CN209944457U

CN209944457U - Fume exhaust fan

Info

Publication number: CN209944457U
Application number: CN201920379464.6U
Authority: CN
Inventors: 王潭; 唐兴旺; 茅忠群; 施旭娜
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2020-01-14
Anticipated expiration: 2029-03-25

Abstract

The utility model relates to a range hood, which comprises a shell, a first filter screen, a second filter screen, a cleaning brush, a first driving mechanism and a second driving mechanism, wherein the bottom of the shell is provided with an air inlet, the first filter screen covers the air inlet, the second filter screen is arranged on the air inlet and is arranged above the first filter screen at intervals, the cleaning brush can rotate and is arranged above the second filter screen along the length direction of the second filter screen in a reciprocating way, the cleaning brush is contacted with the second filter screen, the first filter screen and the second filter screen which are arranged at intervals up and down are arranged in the utility model, the oil smoke can be filtered for the second time, the filtering effect is improved, meanwhile, the cleaning brush which can simultaneously move back and forth along the length direction or the width direction of the second filter screen and rotate relative to the second filter screen is arranged in the shell, the cleaning brush can rub and remove stubborn oil stains so as to avoid the oil smoke from accumulating on the second, the purifying effect of the range hood is improved.

Description

Fume exhaust fan

Technical Field

The utility model relates to a range hood.

Background

The spiral case, the impeller of the cigarette machine are mostly washd to current lampblack absorber automatically cleaning technique, like the utility model patent of application number CN201610790285, this patent utilizes ultrasonic vibrator to wash parts such as impeller, spiral case. However, the impeller volute needs to be soaked, which easily causes short circuit of the motor; meanwhile, the long-term vibration of the ultrasonic vibrator is easy to shake off the paint blocks on the surfaces of the impellers, dynamic balance is affected, assembling gaps among the motor impellers are easily increased, and potential safety hazards exist.

Chinese utility model patent No. CN 204285570U entitled "a rotating centrifugal oil-fume separation device" (application No. 201420732722.1) discloses a structure, which includes a rotating net disk and a wind wheel, the rotating net disk is installed at the wind wheel wind inlet, the edge of the rotating net disk is connected with the edge of the front ring of the wind wheel or the center of the rotating net disk is connected with the center of the wind wheel or the rotating net disk and the front ring of the wind wheel are integrally formed, the structure can realize oil-fume purification to a certain extent, however, in the using process, the grease adhered on the rotating net disk is naturally removed by the centrifugal action, and the grease adhered on the rotating net disk inevitably can be adhered to the rotating centrifugal oil-fume separation device after long-time use, thereby affecting the filtering performance of the rotating net disk. The invention patent with the application number of CN201710090668 adopts a steam spraying mode to clean the filter screen, and an additional cleaning module is added in the scheme, so that the cost is increased, and the reliability is reduced; meanwhile, the power of the additional module is limited, the cleaning force of the scheme is small, and the cleaning is not thorough.

Moreover, the above existing filter screen self-cleaning structure is all cleaned aiming at the filter screen installed at the air inlet of the fan, and cannot be cleaned aiming at the filter screen at the air inlet of the smoke collecting hood, and in practical application, the filter screen at the air inlet of the smoke collecting hood contacts with oil smoke particles first, so that the accumulated dirt is easier, and if the filter screen is not cleaned for a long time, the filter performance of the range hood is easily influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, thereby provide one kind and can carry out secondary filter to the oil smoke and can carry out self-cleaning to secondary filtration structure and improve purifying effect's range hood.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a range hood, is including the casing that has the air intake, its characterized in that: also comprises

The first filter screen is arranged on the air inlet;

the second filter screen is arranged on the air inlet and is arranged above the first filter screen at intervals;

the cleaning brush can rotate and is arranged above the second filter screen in a manner of moving back and forth along the length direction or the width direction of the second filter screen, and the cleaning brush is kept in contact with the second filter screen;

the first driving mechanism is arranged on the shell and used for driving the cleaning brush to move back and forth along the length or width direction of the second filter screen; and

and the second driving mechanism is used for driving the cleaning brush to rotate.

In the above scheme, first actuating mechanism includes rack, gear, transmission shaft, assembly part, the rack is close to the second filter screen and arranges along length or the width direction of second filter screen, the gear is located the rack top and is engaged with the transmission with this rack, the transmission shaft can be located second filter screen top and first end with the gear is connected with rotating, the second end of transmission shaft can be located on the casing along second filter screen length or width direction round trip movement, the assembly part restraint is on the transmission shaft and is located second filter screen top, the cleaning brush is located on the assembly part. The shell is internally provided with a motor, and an output shaft of the motor is connected with the first end of the transmission shaft. By adopting the structure, the motor can drive the transmission shaft and the gear to rotate, and the gear moves back and forth along the rack, so that the cleaning brush is driven to move back and forth relative to the second filter screen, and the oil smoke accumulated on the surface of the second filter screen is removed by friction.

Preferably, the assembly part is provided with an inner cavity, the middle part of the transmission shaft penetrates through the inner cavity to be arranged, a first bevel gear which is coaxially connected with the transmission shaft and rotates along with the transmission shaft is arranged in the inner cavity, a second bevel gear which is in meshing transmission with the first bevel gear and is vertically arranged on the central axis is further arranged in the inner cavity, the cleaning brush is connected with the lower end of the second bevel gear, and the transmission shaft, the assembly part, the first bevel gear and the second bevel gear jointly form the second driving mechanism. By adopting the structure, the first driving mechanism and the second driving mechanism are integrated, and the cleaning brush can be driven to move back and forth and rotate only by using one motor, so that the cleaning force is improved.

To facilitate connection, the bottom of the second bevel gear has a connecting post extending downwardly and disposed through the bottom of the fitting to which the cleaning brush is connected.

In order to keep the cleaning brush to move back and forth stably, sliding rails which are arranged in parallel with the racks are arranged on two sides of the second filter screen in the shell respectively, and two ends of the transmission shaft are connected to the sliding rails in a sliding mode through sliding blocks respectively.

As the improvement, still be provided with the clean mechanism that can spray the washing liquid on the second filter screen on the casing, this clean mechanism is including the hydrojet pipe that is arranged near the second filter screen at least, and this hydrojet pipe is connected with the washing source and is opened liquid hole on the lateral wall near the second filter screen. This structure can spray the washing liquid on the second filter screen when cleaning brush friction second filter screen, improves clean effect.

Preferably, the cleaning mechanism comprises a liquid guide pipe, a liquid storage tank and a water pump, the liquid spray pipe is connected with the liquid storage tank through the liquid guide pipe, the liquid storage tank is used for storing cleaning liquid, and the water pump is arranged on the liquid guide pipe and provides power for conveying the cleaning liquid. Washing liquid can be put in the liquid storage tank firstly, and the liquid storage tank is changed into clean water after being cleaned for a certain time, so that the washing liquid is washed to protect the surface of the second filter screen from being corroded.

Preferably, the second filter screen is gradually inclined downwards from inside to outside at the edge to form a surrounding edge, the edge of the surrounding edge is connected with the edge of the first filter screen, the second filter screen and the surrounding edge of the second filter screen are provided with smoke inlets, and the size of the smoke inlet on the surrounding edge is larger than that of the smoke inlet on the main body part of the second filter screen. The size of the smoke inlet on the second filter screen is smaller than that of the smoke inlet on the first filter screen. The structure can ensure that all oil smoke passes through the first filter screen and then is filtered by the second filter screen.

Preferably, the liquid spraying pipe is annular and is arranged around the edge of the second filter screen, and the liquid outlet holes are arranged corresponding to the upper surface of the second filter screen.

Compared with the prior art, the utility model has the advantages of: the utility model discloses set up first filter screen, the second filter screen of upper and lower interval arrangement, can carry out the secondary filter to the oil smoke, improve the filter effect, simultaneously, set up length or width direction round trip movement, for second filter screen pivoted cleaning brush that can follow the second filter screen simultaneously in the casing, this cleaning brush can rub the brush to stubborn greasy dirt and remove to avoid the oil smoke to accumulate in a large number on the second filter screen, improve range hood's purifying effect.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a hidden part of a housing in an embodiment of the present invention;

FIG. 3 is a schematic view of the hidden portion assembly of FIG. 2;

fig. 4 is a partial cross-sectional view of an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 4, the range hood of this embodiment includes a housing 1, a first filter screen 2, a second filter screen 3, a cleaning brush 4, a first driving mechanism 5, a second driving mechanism 6, and a cleaning mechanism 7, an air inlet 11 is formed at the bottom of the housing 1, an air outlet 12 is formed at the top of the housing 1, the first filter screen 2 covers the air inlet 11, the second filter screen 3 is disposed on the air inlet 11 and is spaced above the first filter screen 2, the cleaning brush 4 can rotate and is disposed above the second filter screen 3 along the length direction of the second filter screen 3 in a reciprocating manner, the cleaning brush 4 keeps in contact with the second filter screen 3, the first driving mechanism 5 is disposed on the housing 1 and is used for driving the cleaning brush 4 to move back and forth along the length direction of the second filter screen 3, and the second driving mechanism 6 is used for driving the cleaning brush 4.

Specifically, the first driving mechanism 5 includes a rack 51, a gear 52, a transmission shaft 53, and a fitting 54, the rack 51 is disposed on the housing 1 near the second filter screen 3 and along the length direction of the second filter screen 3, the gear 52 is disposed above the rack 51 and is in meshing transmission with the rack 51, the transmission shaft 53 is rotatably disposed above the second filter screen 3 and has a first end connected to the gear 52, a second end of the transmission shaft 53 is disposed on the housing 1 and is capable of moving back and forth along the length direction of the second filter screen 3, the fitting 54 is constrained on the transmission shaft 53 and is located above the second filter screen 3, the transmission shaft 53 is capable of rotating relative to the fitting 54, and the cleaning brush 4 is disposed on the fitting 54. In order to keep the back and forth movement of the cleaning brush 4 stable, the housing 1 is further provided with sliding rails 55 arranged in parallel with the racks 51 on both sides of the second screen 3, respectively, and the second end of the transmission shaft 53 is slidably connected to the corresponding sliding rails 55 through a slider 531. The structure is that the motor 56 is arranged in the housing 1, an output shaft of the motor 56 is connected with a first end of the transmission shaft 53, the motor 56 is connected to the corresponding slide rail 55 in a sliding manner through the slide block 531 at the bottom of the motor 56, the motor 56 can drive the transmission shaft 53 and the gear 52 to rotate, and the gear 52 moves back and forth along the rack 51, so that the cleaning brush 4 is driven to move back and forth relative to the second filter screen 3, and oil smoke accumulated on the surface of the second filter screen 3 is removed by friction.

In this embodiment, the fitting part 54 has an inner cavity through which the middle portion of the transmission shaft 53 is disposed, a first bevel gear 61 coaxially connected to the transmission shaft 53 and rotating with the transmission shaft 53 is disposed in the inner cavity, a second bevel gear 62 driven in mesh with the first bevel gear 61 and having a vertically disposed central axis is further disposed in the inner cavity, the cleaning brush 4 is connected to the lower end of the second bevel gear 62, the bottom of the second bevel gear 62 has a connecting column 621 extending downward and disposed through the bottom of the fitting part 54, and the cleaning brush 4 is connected to the connecting column 621. The transmission shaft 53, the fitting 54, the first bevel gear 61, and the second bevel gear 62 together constitute the second drive mechanism 6. With this structure, the first drive mechanism 5 and the second drive mechanism 6 are integrated, and the cleaning brush 4 can be driven to move back and forth and the cleaning brush 4 can be driven to rotate only by using one motor 56, so that the cleaning force can be improved.

The cleaning mechanism 7 is disposed in the housing 1 and is capable of spraying a cleaning solution onto the second filter screen 3, the cleaning mechanism 7 includes a liquid spraying tube 71, a liquid guiding tube 72, a liquid storage tank 73 and a water pump (not shown), the liquid spraying tube 71 is disposed adjacent to the second filter screen 3, the liquid spraying tube 71 is connected to a cleaning source, and a liquid outlet hole 711 is formed on a side wall adjacent to the second filter screen 3. This structure can spray the washing liquid on second filter screen 3 when cleaning brush 4 rubs second filter screen 3, improves clean effect. The liquid spraying pipe 71 is connected with a liquid storage tank 73 through a liquid guide pipe 72, the liquid storage tank 73 is used for storing cleaning liquid and can be prevented from being arranged outside the shell 1 so as to be convenient for replacing the cleaning liquid, and a water pump is arranged on the liquid guide pipe 72 and provides power for conveying the cleaning liquid. Cleaning solution can be put into the liquid storage tank 73 at first, and after the cleaning for a certain time, the cleaning solution is replaced by clean water to wash the cleaning solution so as to protect the surface of the second filter screen 3 from being corroded.

The second filter screen 3 of this embodiment is formed with surrounding edge 31 by inside and outside downward sloping gradually near the edge, and the border department of this surrounding edge 31 links up with the edge of first filter screen 2 mutually, has all seted up into mouth 30 on second filter screen 3 and its surrounding edge 31, and the mouth 30 size of advancing on the surrounding edge 31 is greater than the mouth 30 size of advancing on the second filter screen 3 main part. The size of the smoke inlet 30 on the second filter screen 3 is smaller than that of the smoke inlet on the first filter screen 2. The structure can ensure that all oil smoke can be filtered by the second filter screen 3 after passing through the first filter screen 2, and the filtering effect is enhanced. The liquid spraying pipe 71 is ring-shaped and arranged around the edge of the second sieve 3, and the liquid outlet holes 711 are arranged corresponding to the upper surface of the second sieve 3.

This embodiment has set up first filter screen 2, second filter screen 3 of upper and lower interval arrangement, can carry out the secondary filter to the oil smoke, improve the filter effect, simultaneously, set up length or width direction round trip movement that can follow second filter screen 3 simultaneously in casing 1, for second filter screen 3 pivoted cleaning brush 4, this cleaning brush 4 can rub the brush to stubborn greasy dirt and remove, in order to avoid the oil smoke to accumulate in a large number on second filter screen 3, improve range hood's purifying effect.

Claims

1. A range hood, including casing (1) that has air intake (11), its characterized in that: also comprises

The first filter screen (2) is arranged on the air inlet (11);

the second filter screen (3) is arranged on the air inlet (11) and is arranged above the first filter screen (2) at intervals;

the cleaning brush (4) can rotate and is arranged above the second filter screen (3) in a manner of moving back and forth along the length direction or the width direction of the second filter screen (3), and the cleaning brush (4) is kept in contact with the second filter screen (3);

the first driving mechanism (5) is arranged on the shell (1) and is used for driving the cleaning brush (4) to move back and forth along the length direction or the width direction of the second filter screen (3); and

and the second driving mechanism (6) is used for driving the cleaning brush (4) to rotate.

2. The range hood of claim 1, wherein: first actuating mechanism (5) are including rack (51), gear (52), transmission shaft (53), assembly part (54), rack (51) are close to second filter screen (3) and arrange along length or width direction of second filter screen (3), gear (52) are located rack (51) top and are engaged with the transmission with this rack (51), transmission shaft (53) can be located second filter screen (3) top and first end is connected with gear (52) with rotating, the second end of transmission shaft (53) can be located casing (1) along second filter screen (3) length or width direction round trip movement ground, assembly part (54) restraint is on transmission shaft (53) and is located second filter screen (3) top, cleaning brush (4) are located on assembly part (54).

3. The range hood of claim 2, wherein: a motor (56) is arranged in the shell (1), and an output shaft of the motor (56) is connected with a first end of the transmission shaft (53).

4. The range hood of claim 2, wherein: the assembly part (54) is provided with an inner cavity, the middle part of the transmission shaft (53) penetrates through the inner cavity to be arranged, a first bevel gear (61) which is coaxially connected with the transmission shaft (53) and rotates along with the transmission shaft (53) is arranged in the inner cavity, a second bevel gear (62) which is in meshing transmission with the first bevel gear (61) and is vertically arranged in the central axis is further arranged in the inner cavity, the cleaning brush (4) is connected with the lower end of the second bevel gear (62), and the transmission shaft (53), the assembly part (54), the first bevel gear (61) and the second bevel gear (62) jointly form the second driving mechanism (6).

5. The range hood of claim 4, wherein: the bottom of the second bevel gear (62) is provided with a connecting pole (621) extending downwards and arranged through the bottom of the assembly part (54), and the cleaning brush (4) is connected to the connecting pole (621).

6. The range hood of claim 2, wherein: and sliding rails (55) which are arranged in parallel with the racks (51) are respectively arranged on two sides of the second filter screen (3) in the shell (1), and two ends of the transmission shaft (53) are respectively connected onto the sliding rails (55) in a sliding manner through sliding blocks (531).

7. The range hood according to any one of claims 1 to 6, wherein: the cleaning mechanism (7) capable of spraying the cleaning solution onto the second filter screen (3) is further arranged on the shell (1), the cleaning mechanism (7) at least comprises a liquid spraying pipe (71) which is arranged close to the second filter screen (3), and the liquid spraying pipe (71) is connected with a cleaning source and is provided with a liquid outlet hole (711) on the side wall close to the second filter screen (3).

8. The range hood of claim 7, wherein: the cleaning mechanism (7) comprises a liquid guide pipe (72), a liquid storage tank (73) and a water pump, the liquid spraying pipe (71) is connected with the liquid storage tank (73) through the liquid guide pipe (72), the liquid storage tank (73) is used for storing cleaning liquid, and the water pump is arranged on the liquid guide pipe (72) and provides power for conveying the cleaning liquid.

9. The range hood of claim 7, wherein: the second filter screen (3) is formed with surrounding edge (31) by inside to outside downward sloping gradually near the edge, the border department of this surrounding edge (31) with the edge of first filter screen (2) links up mutually, all seted up into mouth of cigarette (30) on second filter screen (3) and surrounding edge (31), just mouth of cigarette (30) size of advancing on surrounding edge (31) is greater than mouth of cigarette (30) on second filter screen (3) main part.

10. The range hood of claim 9, wherein: the liquid spraying pipe (71) is annular and is arranged around the edge of the second filter screen (3), and the liquid outlet holes (711) are arranged on the upper surface of the second filter screen (3).