Range hood

Abstract

The utility model discloses a range hood, which belongs to the technical field of kitchen appliances and comprises a main machine box body, a smoke collecting box body and a noise reduction structure, the smoke collecting box body is arranged on the main machine box body in a sliding mode, and the smoke collecting box body can ascend and descend between a first position and a second position in the vertical direction relative to the main machine box body. A movement gap is formed between the smoke collecting box body and the main machine box body; the noise reduction structure comprises a first noise reduction part and a second noise reduction part, the first noise reduction part is arranged on the main machine box body, at least part of the first noise reduction part is located in the movement gap, the second noise reduction part is arranged on the smoke collection box body, and when the smoke collection box body descends to the second position, the second noise reduction part abuts against the first noise reduction part to seal the movement gap. The pneumatic noise generated by the range hood is effectively prevented from leaking outwards along the movement gap, and the noise of the whole machine is reduced. The noise reduction structure is arranged to be of a split structure, interference to movement of the smoke collection box is avoided, sealing is achieved in an abutting mode, and the noise reduction structure cannot be abraded.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a range hood. Background Art

[0002] Range hoods are kitchen appliances that purify the kitchen environment, operating on the principles of fluid dynamics. Lift-type range hoods feature a smoke collection box that can be raised and lowered vertically relative to the main unit. When not in use, the smoke collection box can be raised and hidden within the main unit. This aesthetically pleasing design saves kitchen space and is increasingly popular among consumers.

[0003] Because the smoke collection box can be raised and lowered relative to the main unit, a gap exists between them to ensure smooth movement. Because the operating noise of a range hood is primarily low- to medium-frequency, with short wavelengths and strong penetrating power, it can easily pass through obstacles. Therefore, the noise leaks out through this gap, increasing the overall noise level. Utility Model Content

[0004] The purpose of the utility model is to provide a range hood to reduce the noise of the range hood.

[0005] As conceived above, the technical solution adopted by the utility model is:

[0006] A range hood, comprising:

[0007] Host box;

[0008] The smoke collecting box is slidably arranged on the main box, and the smoke collecting box can be raised and lowered between a first position and a second position relative to the main box in a vertical direction, and a movement gap is formed between the smoke collecting box and the main box;

[0009] The noise reduction structure includes a first noise reduction component and a second noise reduction component. The first noise reduction component is arranged on the main body case, and at least part of the first noise reduction component is located in the movement gap. The second noise reduction component is arranged on the smoke collection box. When the smoke collection box descends to the second position, the second noise reduction component abuts against the first noise reduction component to seal the movement gap.

[0010] As a preferred solution, the first noise reduction member has a first contact surface, and the second noise reduction member has a second contact surface. When the second noise reduction member abuts against the first noise reduction member, the first contact surface and the second contact surface fit together to form a surface seal.

[0011] As a preferred solution, the first contact surface is a plane and the angle between the first contact surface and the vertical direction is greater than 0 degrees and less than or equal to 90 degrees, and the second contact surface is parallel to the first contact surface.

[0012] As a preferred solution, the first noise reduction component includes a protrusion, the top surface of the protrusion is the first contact surface, and the second noise reduction component includes a groove, the bottom surface of the groove is the second contact surface.

[0013] As a preferred solution, the side surface of the protrusion portion abuts against the side surface of the groove portion.

[0014] As a preferred solution, the first contact surface and the second contact surface are both curved surfaces and can fit together.

[0015] As a preferred solution, the movement gap extends in a U shape around the circumference of the smoke collecting box, the first noise reduction member and the second noise reduction member are both U-shaped, and the second noise reduction member is distributed on the front side and left and right sides of the smoke collecting box.

[0016] As a preferred solution, the first noise reduction component is a split structure, comprising a fixed portion and a movable portion, wherein the fixed portion is fixedly connected to the main housing, and the movable portion is slidably connected to the main housing and can abut against the smoke collection box.

[0017] As a preferred solution, the first noise reduction component includes three movable parts, a fixed part is provided between adjacent movable parts, the fixed part is arranged relative to the corner position of the smoke collecting box, and the movable parts are distributed on the front side and left and right sides of the smoke collecting box.

[0018] As a preferred solution, a accommodating cavity is provided inside the main housing, the smoke collecting box is located in the accommodating cavity when in the first position, a fan is provided in the accommodating cavity, and the second noise reduction component is spaced apart from the fan.

[0019] Beneficial effects of the utility model:

[0020] The range hood proposed by the utility model has a smoke collection box that can be raised and lowered vertically between a first position and a second position relative to the main housing. When not in use, the smoke collection box is in the first position, and when in use, the smoke collection box is lowered to the second position. A movement gap is formed between the smoke collection box and the main housing. When the smoke collection box is lowered to the second position, the second noise reduction member abuts against the first noise reduction member to seal the movement gap, effectively preventing aerodynamic noise generated by the range hood from leaking outward along the movement gap and reducing the noise of the entire machine. By providing a split noise reduction structure, interference with the movement of the smoke collection box is avoided, and sealing is achieved by abutting, which does not cause wear of the noise reduction structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural diagram of the range hood provided in the first embodiment;

[0022] Figure 2 This is a front view of the range hood provided in the first embodiment;

[0023] Figure 3 yes Figure 2AA section view;

[0024] Figure 4 yes Figure 3 Enlarged view of point B;

[0025] Figure 5 This is a schematic diagram of the structure of the first noise reduction component and the mainframe housing provided in the first embodiment;

[0026] Figure 6 yes Figure 5 Enlarged view of point C;

[0027] Figure 7 This is a schematic structural diagram of the cooperation between the second noise reduction component and the smoke collection box provided in the first embodiment;

[0028] Figure 8 is a schematic structural diagram of the second noise reduction component provided in the first embodiment;

[0029] Figure 9 yes Figure 8 Enlarged view of point D;

[0030] Figure 10 is a cross-sectional view of the range hood provided in the second embodiment;

[0031] Figure 11 yes Figure 10 Enlarged view of point E;

[0032] Figure 12 is a cross-sectional view of the range hood provided in the third embodiment;

[0033] Figure 13 yes Figure 12 Enlarged view of point F;

[0034] Figure 14 is a first cross-sectional view of the range hood provided in the fourth embodiment;

[0035] Figure 15 yes Figure 14 Enlarged view of point G;

[0036] Figure 16 This is a first schematic diagram of the first noise reduction component provided in the fourth embodiment;

[0037] Figure 17 This is a second schematic diagram of the first noise reduction component provided in the fourth embodiment;

[0038] Figure 18 is a second cross-sectional view of the range hood provided in the fourth embodiment;

[0039] Figure 19 yes Figure 18 Enlarged view of point H.

[0040] In the picture:

[0041] 100. Exercise interval;

[0042] 10. Mainframe housing; 101. Accommodation cavity; 102. Mounting port; 11. First housing; 12. First back panel;

[0043] 20. Smoke collection box; 201. Smoke collection chamber; 202. Air inlet; 21. Second outer shell; 22. Second back panel; 23. Flap;

[0044] 30. Noise reduction structure; 31. First noise reduction member; 311. First contact surface; 312. Raised portion; 313. First connecting portion; 314. Fixed portion; 315. Movable portion; 32. Second noise reduction member; 321. Second contact surface; 322. Grooved portion; 33. Driving member;

[0045] 40. Fan;

[0046] 50. Drive assembly; 51. Motor; 52. Screw; 53. Nut. DETAILED DESCRIPTION

[0047] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0048] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0049] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0050] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0051] Example 1

[0052] See also Figures 1 to 9 The present embodiment provides a range hood, including a main body 10 and a smoke collection box 20. The smoke collection box 20 is slidably arranged on the main body 10. The smoke collection box 20 can be raised and lowered between a first position and a second position relative to the main body 10 in a vertical direction. When not in use, the smoke collection box 20 is located in the first position. When in use, the smoke collection box 20 is lowered to the second position.

[0053] The front, back, left, right, and up and down directions are defined with reference to the main housing 10. Typically, the front side of the main housing 10 faces the operator, a stove is provided below the main housing 10, and the smoke collecting box 20 moves downward to be closer to the stove, thereby improving the smoking effect.

[0054] The main housing 10 has a housing 101 within it. When in the first position, the smoke collector 20 is located within this cavity 101, making it aesthetically pleasing and conserving kitchen space. The bottom of the main housing 10 has a mounting opening 102, through which the smoke collector 20 exits when away from the first position.

[0055] The smoke collection box 20 has a smoke collection chamber 201 disposed therein. An air inlet 202 communicating with the smoke collection chamber 201 is provided on the front side of the smoke collection box 20. When the smoke collection box 20 is in the second position, the air inlet 202 is located below the main housing 10. A flap 23 can be provided at the air inlet 202. When in use, the flap 23 is opened to guide air.

[0056] A fan 40 is provided in the accommodating chamber 101 of the main housing 10 . When in use, the fan 40 is turned on to guide the external oil smoke into the smoke collecting chamber 201 from the air inlet 202 and then discharged through the fan 40 .

[0057] The range hood also includes a drive assembly 50, which is arranged in the main housing 10 and can drive the smoke collection box 20 to move. The drive assembly 50 can adopt an existing air cylinder or hydraulic cylinder. In this embodiment, the drive assembly 50 includes a motor 51, a screw 52 and a nut 53. The motor 51 is used to drive the screw 52 to rotate. The nut 53 is threadedly connected to the screw 52 and is slidably connected to the main housing 10. The smoke collection box 20 is fixedly connected to the nut 53. When adjusting the position of the smoke collection box 20, the motor 51 drives the screw 52 to rotate so that the nut 53 moves along the screw 52, ​​thereby driving the smoke collection box 20 to rise and fall.

[0058] A movement gap 100 is formed between the smoke collecting box 20 and the main box 10 to ensure that the smoke collecting box 20 can be raised and lowered smoothly. The range hood also includes a noise reduction structure 30, which includes a first noise reduction component 31 and a second noise reduction component 32. The first noise reduction component 31 is arranged on the main box 10, and at least part of the first noise reduction component 31 is located in the movement gap 100. The second noise reduction component 32 is arranged on the smoke collecting box 20. When the smoke collecting box 20 descends to the second position, the second noise reduction component 32 abuts against the first noise reduction component 31 to seal the movement gap 100, effectively preventing the aerodynamic noise generated by the range hood from leaking outward along the movement gap 100, thereby reducing the noise of the entire machine. By setting the noise reduction structure 30 as a split structure, interference with the movement of the smoke collecting box 20 is avoided, and sealing is achieved by abutting, which will not cause wear of the noise reduction structure 30. In addition, the second noise reduction member 32 and the first noise reduction member 31 abut against each other to seal the movement gap 100, thereby preventing pressure release and ensuring the oil fume absorption effect.

[0059] When the smoke collecting box 20 is in the first position, it is located in the accommodating chamber 101 . A fan 40 is provided in the accommodating chamber 101 . The second noise reducing member 32 is spaced apart from the fan 40 to prevent interference between the second noise reducing member 32 and the fan 40 when the smoke collecting box 20 moves.

[0060] The first noise reduction member 31 and the second noise reduction member 32 can be made of existing foam noise reduction materials. On the one hand, they can play a noise reduction role. On the other hand, due to the certain elasticity of the foam, the smoke collecting box 20 will not be jerked when the first noise reduction member 31 and the second noise reduction member 32 abut against each other.

[0061] The second noise reducing member 32 can be bonded to the smoke collecting box 20. As the smoke collecting box 20 rises and falls, the second noise reducing member 32 moves downward until it contacts the first noise reducing member 31. The second noise reducing member 32 and the first noise reducing member 31 can form a line seal or a surface seal when in contact.

[0062] To increase the contact area, the first noise reducer 31 has a first contact surface 311, and the second noise reducer 32 has a second contact surface 321. When the second noise reducer 32 abuts the first noise reducer 31, the first contact surface 311 and the second contact surface 321 mate to form a surface seal. Compared to a line seal, a surface seal is more effective and can better prevent noise leakage.

[0063] The first contact surface 311 can be a plane or a curved surface. In this embodiment, the first contact surface 311 is a plane and extends in the horizontal direction, that is, the angle with the vertical direction is equal to 90 degrees, and the second contact surface 321 is parallel to the first contact surface 311.

[0064] The first contact surface 311 can be the top of the first noise reducer 31, or the first noise reducer 31 can include a raised portion 312, with the top surface of the raised portion 312 serving as the first contact surface 311. The second contact surface 321 can be the bottom surface of the second noise reducer 32, or the second noise reducer 32 can include a groove 322, with the bottom surface of the groove 322 serving as the second contact surface 321. As the smoke collection box 20 moves downward, the second noise reducer 32 moves downward until the groove 322 engages with the raised portion 312, achieving contact between the first contact surface 311 and the second contact surface 321.

[0065] In this embodiment, the first noise reduction member 31 further includes a first connecting portion 313, which is connected to the mainframe housing 10, specifically by bonding. The raised portion 312 is provided on the side of the first connecting portion 313 close to the motion gap 100. The raised portion 312 has a rectangular cross-sectional shape, and further includes a side surface and a bottom surface. The groove portion 322 is provided at the corner of the second noise reduction member 32 close to the first noise reduction member 31. The groove portion 322 has an L-shaped cross-sectional shape, and further includes a side surface. The side surface of the raised portion 312 abuts against the side surface of the groove portion 322, increasing the contact area between the raised portion 312 and the groove portion 322, so that the noise reduction structure 30 is sealed in both the horizontal and vertical directions, further improving the noise reduction effect.

[0066] In this embodiment, since a drive assembly 50 is provided on the rear side of the smoke collecting box 20, the movement gap 100 is distributed on the front side and left and right sides of the smoke collecting box 20, that is, the movement gap 100 extends in a U-shape around the circumference of the smoke collecting box 20. Correspondingly, the first noise reduction component 31 and the second noise reduction component 32 are both U-shaped to achieve comprehensive sealing of the movement gap 100.

[0067] The main housing 10 includes a first shell 11 and a first back panel 12. The first shell 11 and the first back panel 12 are connected to form a housing 101. The first shell 11 includes a first front panel, a first bottom panel, and two first side panels. The mounting opening 102 is provided on the first bottom panel, and the first noise reduction components 31 are distributed in front of and on both sides of the mounting opening 102. The vertical distance between the first noise reduction components 31 and the mounting opening 102 can be set according to actual needs. An extension plate is provided on the inner side of the first shell 11 around the circumference of the mounting opening 102. The first noise reduction components 31 can be connected to the extension plate or spaced apart from the extension plate.

[0068] The smoke collection box 20 includes a second outer shell 21 and a second back panel 22, which are connected to form a smoke collection chamber 201. The second outer shell 21 includes a second front panel, a second bottom panel, and two second side panels. The air inlet 202 is provided on the second front panel, and the second bottom panel is provided with an oil collection chamber. The second noise reduction member 32 can be provided on the top or side of the smoke collection box 20. The second noise reduction member 32 is located on the front and left and right sides of the smoke collection box 20.

[0069] Example 2

[0070] Figure 10 and Figure 11 Embodiment 2 is shown, in which the parts that are the same as or corresponding to those in embodiment 1 are denoted by the corresponding reference numerals in embodiment 1. For the sake of simplicity, only the differences between embodiment 2 and embodiment 1 are described. The difference is that the first contact surface 311 is a plane and the angle with the vertical direction is greater than 0 degrees and less than 90 degrees, that is, the first contact surface 311 extends obliquely relative to the vertical direction, and the second contact surface 321 is parallel to the first contact surface 311. When the first noise reduction component 31 abuts the second noise reduction component 32, the oblique contact between the first contact surface 311 and the second contact surface 321 makes the contact closer. Even if there is a slight error in the movement stroke of the smoke collecting box 20, close contact can be guaranteed, and the first noise reduction component 31 will not be excessively squeezed.

[0071] Specifically, the first noise reducer 31 includes a raised portion 312, the top surface of which is a first contact surface 311. The first contact surface 311 extends into the movement gap 100 and extends obliquely downward. A second contact surface 321 is obliquely disposed at a corner of the second noise reducer 32 near the first noise reducer 31.

[0072] Example 3

[0073] Figure 12 and Figure 13 A third embodiment is shown, wherein components identical or corresponding to those in the first embodiment are denoted by the corresponding reference numerals. For simplicity, only the differences between the third embodiment and the first embodiment are described. The difference lies in that both the first contact surface 311 and the second contact surface 321 are curved and conformable. When the first noise reduction member 31 abuts the second noise reduction member 32, the curved contact between the first contact surface 311 and the second contact surface 321 increases the contact area, resulting in closer contact and improved noise reduction.

[0074] The curved surface may be wavy, sawtooth or other shapes. The second contact surface 321 may include a plurality of protrusions, and the first contact surface 311 may be provided with a plurality of recesses correspondingly, with the protrusions inserted into the recesses.

[0075] Example 4

[0076] Figures 14 to 19 A fourth embodiment is shown, wherein components identical or corresponding to those in the first embodiment are denoted by the corresponding reference numerals. For simplicity, only the differences between the fourth embodiment and the first embodiment are described. The difference lies in the fact that the first noise reduction member 31 is a split structure, comprising a fixed portion 314 and a movable portion 315. The fixed portion 314 is fixedly connected to the main housing 10, while the movable portion 315 is slidably connected to the main housing 10 and capable of abutting against the smoke collection box 20.

[0077] The smoke collection box 20 can be raised and lowered vertically relative to the main housing 10 between a first position and a second position. When not in use, the smoke collection box 20 is in the first position. When in use, the smoke collection box 20 can be in the second position or in a position intermediate between the first and second positions. By changing the position of the smoke collection box 20, the distance between the smoke collection box 20 and the stove can be adjusted to accommodate operators of different heights.

[0078] When the smoke collecting box 20 stops at a position midway between the first position and the second position and is in use, the second noise reducing member 32 is located above the first noise reducing member 31 and cannot abut against the first noise reducing member 31. In order to adapt to different usage scenarios, this embodiment provides the first noise reducing member 31 with a split structure, with the fixed portion 314 fixedly connected to the main housing 10 and the movable portion 315 slidably connected to the main housing 10. When the smoke collecting box 20 stops at a position midway between the first position and the second position and is in use, the movable portion 315 can slide relative to the main housing 10 until it abuts against the smoke collecting box 20, thereby sealing at least part of the movement gap 100 and reducing noise.

[0079] Since the movement gap 100 is U-shaped and the first noise reduction member 31 is set in a U-shape, the first noise reduction member 31 is set as a split structure instead of the entire moving first noise reduction member 31 to seal the movement gap 100 as much as possible and avoid interference during movement.

[0080] Regarding the first noise reduction member 31, the number of fixed parts 314 and movable parts 315 can be set according to actual needs. A driving member 33 is provided for each movable part 315 to drive the movable part 315 to move. The driving member 33 can be an existing cylinder or hydraulic cylinder.

[0081] In this embodiment, the first noise reduction member 31 includes three movable portions 315, with a fixed portion 314 disposed between adjacent movable portions 315. The fixed portions 314 are disposed relative to the corners of the smoke collecting box 20, and the movable portions 315 are distributed on the front side and left and right sides of the smoke collecting box 20. For ease of description, the movable portions 315 are configured to be movable between a third position and a fourth position. When the smoke collecting box 20 is stopped at an intermediate position between the first position and the second position and is in use, each movable portion 315 moves toward the fourth position to approach the smoke collecting box 20 until it abuts against the smoke collecting box 20, while the fixed portions 314 remain stationary.

[0082] As the smoke collection box 20 continues to descend, each movable portion 315 moves to a third position away from the smoke collection box 20 to prevent interference between the first noise reduction member 31 and the second noise reduction member 32. When the smoke collection box 20 descends to the second position, the first noise reduction member 31 is located in the third position, allowing the second noise reduction member 32 to abut against the first noise reduction member 31.

[0083] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications are possible without departing from the spirit and scope of the present invention. Such changes and modifications are within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A range hood, characterized in that: include: Mainframe housing (10); A smoke collecting box (20) is slidably arranged on the main housing (10), and the smoke collecting box (20) can be raised and lowered between a first position and a second position relative to the main housing (10) in a vertical direction, with a movement gap (100) formed between the smoke collecting box (20) and the main housing (10); A noise reduction structure (30) comprises a first noise reduction member (31) and a second noise reduction member (32), wherein the first noise reduction member (31) is arranged on the main housing (10), and at least a portion of the first noise reduction member (31) is located in the movement gap (100); the second noise reduction member (32) is arranged on the smoke collecting box (20), and when the smoke collecting box (20) descends to the second position, the second noise reduction member (32) abuts against the first noise reduction member (31) to seal the movement gap (100).

2. The range hood according to claim 1, characterized in that: The first noise reduction member (31) has a first contact surface (311), and the second noise reduction member (32) has a second contact surface (321). When the second noise reduction member (32) abuts against the first noise reduction member (31), the first contact surface (311) and the second contact surface (321) fit together to form a surface seal.

3. The range hood according to claim 2, characterized in that: The first contact surface (311) is a plane and has an angle with the vertical direction greater than 0 degrees and less than or equal to 90 degrees, and the second contact surface (321) is parallel to the first contact surface (311).

4. The range hood according to claim 3, characterized in that: The first noise reduction member (31) includes a protrusion (312), the top surface of the protrusion (312) is the first contact surface (311), and the second noise reduction member (32) includes a groove (322), the bottom surface of the groove (322) is the second contact surface (321).

5. The range hood according to claim 4, characterized in that: The side surface of the protruding portion (312) abuts against the side surface of the groove portion (322).

6. The range hood according to claim 2, characterized in that: The first contact surface (311) and the second contact surface (321) are both curved surfaces and can fit together.

7. The range hood according to claim 1, characterized in that: The movement gap (100) extends in a U-shape around the circumference of the smoke collecting box (20), the first noise reduction member (31) and the second noise reduction member (32) are both U-shaped, and the second noise reduction member (32) is distributed on the front side and left and right sides of the smoke collecting box (20).

8. The range hood according to claim 7, characterized in that: The first noise reduction component (31) is a split structure, comprising a fixed portion (314) and a movable portion (315), wherein the fixed portion (314) is fixedly connected to the main housing (10), and the movable portion (315) is slidably connected to the main housing (10) and is capable of abutting against the smoke collecting box (20).

9. The range hood according to claim 8, characterized in that: The first noise reduction component (31) includes three movable parts (315), one fixed part (314) is provided between adjacent movable parts (315), the fixed part (314) is arranged relative to the corner position of the smoke collecting box (20), and the movable parts (315) are distributed on the front side and left and right sides of the smoke collecting box (20).

10. The range hood according to any one of claims 1 to 9, characterized in that: The main housing (10) is provided with an accommodating chamber (101) therein, the smoke collecting box (20) is located in the accommodating chamber (101) when in the first position, a fan (40) is provided in the accommodating chamber (101), and the second noise reduction component (32) is spaced apart from the fan (40).

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