CN111043633A

CN111043633A - Fume exhaust fan

Info

Publication number: CN111043633A
Application number: CN201811183574.1A
Authority: CN
Inventors: 卢翼天; 王潭; 胡承杰; 茅忠群; 施旭娜; 李斌
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-10-11
Filing date: 2018-10-11
Publication date: 2020-04-21

Abstract

The invention relates to a range hood, which comprises a shell and a smoke guide plate, wherein the shell is provided with an air inlet, the smoke guide plate can be arranged on the front side of the air inlet of the shell in a deflecting manner, the shell is also provided with a cleaning assembly capable of cleaning the back surface of the smoke guide plate, the cleaning assembly comprises a screw rod, a brush body and an assembly part, the screw rod is vertically and rotatably arranged on the front side of the air inlet of the shell, and the screw rod and the smoke guide plate are arranged in parallel; the brush body is arranged on the screw rod in a way of moving up and down through the nut pair, and the front side surface of the brush body is contacted with the back surface of the smoke guide plate; the assembly part is rotatably arranged on the screw rod and connected with the back surface of the smoke guide plate. The screw of the cleaning component can be rotatably arranged in the middle of the air inlet and is in rotating fit with the smoke guide plate through the assembly part, when the smoke guide plate deflects, the screw is actually used as a central shaft to deflect, so that the cleaning component and the smoke guide plate do not interfere with each other in deflection, and the brush body can be kept in contact with the back of the smoke guide plate no matter what angle the smoke guide plate is, thereby scraping oil smoke.

Description

Fume exhaust fan

Technical Field

The invention relates to a range hood, in particular to a range hood with a smoke guide plate capable of adjusting an angle and automatically cleaning.

Background

Chinese invention, whose patent number is ZL200910096759.3, "a range hood with smoke guide plate" (No. CN101514823B), has a body, a smoke collecting hood and a smoke guide plate, wherein the smoke collecting hood is provided with an air inlet, the smoke guide plate (also called as a rectifying plate) is arranged right opposite to the air inlet and keeps a predetermined distance with the smoke collecting hood, so that a smoke channel for allowing smoke to pass through is formed between the smoke guide plate and the smoke collecting hood, the smoke guide plate in the patent is fixedly arranged, and the position and size of the smoke channel cannot be adjusted. Such a structure easily causes a large negative pressure loss or a waste of air volume.

Chinese patent application publication No. CN108006762A, entitled "a rectifying plate and a range hood using the same" (application No. CN201710531981.6), discloses a structure, in which the rectifying plate includes a rectifying plate body, a secondary plate and a driving mechanism, the rectifying plate body has an opening, the secondary plate is disposed above the opening and can cover or open the opening under the action of the driving mechanism, and the size of the opening on one side of the secondary plate can be adjusted. The structure is favorable for adjusting the deflection structure of the rectifying plate according to the unilateral or bilateral use condition of the gas stove, thereby avoiding negative pressure loss and reducing air quantity waste. However, the back surface of the flow regulating plate is easily adhered with soot, and it is difficult to clean the back surface of the flow regulating plate because the flow regulating plate cannot be detached.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a range hood capable of cleaning a deflectable smoke guide plate aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes casing and leads the cigarette board, the casing has the air intake, lead the cigarette board and locate the air intake front side of casing, its characterized in that with deflecting: still be provided with on the casing and carry out clear clean subassembly to the back of leading cigarette board, this clean subassembly includes

The screw rod is vertically and rotatably arranged on the front side of the air inlet of the shell and is arranged in parallel with the smoke guide plate;

the brush body is arranged on the screw rod in a way of moving up and down through the nut pair, and the front side surface of the brush body is contacted with the back surface of the smoke guide plate; and

the assembly part is rotatably arranged on the screw rod and is connected with the back of the smoke guide plate.

In order to protect the screw rod from being invaded by oil smoke, the cleaning assembly further comprises a protective sleeve capable of covering the periphery of the screw rod, the protective sleeve is provided with an accommodating cavity for accommodating the screw rod, the front side of the protective sleeve is provided with an opening which extends along the length direction of the screw rod and is used for a nut pair to penetrate through so as to be connected with the screw rod, and the front side of the protective sleeve is connected with an assembly part.

Preferably, the two side walls of the protecting sleeve are respectively formed into guide surfaces which gradually incline towards the middle of the protecting sleeve from front to back. The included angle between the guide surface and the front side wall of the protective sleeve is 30-50 degrees. By adopting the structure, the oil fume guiding device can play a role in guiding the oil fume, and when the included angle is smaller than 30 degrees, the protective sleeve can generate an interference effect on the oil fume suction to a certain extent, so that the air quantity is influenced, and the noise is increased; when the included angle is larger than 50 degrees, the flow guide rectification effect is poor, and experiments prove that the included angle is arranged at 30-50 degrees, so that the noise of about 1db can be reduced.

In order to facilitate assembly, the assembly parts are L-shaped, the two assembly parts are respectively arranged at the upper end and the lower end of the screw rod, and each assembly part is provided with a first side plate for the screw rod to rotate and penetrate and a second side plate connected with the protecting sleeve and the smoke guide plate.

Preferably, the brush body comprises a first brush body and a second brush body, and the first brush body and the second brush body can be relatively close to or far away from each other and are arranged on the screw rod up and down. By adopting the structure, good oil scraping effect is achieved.

As an improvement, a liquid storage cavity which can be connected with a liquid supply mechanism is arranged in the middle of the first brush body, a valve which can control whether the liquid storage cavity is opened or not is arranged on the lower wall surface of the first brush body, the valve always tends to be in a closed state, and a trigger part which can open the valve in a state of being close to the first brush body is arranged on the upper wall surface of the second brush body. Adopt such structure, when first brush body and second brush body alternate segregation or have the interval, only lean on the brush body to strike off the oil smoke at the guide smoke board back, but the oil smoke of part striking off can be along with first brush body, second brush body be close to each other and the accumulation between the two, at this moment, trigger part opens the valve, and the washing liquid flows out in the stock solution chamber and is used for decomposing the greasy dirt, is favorable to improving clean effect.

Preferably, a liquid outlet is formed in the lower wall surface of the first brush body, a valve plate hinged to the edge of the liquid outlet is arranged in the liquid storage cavity, an elastic piece capable of enabling the valve plate to be always kept in a covering state relative to the liquid outlet is arranged on the valve plate, and the trigger portion is a convex column capable of being inserted into the liquid outlet to open the valve plate.

Preferably, a storage box for placing a detergent is arranged on the shell, a liquid inlet communicated with the liquid storage cavity is formed in the upper wall surface of the first brush body, and the storage box is connected with the liquid inlet through a liquid guide pipe.

In another improvement, each of the first brush body and the second brush body comprises a first brush arm and a second brush arm, and the first brush arm and the second brush arm are crossed with each other in the middle of the corresponding brush body to enable the corresponding brush body to be in an inverted V-shaped structure. The structure can play a role in guiding the flow of the oil stain or the oil stain decomposed by the washing liquid, and simultaneously increase the contact area of the brush body and the smoke guide plate, thereby improving the cleaning effect.

Preferably, the included angle between the first brush arm and the second brush arm is 5-15 degrees. When this contained angle is less than 5 degrees, the water that has the detergent is difficult to slide down or the speed is not fast enough, is unfavorable for scouring away the grease, and when this contained angle was greater than 15 degrees, the frizing area reduced, no matter strike off in the region below the second brush body initial position, set up the contained angle in above-mentioned angle range, is favorable to improving clean effect.

In the invention, the screw threads of the upper part and the lower part of the screw are opposite in spiral direction, so that the first brush body and the second brush body are relatively close to or separated from each other.

In the above scheme, the housing is provided with a first driving mechanism which is located on the first side of the screw and can drive the smoke guide plate to deflect towards the second side of the screw, and the housing is provided with a second driving mechanism which is located on the second side of the screw and can drive the smoke guide plate to deflect towards the first side of the screw. The structure can adjust the deflection angle of the smoke guide plate according to the use condition of the gas stove so as to reduce the negative pressure loss and save the air quantity.

Preferably, the first driving mechanism and the second driving mechanism have the same structure and respectively comprise a push rod, a connecting sleeve, a connecting shaft and a connecting plate, the push rod is arranged on the shell in a telescopic manner, the front end of the push rod faces the smoke guide plate, the first end of the connecting sleeve can be connected to the front end of the push rod in a manner of being perpendicular to the axial direction of the push rod in a rotating manner, the first end of the connecting sleeve is movably sleeved on the connecting shaft, and the connecting plate is arranged on the front side of the connecting shaft and is connected with the smoke guide plate. By adopting the structure, smooth deflection of the smoke guide plate is realized.

For the convenience of connection, the front end of the push rod is provided with a U-shaped groove, a rotating shaft which is perpendicular to the push rod and axially arranged is arranged in the U-shaped groove, and the first end of the connecting sleeve extends into the U-shaped groove and is connected with the rotating shaft.

In each of the above solutions, the housing is provided with a third driving mechanism capable of driving the screw to rotate.

Preferably, the third driving mechanism comprises a motor, a threaded rod and a gear, the motor is arranged on the shell, the threaded rod is connected to the output end of the motor, and the gear is connected to the threaded rod and is in meshing transmission with the threaded rod.

Compared with the prior art, the invention has the advantages that: the screw of the cleaning assembly can be rotatably arranged in the middle of the air inlet and is in rotary fit with the smoke guide plate through the assembly part, and when the smoke guide plate deflects, the screw is actually used as a central shaft to deflect, so that the cleaning assembly and the smoke guide plate do not interfere with the deflection, and the brush body can be kept in contact with the back of the smoke guide plate no matter what angle the smoke guide plate is, so that the oil smoke is scraped and the cleaning effect is achieved.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the present invention (the smoke guide plate is not deflected);

FIG. 2 is a schematic structural view (deflection of smoke guide plate) of an embodiment of the present invention;

FIG. 3 is a schematic view of the hidden smoke guide plate shown in FIG. 1 (the first brush body is separated from the second brush body);

FIG. 4 is a schematic view of the hidden smoke guide plate shown in FIG. 1 (the first brush body and the second brush body are connected with each other);

FIG. 5 is a schematic structural diagram of a protective cover in an embodiment of the invention;

FIG. 6 is a schematic structural view of a first brush body according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram illustrating the principle of use of a valve according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a third driving structure in an embodiment of the present invention;

fig. 9 is a schematic structural diagram of the first driving mechanism and the second driving mechanism in the embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 9, the range hood of the embodiment includes a housing 1, a smoke guide plate 2 and a cleaning assembly 3, the housing 1 has an air inlet 11, the smoke guide plate 2 is deflectably disposed on the front side of the air inlet 11 of the housing 1, and the cleaning assembly 3 is disposed on the housing 1 and used for cleaning the back of the smoke guide plate 2.

The cleaning assembly 3 of this embodiment includes a screw 31, a brush 32, a fitting member 33 and a protecting sleeve 34, the screw 31 is vertically and rotatably disposed at the front side of the air inlet 11 of the housing 1, the screw 31 is disposed parallel to the smoke guide plate 2, the brush 32 is disposed on the screw 31 by a nut pair 320 so as to be movable up and down, the front side surface of the brush 32 is in contact with the back surface of the smoke guide plate 2, and the fitting member 33 is rotatably disposed on the screw 31 and connected to the back surface of the smoke guide plate 2. In order to protect the screw 31 from oil smoke, the protecting sleeve 34 is covered on the periphery of the screw 31, the protecting sleeve 34 has a receiving chamber 341 for receiving the screw 31, the front side of the protecting sleeve 341 is provided with an opening 342 extending along the length direction of the screw 31 and allowing the nut pair 320 to pass through so as to be connected with the screw 31, and the front side of the protecting sleeve 34 is connected with the assembly member 33. Both side walls of the shield 34 are respectively formed as guide surfaces 343 which are gradually inclined from front to back toward the middle of the shield 34. The included angle a between the guide surface 343 and the front side wall of the protective sleeve 34 is 30-50 degrees. By adopting the structure, the oil fume guiding cover can play a role in guiding the oil fume, and when the included angle a is smaller than 30 degrees, the protective cover 34 can generate an interference effect on the oil fume suction to a certain extent, so that the air quantity is influenced, and the noise is increased; when above-mentioned contained angle a is greater than 50 degrees, the water conservancy diversion rectification effect is not good, and the experiment proves, sets up above-mentioned contained angle a at 30 ~ 50, can reduce the noise about 1 db. For assembly convenience, the assembly member 33 is L-shaped, two assembly members 33 are provided at the upper end and the lower end of the screw 31, respectively, and the assembly member 33 has a first side plate 331 for the screw 31 to rotate through and a second side plate 332 connected to the protecting cover 34 and the smoke guide plate 2.

In this embodiment, the brush body 32 includes a first brush body 321 and a second brush body 322, the screw threads of the upper portion and the lower portion of the screw 31 are opposite in spiral direction, and the first brush body 321 and the second brush body 322 can be arranged on the screw 31 up and down in a relatively close or far manner. The middle part of the first brush body 321 is provided with a liquid storage cavity 3210 which can be connected with the liquid supply mechanism, the lower wall surface of the first brush body 321 is provided with a valve 323 which can control whether the liquid storage cavity 3210 is opened or not, the valve 323 always tends to be closed, and the upper wall surface of the second brush body 322 is provided with a trigger part 3221 which can open the valve 323 under the state of being close to the first brush body 321. With such a structure, when the first brush 321 and the second brush 322 are separated from each other or have a distance, only the brushes scrape off the oil smoke on the back of the smoke guide plate 2, but part of the scraped oil smoke will be accumulated between the first brush 321 and the second brush 322 along with the mutual approach of the two brushes, at this time, the trigger 3221 opens the valve 323, and the cleaning solution flows out from the liquid storage cavity 3210 and is used for decomposing the oil stains, which is beneficial to improving the cleaning effect. A liquid outlet 3211 is formed in the lower wall surface of the first brush body 321, a valve plate 3212 hinged to the edge of the liquid outlet 3211 is disposed in the liquid storage cavity 3210, an elastic member is disposed on the valve plate 3212 to enable the valve plate to always cover the liquid outlet 3211, and the trigger portion 3221 is a protruding column capable of being inserted into the liquid outlet 3211 to open the valve plate 3212. The casing 1 is provided with a storage box 35 for placing detergent, the upper wall surface of the first brush body 321 is provided with a liquid inlet communicated with the liquid storage cavity 3210, and the storage box 35 is connected with the liquid inlet through a liquid guide tube 36.

The first brush body 321 and the second brush body 322 of the present embodiment each include a first brush arm 301 and a second brush arm 302, and the first brush arm 301 and the second brush arm 302 cross each other at the middle portion of the corresponding brush body to form the corresponding brush body into an inverted V-shaped structure. The structure can play a role in guiding the flow of the oil stain or the oil stain decomposed by the washing liquid, and simultaneously increase the contact area of the brush body and the smoke guide plate, thereby improving the cleaning effect. The included angle b between the first brush arm 301 and the second brush arm 302 is 5-15 degrees. When this contained angle b is less than 5 degrees, the water that has the detergent is difficult to slide down or fast not fast enough, is unfavorable for scouring away the grease, and when this contained angle b was greater than 15 degrees, the frizing area reduced, no matter scrapes off in the region below the second brush body 322 initial position, with the contained angle setting in above-mentioned angle range, is favorable to improving clean effect.

In this embodiment, the housing 1 is provided with a first driving mechanism 4a located at a first side of the screw 31 and capable of driving the smoke guide plate 2 to deflect towards a second side of the screw 31, and the housing 1 is provided with a second driving mechanism 4b located at a second side of the screw 31 and capable of driving the smoke guide plate 2 to deflect towards the first side of the screw 31. The structure can adjust the deflection angle of the smoke guide plate 2 according to the use condition of the gas stove so as to reduce the negative pressure loss and save the air quantity. The first driving mechanism 4a and the second driving mechanism 4b have the same structure, and each of the first driving mechanism 4a and the second driving mechanism 4b comprises a push rod 41, a connecting sleeve 42, a connecting shaft 43 and a connecting plate 44, wherein the push rod 41 can be telescopically arranged on the housing 1, the front end of the push rod is arranged towards the smoke guide plate 2, and a power structure capable of pushing the push rod 41 to move back and forth is arranged behind the push rod. The first end of the connecting sleeve 42 can be connected to the front end of the push rod 41 in a way of rotating in the axial direction of the push rod 41, the first end of the connecting sleeve 42 is movably sleeved on the connecting shaft 43, and the connecting plate 44 is arranged on the front side of the connecting shaft 43 and connected with the smoke guide plate 2. With this structure, smooth deflection of the smoke guide plate 2 is realized. For the convenience of connection, the front end of the push rod 41 is provided with a U-shaped slot 411, a rotating shaft 412 which is arranged perpendicular to the axial direction of the push rod 41 is arranged in the U-shaped slot 411, and the first end of the connecting sleeve 43 extends into the U-shaped slot 411 and is connected with the rotating shaft 412.

The housing 1 of the present embodiment is provided with a third drive mechanism 5 capable of driving the screw 31 to rotate. The third driving mechanism 5 comprises a motor 51, a threaded rod 52 and a gear 53, wherein the motor 51 is arranged on the shell 1, the threaded rod 52 is connected to the output end of the motor 51, and the gear 53 is connected to the threaded rod 31 and is in meshing transmission with the threaded rod 52.

The smoke deflector 2 of this embodiment can deflect about according to the in service behavior of gas-cooker double-range, thereby reduce the negative pressure loss, practice thrift the amount of wind, improve the oil absorption cigarette effect, the screw rod 31 of clean subassembly 3 of this embodiment can locate 11 middle parts of air intake with rotating, and through assembly part 33 and smoke deflector 2 normal running fit, when smoke deflector 2 deflects, in fact use screw rod 31 to deflect as the center pin, consequently, clean subassembly 3 of this embodiment can not take place to interfere with the deflection of smoke deflector 2, no matter what angle smoke deflector 2 is, can both keep brush body 32 and smoke deflector 2 back to contact, thereby strike off the oil smoke, play the cleaning action.

Claims

1. The utility model provides a range hood, includes casing (1) and leads cigarette board (2), casing (1) has air intake (11), lead cigarette board (2) can locate air intake (11) front side of casing (1) with deflecting, its characterized in that: the casing (1) is also provided with a cleaning component (3) capable of cleaning the back of the smoke guide plate (2), and the cleaning component (3) comprises

The screw rod (31) is vertically and rotatably arranged on the front side of the air inlet (11) of the shell (1), and the screw rod (31) is arranged in parallel with the smoke guide plate (2);

the brush body (32) is arranged on the screw rod (31) in a way of moving up and down through a nut pair (320), and the front side surface of the brush body (32) is contacted with the back surface of the smoke guide plate (2); and

and the assembly part (33) is rotatably arranged on the screw rod (31) and is connected with the back surface of the smoke guide plate (2).

2. The range hood of claim 1, wherein: the cleaning assembly (3) further comprises a protective sleeve (34) capable of covering the periphery of the screw rod (31), the protective sleeve (34) is provided with an accommodating cavity (341) for accommodating the screw rod (31), an opening (342) which extends along the length direction of the screw rod (31) and is used for a nut pair (320) to penetrate through to be connected with the screw rod (31) is formed in the front side of the protective sleeve (341), and the front side of the protective sleeve (34) is connected with the assembly part (33).

3. The range hood of claim 2, wherein: two side walls of the protective sleeve (34) are respectively formed into guide surfaces (343) which gradually incline towards the middle of the protective sleeve (34) from front to back.

4. The range hood of claim 3, wherein: the included angle (a) between the guide surface (343) and the front side wall of the protective sleeve (34) is 30-50 degrees.

5. The range hood of claim 2, wherein: the assembly parts (33) are L-shaped, the two assembly parts (33) are respectively arranged at the upper end and the lower end of the screw rod (31), and the assembly parts (33) are provided with a first side plate (331) for the screw rod (31) to rotate to pass through and a second side plate (332) connected with the protecting sleeve (34) and the smoke guide plate (2).

6. The range hood of claim 1, wherein: the brush body (32) comprises a first brush body (321) and a second brush body (322), and the first brush body (321) and the second brush body (322) can be relatively close to or far away from each other and are arranged on the screw rod (31) up and down.

7. The range hood of claim 6, wherein: the middle part of the first brush body (321) is provided with a liquid storage cavity (3210) which can be connected with a liquid supply mechanism, the lower wall surface of the first brush body (321) is provided with a valve (323) which can control whether the liquid storage cavity (3210) is opened or not, the valve (323) always tends to be closed, and the upper wall surface of the second brush body (322) is provided with a trigger part (3221) which can open the valve (323) under the state of being close to the first brush body (321).

8. The range hood of claim 7, wherein: liquid outlet (3211) has been seted up on the lower wall of first brush body (321), be provided with in liquid storage chamber (3210) and articulate valve block (3212) at liquid outlet (3211) edge, be provided with on this valve block (3212) and enable it to remain throughout and close the elastic component of state for liquid outlet (3211) lid, thereby trigger part (3221) is for can inserting the projection of opening valve block (3212) in liquid outlet (3211).

9. The range hood of claim 7, wherein: the cleaning brush is characterized in that a storage box (35) for placing detergent is arranged on the shell (1), a liquid inlet communicated with the liquid storage cavity (3210) is formed in the upper wall surface of the first brush body (321), and the storage box (35) is connected with the liquid inlet through a liquid guide pipe (36).

10. The range hood of claim 6, wherein: the first brush body (321) and the second brush body (322) comprise a first brush arm (301) and a second brush arm (302), and the first brush arm (301) and the second brush arm (302) are crossed with each other in the middle of the corresponding brush body to enable the corresponding brush body to be in an inverted V-shaped structure.

11. The range hood of claim 10, wherein: the included angle (b) between the first brush arm (301) and the second brush arm (302) is 5-15 degrees.

12. The range hood of claim 6, wherein: the screw threads of the upper part and the lower part of the screw rod (31) are opposite in spiral direction.

13. The range hood according to any one of claims 1 to 12, wherein: the smoke guide plate device is characterized in that a first driving mechanism (4a) which is located on the first side of the screw rod (31) and can drive the smoke guide plate (2) to deflect towards the second side of the screw rod (31) is arranged on the shell (1), and a second driving mechanism (4b) which is located on the second side of the screw rod (31) and can drive the smoke guide plate (2) to deflect towards the first side of the screw rod (31) is arranged on the shell (1).

14. The range hood of claim 13, wherein: first actuating mechanism (4a) and second actuating mechanism (4b) structure is the same, all includes push rod (41), adapter sleeve (42), connecting axle (43) and connecting plate (44), push rod (41) can be flexible locate on casing (1) and the front end arranges towards smoke deflector (2), the first end of adapter sleeve (42) can be perpendicular push rod (41) axial pivoted and connect in the front end of push rod (41), the first end activity cover of adapter sleeve (42) is put on connecting axle (43), connecting plate (44) are located the front side of connecting axle (43) and are connected with smoke deflector (2).

15. The range hood of claim 14, wherein: the front end of the push rod (41) is provided with a U-shaped groove (411), a rotating shaft (412) which is perpendicular to the axial direction of the push rod (41) is arranged in the U-shaped groove (411), and the first end of the connecting sleeve (42) extends into the U-shaped groove (411) and is connected with the rotating shaft (412).

16. The range hood according to any one of claims 1 to 12, wherein: and a third driving mechanism (5) capable of driving the screw rod (31) to rotate is arranged on the shell (1).

17. The range hood of claim 16, wherein: the third driving mechanism (5) comprises a motor (51), a threaded rod (52) and a gear (53), the motor (51) is arranged on the shell (1), the threaded rod (52) is connected to the output end of the motor (51), and the gear (53) is connected to the threaded rod (31) and is in meshed transmission with the threaded rod (52).