference are reduced in the sound transmission process, and the noise is reduced.

Description

Fume exhaust fan

Technical Field

The invention relates to an oil fume purification device, in particular to a range hood.

Background

The range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.

Currently, the common range hoods on the market include a top suction type, a side suction type and a bottom suction type.

The top-suction type range hood adopts the oil smoke rising principle, generates a negative pressure area right above a cooking bench, sucks and exhausts naturally rising oil smoke generated during cooking, and has the advantages of fashionable and concise appearance, larger air volume, larger space suitability and capability of catching oil smoke far away from the cooking bench. The ceiling-mounted range hood disclosed in chinese patent No. 201620847094.0 includes a smoke guide assembly, the smoke guide assembly has a smoke passing opening thereon, and the ceiling-mounted range hood further includes: the hollow case is arranged above the smoke guide component, the case is provided with a smoke inlet and a smoke outlet, and the smoke inlet is communicated with the smoke passing port.

The side-suction type range hood has the advantages that the side-suction type range hood has a power source close to a cooking bench, most of oil smoke close to the cooking bench is sucked away in an arc-shaped mode, the side-suction type range hood is thin in body and not easy to touch during operation, and in a cooking state with small oil smoke amount, due to the fact that the installation height of the side-suction type range hood is low, a negative pressure area is close to a smoke source, and the oil smoke. The side-suction type range hood disclosed in the Chinese patent with the application number of 201310170569.8 comprises a fan system and a smoke collection part arranged obliquely, wherein the fan system is arranged at the rear side of the smoke collection part, the smoke collection part is provided with an air inlet, the fan system adopts a double-sided air inlet fan system, the double-sided air inlet fan system comprises an air outlet, a first air inlet and a second air inlet which are arranged oppositely, the air inlet of the smoke collection part comprises a first air inlet and a second air inlet, air flow flowing in from the first air inlet can flow through the first air inlet, then flow to an air pipe seat through the air outlet, and further is discharged outdoors through an exhaust pipeline.

The suction inlet of the downdraft range hood is closer to the cooking bench, the negative pressure area is close to the smoke source, the path of the movement of the smoke is reduced, and compared with other two forms, the downdraft range hood has a better smoke absorption effect. The range hood disclosed in the chinese patent with application number 201210367856.3, in which the smoke collection chamber can be lifted automatically, includes a casing of the range hood, a wind wheel, a motor, etc. arranged in an air duct, a movable smoke collection chamber capable of lifting up and down is arranged at the rear part of the inner cavity of the casing, the top of the movable smoke collection chamber is connected with the lower end of a lifter, the upper end of the lifter is fixed on a reinforcing rib of the casing, and the top of the movable smoke collection chamber and the side facing the air duct have openings.

The noise is the important problem that the range hood needs to solve, and above-mentioned these prior art, because the propagation of sound is in whole space, and single suction noise (air intake) and exhaust noise (air outlet) exist contained angle (side suction and downdraft) or parallel coincidence (top suction), can form interference and clash in the space promptly, promptly in the in-process of space propagation, can form the overlap, and then lead to the stack of noise.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the range hood aiming at the defects in the prior art, so that the noise can be reduced, and the use experience can be improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes driving system and collection cigarette subassembly, driving system includes fan frame and the fan of setting in the fan frame, the air outlet has been seted up at the top of fan frame, its characterized in that: the collection cigarette subassembly is including being located the main part of fan frame below, the main part is located the rear of fan frame, the main part is including the preceding lateral wall and the first back lateral wall of interval arrangement around the main part, form the first inlet channel with the fan intercommunication between preceding lateral wall and the first back lateral wall, the bottom of first inlet channel forms the air intake, from this air intake and air outlet are staggered arrangement side by side.

For the noise of discharging and admit air noise production interference, the noise increases, avoids simultaneously that the air current inner passage is long, influences the oil absorption cigarette effect, and to influence with the wholeness of cupboard collocation, the top of fan frame, with the air outlet department of correspondence be provided with out the fan housing, the diameter that goes out the exit of fan housing is D2, the horizontal interval between the rear side of air outlet and the preceding lateral wall of main part is B, the horizontal interval between the preceding lateral wall of main part and the first back lateral wall is B1 to satisfy: (B1+ D2)/10< B < (B1+ D2)/3.

In order to facilitate the collection of the smoke, the smoke collection assembly further comprises a smoke collection cover, the main body is arranged on the rear side of the smoke collection cover, an upwards sunken smoke collection cavity is formed on the inner side of the smoke collection cover, and the smoke collection cavity is communicated with the air inlet.

In order to facilitate oil collection, oil cups are arranged on the front side of the bottom end of the first rear side wall and below the air inlet.

In order to facilitate preliminary filtration of oil smoke entering the air inlet, the grease of separation and the grease of main part separation are collected simultaneously, the rear side top in collection smoke chamber is provided with the filter screen, the filter screen extends downwards by the slope of the back side direction oil cup in collection smoke chamber, the rear end of filter screen is located the top of oil cup.

In order to guide the oil smoke conveniently, the separated oil and the oil separated by the main body are collected simultaneously, and the oil cup is convenient to disassemble, clean and manage.

Preferably, the dustcoat has the back lateral wall that is located fan frame rear, form second inlet air channel between second back lateral wall and the fan frame rear side, first inlet air channel and second inlet air channel intercommunication.

Preferably, for making the oil smoke need not turn round, directly being inhaled driving system's air intake, promote oil absorption cigarette efficiency, prevent that inside oil smoke from blockking up and the problem that the suction effect is not good appears, the air intake of the fan in the fan frame faces backwards and communicates with second inlet air channel.

In order to reduce the oil smoke suction path and improve the oil smoke suction effect, the main body is arranged between the second rear side wall of the outer cover and the rear side of the fan frame and can lift up and down relative to the outer cover.

Preferably, the main body and the inner sides of the left and right sides of the outer cover are slidably connected through a sliding rail assembly.

Compared with the prior art, the invention has the advantages that: the air outlet and the air inlet are arranged in parallel in a staggered manner, so that the staggered parallel of the directions of the exhaust air flow and the suction air flow is realized, the mutual influence of the exhaust noise and the suction noise is reduced to the minimum, the mutual direct collision and interference are reduced in the sound transmission process, and the noise is reduced; the oil smoke absorption effect is improved by utilizing the flow guide of the smoke collection cavity and the flow guide plate; through setting up elevation structure, realize that the air intake moves down, the negative pressure zone moves down, has further promoted the oil absorption cigarette effect, and when non-operating condition, accomplish the hiding state, realize the wholeness with the collocation of cupboard.

Drawings

FIG. 1 is a schematic view of a descending state of a range hood according to a first embodiment of the present invention;

fig. 2 is an exploded schematic view of a range hood according to a first embodiment of the present invention;

FIG. 3 is a cross-sectional view of the range hood of FIG. 1;

FIG. 4 is a schematic view of the range hood of FIG. 1 installed in a kitchen;

FIG. 5 is a schematic diagram of a first embodiment of the range hood of the present invention in an ascending state;

FIG. 6 is a schematic view of the extractor hood of FIG. 5 installed in a kitchen;

FIG. 7 is a simplified side view of the range hood of the first embodiment of the present invention in a lowered position of use and in a cooking top;

FIG. 8 is a cross-sectional view of a second embodiment of a range hood of the present invention;

fig. 9 is a schematic view of a range hood according to a third embodiment of the present invention;

fig. 10 is a sectional view of a range hood according to a fourth embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Example one

Referring to fig. 1 to 3, a range hood includes a power system 1 and a smoke collection assembly 2.

The power system 1 includes a fan 11 and a fan frame 12 disposed outside the fan 11, and the fan 11 is the same as a conventional fan system for a range hood, and is generally a centrifugal fan, and includes a volute, an impeller disposed in the volute, and a motor for driving the impeller. An air outlet 121 is formed in the position, corresponding to the air outlet of the fan 11, of the fan frame 12, and an air outlet cover 13 is arranged above the air outlet 121 and used for communicating the air outlet 121 with an external public flue. The main function of the power system 1 is to discharge the oil smoke and air entering the internal oil smoke channel to the public flue. The power system 1 also includes a nacelle 14 disposed about the outer periphery of the wind turbine frame 12.

The smoke collection assembly 2 includes a smoke collection hood 21, an oil cup 22, and a main body 23. The main body 23 is provided at the rear side of the smoke collecting cover 21, and may be integrally formed with the smoke collecting cover 21. The fume collecting hood 21 includes a ceiling plate 211 and a front panel 212 provided at a front side of the ceiling plate 211 to extend downward, and an inner side of the fume collecting hood 21 forms a fume collecting chamber 213 depressed upward.

The main body 23 is flat (flat in the front-rear direction), and the main body 23 includes a front side wall 231 and a first rear side wall 232 spaced apart from the front side wall 231, and both the front side wall 231 and the first rear side wall 232 extend in the longitudinal direction. The bottom end of the front side wall 231 is connected with the rear end of the top plate 211 of the fume collecting hood 21, the bottom end of the first rear side wall 232 is lower than the bottom end of the front side wall 231, and the bottom end of the first rear side wall 232 is provided with an oil cup 22. An air inlet 233 is formed between the bottom end of the front side wall 231 and the first rear side wall 232, and a first air inlet channel 234 is formed between the front side wall 231 and the first rear side wall 232, that is, the air inlet 233 is the bottom end of the first air inlet channel 234. Preferably, the oil cup 22 is located at the front side of the bottom end of the first rear sidewall 232, and may be located below the air inlet 233.

The top of the rear side of the smoke collection chamber 213 is provided with a filter screen 214, the filter screen 214 extends obliquely downward from the rear side of the smoke collection chamber 213 to the oil cup 22, and the rear end of the filter screen 214 is located above the oil cup 22. Therefore, the filter screen 214 is located below the air inlet 233, and the oil smoke can enter the first air inlet channel 234 from the air inlet 233 by the preliminary filtering of the filter screen 214. This arrangement allows grease on both the main body 23 and the screen 214 to collect in the cup 22. The side walls of the smoke collecting chamber 213 formed by the smoke collecting cover 21 and the filter screen 214 are all designed to be inclined planes with the vertical direction, so that the wall attachment effect can be utilized, the flow guiding is better, and the problem that the oil smoke is too large and the oil smoke is too late to be sucked is avoided, thereby playing the role of collecting the smoke. Preferably, the screen 214 is a grill screen.

The outer cover 14 has a rear sidewall 141 at the rear side of the blower housing 12 for mounting to a wall, and a second air intake passage 142 is formed between the second rear sidewall 141 and the rear side of the blower housing 12. The main body 23 corresponds to a space between the second rear sidewall 141 of the outer cover 14 and the rear side of the wind stand 12, the first air intake passage 234 is located below the second air intake passage 142, and the two air intake passages are communicated. The air inlet of the fan 11 in the fan frame 12 faces backwards, i.e. faces the second air inlet channel 142, thereby forming a back suction structure, and the fan 11 is communicated with the first air inlet channel 234 through the second air inlet channel 142. The advantages of this arrangement are: direct suction and direct exhaust, oil smoke is directly sucked into an air inlet of the power system 1 without turning, oil smoke suction efficiency is improved, and the problem that the suction and exhaust effects are poor due to internal oil smoke blockage is solved.

When the depth (the size in the front-rear direction) of the fume collecting hood 21 is preferably less than 350mm, and when the depth is greater than the width (the size in the left-right direction) of the fume collecting hood 21, the height (the size in the up-down direction) of the fume collecting hood 21 is preferably 380-480 mm; when the depth of the fume collecting hood 21 is less than or equal to the width of the fume collecting hood 21, the height of the fume collecting hood 21 is preferably 280-380 mm. Under such a condition, the oil smoke absorption effect can be ensured, the smoke gathering area is ensured, and the problems of sight line blocking and operation experience are improved.

The existing top-suction type range hood is limited by the installation height, when the installation height is high and the oil smoke amount is large, the smoke is easy to generate, meanwhile, most of the household range hoods use double-hole stoves, the stoves are distributed on two sides, and during cooking, high-temperature oil smoke is lifted.

Therefore, the main body 23 and the outer cover 14 of the invention are connected in a sliding way through the slide rail assemblies 24 at the left and right sides inside the outer cover 14, and the main body 23 can be driven to lift relative to the outer cover 14 along the slide rail assemblies 24 by any existing linear driving module. Thereby, the main body 23 is allowed to ascend between the second rear sidewall 141 of the housing 14 and the rear side of the wind frame 12 or descend out between the second rear sidewall 141 of the housing 14 and the rear side of the wind frame 12

Referring to fig. 5 and 6, when the range hood is installed in the cabinet 100, and is located above the cooking bench 200, and is in a non-operating state, the smoke collecting assembly 2 is completely lifted into the cabinet 100, and is in a hidden state, so as to ensure the integrity of matching with the cabinet 100. Referring to fig. 1 and 4, in the working state, the smoke collecting assembly 2 descends to the lower side of the cabinet 100, and the ascending and descending height is adjusted along with different heights of cooking appliances, and meanwhile, the smoke suction effect is improved by utilizing the flow guidance of the smoke collecting cavity 213 of the smoke collecting cover 21.

The range hood can be configured with a kitchen range linkage function or a gesture function, when the kitchen range of a user and the range hood have a linkage function, the kitchen range linkage can be selected, and when the kitchen range of the user and the range hood do not have the linkage function, the range hood can be started by adopting the gesture function.

The air inlet 233 and the air outlet 121 arranged in this way realize the dislocation parallel of the directions of the exhaust air flow and the suction air flow, and the advantages are as follows: the influence between the discharge noise and the suction noise is reduced to the minimum, and the direct collision and interference between the discharge noise and the suction noise are reduced in the sound transmission process, so that the noise is reduced. Compared with the common top-suction range hood, the range hood is also directly opposite to the table top of the cooking bench 200, but due to the existence of the lifting action, the radiation noise of the air inlet is far away from the position of human ears, and meanwhile, the radiation noise is staggered with the exhaust air flow, so that the mutual interference is reduced. Compared with the side-draft and the lower-draft range hoods, the radiation noise of the air inlet is far away from the ear position of a human body, and meanwhile, the radiation noise is staggered with the exhaust air flow, so that the mutual interference is reduced.

Referring to fig. 7, the diameter of the outlet housing 13 is D2, the horizontal distance between the rear side of the connection between the outlet housing 13 and the blower frame 12 (the rear side of the outlet 121 of the blower frame 12) and the front side of the inlet 233 (the front sidewall 231 of the main body 23) is B, and the horizontal distance between the front sidewall 231 and the first rear sidewall 232 of the main body 23 is B1. The range of B is preferably (B1+ D2)/10< B < (B1+ D2)/3, integrating the cabinet 100, the oil smoke absorption effect and the noise experience. B is too small, which causes the interference of exhaust noise and air intake noise, the noise is increased, B is too large, the internal channel of the airflow is long, which affects the oil smoke absorption effect and the integrity of the matching with the cabinet.

The mesa distance of the bottom surface distance top of a kitchen range 200 of collection cigarette subassembly 2 is H, and the height of the pan 300 of the culinary art usefulness of placing on the top of a kitchen range 200 is H1, in order to guarantee oil absorption cigarette effect, simultaneously in order to guarantee user's top pot operation, just so can guarantee that the user does not receive the influence of machine when the culinary art, top pot operation is carried out, when perhaps the user uses the pot culinary art, in order to guarantee that the collection cigarette chamber is held together the cigarette region in the direction of height, need satisfy: 3.5H1> H >1.5H 1.

The degree of depth of collection petticoat pipe 21 is W, and the pan 300 center is for W1 to the degree of depth between the installation wall, in order to guarantee the oil absorption cigarette effect, guarantees that collection smoke chamber 213 holds together the cigarette region in the direction of depth, needs satisfy: w >1.2W1, and in order to ensure the sight line of the user, the user can be ensured not to be influenced by the machine when cooking, and the condition of seeing the dish in the pot needs to be satisfied: 2W1> W.

Example two

Referring to fig. 8, in the present embodiment, the difference from the first embodiment is that a guide plate 215 is used to replace a filter screen 214, the guide plate 215 is integrally formed with the oil cup 22, and extends a certain distance from the top end of the front side of the oil cup 22 to the front and gradually incline upwards without closing the smoke collection chamber 213, and a gap between the guide plate 215 and the top of the smoke collection chamber 213 forms a smoke suction inlet 216. Therefore, an integrated structure of flow guiding and oil guiding is formed, and the disassembly, cleaning and cleaning are convenient.

When the oil fume flow rises, the flow guide of the guide plate 215 leads the air flow to enter the oil fume suction inlet 216, after the air flow enters the oil fume suction inlet 216, under the condensation action in the first air inlet channel 231, large oil drops flow into the inner wall surface of the guide plate 215 facing the main body 23 from the wall surface or the upper part of the first air inlet channel 231, and are guided into the oil cup 22 under the action of the guide plate 215.

EXAMPLE III

Referring to fig. 9, the present embodiment is different from the second embodiment in that the guide plate 215 has two plates arranged side by side on the left and right.

Example four

Referring to fig. 10, in the present embodiment, the difference from the third embodiment is that the fan 11 is a double-intake fan, and two air inlets of the double-intake fan face to the left and the right respectively, so that parallel dislocation of exhaust and intake can be realized, and noise can be reduced.

Claims

1. The utility model provides a range hood, includes driving system (1) and collection cigarette subassembly (2), driving system (1) includes fan frame (12) and fan (11) of setting in fan frame (12), air outlet (121), its characterized in that have been seted up at the top of fan frame (12): collection cigarette subassembly (2) is including main part (23) that is located fan frame (12) below, main part (23) are located the rear of fan frame (12), front side wall (231) and first back lateral wall (232) of interval arrangement around main part (23) including, form between front side wall (231) and first back lateral wall (232) first inlet air channel (234) that communicate with fan (11), the bottom of first inlet air channel (234) forms air intake (233), from this air intake (233) and air outlet (121) are arranged by dislocation side.

2. The range hood of claim 1, wherein: the top of fan frame (12), correspond the department with air outlet (121) and be provided with out fan housing (13), the diameter that goes out the exit of fan housing (13) is D2, the horizontal interval between the rear side of air outlet (121) and the preceding lateral wall (231) of main part (23) is B, the horizontal interval between preceding lateral wall (231) of main part (23) and first back lateral wall (232) is B1 to satisfy: (B1+ D2)/10< B < (B1+ D2)/3.

3. The range hood of claim 1, wherein: collection cigarette subassembly (2) still includes collection petticoat pipe (21), main part (23) set up the rear side at collection petticoat pipe (21), the inboard of collection petticoat pipe (21) forms the collection cigarette chamber (213) of upwards sunken, collection cigarette chamber (213) and air intake (233) intercommunication.

4. The range hood of claim 3, wherein: an oil cup (22) is arranged on the front side of the bottom end of the first rear side wall (232) and below the air inlet (233).

5. The range hood of claim 4, wherein: the rear side top in collection smoke chamber (213) is provided with filter screen (214), filter screen (214) extend to oil cup (22) slope downwardly by the back side in collection smoke chamber (213), the rear end of filter screen (214) is located the top of oil cup (22).

6. The range hood of claim 4, wherein: the top end of the front side of the oil cup (22) extends forwards and upwards in a gradually inclined way for a certain distance to form a guide plate (215), and a gap between the guide plate (215) and the top of the smoke collection cavity (213) forms an oil smoke suction inlet (216).

7. The range hood according to any one of claims 1 to 6, wherein: the outer cover (14) is provided with a rear side wall (141) located behind the fan frame (12), a second air inlet channel (142) is formed between the second rear side wall (141) and the rear side of the fan frame (2), and the first air inlet channel (234) is communicated with the second air inlet channel (142).

8. The range hood of claim 7, wherein: the air inlet of the fan (11) in the fan frame (12) faces backwards and is communicated with the second air inlet channel (142).

9. The range hood of claim 7, wherein: the main body (23) corresponds to the space between the second rear side wall (141) of the outer cover (14) and the rear side of the wind stand (2) and is arranged to be capable of ascending and descending up and down relative to the outer cover (14).

10. The range hood of claim 8, wherein: the main body (23) is connected with the inner sides of the left side and the right side of the outer cover (14) in a sliding mode through a sliding rail assembly (24).