Range hood

Abstract

An extractor hood comprises an extractor hood body, an upper box body and a lower box body which are communicated with each other, the lower box body can move up and down relative to the upper box body, the lower box body is provided with a smoke inlet and a back face facing a wall, and the upper box body is provided with an air outlet; the rolling wheel is arranged on the back surface of the lower box body in a manner of rotating around a rotating shaft extending left and right in the center of the rolling wheel, and at least part of the peripheral wall of the rolling wheel protrudes relative to the back surface of the lower box body and is used for being in contact with the wall; meanwhile, the roller is integrally made of an elastic solid material, and hollow holes which are through left and right are formed in the roller at intervals in the circumferential direction. Compared with the prior art, due to the design of the hollow holes, the impact force in the moving process of the lower box body can be buffered through the elastic deformation of the rollers in the radial direction, so that the lower box body can stably move up and down, and the influence on the operation of the whole machine is further reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and in particular relates to a fume extractor. Background Art

[0002] In the existing range hoods, in order to achieve height adjustment, the range hood body is generally designed to have a fixed portion and a movable portion that can move up and down relative to the fixed portion, and the position of the movable portion is adjusted by moving up and down.

[0003] Specifically, in the Chinese utility model patent "A noise reduction structure and a lifting range hood using the noise reduction structure" with patent number 202322133624.8 and authorization announcement number CN220506859U, the lifting range hood includes an upper box body and a lower box body, a fan is installed inside the upper box body, the lower box body is arranged on the upper box body and can be lifted and lowered relative to the upper box body, the lower box body forms an air inlet cavity connected to the air inlet of the fan, and a noise reduction structure is installed inside the air inlet cavity, the lower mounting support of the noise reduction structure is fixed on the lower box body and can maintain synchronous lifting and lowering movement with the lower box body, and the upper mounting support is fixed on the upper box body.

[0004] The lower box of the existing range hood will inevitably collide and scrape with the wall on its back side during the up and down movement. Especially when the wall surface is uneven, the movement of the lower box will affect the stability of the whole machine operation. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a range hood in view of the current status of the prior art, so that the movement of the lower box body can be relatively stable.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a range hood, comprising:

[0007] The range hood body comprises an upper box body connected to each other and a lower box body capable of moving up and down relative to the upper box body, wherein the lower box body has a smoke inlet and a back side facing the wall, and the upper box body has an air outlet;

[0008] It is characterized by also including:

[0009] The roller is arranged on the back of the lower box body in a manner that it can rotate around a rotating shaft extending left and right from its center, and at least a portion of the peripheral wall of the roller protrudes relative to the back of the lower box body for contacting the wall; at the same time, the roller is made of a solid material with elasticity as a whole, and hollow holes that pass through the roller are spaced apart along the circumference of the roller.

[0010] The design of the hollow hole in the utility model can realize elastic deformation in the radial direction of the roller to buffer the impact force during the movement of the lower box body, so that the lower box body can move up and down smoothly, thereby reducing the impact on the operation of the whole machine;

[0011] At the same time, the lower box of the utility model is supported on the wall by rollers, which facilitates the up and down movement of the lower box and can prevent the lower box from scratching the wall during the movement.

[0012] To improve the buffering effect, preferably, the cross section of the hollow hole is V-shaped, with a first strip portion and a second strip portion arranged crosswise, the junction of the ends of the first strip portion and the second strip portion forms a V-shaped tip, and the V-shaped opening defined by the first strip portion and the second strip portion is arranged in a clockwise or counterclockwise direction as a whole. The V-shaped hollow hole is conducive to the elastic deformation of the roller in the radial direction.

[0013] Preferably, the angle a between the first strip-shaped portion and the second strip-shaped portion is an obtuse angle.

[0014] Furthermore, the angle a is 100-170°.

[0015] Preferably, the width of the first strip portion and the second strip portion in the transverse direction is 1 to 2 mm.

[0016] The number of hollow holes in the present invention is designed according to the required deformation degree, but in order to ensure the strength of the roller, preferably, the spacing between two adjacent hollow holes in the circumferential direction (ie, the wall thickness of the portion of the roller located between two adjacent hollow holes) is ≥1mm.

[0017] In order to enable the roller to rotate smoothly, preferably, the rotating shaft is fixed relative to the lower box body, and a bearing is provided between the rotating shaft and the roller.

[0018] Preferably, there are at least two rollers, which are spaced apart in the left-right direction.

[0019] Preferably, the back of the lower box body corresponding to each roller is recessed forward to form a groove for the roller to be arranged therein, and the two ends of the rotating shaft are supported on the left and right side walls of the groove. The design of the groove can reduce the impact of oil smoke on the roller and facilitate the installation of the rotating shaft.

[0020] In the above schemes, preferably, the upper box is located above the lower box, and the two are connected by a hose extending up and down, and the hose is arranged to be able to expand and contract as the lower box moves up and down. In addition, the upper part of the lower box can also be inserted into the upper box to connect the two.

[0021] Compared with the prior art, the utility model has the advantages that: the design of the hollow hole in the utility model can realize elastic deformation in the radial direction of the roller to buffer the impact force during the movement of the lower box, so that the lower box can move up and down smoothly, thereby reducing the impact on the operation of the whole machine;

[0022] At the same time, the lower box of the utility model is supported on the wall by rollers, which facilitates the up and down movement of the lower box and can prevent the lower box from scratching the wall during the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0024] Figure 2 It is a structural schematic diagram of another viewing angle of the embodiment of the utility model;

[0025] Figure 3 It is a cross-sectional view of an embodiment of the utility model (the cross-section is a vertical plane extending front and back);

[0026] Figure 4 Another partial cross-sectional view of an embodiment of the utility model (the cross-section is a horizontal plane);

[0027] Figure 5 It is a schematic diagram of the structure of the roller in the embodiment of the utility model. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] like Figures 1 to 5 As shown in FIG. 1 , a preferred embodiment of a range hood of the utility model is shown. The range hood comprises a range hood body 1 and a roller 2 .

[0030] The range hood body 1 comprises an upper housing 11, a lower housing 12 located below the upper housing 11 and capable of moving up and down relative to the upper housing 11, and a hose 13 connecting the upper housing 11 and the lower housing 12. The front side wall of the lower housing 12 comprises a smoke inlet 120, and the lower housing 12 comprises a back surface facing the wall, and a part of the back surface is concave forward to form a groove 121 with an opening facing backward. The upper housing 11 comprises an air outlet 110. The hose 13 is arranged to be able to extend and retract as the lower housing 12 moves up and down.

[0031] The roller 2 is arranged in a groove 121 on the back of the lower box 12 in a manner that it can rotate around a rotating shaft 21 extending left and right from its center (the two ends of the rotating shaft 21 are supported on the left and right side walls of the groove 121 and are fixed relative to the groove wall of the groove 121. A bearing 3 is provided between the rotating shaft 21 and the roller 2 so that the roller 2 can rotate smoothly), and a part of the peripheral wall of the roller 2 protrudes relative to the back of the lower box 12 for contacting the wall; at the same time, the roller 2 is made of a solid elastic material as a whole, and hollow holes 22 that penetrate the roller 2 to the left and right are spaced apart along the circumferential direction. The cross-section of the hollow hole 22 is V-shaped, with a first strip portion 221 and a second strip portion 222 that are cross-arranged. The connection between the ends of the first strip portion 221 and the second strip portion 222 constitutes a V-shaped tip, and the V-shaped opening defined by the first strip portion 221 and the second strip portion 222 is arranged in a clockwise or counterclockwise rotation direction as a whole. And as Figure 5 As shown, the angle a between the first strip portion 221 and the second strip portion 222 is 100-170° (the angle a can be any value between 100-170°, such as 100°, 120°, 150°, 170°, etc.). At the same time, in this embodiment, the width of the first strip portion 221 and the second strip portion 222 of the hollow hole 22 in the horizontal direction is 1-2 mm (the width can be any value between 1-2 mm, such as 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, etc.). The number of the hollow holes 22 is designed according to the required deformation degree, but in order to ensure the strength of the roller, the spacing between two adjacent hollow holes 22 in the circumferential direction is ≥1 mm.

[0032] Meanwhile, in this embodiment, there are two rollers 2 , which are arranged in the corresponding grooves 121 at intervals along the left-right direction.

[0033] The design of the V-shaped hollow hole in this embodiment can realize elastic deformation in the radial direction of the roller 2 to buffer the impact force during the movement of the lower box 12, thereby reducing the impact on the operation of the entire machine.

[0034] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0035] The term "radial" is also used in the specification and claims of the present utility model, which means basically along the inward and outward direction, and is not limited to the radial direction passing through the center of the circle, and can also be slightly deviated from the radial direction.

Claims

1. A range hood, comprising: A range hood body (1) comprises an upper box body (11) and a lower box body (12) which is movable up and down relative to the upper box body (11); the lower box body (12) has a smoke inlet (120) and a back side facing a wall; and the upper box body (11) has an air outlet (110); Features Also included are: The roller (2) is arranged on the back side of the lower box body (12) in a manner that it can rotate around a rotating shaft (21) extending left and right from the center thereof, and at least a portion of the peripheral wall of the roller (2) protrudes relative to the back side of the lower box body (12) for contacting the wall; at the same time, the roller (2) is made of a solid elastic material as a whole, and hollow holes (22) are provided on the roller (2) at intervals along the circumference thereof and pass through the roller (2) left and right.

2. The range hood according to claim 1, characterized in that: The hollow hole (22) has a V-shaped cross section and comprises a first strip portion (221) and a second strip portion (222) arranged crosswise, wherein the junction between the ends of the first strip portion (221) and the second strip portion (222) forms a V-shaped tip, and the V-shaped opening defined by the first strip portion (221) and the second strip portion (222) is arranged in a clockwise or counterclockwise direction as a whole.

3. The range hood according to claim 2, characterized in that: The included angle a between the first strip-shaped portion (221) and the second strip-shaped portion (222) is an obtuse angle.

4. The range hood according to claim 3, characterized in that: The angle a is 100-170°.

5. The range hood according to claim 2, characterized in that: The width of the first strip-shaped portion (221) and the second strip-shaped portion (222) in the transverse direction is 1 to 2 mm.

6. The range hood according to claim 5, characterized in that: The spacing between two adjacent hollow holes (22) in the circumferential direction is ≥1 mm.

7. The range hood according to claim 1, characterized in that: The rotating shaft (21) is fixed relative to the lower box body (12), and a bearing (3) is provided between the rotating shaft (21) and the roller (2).

8. The range hood according to claim 1, characterized in that: There are at least two rollers (2), which are arranged at intervals in the left-right direction.

9. The range hood according to claim 1, characterized in that: The back side of the lower box (12) corresponding to each roller (2) is recessed forward to form a groove (121) for the roller (2) to be arranged therein, and the two ends of the rotating shaft (21) are supported on the left and right side walls of the groove (121).

10. The range hood according to any one of claims 1 to 9, characterized in that: The upper box (11) is located above the lower box (12), and the two are connected via a hose (13) extending up and down. The hose (13) is arranged to be able to expand and contract as the lower box (12) moves up and down.

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