CN111288526B

CN111288526B - Fume exhaust fan

Info

Publication number: CN111288526B
Application number: CN202010243352.5A
Authority: CN
Inventors: 陈浩辉; 徐鑫; 申志贤
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2022-03-18
Anticipated expiration: 2040-03-31
Also published as: CN111288526A

Abstract

The invention relates to a range hood, which comprises a shell and a fan system arranged in the shell, wherein the lower part of the shell is provided with a vertically extending smoke inlet cavity, the front side wall of the lower part of the shell is provided with a smoke inlet communicated with the smoke inlet cavity, the upper part of the shell is provided with a smoke collection cavity communicated with the smoke inlet cavity, and the smoke collection cavity extends forwards to form an installation cavity for installing the fan system, and the range hood is characterized in that: the smoke inlet cavity is internally provided with a roller capable of pre-separating large particles in oil smoke, the roller can be rotatably arranged in the smoke inlet cavity, and the smoke inlet cavity further comprises a spraying component capable of spraying washing liquid onto the inner wall of the roller. Before the oil smoke enters the fan system, large particles in the oil smoke are pre-filtered and separated through the roller, so that the load of the fan system is reduced, and the oil smoke absorption effect is improved; and the spraying component which can spray the washing liquid on the inner wall of the roller is arranged, so that the roller can be kept clean, and the inner wall of the smoke inlet cavity can be washed, thereby keeping the flue clean.

Description

Fume exhaust fan

Technical Field

The invention relates to a range hood.

Background

Range hood is the electrical apparatus that is essential in the kitchen at present, and is comparatively common and use more extensively to arrange oily smoke purification system in last.

At present, the upward-exhaust oil fume purification system is mainly divided into two types: a top-suction range hood and a near-suction range hood. The top-suction type range hood is more attractive, but the smoke inlet is higher, and the smoke suction effect is limited; compared with a top-suction range hood, the near-suction range hood has a lower smoke inlet, but is influenced by the appearance structure and the internal air duct structure of the near-suction range hood, and the existing near-suction range hood cannot better approach oil smoke, so that the oil smoke suction effect is limited to a great extent.

In addition, the oil smoke directly enters the fan system, all the oil smoke is discharged into the public flue by the fan system, the load of the fan system is large, the oil smoke with large particles is easy to adhere to the fan system, the cleaning of the fan system is troublesome, and inconvenience is brought to consumers.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a range hood which can pre-filter oil smoke before the oil smoke enters a fan system so as to reduce the load of the fan system and keep a flue clean.

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 and locates the fan system in this casing, the casing lower part has the smoke inlet chamber of vertical extension, it has the mouth that advances that is linked together with this smoke inlet chamber to open on the preceding lateral wall of casing lower part, casing upper portion has the collection smoke chamber that is linked together with smoke inlet chamber, the forward extension of collection smoke chamber forms the installation cavity that is used for installing fan system, its characterized in that: the smoke inlet cavity is internally provided with a roller capable of pre-separating large particles in oil smoke, the roller can be rotatably arranged in the smoke inlet cavity, and the smoke inlet cavity further comprises a spraying component capable of spraying washing liquid onto the inner wall of the roller.

In the above scheme, the spray assembly comprises a water spraying cylinder and a water pump, the water spraying cylinder can be rotatably arranged in the roller and extends along the axial direction of the roller, water spraying holes are formed in the peripheral wall of the water spraying cylinder, and the water pump is arranged on the outer side of the roller and used for pumping high-pressure water into the inner cavity of the water spraying cylinder. The high-pressure water is sprayed to the inner wall of the roller to clean the oil stains attached to the inner wall of the roller and keep the roller clean, so that the roller keeps a good pre-filtering effect.

Preferably, the water spraying barrel comprises a hollow cylindrical body and a spraying arm arranged along the axial direction from the edge of the body, the spraying arm extends outwards from the edge of the body along the direction reversed by the water spraying barrel, the cross section width of the spraying arm is gradually reduced along the extending direction so as to form a tip at the tail end, the spraying holes are arranged at the tip end in a plurality and are spaced along the axial direction, and the body rotates under the reaction force of the spraying arm spraying water to the inner wall of the roller. By adopting the structure, the body is driven to rotate by the reaction force of the high-pressure water impacting the inner wall of the roller, an active driving mechanism is not required, the cost is saved and the structure is simplified on the basis of improving the cleaning effect.

As an improvement, a gear transmission assembly capable of driving the roller to rotate relative to the body is connected between the body and the roller, and the gear transmission assembly is arranged at the outer end of the roller. The central part of the first end wall of the roller is provided with a shaft sleeve which penetrates along the axial direction, the first end wall of the body is provided with a first connecting shaft which extends outwards and can penetrate through the shaft sleeve in a rotating mode, and the gear transmission assembly is connected between the shaft sleeve and the first connecting shaft. Adopt above-mentioned structure, realized the passive drive of cylinder, on the washing liquid blowout back in the cylinder got rid of the inner wall of advancing the cigarette chamber to clean advancing cigarette chamber inner wall, keep the flue clean.

Preferably, the gear transmission assembly comprises a first gear, a second gear, a third gear and a fourth gear, the first gear is sleeved on the first connecting shaft and rotates synchronously with the first connecting shaft, the second gear can be rotatably arranged on the shell and is in meshing transmission with the first gear, the third gear is in coaxial transmission with the second gear and is in meshing connection with the fourth gear, and the fourth gear is connected with the shaft sleeve. By adopting the structure, the linkage between the water spraying cylinder and the roller is convenient to realize, and the rotating speed of the roller relative to the water spraying cylinder can be controlled by setting the transmission ratio of the gear, so that the rotating speed of the roller is 3-5 times of that of the water spraying cylinder, thereby being beneficial to improving the self cleaning effect of the roller and the washing effect of the inner wall of the smoke inlet cavity.

Preferably, the central part of the second end wall of the roller is provided with an axial hole which penetrates along the axial direction, the second end wall of the body is provided with a second connecting shaft which extends outwards and can penetrate through the axial hole in a rotating manner, and the second connecting shaft penetrates through the axial direction to form a water guide channel which can be connected with an external water receiving pipe. The structure is convenient for realizing the connection of the water spraying cylinder, simplifies the structure and inputs high-pressure water into the water spraying cylinder.

In each scheme, two ends of the roller are rotatably connected to the shell through bearings, the axial direction of the roller transversely extends along the smoke inlet cavity, and the roller is provided with a plurality of through holes for oil smoke to pass through. By adopting the structure, the oil smoke circulation cross section in the smoke inlet cavity can be fully covered, and the pre-filtering effect is improved.

Preferably, the spraying arms are at least three and are arranged at intervals on the periphery of the body so as to increase the rotating speed of the water spraying barrel.

Compared with the prior art, the invention has the advantages that: before the oil smoke enters the fan system, large particles in the oil smoke are pre-filtered and separated through the roller, so that the load of the fan system is reduced, and the oil smoke absorption effect is improved; and the spraying component which can spray the washing liquid on the inner wall of the roller is arranged, so that the roller can be kept clean, and the inner wall of the smoke inlet cavity can be washed, thereby keeping the flue clean.

Drawings

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

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is another cross-sectional view of FIG. 1;

FIG. 4 is a schematic view of an assembly structure of a drum and a water spraying cylinder according to an embodiment of the present invention;

fig. 5 is a partial cross-sectional view of fig. 4.

Detailed Description

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

As shown in fig. 1 to 5, the range hood of the embodiment includes a housing 1 and a fan system 2 disposed in the housing 1, a smoke inlet 11 extending vertically is formed in a lower portion of the housing 1, a smoke inlet 111 communicating with the smoke inlet 11 is formed in a front side wall of the lower portion of the housing 1, a smoke collection chamber 12 communicating with the smoke inlet 11 is formed in an upper portion of the housing 1, and the smoke collection chamber 12 extends forward to form an installation chamber 13 for installing the fan system 2. It should be noted that, the installation cavity 13 is used for installing the fan system 2, but the installation position of the fan system 2 should not be completely limited in the installation cavity 13, and since the smoke collection cavity 12 is integral with the installation cavity 13, when the fan system 2 is installed, a part of the fan system 2 can be located in the smoke collection cavity 12 according to the requirement. An oil collecting cup 6 with an upward opening is arranged at the lower edge of the shell 1, and the bottom of the smoke inlet cavity 11 is connected with the oil collecting cup 6. Because the smoke inlet cavity 11 at the lower part of the shell 1 vertically extends, the smoke inlet cavity 11 can be made thinner along the width in the front-back direction and can extend downwards to be sufficiently close to the cooker and a smoke generating source, so that the smoke can be quickly sucked into the smoke inlet cavity to be discharged upwards once being generated, and the smoke suction effect is improved.

In the present embodiment, a roller 3 capable of pre-separating large particles in the soot is disposed in the soot inlet 11, and the roller 3 is rotatably disposed in the soot inlet 11. The both ends of cylinder 3 pass through bearing 10 and can connect on casing 1 rotatoryly, and the axial of cylinder 3 is opened on the cylinder 3 has the through-hole 31 that a plurality of confession oil smoke passed along the horizontal extension of advancing cigarette chamber 11, and this structure is favorable to fully covering the oil smoke circulation cross-section in advancing cigarette chamber 11, improves the prefiltration effect.

As shown in fig. 3 to 5, a spraying component 4 capable of spraying a cleaning solution onto the inner wall of the drum 3 is further provided in the present embodiment. The spraying assembly 4 includes a water spraying cylinder 41 and a water pump (not shown), the water spraying cylinder 41 is rotatably disposed in the drum 3 and extends along the axial direction of the drum 3, the outer circumferential wall of the water spraying cylinder 41 is provided with water spraying holes 411, and the water pump is disposed outside the drum 3 and pumps high-pressure water into the inner cavity 410 of the water spraying cylinder 41. The oil stain adhered to the inner wall of the roller 3 is cleaned by spraying high-pressure water to the inner wall of the roller 3, so that the roller 3 is kept clean, and the roller 3 keeps a good pre-filtering effect.

The water spray cylinder 41 includes a hollow cylindrical body 412 and a spray arm 413 arranged axially from the edge of the body 412, the spray arm 413 extends from the edge of the body 412 outwards along the direction of reversal of the water spray cylinder 41, the cross-sectional width of the spray arm 413 is gradually reduced along the extending direction so as to form a tip 414 at the end, a plurality of water spray holes 411 are formed at the tip 414 at intervals in the axial direction, and the body 412 rotates under the reaction force of the spray arm 413 spraying water to the inner wall of the drum 3. The spray arms 413 are four in number and are spaced around the periphery of the body 412. The body 412 is driven to rotate by the reaction force of the high-pressure water impacting the inner wall of the roller 3, an active driving mechanism is not required, the cost is saved on the basis of improving the cleaning effect, and the structure is simplified.

In this embodiment, a gear assembly 5 is connected between the main body 412 and the roller 3, and the gear assembly 5 is disposed at an outer end of the roller 3 and can drive the roller 3 to rotate relative to the main body 412. The central portion of the first end wall of the roller 3 is provided with a shaft sleeve 32 which penetrates along the axial direction, the first end wall of the body 412 is provided with a first connecting shaft 42 which extends outwards and can penetrate through the shaft sleeve 32 in a rotating way, and the gear transmission assembly 5 is connected between the shaft sleeve 32 and the first connecting shaft 42. This structure has realized the passive drive of cylinder 3, and on the washing liquid blowout back in the cylinder 3 was got rid of into the inner wall of cigarette chamber 11 to clean into 11 inner walls of cigarette chamber, keep the flue clean.

Specifically, the gear transmission assembly 5 includes a first gear 51, a second gear 52, a third gear 53 and a fourth gear 54, the first gear 51 is sleeved on the first connecting shaft 42 and rotates synchronously with the first connecting shaft 42, the second gear 52 is rotatably disposed on the housing 1 and is in meshing transmission with the first gear 51, the third gear 53 is in coaxial transmission with the second gear 52 and is in meshing connection with the fourth gear 54, and the fourth gear 54 is connected with the shaft sleeve 32. The structure is convenient for realizing the linkage between the water spraying cylinder 41 and the roller 3, and the rotating speed of the roller 3 relative to the water spraying cylinder 41 can be controlled by setting the transmission ratio of the gear, so that the rotating speed of the roller 3 is 3-5 times of the rotating speed of the water spraying cylinder 41, which is not only beneficial to improving the self cleaning effect of the roller 3, but also beneficial to improving the washing effect of the inner wall of the smoke inlet cavity 11.

The second end wall of the roller 3 of this embodiment has an axial hole 33 formed at the center thereof, and the second end wall of the body 412 is provided with a second connecting shaft 43 extending outward and rotatably passing through the axial hole 33, and the second connecting shaft 43 axially passes through to form a water guide channel 431 connectable to an external water receiving pipe, which facilitates the connection of the water spray cylinder 41, simplifies the structure, and allows high pressure water to be supplied to the water spray cylinder 41.

In the range hood of the embodiment, when the range hood is in the oil smoke absorption state, the spray assembly 4 does not operate, and large particles in the oil smoke passing through the smoke inlet cavity 11 are pre-filtered and separated only by the roller 3, so that the load of a fan system is reduced, and the oil smoke absorption effect is improved; after the device is used for a period of time, the spraying component 4 is started, cleaning liquid is sprayed on the inner wall of the roller 3 through the spraying cylinder 41, the spraying cylinder 41 rotates under the reaction force of water impacting the inner wall of the roller 3, the spraying cylinder 41 rotates and drives the roller 3 to rotate through the gear transmission component 5, so that the cleaning liquid is thrown onto the inner wall of the smoke inlet cavity 11 after the washing cylinder 3 is flushed, the inner wall of the smoke inlet cavity 11 is cleaned, and the washing waste liquid is discharged through the oil collecting cup 6.

Claims

1. The utility model provides a range hood, includes casing (1) and locates fan system (2) in this casing (1), casing (1) lower part has vertical extension's advance smoke chamber (11), it has the smoke inlet (111) that are linked together with this advance smoke chamber (11) to open on the preceding lateral wall of casing (1) lower part, casing (1) upper portion has collection smoke chamber (12) that are linked together with advance smoke chamber (11), collection smoke chamber (12) extend forward and form installation cavity (13) that are used for installing fan system (2), its characterized in that: the smoke inlet cavity (11) is internally provided with a roller (3) capable of pre-separating large particles in the oil smoke, the roller (3) can be rotatably arranged in the smoke inlet cavity (11), and the smoke inlet cavity also comprises a spraying component (4) capable of spraying washing liquid on the inner wall of the roller (3);

the spraying assembly (4) comprises a water spraying cylinder (41) and a water pump, the water spraying cylinder (41) can be rotatably arranged in the roller (3) and extends along the axial direction of the roller (3), a water spraying hole (411) is formed in the peripheral wall of the water spraying cylinder (41), and the water pump is arranged on the outer side of the roller (3) and is used for pumping high-pressure water into an inner cavity (410) of the water spraying cylinder (41);

the water spraying barrel (41) comprises a hollow cylindrical body (412) and a spraying arm (413) arranged along the axial direction from the edge of the body (412), the spraying arm (413) extends outwards from the edge of the body (412) along the direction reversed by the water spraying barrel (41), the cross section width of the spraying arm (413) is gradually reduced along the extending direction so as to form a tip (414) at the tail end, the plurality of water spraying holes (411) are arranged at the tip (414) at intervals along the axial direction, and the body (412) rotates under the reaction force of the spraying arm (413) spraying water to the inner wall of the roller (3);

a gear transmission assembly (5) capable of driving the roller (3) to rotate relative to the body (412) is connected between the body (412) and the roller (3), and the gear transmission assembly (5) is arranged at the outer end of the roller (3);

in the state of absorbing the oil smoke, the spraying component (4) does not operate, and large particles in the oil smoke passing through the smoke inlet cavity (11) are pre-filtered and separated only through the roller (3); after the washing machine is used for a period of time, the spraying assembly (4) is started, the washing liquid is sprayed onto the inner wall of the roller (3) through the spraying cylinder (41), the spraying cylinder (41) is rotated by the reaction force of water impacting the inner wall of the roller (3), the spraying cylinder (41) is rotated to drive the roller (3) to rotate through the gear transmission assembly (5), the washing liquid is thrown onto the inner wall of the smoke inlet cavity (11) after the washing cylinder (3) is flushed, and the inner wall of the smoke inlet cavity (11) is washed.

2. The range hood of claim 1, wherein: the central part of the first end wall of the roller (3) is provided with a shaft sleeve (32) which penetrates through the roller in the axial direction, the first end wall of the body (412) is provided with a first connecting shaft (42) which extends outwards and can penetrate through the shaft sleeve (32) in a rotating mode, and the gear transmission assembly (5) is connected between the shaft sleeve (32) and the first connecting shaft (42).

3. The range hood of claim 2, wherein: the gear transmission assembly (5) comprises a first gear (51), a second gear (52), a third gear (53) and a fourth gear (54), the first gear (51) is sleeved on the first connecting shaft (42) and synchronously rotates along with the first connecting shaft (42), the second gear (52) can be rotatably arranged on the shell (1) and is in meshed transmission with the first gear (51), the third gear (53) and the second gear (52) are in coaxial transmission and are in meshed connection with the fourth gear (54), and the fourth gear (54) is connected with the shaft sleeve (32).

4. The range hood of claim 3, wherein: the central part of the second end wall of the roller (3) is provided with an axial hole (33) which penetrates along the axial direction, the second end wall of the body (412) is provided with a second connecting shaft (43) which extends outwards and can penetrate through the axial hole (33) in a rotating way, and the second connecting shaft (43) penetrates through the axial direction to form a water guide channel (431) which can be connected with an external water receiving pipe.

5. The range hood according to any one of claims 1 to 4, wherein: the both ends of cylinder (3) can connect on casing (1) through bearing (10) with rotating, the axial of cylinder (3) is along advancing the horizontal extension of cigarette chamber (11), it has through-hole (31) that a plurality of confession oil smoke passed to open on cylinder (3).

6. The range hood according to any one of claims 1 to 4, wherein: the spray arms (413) are at least three and are arranged at intervals on the periphery of the body (412).