CN217004585U

CN217004585U - Noise reduction structure of range hood

Info

Publication number: CN217004585U
Application number: CN202220023536.5U
Authority: CN
Inventors: 付云开; 江名松; 李昂; 余丙松; 傅海峰; 郭俊杰; 崔腾飞; 曹亚裙; 梁兵兵; 张迪
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-07-19
Anticipated expiration: 2032-01-04

Abstract

The utility model provides a structure of making an uproar falls of range hood, including cavity and the last cavity of installation cavity top down, it has the air outlet to open at cavity top down, go up the cavity including the air inlet apron, air inlet apron bottom forms the air intake that is linked together with the air outlet, the cavity top is formed with the connecting portion that are connected with the air inlet apron down, the inboard of connecting portion is located to the air inlet apron, connecting portion include left side connecting portion and right side connecting portion, be formed with opening air inlet clearance down between the left and right sides of air inlet apron and the connecting portion that correspond the side, perhaps install on the air inlet apron and keep out the wind the piece, it is used for blockking that the air current that the air outlet blew out flows into in the air inlet clearance to keep out the wind the piece. The utility model has the advantages that: the air inlet cover plate of the upper cavity of the noise reduction structure of the range hood is arranged on the inner side of the lower cavity connecting part, and the wind shielding part can prevent airflow blown out from the air outlet from flowing into an air inlet gap between the air inlet cover plate and the lower cavity connecting part, so that airflow loss can be reduced, and noise is reduced.

Description

Noise reduction structure of range hood

Technical Field

The utility model relates to a range hood, in particular to a noise reduction structure of a range hood.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The existing range hood generally comprises an upper cavity and a lower cavity, wherein the upper cavity is provided with a range hood fan, an air inlet cavity is formed in the lower cavity, the top of the lower cavity is provided with an air outlet, the bottom of the upper cavity is provided with an air inlet, and during installation, the upper cavity is installed at the top of the lower cavity, so that the air outlet of the lower cavity is in butt joint with the air inlet of the upper cavity. When the oil smoke suction fan works, under the action of the oil smoke suction fan, oil smoke flows are sucked into the air inlet cavity and then are discharged into the smoke pipe through the smoke outlet of the upper cavity. Generally, because last cavity and cavity about with assemble together, the air current can flow to the erection joint department through the gap between last cavity and the cavity down to cause the air loss, produce the noise, and then influence user experience. At present, people generally come the noise reduction through the cotton mode of installation amortization, but the amortization is cotton not only with higher costs, pastes the cotton artifical manual installation that needs of amortization moreover, extravagant human cost. In summary, the noise reduction structure of the existing range hood needs to be further improved.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a noise reduction structure of a range hood, which can effectively reduce air flow loss and noise, aiming at the current situation of the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: this structure of making an uproar falls of range hood, including cavity and the last cavity of installation at cavity top down, it has the air outlet to open at cavity top down, go up the cavity including the air inlet apron, the air inlet apron bottom forms the air intake that is linked together with the air outlet, the cavity top be formed with down with the connecting portion that the air inlet apron is connected, its characterized in that: the inboard of connecting portion is located to the air inlet apron, connecting portion include left side connecting portion and right side connecting portion, be formed with opening air inlet clearance down between the left and right sides of air inlet apron and the connecting portion that correspond the side perhaps install the piece of keeping out the wind on the air inlet apron or on connecting portion, the piece of keeping out the wind is used for blockking that the air current that the air outlet blew out flows in the air inlet clearance.

Preferably, the lower connecting piece is installed in the outside of left side connecting portion and right side connecting portion, install the connecting piece on the left side lateral wall of air inlet apron and the right side lateral wall, go up the connecting piece and can dismantle the connection with lower connecting piece.

The upper connecting piece and the lower connecting piece can have various connecting structures, preferably, the lower connecting piece is provided with a hook hole, the upper connecting piece is provided with a hook, and the hook is abutted against the upper edge of the hook hole so that the lower connecting piece is hung on the upper connecting piece.

Further preferably, an outer mounting hole is formed in the lower connecting piece and located below the hook hole, an inner mounting hole is formed in a connecting portion of the lower cavity on the side corresponding to the lower cavity, the bolt penetrates through the inner mounting hole and the outer mounting hole to fix the lower connecting piece to the connecting portion of the lower cavity, an inner concave portion used for avoiding the bolt is formed in the left side wall and the right side wall of the air inlet cover plate, and an air inlet gap is formed between the inner concave portion and the connecting portion on the corresponding side.

In order to avoid the air current to flow into the air inlet clearance, the piece that keeps out the wind is installed the inboard of left side connecting portion and right side connecting portion, the upper portion of the piece that keeps out the wind has the kink of inside side bending, the kink covers the air inlet clearance, the vertical projection of interior concave part falls into on the kink.

For further noise reduction, the lower part inside wall epirelief of the piece that keeps out the wind is equipped with the water conservancy diversion muscle, the water conservancy diversion muscle is arranged from top to bottom, and the water conservancy diversion muscle is along preceding rear direction interval distribution.

Further preferably, a lower portion of the wind shielding member is attached to inner walls of the left and right connecting portions. In this way, the flow loss is advantageously reduced.

Further preferably, the lower portion of the wind shielding member has a vertical portion and an inclined portion extending obliquely outward from the lower edge of the vertical portion, the lower portion of the air guide rib is provided on the inclined portion, and the upper portion of the air guide rib is provided on the vertical portion. After the diversion ribs adopt the structure, the diversion ribs not only can be more favorable for airflow diversion, but also are favorable for noise reduction.

The piece of keeping out the wind can have multiple structures, preferably, the piece of keeping out the wind is the U type, and the left and right sides wall that keeps out the wind the piece is installed respectively on left side connecting portion and right side connecting portion, and the rear side wall that keeps out the wind the piece is installed under on the cavity back shroud.

Preferably, in any one of the above embodiments, a smoke exhaust fan is installed in the upper chamber.

Compared with the prior art, the utility model has the advantages that: the air inlet cover plate of the upper cavity of the noise reduction structure of the range hood is arranged on the inner side of the lower cavity connecting part, and the wind shielding part can prevent airflow blown out from the air outlet from flowing into an air inlet gap between the air inlet cover plate and the lower cavity connecting part, so that airflow loss can be reduced, and noise is reduced.

Drawings

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

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an exploded view of an embodiment of the present invention;

FIG. 4 is a schematic view of another angle according to an embodiment of the present invention;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is a schematic structural view of a wind shielding member according to an embodiment of the present invention;

FIG. 7 is a structural cross-sectional view of an embodiment of the present invention;

fig. 8 is an enlarged schematic view of portion C of fig. 7.

Detailed Description

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

As shown in fig. 1 to 8, the range hood of this embodiment is a split structure, and specifically includes a lower cavity 1 and an upper cavity 2 installed on the top of the lower cavity 1, an air outlet is opened on the top of the lower cavity 1, an air inlet cavity is arranged inside the lower cavity 1, an oil smoke exhaust fan 7 is installed inside the upper cavity 2, the upper cavity 2 includes an air inlet cover plate 21, an air inlet communicated with the air outlet is formed at the bottom of the air inlet cover plate 21, a connecting portion connected with the air inlet cover plate 21 is arranged on the top of the lower cavity 1, and the air inlet cover plate 21 is installed on the connecting portion during installation. The structure is the same as the mounting structure of the upper and lower cavities of the existing upper and lower split range hood, and the description is not repeated here.

In this embodiment, the air intake cover plate 21 is disposed inside the connecting portion, the connecting portion includes a left connecting portion 11 and a right connecting portion 12, a left air intake gap 3 with a downward opening is formed between the left side of the air intake cover plate 21 and the left connecting portion 11, and an air intake gap 3 with an opening facing the right side is formed between the right side of the air intake cover plate 12 and the right connecting portion 12. The existence of this air inlet clearance 3, the air current can flow into this air inlet clearance 3 and produce the air current loss to produce the noise, for this reason, the structure of making an uproar falls in range hood of this embodiment installs the piece 4 that keeps out the wind on the air inlet apron 21, and the piece 4 that keeps out the wind can block that the air current that the air outlet blew out flows in air inlet clearance 3, thereby reduces noise at work.

In this embodiment, the upper cavity 2 is detachably connected to the lower cavity 1, and the specific installation structure is as follows:

lower connecting piece 6 is installed in the outside of lower cavity 1's left side connecting portion 11 and right side connecting portion 12, installs connecting piece 5 on the left side lateral wall of air inlet apron 21 and the right side lateral wall. The lower connecting piece 6 is provided with a hook hole 61, the upper connecting piece 5 is provided with a hook 51, and the hook 51 is abutted against the upper edge of the hook hole 61 to enable the lower connecting piece 6 to be hung on the upper connecting piece 5. Therefore, the upper connecting piece 5 and the lower connecting piece 6 can be detachably connected, so that the lower cavity 1 is hung on the upper cavity 2.

In this embodiment, the lower connecting member 6 is provided with an outer mounting hole 62, the outer mounting hole 62 is located below the hook hole 61, the connecting portion of the corresponding side of the lower cavity 1 is provided with an inner mounting hole 13, and the bolt 8 passes through the inner mounting hole 13 and the outer mounting hole 62 to fix the lower connecting member 6 to the connecting portion of the corresponding side of the lower cavity 1. The left side wall and the right side wall of the air inlet cover plate 21 are provided with inner concave parts 22 for avoiding the bolts 8, and an air inlet gap 3 is formed between each inner concave part 22 and the corresponding side connecting part.

In this embodiment, shelter from air inlet clearance 3 through the piece 4 that keeps out the wind, avoid the air current to get into in the air inlet clearance 3 to reduce the air current noise. As shown in fig. 6, the wind shielding member 4 is U-shaped, the left and right side walls of the wind shielding member 4 are respectively mounted on the left and right

side connecting portions

11 and 12, and the rear wall of the wind shielding member 4 is mounted on the lower cavity rear cover plate 14. The lower part of the wind screen 4 is attached to the lower cavity 1, and there is no installation gap.

As shown in fig. 7 and 8, each of the left and right side walls of the wind screen 4 has a bent portion 41 bent inward, the bent portion 41 can shield the air intake gap 3, and the vertical projection of the concave portion 22 falls on the bent portion 41. Thus, when the airflow flows from bottom to top, the airflow cannot flow into the air inlet gap 3 and also cannot flow to the inverted buckle connection part of the upper connecting piece 5 and the lower connecting piece 6 due to the existence of the bending part 41 of the wind shielding piece 4, so that the airflow loss can be reduced, and the noise is reduced.

In addition, all protruding water conservancy diversion muscle 42 that is equipped with on the lower part inside wall on left side of 4 of keeping out the wind and the lower part inside wall on right side, water conservancy diversion muscle 42 arranges from top to bottom, and water conservancy diversion muscle 42 along fore-and-aft direction interval distribution. The lower portion of the wind shielding member 4 has a vertical portion 43 and an inclined portion 44 extending obliquely outward from the lower portion of the vertical portion, the lower portion of the air guide rib 42 is provided on the inclined portion 44, and the upper portion of the air guide rib 42 is provided on the vertical portion 43. When the airflow flows through the wind shielding part 4, the airflow dispersion phenomenon can be generated due to the abrupt change of the section of the wind shielding part 4, and the flow guide ribs 42 can play a role in scattering the airflow, so that the noise is further reduced.

Claims

1. The utility model provides a structure of making an uproar falls in range hood, includes cavity (1) and last cavity (2) of installation cavity top down, cavity (1) top is opened there is the air outlet down, go up cavity (2) including air inlet apron (21), air inlet apron (21) bottom forms the air intake that is linked together with the air outlet, cavity (1) top down be formed with the connecting portion that air inlet apron (21) are connected, its characterized in that: the inboard of connecting portion is located in air inlet apron (21), connecting portion include left side connecting portion (11) and right side connecting portion (12), be formed with opening air inlet clearance (3) down between the left and right sides of air inlet apron (21) and the connecting portion that correspond the side perhaps install on air inlet apron (21) and keep out the wind piece (4), keep out the wind piece (4) and be used for blockking the air current that the air outlet blew out and flow into in air inlet clearance (3).

2. The noise reduction structure of a range hood according to claim 1, wherein: lower connecting piece (6) is installed in the outside of left side connecting portion (11) and right side connecting portion (12), install on the left side lateral wall of air inlet apron (21) and the right side lateral wall connecting piece (5), go up connecting piece (5) and can dismantle with lower connecting piece (6) and connect.

3. The noise reduction structure of a range hood according to claim 2, wherein: the lower connecting piece (6) is provided with a hook hole (61), the upper connecting piece (5) is provided with a hook (51), and the hook (51) is abutted against the upper edge of the hook hole (61) to enable the lower connecting piece (6) to be hung on the upper connecting piece (5).

4. The noise reduction structure of a range hood according to claim 3, wherein: it has outside mounting hole (62) to open down on connecting piece (6), outside mounting hole (62) are located the below of couple hole (61), it has inboard mounting hole (13) to open on the connecting portion of the corresponding side of cavity (1) down, and bolt (8) pass inboard mounting hole (13) and outside mounting hole (62) and will descend connecting piece (6) to fix on the connecting portion of cavity (1) down be formed with on the left side wall and the right side wall of air inlet apron (21) and be used for dodging interior concave part (22) of bolt (8), form between interior concave part (22) and the connecting portion of the corresponding side air inlet clearance (3).

5. The noise reduction structure of a range hood according to claim 4, wherein: keep out wind piece (4) and install the inboard of left side connecting portion (11) and right side connecting portion (12), the upper portion of keeping out the wind piece (4) has kink (41) of inside bending, kink (41) cover air inlet clearance (3), the vertical projection of interior concave part (22) falls into on kink (41).

6. The noise reduction structure of a range hood according to claim 5, wherein: the utility model discloses a wind screen, including wind-shield piece (4), the lower part inside wall epirelief of wind-shield piece (4) is equipped with water conservancy diversion muscle (42), water conservancy diversion muscle (42) are arranged from top to bottom, and water conservancy diversion muscle (42) along fore-and-aft direction interval distribution.

7. The noise reduction structure of a range hood according to claim 6, wherein: the lower part of the wind shielding piece (4) is attached to the inner walls of the left connecting part (11) and the right connecting part (12).

8. The noise reduction structure of a range hood according to claim 6, wherein: the lower part of the wind shielding piece (4) is provided with a vertical part (43) and an inclined part (44) extending outwards from the lower part of the vertical part to the inclined part, the lower part of the flow guiding rib (42) is arranged on the inclined part (44), and the upper part of the flow guiding rib (42) is arranged on the vertical part (43).

9. The noise reduction structure of a range hood according to claim 1, wherein: keep out wind piece (4) and be the U type, keep out the wind the left and right sides wall of piece (4) and install respectively on left side connecting portion (11) and right side connecting portion (12), keep out the wind the rear wall of piece (4) and install under on cavity back shroud (14).