CN217441721U

CN217441721U - Fume exhaust fan

Info

Publication number: CN217441721U
Application number: CN202121167276.0U
Authority: CN
Inventors: 刘杰; 陈浩辉; 刘剑涛
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2022-09-16
Anticipated expiration: 2031-05-27

Abstract

The utility model provides a range hood, including the box subassembly with install the fan frame at box subassembly top, fan frame internally mounted has the fan, the bottom of box subassembly has into the mouth, the fan lower part stretches into inside the box subassembly, the fan is the centrifugal fan who has front side air intake and rear side air intake, correspondingly, box subassembly inside is formed with air inlet channel and back air inlet channel, air inlet is through air inlet channel and front side air intake fluid intercommunication before passing, air inlet is through air inlet channel and rear side air intake fluid intercommunication after passing. The lower portion of the fan of the range hood extends into the box body assembly, the fan is of a front air inlet structure and a rear air inlet structure, the air inlet is closer to the smoke inlet after the fan air inlet is arranged, the range hood effect is improved, therefore, the range hood effect can be guaranteed by adopting a thin fan system, the thickness of the whole box body can be reduced, the product is made to be a thin range hood in appearance, the risk of collision of a user can be reduced, and the invasion sense in the using process can be reduced.

Description

Cooking fume exhauster

Technical Field

The utility model relates to a range hood.

Background

The range hood has many types, and can be divided into a fan upper-type and a fan lower-type according to the difference of the positions of the installed fans in the shell, namely, for an operation panel of the range hood, the fan is completely positioned above the operation panel and called as the fan upper-type, the fan is completely positioned below the operation panel and called as the fan lower-type, and the height design of the operation panel needs to be based on the height suitable for a user and convenient operation. For example, "secondary extractor hood" disclosed in chinese utility model patent No. ZL95202124.2 (publication No. CN2229615Y), and "extractor hood with kitchen air purifying function" disclosed in chinese utility model patent No. ZL201120225844.8 (publication No. CN202133011U) all disclose an extractor hood with a fan disposed on top. The range hood has the advantage of large operation space for users, and accords with the international safety standard, and has the defect of poor range hood effect due to the fact that the distance between the fan system and the table surface of the stove is too far. For example, chinese patent application No. zl93100778.x (publication No. CN1084263A) discloses an exhaust hood with a bottom-mounted fan, which has a bottom-mounted fan, and the height of an operating panel is fixed, so that the whole casing extends downward along the operating panel, and the lower part of the casing is close to the top of a kitchen range, although the effect of sucking oil smoke is not good, the noise is relatively large, and the operating space of a user is greatly reduced. In summary, the structure of the existing range hood needs to be further improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to above-mentioned prior art current situation, provide one kind and can design into the range hood of slim structure with the box when guaranteeing the oil absorption cigarette effect.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this range hood, including the box subassembly with install the fan frame at box subassembly top, fan frame internally mounted has fan, its characterized in that: the bottom of the box body assembly is provided with a smoke inlet, the lower part of the fan extends into the box body assembly, the fan is a centrifugal fan with a front side air inlet and a rear side air inlet, correspondingly, a front air inlet channel and a rear air inlet channel are formed in the box body assembly, the smoke inlet is in fluid communication with the front side air inlet through the front air inlet channel, and the smoke inlet is in fluid communication with the rear side air inlet through the rear air inlet channel.

In order to overcome the defect of noise increase caused by the fact that the fan is arranged below, the distance between the air inlet on the front side of the fan and the front side plate of the box body assembly is smaller than the distance between the air inlet on the rear side of the fan and the rear side plate of the box body assembly, correspondingly, the rear air inlet channel forms a main air inlet channel, and the front air inlet channel forms an auxiliary air inlet channel. Therefore, the rear air inlet channel is used as the main air inlet channel, and the user stands at the front side of the range hood, so that the noise of the range hood is reduced for the user.

The box subassembly can have multiple structure, the box subassembly includes preceding lateral part and posterolateral part, the gross thickness of the fore-and-aft direction of preceding lateral part and posterolateral part is unanimous with the front and back thickness of fan frame, the posterolateral part has the cigarette portion of advancing that stretches out in preceding lateral part downwards, advance the front side of cigarette portion to be located to the mouth, advance the mouth and be strip and control transverse arrangement.

Further preferably, the box assembly may be of unitary integral construction, or alternatively, the front and right sides of the box assembly may be releasably connected together.

In order to improve the oil smoke absorption effect, the bottom of the front side part of the box body assembly is provided with a smoke baffle plate, the smoke baffle plate horizontally extends forwards out of the box body assembly, and the left width and the right width of the smoke baffle plate are consistent with those of the smoke inlet.

In order to guide the oil smoke into the rear air inlet channel as much as possible, a lower guide plate which can guide the oil smoke into the rear air inlet channel from the oil smoke inlet is arranged in the oil smoke inlet.

The lower guide plate can have various structures, and preferably, the lower guide plate is a flat plate inclined from bottom to top, and the shape of the lower guide plate is matched with that of the smoke inlet.

In order to guide part of oil smoke to the front air inlet channel, an upper guide plate is arranged inside the front side part of the box body assembly and is positioned below the fan, and the upper guide plate is used for guiding the oil smoke to the front air inlet channel from the smoke inlet.

The upper guide plate and the lower guide plate can be in different position relations, preferably, the upper guide plate is a flat plate which is inclined upwards from back to front, the upper guide plate is positioned in the front upper part of the lower guide plate, and the lower guide plate and the upper guide plate are staggered in the vertical direction and the front and back direction.

In order to smoothly guide oil into the oil cup, oil leakage ports are formed in the left side and the right side of the rear side edge of the upper guide plate, oil guide pieces are connected between the oil leakage ports and the inner side wall of the smoke inlet portion, strip-shaped oil cups transversely arranged in the left-right direction are arranged below the lower guide plate, and the left end and the right end of each strip-shaped oil cup are arranged at the bottom of the smoke inlet portion.

Preferably, a smoke baffle support for supporting the smoke baffle is mounted on the upper surface of the smoke baffle, the oil guide pieces are arranged on the left side and the right side of the rear side edge of the smoke baffle support, and the oil guide pieces are inclined downwards from front to back.

The left side and the right side of the rear side edge of the upper guide plate are provided with oil leaking ports, the oil leaking ports extend downwards to form oil guiding sheets, the oil guiding sheets are respectively contacted with the left inner side wall and the right inner side wall of the smoke inlet part, strip-shaped oil cups which are transversely arranged from left to right are arranged below the lower guide plate, and the left end and the right end of each strip-shaped oil cup are arranged at the bottom of the smoke inlet part.

In order to enable oil smoke to be captured by a fan system quickly, a left air guide plate and a right air guide plate are arranged on the left side and the right side inside the box body assembly respectively and are located on the left side and the right side of the lower portion of the fan respectively, the left air guide plate and the right air guide plate are arranged in a mode of inclining inwards from bottom to top, and a smoke collection channel with the width at the bottom and the width at the top is formed between the left air guide plate and the right air guide plate.

Preferably, sound absorbing cotton is arranged in an area enclosed by the upper part of the left air deflector and the volute annular wall of the fan and an area enclosed by the upper part of the right air deflector and the volute annular wall of the fan. Like this, inhale the sound cotton on the one hand and can inhale the sound and fall and make an uproar, on the other hand can cushion this regional air current, makes the oil smoke get into fan system through the direction

Preferably, the front side air inlet and the rear side air inlet of the fan are respectively provided with a front side air inlet ring and a rear side air inlet ring, the front side air inlet ring is provided with a motor support, and the motor of the fan is arranged on the motor support.

Compared with the prior art, the utility model has the advantages of: the lower part of a fan of the range hood extends into the box assembly, the fan is a centrifugal fan with a front side air inlet and a rear side air inlet, a smoke inlet is in fluid communication with the front side air inlet through a front air inlet channel inside the box, the smoke inlet is in fluid communication with the rear side air inlet through a rear air inlet channel inside the box, an air suction port of the fan can be arranged below, the air suction port is closer to the smoke inlet, oil smoke is captured before the oil smoke rises, the oil smoke absorption effect is improved, in addition, the fan adopts a double air inlet channel, particularly, the rear air inlet channel is used as a main air inlet channel, and the fan noise is reduced. In addition, after the fan is arranged, the oil smoke suction effect is guaranteed, so that a thin fan system can be adopted, namely the front and rear sizes of the fan are small, the thickness of the whole box body can be reduced, the product is a thin range hood in appearance, the risk of head collision of a user can be reduced, and the invasion sense in the use process can be reduced.

Drawings

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

fig. 2 is a schematic diagram of the internal structure of the embodiment of the present invention;

fig. 3 is a schematic view of the internal structure of another angle according to the embodiment of the present invention;

fig. 4 is a structural sectional view of an embodiment of the present invention;

fig. 5 is a schematic view of an oil guiding structure according to an embodiment of the present invention;

fig. 6 is an enlarged schematic view of a portion a of fig. 5.

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 the present embodiment includes a box assembly and a fan frame 2 installed on the top of the box assembly, wherein a fan 3 is installed inside the fan frame 2. The direction indicated by arrow B in fig. 4 is taken as a forward direction, the lower part of the fan 3 extends into the box assembly 1, the fan 3 is a centrifugal fan with a front side air inlet and a rear side air inlet, and correspondingly, a front air inlet channel 5 and a rear air inlet channel 6 are formed in the box assembly 1. And the distance between the front air inlet of the fan and the front side plate of the box body assembly is smaller than the distance between the rear air inlet of the fan and the rear side plate of the box body assembly, correspondingly, the rear air inlet channel 6 forms a main air inlet channel, and the front air inlet channel 5 forms an auxiliary air inlet channel.

The case assembly 1 of the present embodiment includes a front side portion 100 and a rear side portion 101, and the case assembly 1 may be a unitary and integrally formed structure, or the front side portion 100 and the right side portion 101 may be detachably connected together. The total thickness of the front side portion 100 and the rear side portion 101 in the front-rear direction coincides with the front-rear thickness of the fan frame 2. The rear side part 101 is provided with a smoke inlet part 102 which extends downwards from the front side part 100, the front side of the smoke inlet part 102 is opened to form a smoke inlet, and the smoke inlet 4 is in a strip shape and is transversely arranged at the left and the right. The smoke inlet 4 is in fluid communication with a front side air inlet of the fan 3 through a front air inlet channel 5, and the smoke inlet 4 is in fluid communication with a rear side air inlet of the fan 3 through a rear air inlet channel 6.

A smoke baffle 7 is arranged at the bottom of the front side part 100 of the box body component 1, the smoke baffle 7 horizontally extends forwards out of the box body component 1, and the left and right width of the smoke baffle 7 is consistent with the left and right width of the smoke inlet 4. Moreover, the periphery of the smoke baffle plate is provided with the flanges extending upwards, and after the flanges are arranged, the smoke baffle plate plays a role in attractive appearance, and can prevent objects placed on the smoke baffle plate 7 from sliding off, for example, a seasoning bottle can be placed on the smoke baffle plate 7, so that when the range hood is opened, the seasoning bottle can be prevented from falling off due to vibration, for example, electronic products such as a mobile phone and a tablet personal computer can be obliquely placed on the smoke baffle plate 7 during cooking, and the range hood can be used for entertainment during cooking. In addition, the smoke baffle 7 can also enlarge a smoke collecting area, and ensure that part of oil smoke which is not captured in time is in the smoke baffle area.

In this embodiment, a lower deflector 8 is installed in the smoke inlet 102, the lower deflector 8 is a flat plate inclined from bottom to top and inclined backwards, and the shape of the lower deflector 8 is adapted to the shape of the smoke inlet 4, that is, the lower deflector is rectangular, and the lower deflector 8 is used for guiding the oil smoke from the smoke inlet 4 to the rear air inlet channel 6. An upper guide plate 9 is arranged in the front side part 100 of the box body component 1, the upper guide plate 9 is positioned below the fan 3, the upper guide plate 9 is a flat plate which is inclined upwards from back to front, and the upper guide plate 9 is used for guiding the oil smoke to the front air inlet channel 5 from the smoke inlet 4. The upper guide plate 9 is positioned at the front upper part of the lower guide plate 8, and the inclination angle of the upper guide plate 9 relative to the horizontal plane is smaller than that of the lower guide plate 8 relative to the horizontal plane. And the lower guide plate 8 and the upper guide plate 9 are staggered with each other in the vertical direction and the front-back direction.

As shown in fig. 5 and fig. 6, the oil guiding structure of the range hood of the present embodiment is as follows: it has oil leak 91 to go up the left and right sides of guide plate 9 rear side edge and open, there is a cigarette board support 71 that is used for supporting cigarette board 7 at the last surface mounting who keeps off cigarette board 7, the left and right sides that keeps off cigarette board support 71 rear side edge is equipped with oil guide sheet 72, oil guide sheet 72 inclines down from the slant forward backward, oil guide sheet 72 links up between oil leak 91 and the inside wall of advancing cigarette portion 102, transverse arrangement's strip oil cup 11 about the below of guide plate 8 is equipped with down, the bottom at advancing cigarette portion 102 is installed at both ends about strip oil cup 11. When the range hood works, separated oil in the fan 3 drops on the upper guide plate 9, the oil can flow to the oil leakage openings 91 on the two sides of the rear part along the upper guide plate 9, and then flows into the strip-shaped oil cup 11 along the inner wall of the smoke inlet part 102 through the oil guide sheets 72 on the two sides.

The left side and the right side in the box body component 1 are respectively provided with a left air deflector 12 and a right air deflector 13, the left air deflector 12 and the right air deflector 13 are respectively positioned at the left side and the right side of the lower part of the fan 3, and the left air deflector 12 and the right air deflector 13 are obliquely and inwardly arranged from bottom to top, so that a smoke collection channel with wide bottom and narrow top is formed between the left air deflector 12 and the right air deflector 13, and the oil smoke can pass through the smoke collection channel at an accelerated speed when passing through the smoke collection channel, so that the oil smoke can enter the fan system at an accelerated speed and is discharged outwards. A grid net 18 is arranged in the smoke collecting channel, and the grid net 18 can not only prevent foreign matters from being sucked, but also filter the oil smoke. In addition, sound absorption cotton 14 is installed in the area enclosed by the upper part of the left air deflector 12 and the volute annular wall of the fan 3 and the area enclosed by the upper part of the right air deflector 13 and the volute annular wall of the fan 3. After sound cotton 14 is inhaled in the setting, can inhale the sound on the one hand and fall and make an uproar, on the other hand can cushion this regional air current, makes the oil smoke get into fan system through the direction.

In addition, a front side air inlet ring 15 and a rear side air inlet ring 16 are respectively installed on a front side air inlet and a rear side air inlet of the fan, a motor support 17 is installed on the front side air inlet ring 15, and components such as a motor impeller of the fan 3 and the like are detachably installed on the motor support 17. In the assembly and disassembly, the impeller and the volute can be cleaned only by disassembling the front panel of the box body assembly 1 without disassembling the whole machine, so that the maintenance and the assembly are convenient.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion or/and be transported to the second portion, and may be directly communicated between the first portion and the second portion, or indirectly communicated between the first portion and the second portion via at least one third member, which may be a fluid passage such as a pipe, a channel, a duct, a flow guide, a hole, a groove, or a housing allowing the fluid to flow therethrough, or a combination thereof.

Claims

1. The utility model provides a range hood, includes box subassembly (1) and installs fan frame (2) at box subassembly top, fan frame (2) internally mounted has fan (3), its characterized in that: the bottom of the box body assembly (1) is provided with a smoke inlet (4), the lower portion of the fan (3) extends into the box body assembly (1), the fan (3) is a centrifugal fan with a front side air inlet and a rear side air inlet, correspondingly, a front air inlet channel (5) and a rear air inlet channel (6) are formed in the box body assembly (1), the smoke inlet (4) is in fluid communication with the front side air inlet through the front air inlet channel (5), and the smoke inlet (4) is in fluid communication with the rear side air inlet through the rear air inlet channel (6).

2. The range hood of claim 1, wherein: the distance between the air inlet at the front side of the fan and the front side plate of the box body assembly is smaller than the distance between the air inlet at the rear side of the fan and the rear side plate of the box body assembly, correspondingly, the rear air inlet channel (6) forms a main air inlet channel, and the front air inlet channel (5) forms an auxiliary air inlet channel.

3. The range hood of claim 1, wherein: the box body assembly (1) comprises a front side part (100) and a rear side part (101), the total thickness of the front and rear directions of the front side part (100) and the rear side part (101) is consistent with the front and rear thickness of the fan frame (2), the rear side part (101) is provided with a smoke inlet part (102) extending downwards from the front side part, the smoke inlet (4) is arranged at the front side of the smoke inlet part (102), and the smoke inlet (4) is in a strip shape and is transversely arranged left and right.

4. The range hood of claim 3, wherein: the bottom of the front side part (100) of the box body component (1) is provided with a smoke baffle plate (7), the smoke baffle plate (7) horizontally extends out of the box body component (1), and the left width and the right width of the smoke baffle plate (7) are consistent with the left width and the right width of the smoke inlet (4).

5. The range hood of claim 4, wherein: a lower guide plate (8) which can guide the oil smoke from the smoke inlet (4) to the rear air inlet channel (6) is arranged in the smoke inlet part (102).

6. The range hood of claim 5, wherein: the lower guide plate (8) is a flat plate inclining from bottom to top and inclining backwards, and the shape of the lower guide plate (8) is matched with that of the smoke inlet (4).

7. The range hood of claim 5, wherein: an upper guide plate (9) is arranged inside the front side part (100) of the box body assembly (1), the upper guide plate (9) is located below the fan (3), and the upper guide plate (9) is used for guiding oil smoke to the front air inlet channel (5) from the smoke inlet (4).

8. The range hood of claim 7, wherein: go up guide plate (9) for from the back forward slant inclined up's flat board, go up guide plate (9) and be located the preceding top of guide plate (8) down to, lower guide plate (8) and last guide plate (9) all stagger each other on vertical direction and fore-and-aft direction.

9. The range hood of claim 7, wherein: go up guide plate (9) rear side edge's the left and right sides and open and to have oil leak mouth (91), it leads oil sheet (72) to link up between oil leak mouth (91) and the inside wall of advancing cigarette portion (102) the below of lower guide plate (8) is equipped with about horizontal arrangement's strip oil cup (11), both ends are installed about strip oil cup (11) advance the bottom of cigarette portion (102).

10. The range hood of claim 9, wherein: the upper surface of the smoke baffle (7) is provided with a smoke baffle bracket (71) for supporting the smoke baffle (7), the left side and the right side of the rear side edge of the smoke baffle bracket (71) are provided with the oil guide sheets (72), and the oil guide sheets (72) are obliquely inclined downwards from front to back.

11. The range hood of claim 1, wherein: the left side and the right side of the interior of the box body component (1) are respectively provided with a left air guide plate (12) and a right air guide plate (13), the left air guide plate (12) and the right air guide plate (13) are respectively positioned on the left side and the right side of the lower portion of the fan (3), in addition, the left air guide plate (12) and the right air guide plate (13) are obliquely and inwardly arranged from bottom to top, and a smoke collection channel with a wide lower part and a narrow upper part is formed between the left air guide plate (12) and the right air guide plate (13).

12. The range hood of claim 11, wherein: and sound absorption cotton (14) is arranged in an area enclosed by the upper part of the left air deflector (12) and the volute annular wall of the fan (3) and an area enclosed by the upper part of the right air deflector (13) and the volute annular wall of the fan (3).