CN111006288A

CN111006288A - Fume exhaust fan

Info

Publication number: CN111006288A
Application number: CN202010007118.2A
Authority: CN
Inventors: 王登强; 田涛; 于克阳; 茅忠群; 诸永定
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: CN111006288B

Abstract

The invention discloses a range hood, which comprises a shell, wherein the front side of the shell is open, a smoke collection assembly comprises a first panel and an air inlet formed in the first panel, the range hood further comprises a movement mechanism for driving the first panel to move between a first position and a second position, the first position of the first panel is the position where the first panel is located at the open position of the front side of the shell, at the moment, the air inlet faces forwards, so that the range hood is in a side suction state, the second position of the first panel is the position where the first panel is located in the shell, and at the moment, the air inlet faces downwards, so that the range hood is in a top suction state. Compared with the prior art, the invention has the advantages that: through setting up the first panel that can rotate in the casing to the rotation of accessible first panel changes range hood's air intake state, with according to the oil smoke concentration size of difference, makes range hood can change the negative pressure zone position and be in assorted side suction state, top suction state or side suction and top suction intermediate state, promotes the oil absorption cigarette effect.

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 has become one of indispensable kitchen appliances in modern families, utilizes the fluid dynamics principle to work, inhales and exhausts oil smoke through a centrifugal fan arranged in the range hood, and uses a filter screen to filter partial grease particles. 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.

The side-draft range hood absorbs most of oil smoke close to a cooking bench in an arc form by using a vortex air pressure principle, so that adverse effects on human health can be reduced, and the suction effect of a power source is basically not reduced because the power source is close to the cooking bench. But the side-draft range hood is easy to block the sight in the cooking process. The air inlet of the top-suction type range hood is far away from a smoke source, so that the range hood cannot well trap smoke when the cooking smoke is large.

For this reason, a range hood combining top suction and side suction has been proposed, which extends downward on the basis of the top suction range hood and is open at the lower part. The range hood disclosed in chinese patent with application number 201810224145.8 combines top smoking and side smoking, and comprises a range hood body, wherein the range hood body comprises a top air suction part and a side air suction part formed by downwards extending the top air suction part close to one end of a wall body, the inside air channel of the top air suction part and the inside air channel of the side air suction part are mutually independent, and simultaneously, all fan sets are arranged on the upper part of the range hood body.

The range hood is characterized in that the suction force of the fan is distributed at the top and the lower air inlets as the fan is unchanged, and the suction force of the fan is not changed, so that the negative pressure of each air inlet is weakened; in addition, the range hood is relatively large in volume compared with top suction and side suction due to the fact that the range hood extends downwards, and is not suitable for small-sized kitchens.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a range hood, aiming at the defects in the prior art, the air inlet position is adjusted along with the oil smoke size, and the oil smoke absorption effect is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes the casing, the front side of casing is uncovered, its characterized in that: the smoke collecting assembly comprises a first panel and an air inlet formed in the first panel, the range hood further comprises a moving mechanism used for driving the first panel to move between a first position and a second position, the first position of the first panel is located at the position of the opening of the front side of the shell, at the moment, the air inlet forwards enables the range hood to be in a side suction state, the second position of the first panel is located at the position of the shell, and at the moment, the air inlet downwards enables the range hood to be in a top suction state.

In order to ensure the rotation of the first panel and prevent the oil smoke caused by the clearance between the first panel and the shell from escaping, the smoke collection assembly further comprises a second panel, the shell comprises a top plate, the second panel comprises a front panel arranged between the front end of the top plate and the top end of the first panel, the front panel and the top plate are respectively connected in a rotating mode, and the rotating shaft of the front panel transversely extends in the left-right direction.

Preferably, the front panel and the top plate are connected through a rotating shaft seat and a connecting shaft, the rotating shaft seat is fixedly arranged on one of the front panel and the top plate, the connecting shaft is arranged on the other one of the front panel and the top plate, and the connecting shaft penetrates into the rotating shaft seat to enable the connecting shaft and the rotating shaft seat to form rotating connection.

In order to prevent the oil smoke caused by the gap between the top plate of the shell and the second panel from escaping, the rotating shaft seat is positioned at the left end and the right end of the front panel or the top plate, the decorative shaft is further arranged between the front panel and the top plate, the two ends of the decorative shaft respectively penetrate into the rotating shaft seat, and the connecting shaft penetrates into the end part of the decorative shaft from the outer side of the corresponding rotating shaft seat and can rotate relatively.

In order to ensure the rotation of the first panel and the second panel and prevent the oil smoke from escaping, the depth of the top plate of the shell is L1, the height of the shell is L2, when the first panel is at the first position, the front panel of the second panel is flush with the first panel, and the inclination angle of the first panel relative to the horizontal direction is a; when the first panel is at the second position, the inclination angle of the first panel relative to the horizontal direction is b, and the length of the first panel is

The front panel of the second panel has a length of

The length of the first panel is the size of the front-back direction when the first panel is at the second position, and the length of the front panel of the second panel is the size of the front-back direction.

Preferably, for the convenience of the first panel rotating according to the established track, the moving mechanism comprises a driving mechanism for driving the first panel to move and a guiding mechanism for limiting the moving track of the first panel, the guiding mechanism comprises a sliding rail arranged in the shell and a sliding block arranged on the first panel, a sliding groove in sliding fit with the sliding block is formed in the sliding rail, and the sliding groove is in an arc shape protruding backwards.

Preferably, actuating mechanism is electric putter, the casing top is provided with box body and fixed bolster, actuating mechanism rotates and sets up on the fixed bolster, the fixed bolster is then connected fixedly with the box body, actuating mechanism's output passes the casing and gets into inside the casing and rotate with first panel and be connected.

In order to be convenient for gather together the cigarette, improve oil absorption cigarette effect and filter effect, collection cigarette subassembly still includes the collection smoke chamber of the sunken formation of the inside direction of casing by the centre of first panel, the air intake is seted up and is being close to the inside one side of casing in collection smoke chamber, air intake department is provided with the filter screen.

In order to improve the cigarette effect of holding together, still including setting up the cigarette board that keeps off in first panel outside one side towards the casing, keep off the board and include the board main part with collection smoke chamber interval arrangement.

In order to automatically control the rotation of the first panel according to the oil smoke concentration, the oil smoke concentration sensor is arranged on the first panel and used for detecting the oil smoke concentration of the corresponding position so as to control the movement mechanism.

Compared with the prior art, the invention has the advantages that: the first panel which can rotate in the shell is arranged, so that the state of an air inlet of the range hood can be changed through the rotation of the first panel, the range hood can be in a side suction state, a top suction state or a side suction and top suction intermediate state which are matched with each other by changing the position of a negative pressure region according to different oil smoke concentrations, and the oil smoke suction effect is improved; the second panel is arranged between the first panel and the top of the shell, so that the oil smoke can be prevented from escaping from a position between the upper part of the first panel and the top of the shell while the first panel is ensured to rotate; the smoke baffle plates are arranged at intervals to form a ring suction state, so that the negative pressure distribution can be further changed, and the oil smoke suction effect can be improved.

Drawings

FIG. 1 is a schematic view of a range hood according to an embodiment of the present invention in a side-draft state;

FIG. 2 is a cross-sectional view of the range hood in a side-draft state in accordance with the present invention;

fig. 3 is an exploded schematic view of a range hood according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion I of FIG. 2;

FIG. 5 is a schematic view of a slider of the range hood according to the embodiment of the present invention;

fig. 6 is an exploded schematic view of a movable panel assembly of the range hood according to the embodiment of the present invention;

FIG. 7 is an enlarged view of portion II of FIG. 2;

FIG. 8 is a schematic view of the range hood according to the embodiment of the present invention in a state of switching from side suction to top suction;

FIG. 9 is a cross-sectional view of the range hood in a side-to-top switching state in accordance with the present invention;

fig. 10 is a schematic view of the range hood according to the embodiment of the present invention in a top-suction state;

fig. 11 is a sectional view of the range hood according to the embodiment of the present invention in a top-suction state;

fig. 12 is a simplified side view of a portion of a range hood in accordance with an 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.

Referring to fig. 1 to 3, a range hood includes a housing 1, a fan frame 2 disposed above the housing 1, a smoke collection assembly 3, and a smoke baffle 4 disposed on the smoke collection assembly 3. The fan frame 2 is used for arranging a fan system (not shown).

The housing 1 includes a top plate 11 extending laterally, side plates 12 extending downward from both left and right sides of the top plate 11, and a rear plate 13 disposed at the rear side of the top plate 11 and the side plates 12. The front end of each side plate 12 extends gradually rearward from top to bottom, thereby making the side plates 12 substantially triangular. The housing 1, which is composed of the top plate 11, the side plates 12 and the rear plate 13, has a structure in which the front side is open.

The smoke collection assembly 3 comprises a first panel 31 matched with the opening of the front side of the shell 1, a smoke collection cavity 32 formed by sinking the middle of the first panel 31 towards the inner direction of the shell 1, an air inlet 33 arranged at one side of the smoke collection cavity 32 close to the inner part of the shell 1, and a filter screen 34 arranged at the air inlet 33. The air inlet 33 may be opened at the middle position of the corresponding side of the smoke collection chamber 32, and the smoke concentration sensors 35 are respectively disposed on the left and right sides of the air inlet 33 on the side of the smoke collection chamber 32. The smoke collection chamber 32 may be tapered from top to bottom.

Smoke collecting component 3 still includes second panel 36, and second panel 36 includes front panel 361 and the side panel 362 that is located the front panel 361 left and right sides, and front panel 361 is rectangular shape, and side panel 362 is the triangle-shaped that extends backward by the side of front panel 361, and a side of side panel 362 is laminated with front panel 361, and front panel 361 and side panel 362 can integrated into one piece.

The second panel 36 is disposed on the first panel 31 on the side close to the top panel 11, and the front panel 361 is connected between the first panel 31 and the front end portion of the top panel 11. Between the second panel 36 and the first panel 31, and between the second panel 36 and the top panel 11, and is a rotational connection such that the second panel 36 is rotatable with respect to rotational axes extending in the left-right direction of the top panel 11 and the first panel 31, respectively. The first panel 31 and the second panel 36 cooperate to close the opening at the front side of the housing 1.

In the present embodiment, referring to fig. 2, 6 and 7, the front panel 361 of the second panel 36 is connected with the top plate 11 through the rotating shaft seat 371 and the connecting shaft 372, wherein the rotating shaft seat 371 is fixedly disposed at each of the left and right ends of one of the front panel 361 of the second panel 36 and the top plate 11 (the second panel 36 in the present embodiment), the connecting shaft 372 is disposed at each of the left and right ends of the other of the second panel 36 and the top plate 11 (the top plate 11 in the present embodiment), and penetrates into the rotating shaft seat 371 from the outer side (the side away from the other rotating shaft seat 371) of the corresponding rotating shaft seat 371, so that the connecting shaft 372 and the rotating shaft seat 371 form a rotational connection, so that the second panel 36 and the top plate 11 can rotate relatively.

In order to prevent the oil smoke from escaping from the gap between the front panel 361 of the second panel 36 and the top plate 11, a decorative shaft 373 is provided at the gap, both ends of the decorative shaft 373 penetrate into the rotating shaft seats 371, respectively, and the connecting shaft 372 penetrates into the end portions of the decorative shaft 373 and can rotate relatively.

Referring to fig. 2, 3 and 6, the front panel 361 of the second panel 36 is pivotally connected to the first panel 31 by the hinge 38, and the second panel 36 and the first panel 31 are each connected to one of the hinge panels of the hinge 38. To allow the second panel 36 and the first panel 31 to be smoothly connected, the hinge 38 may have two, left and right, spaced apart arrangements.

The smoke baffle 4 is arranged on one side of the smoke collection assembly 3 facing the outside of the shell 1, the smoke baffle 4 comprises a plate main body 41, a first bent part 42 extending from the top end of the plate main body 41 to the first panel 31, and a second bent part 43 extending from the bottom end of the plate main body 41 to the first panel 31, wherein the first bent part 42 and the second bent part 43 are respectively connected and fixed with the first panel 31, so that the plate main body 41 and the first panel 31 are arranged at intervals, and an air inlet channel 44 is formed in a gap between the plate main body 41 and the smoke collection cavity 32. Offer the first bar hole 421 of longitudinal extension on the first kink 42, offer the second bar hole 431 of longitudinal extension on the second kink 43, first bar hole 421 has at least two to interval side by side is arranged on horizontal, and second bar hole 431 has at least two, and interval side by side is arranged on horizontal, so that filter the oil smoke and carry out the rectification to the oil smoke.

Referring to fig. 2 to 5, the range hood further includes a moving mechanism capable of driving the smoke collection assembly 3 to rotate, including a driving mechanism 51 and a guiding mechanism 52. Preferably, the driving mechanism 51 is an electric push rod, a box 511 is arranged above the top plate 11 of the housing 1, the driving mechanism 51 is rotatably arranged on a fixed bracket 512, the fixed bracket 512 is fixedly connected with the box 511, and the output end of the driving mechanism 51 penetrates through the top plate 11 to enter the interior of the housing 1 and is rotatably connected with one side of the smoke collection cavity 32 facing the interior of the housing 1. The output end of the driving mechanism 51 and the soot concentration sensor 35 are respectively disposed on both sides of the soot collection chamber 32.

The guide mechanism 52 includes a slide rail 521 disposed on one side of the rear plate 13 facing the inside of the housing 1 and a slider 522 disposed on the first panel 31, a sliding slot 523 is disposed on the slide rail 521, the sliding slot 523 is in an arc shape protruding backwards, and the slider 521 can slide along the sliding slot 523, so as to define a movement track of the smoke collection assembly 3. In this embodiment, the sliding block 522 is further provided with a roller 524, and the roller 524 is in rolling fit with the sliding groove 523, so as to reduce the friction force between the sliding block 522 and the sliding rail 521, and make the movement of the smoke collecting assembly 3 smoother.

Referring to fig. 1 and 2, when the range hood is closed, the oil smoke concentration sensor 35 detects the oil smoke concentration, if the oil smoke concentration is relatively high, and if the oil smoke concentration is always greater than the preset maximum oil smoke concentration a, the side-suction state is maintained, at this time, the front panels 361 of the first panel 31 and the second panel 36 are flush and jointly close the opening on the front side of the housing 1, at this time, the first panel 31 is in the first position, and the side panel 362 of the second panel 36 is located on the outer side of the side plate 12 of the housing 1. The oil smoke enters the smoke collection cavity 32 from the periphery of the smoke baffle 4, enters the shell 1 from the air inlet 33 on the smoke collection cavity 32, and is discharged to the public flue by the fan system in the fan frame 2. In the side-suction state, the smoke barrier 4 makes the negative pressure of the fan system diffuse to both sides.

Referring to fig. 8 and 9, when the oil smoke is small, for example, the oil smoke is between a preset maximum oil smoke concentration a and a minimum oil smoke concentration b, the driving mechanism 51 is started to make the output end of the driving mechanism shrink upward, the smoke collection assembly 3 drives the smoke blocking plate 4 to turn toward the inside of the housing 1, the guiding mechanism 52 defines the motion track of the smoke collection assembly 3, the lower end of the first panel 31 slides upward along the sliding rail 521, the upper end of the first panel rotates relative to the second panel 36, and simultaneously the second panel 36 is driven to rotate a certain angle relative to the top plate 11 of the housing 1, so that the first panel is in a state between side suction and top suction.

Referring to fig. 10 and 11, when the oil smoke is continuously reduced until the oil smoke is less than the preset minimum oil smoke concentration b, the driving mechanism 51 continues to drive the smoke collection assembly 3 to turn over until the air inlet 33 faces downward, at which time the first panel 31 is at the second position, the smoke blocking plate 4 is nearly horizontal, and is in a top suction state, at which time the front panel 361 of the second panel 36 is nearly vertical to the top plate 11 of the housing 1, and the edge of the side panel 362 is nearly parallel to the front end of the side plate 12 of the housing 1 without gap, so as to prevent the oil smoke from escaping from the tops of both sides. In the top suction state, the smoke baffle 4 is equivalent to a ring suction plate of the existing common top suction type range hood, and can change the negative pressure distribution.

Referring to fig. 12, in order to ensure the operation of the smoke collection member 3, the following conditions need to be satisfied. A is the front end of the top plate 11, F is the rear end of the top plate 11, and the length L of AF (straight line extending in the front-rear direction)₁The depth of the top plate 11, i.e. the depth of the whole range hood is shown. H is the bottom end of the back plate 13, FH is on the same vertical line, and the length L of FH₂I.e. the height of the rear panel 13, i.e. the height of the extractor hood housing 1. In the side suction state, the inclination angle of the first panel 31 with respect to the horizontal direction is a, and in the top suction state, the inclination angle of the first panel 31 with respect to the horizontal direction is b (high front and low back) due to the oil guiding function. The AE section is the front panel 361 of the second panel 36 in the side suction state, the AB section is the front panel 361 of the second panel 36 in the top suction state, the BC section is the first panel 31 in the side suction state, the DE section is the first panel 31 in the top suction state, and the EG section is a horizontal plane. To realize the above motion form, the relationship should be satisfied: DE cos b-L1, (AB + BC) sin a-L2, AB AE, BC DE, from which the length of the first panel 31 is derived

Length of front panel 361 of second panel 36

The initial state of the range hood can also adapt to the habit of the user, if the initial state is a top suction state, when the oil smoke increases, the range hood is gradually in an intermediate state of side suction and top suction, and when the oil smoke continuously increases, the range hood is finally switched to the side suction state, and in the process, only the driving mechanism 51 needs to move reversely.

The function of one key can be set, when a user is steaming food, the function of one key top suction can be opened due to the fact that the space of the food steamer needs to be made away, and the function of one key side suction can be opened if the user wants to experience strong wind power.

Claims

1. The utility model provides a range hood, includes casing (1), the front side of casing (1) is uncovered, its characterized in that: collection cigarette subassembly (3) include first panel (31) and set up air intake (33) on first panel (31), range hood is still including being used for driving the motion of first panel (31) between primary importance and second position, the primary importance of first panel (31), do primary importance (31) are located the position of the uncovered department of casing (1) front side, this moment air intake (33) forward and make range hood be the side-draught state, the second place of first panel (31), do first panel (31) are located the position in casing (1), this moment air intake (33) are down and make range hood be the top-draught state.

2. The range hood of claim 1, wherein: the smoke collecting assembly (3) further comprises a second panel (36), the shell (1) comprises a top plate (11), the second panel (36) comprises a front panel (361) arranged between the front end of the top plate (11) and the top end of the first panel (31), the front panel (361) is rotatably connected with the top plate (11) and the front panel (361) and the first panel (31) respectively, and the rotating shaft of the front panel (361) transversely extends in the left-right direction.

3. The range hood of claim 2, wherein: connect through pivot seat (371) and connecting axle (372) between front panel (361) and roof (11), fixed being provided with pivot seat (371) on one of them of front panel (361) and roof (11), connecting axle (372) set up on another of front panel (361) and roof (11), connecting axle (372) penetrate in pivot seat (371) and make connecting axle (372) and pivot seat (371) constitute and rotate the connection.

4. The range hood of claim 3, wherein: the pivot seat (371) is located the both ends about front panel (361) or roof (11), still be provided with between front panel (361) and roof (11) and decorate axle (373), the both ends of decorating axle (373) penetrate pivot seat (371) respectively in, connecting axle (372) penetrate in the tip of decorating axle (373) and can rotate relatively from the outside of corresponding pivot seat (371).

5. The range hood of claim 2, wherein: the depth of a top plate (11) of the shell (1) is L1, the height of the shell (1) is L2, when the first panel (31) is at a first position, a front panel (361) of the second panel (36) is flush with the first panel (31), and the inclination angle of the first panel (31) relative to the horizontal direction is a; when the first panel (31) is at the second position, the inclination angle of the first panel (31) relative to the horizontal direction is b, and the length of the first panel (31) is

The front panel (361) of the second panel (36) has a length of

The length of the first panel (31) is the size of the first panel (36) in the front-back direction when the first panel is at the second position, and the length of the front panel (361) of the second panel (36) is the size of the front panel in the longitudinal direction.

6. The range hood of claim 1, wherein: the movement mechanism comprises a driving mechanism (51) for driving the first panel (31) to move and a guide mechanism (52) for limiting the movement track of the first panel (31), the guide mechanism (52) comprises a sliding rail (521) arranged in the shell (1) and a sliding block (522) arranged on the first panel (31), a sliding groove (523) in sliding fit with the sliding block (522) is formed in the sliding rail (521), and the sliding groove (523) is in an arc shape protruding backwards.

7. The range hood of claim 6, wherein: actuating mechanism (51) is electric putter, casing (1) top is provided with box body (511) and fixed bolster (512), actuating mechanism (51) rotate to be set up on fixed bolster (512), fixed bolster (512) then are connected fixedly with box body (511), the output of actuating mechanism (51) passes casing (1) and gets into inside and rotate with first panel (31) and be connected.

8. The range hood of claim 1, wherein: collection cigarette subassembly (3) still include collection cigarette chamber (32) of the sunken formation of the middle of by first panel (31) to casing (1) inside direction, air intake (33) are seted up and are close to casing (1) inside one side in collection cigarette chamber (32), air intake (33) department is provided with filter screen (34).

9. The range hood of claim 8, wherein: still including setting up in first panel (31) towards the outer one side of casing (1) keep off cigarette board (4), keep off cigarette board (4) including with collection cigarette chamber (32) interval arrangement's board main part (41).

10. The range hood of claim 1, wherein: the smoke collection assembly (3) further comprises a smoke concentration sensor (35) which is arranged on the first panel (31) and used for detecting the smoke concentration at the corresponding position so as to control the movement mechanism.