Range hood

Abstract

The utility model relates to a range hood, which comprises a fan frame and an exhaust fume collecting hood arranged at the bottom of the fan frame, and is characterized in that the exhaust fume collecting hood comprises a first exhaust fume collecting hood arranged on the left side of the fan frame and a second exhaust fume collecting hood arranged on the right side of the fan frame, and a driving mechanism for driving the first exhaust fume collecting hood and the second exhaust fume collecting hood to do relative motion in the left-right direction is arranged on the side wall of the mounting frame. The driving mechanism of the range hood can drive the first exhaust fume collecting hood and the second exhaust fume collecting hood on the left side and the right side of the fan frame to do relative movement in the left-right direction, so that the width size of the whole range hood is changed, the exhaust fume collecting area of the range hood can be adjusted left and right, and the range hood can be automatically consistent with a cabinet in left-right size after being installed; in addition, under the user installation environment that no cabinet is installed, the size can be as small as possible in the shutdown state, and the smoke gathering area can be enlarged as far as possible in the working process.

Description

Technical Field

[0001] The utility model relates to an oil fume purification device, in particular to a range hood. Background Art

[0002] Range hoods are common appliances in modern kitchens. They primarily use a centrifugal fan installed inside the hood to absorb and exhaust oil fumes, and use a filter to filter out some grease particles. In real life, range hoods are usually used in conjunction with kitchen cabinets. Traditional range hoods are designed with widths of 600mm, 800mm, and 900mm. Due to the limitations of the overall kitchen size during the cabinet design process, some users can only choose range hoods that are an order of magnitude smaller in width for installation, resulting in a mismatch between the range hood and the cabinet space. Furthermore, small-sized range hoods cover a smaller negative pressure area, making it easier for oil fumes to escape, and their smoke collection ability is relatively poor. If the range hood is installed separately without a wall cabinet, the range hood's fume extraction effect will also be poor, and the cabinet's storage space will not be effectively utilized.

[0003] For this reason, it is necessary to further improve the structure of the range hood. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a range hood with adjustable width in response to the above-mentioned existing technical status.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the range hood includes a fan frame and a smoke collecting hood arranged at the bottom of the fan frame, and is characterized in that: the smoke collecting hood includes a first smoke collecting hood arranged on the left side of the fan frame and a second smoke collecting hood arranged on the right side of the fan frame, and the fan frame is also provided with a mounting frame, and the side wall of the mounting frame is provided with a driving mechanism that drives the first smoke collecting hood and the second smoke collecting hood to move relative to each other in the left and right directions.

[0006] To achieve movement of the smoke hood, the drive mechanism preferably includes a drive source, a connecting rod assembly, and a gear assembly. Driven by the drive source, the connecting rod assembly and the gear assembly drive the first and second smoke hoods to move relative to each other in the left-right direction. The mounting frame is partially fixed to the fan frame. Driven by the drive source, the connecting rod assembly and the gear assembly on the side wall of the mounting frame cooperate to transmit power, thereby achieving translational movement of the first and second smoke hoods in the left-right direction.

[0007] To achieve transmission, the gear assembly preferably includes a first gear and a second gear that mesh with each other. A first gear shaft is provided at the center of the first gear, and a second gear shaft is provided at the center of the second gear. The first gear shaft and the second gear shaft are both rotatably connected to the mounting bracket. When one gear rotates, the other meshing gear also rotates synchronously, thereby achieving transmission.

[0008] For ease of installation, the first and second gears are preferably fan-shaped. The mounting frame is relatively small, requiring the installation of multiple components such as a gear assembly and a connecting rod assembly on its sidewalls. Fan-shaped gears can meet transmission requirements while facilitating the arrangement of the connecting rods.

[0009] In order to achieve control over different smoke hoods, preferably, the connecting rod assembly includes a first connecting rod and a second connecting rod arranged on one side of the side wall, and a third connecting rod and a fourth connecting rod arranged on the other side, wherein the first ends of the first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod are rotatably connected to the mounting bracket, and the second ends of the first connecting rod and the second connecting rod are rotatably connected to the second smoke hood; and the second ends of the third connecting rod and the fourth connecting rod are rotatably connected to the first smoke hood. The first and second connecting rods are arranged on the left side of the side wall to drive the movement of the second smoke hood, and the first and second connecting rods remain parallel; the third and fourth connecting rods are arranged on the right side of the side wall to drive the movement of the first smoke hood, and the third and fourth connecting rods remain parallel.

[0010] In order to make the transmission process more stable, as an option, the connecting rod assembly also includes a fifth connecting rod and a sixth connecting rod, the first ends of the fifth connecting rod and the second connecting rod are fixed to the first gear shaft, the first ends of the sixth connecting rod and the third connecting rod are fixed to the second gear shaft, and the second ends of the fifth connecting rod and the sixth connecting rod are both rotatably connected to the mounting bracket. In the process of rotation of the first gear, since the first gear shaft is fixed to the first ends of the fifth connecting rod and the second connecting rod, the fifth connecting rod and the second connecting rod rotate synchronously and drive the second smoke hood connected below to perform translational movement in the left and right directions; similarly, during the rotation of the second gear, since the second gear shaft is fixed to one end of the sixth connecting rod and the third connecting rod, the sixth connecting rod and the third connecting rod rotate synchronously and drive the first smoke hood connected below to perform translational movement in the left and right directions.

[0011] To provide power for the gear rotation, the drive source is preferably a motor, the output shaft of which is connected to the first gear shaft and / or the second gear shaft. The motor, as a drive source, can provide power for the gear rotation. The motor can be connected to the gear shafts of two gears to drive both gears to rotate synchronously, or connected to the gear shaft of one gear to drive the other gear to move synchronously.

[0012] To enhance aesthetics, the mounting bracket is preferably positioned within the fan frame, with a mounting cavity formed between the sidewalls of the mounting bracket and the inner wall of the fan frame, and the gear assembly and connecting rod assembly positioned within the mounting cavity. When the mounting bracket is positioned within the fan frame, the drive mechanisms located on the sidewalls of the fan frame are concealed within the mounting cavity between the fan frame and the sidewalls of the mounting bracket, resulting in a cleaner and more aesthetically pleasing range hood from the outside.

[0013] To increase the smoke-collecting area, the first smoke hood and the second smoke hood are preferably spaced apart, with a connecting portion provided between them. The first smoke hood and the second smoke hood are spaced apart in the left-right direction, and the first and second smoke hoods can move relative to the connecting portion in the left-right direction. The connection portion provides a larger smoke-collecting area than an overlapping arrangement of the first and second smoke hoods.

[0014] Compared with the prior art, the advantages of the present invention are: a first smoke hood is provided on the left side of the fan frame of the range hood, a second smoke hood is provided on the right side of the fan frame, a mounting frame is provided on the fan frame, and a driving mechanism provided on the side wall of the mounting frame can drive the first smoke hood and the second smoke hood to move relative to each other in the left and right directions, thereby realizing the change of the width of the entire range hood, realizing that the smoke collection area of the range hood can be adjusted left and right, and realizing that it can automatically be consistent with the left and right dimensions of the cabinet after installation, thereby improving the matching performance with the user's cabinet and improving the oil fume extraction effect. In addition, in the user installation environment where a cabinet is not installed, the size of the machine can be as small as possible when it is turned off, and the smoke cage area can be expanded as much as possible when it is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure in another direction;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of an embodiment of the present utility model (omitting the fan and fan frame);

[0018] Figure 4 This is a rear view of the embodiment of the utility model in working state (the fan and fan frame are omitted);

[0019] Figure 5 This is a rear view of an embodiment of the present invention in a non-working state (the fan and fan frame are omitted).

[0020] In the figure: 1. Fan frame; 2. Smoke hood; 21. First smoke hood; 22. Second smoke hood; 3. Connecting part; 4. Driving mechanism; 41. Connecting rod assembly; 411. First connecting rod; 412. Second connecting rod; 413. Third connecting rod; 414. Fourth connecting rod; 415. Fifth connecting rod; 416. Sixth connecting rod; 42. Gear assembly; 421. First gear; 4211. First gear shaft; 422. Second gear; 4221. Second gear shaft; 5. Mounting frame; 51. Side wall. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 5 The figure shows a preferred embodiment of the present invention. The range hood comprises a fan frame 1 and a fume hood 2 disposed at the bottom of the fan frame 1. The fume hood 2 comprises a first fume hood 21 disposed on the left side of the fan frame 1 and a second fume hood 22 disposed on the right side of the fan frame 1. A mounting frame 5 is also provided on the fan frame 1. A drive mechanism 4 is provided on the sidewall 51 of the mounting frame 5 to drive the first fume hood 21 and the second fume hood 22 to move relative to each other in the left-right direction.

[0023] refer to Figures 3 to 5The driving mechanism 4 includes a driving source, a connecting rod assembly 41 and a gear assembly 42. Under the drive of the driving source, the first smoke hood 21 and the second smoke hood 22 are driven to move relative to each other in the left and right directions through the transmission of the connecting rod assembly 41 and the gear assembly 42. The mounting frame 5 is set on the fan frame 1. Under the drive of the driving source, the connecting rod assembly 41 and the gear assembly 42 on the side wall 51 of the mounting frame 5 cooperate with each other to transmit and realize the translational movement of the first smoke hood 21 and the second smoke hood 22 in the left and right directions. Among them, the gear assembly 42 includes a first gear 421 and a second gear 422 that are meshed with each other. A first gear shaft 4211 is provided at the center of the circle of the first gear 421, and a second gear shaft 4221 is provided at the center of the circle of the second gear 422. The first gear shaft 4211 and the second gear shaft 4221 are both rotatably connected to the mounting frame 5. The driving source is a motor, and the motor is connected to the first gear shaft 4211. Among them, the first gear 421 and the second gear 422 can both serve as driving wheels. In this embodiment, the first gear 421 is preferably used as the driving wheel and the second gear 422 is used as the driven wheel. The first gear shaft 4211 is connected to the output shaft of the motor. Under the drive of the motor, the first gear 421 rotates and drives the second gear 422 to move synchronously. The first gear 421 and the second gear 422 can be circular or fan-shaped. Due to the small size of the mounting frame 5 as a whole, multiple components such as the gear assembly 42 and the connecting rod assembly 41 need to be installed on its side wall 51. For this reason, in this embodiment, the first gear 421 and the second gear 422 are preferably fan-shaped, which can meet the transmission requirements and facilitate the arrangement of the connecting rod assembly 41.

[0024] refer to Figures 3 to 5 The connecting rod assembly 41 includes a first connecting rod 411 and a second connecting rod 412 disposed on the left side of the side wall 51, and a third connecting rod 413 and a fourth connecting rod 414 disposed on the right side. The upper ends of the first connecting rod 411, the second connecting rod 412, the third connecting rod 413, and the fourth connecting rod 414 are all rotatably connected to the mounting bracket 5, and the lower ends of the first connecting rod 411 and the second connecting rod 412 are rotatably connected to the second fume hood 22; the lower ends of the third connecting rod 413 and the fourth connecting rod 414 are rotatably connected to the first fume hood 21. The first connecting rod 411 and the second connecting rod 412 are disposed on the left side of the side wall 51 to drive the movement of the second fume hood 22, and the first connecting rod 411 and the second connecting rod 412 remain parallel to each other. The third connecting rod 413 and the fourth connecting rod 414 are disposed on the right side of the side wall 51 to drive the movement of the first fume hood 21, and the third connecting rod 413 and the fourth connecting rod 414 remain parallel to each other.

[0025] refer to Figure 4 and Figure 5The connecting rod assembly 41 also includes a fifth connecting rod 415 and a sixth connecting rod 416. The upper ends of the fifth connecting rod 415 and the second connecting rod 412 are fixed to the first gear shaft 4211, the upper ends of the sixth connecting rod 416 and the third connecting rod 413 are fixed to the second gear shaft 4221, and the lower ends of the fifth connecting rod 415 and the sixth connecting rod 416 are both rotatably connected to the mounting frame 5. Among them, during the rotation of the first gear 421, since the first gear shaft 4211 is fixed to the upper ends of the fifth link 415 and the second link 412, the fifth link 415 and the second link 412 maintain synchronous rotation, and drive the second smoke hood 22 connected below to perform translational movement in the left and right directions; similarly, during the rotation of the second gear 422, since the second gear shaft 4221 is fixed to the upper ends of the sixth link 416 and the third link 413, the sixth link 416 and the third link 413 will rotate synchronously, and drive the first smoke hood 21 connected below to perform translational movement in the left and right directions, and the fifth link 415 and the sixth link 416 make the transmission process more stable.

[0026] refer to Figure 1 The first smoke hood 21 and the second smoke hood 22 are spaced apart, and a connecting portion 3 is provided between the first smoke hood 21 and the second smoke hood 22. The first smoke hood 21 and the second smoke hood 22 can be arranged in an overlapping manner or spaced apart. When the overlapping arrangement is selected, the space between the first smoke hood 21 and the second smoke hood 22 extending in relative directions is relatively limited, and the smoke collecting area at this time is relatively small. In this embodiment, it is preferred to space the first smoke hood 21 and the second smoke hood 22 apart, so that the first smoke hood 21 and the second smoke hood 22 can move relative to the connecting portion 3 in the left and right directions, thereby increasing the smoke collecting area. The mounting bracket 5 is provided inside the fan frame 1, and an installation cavity is formed between the side wall 51 of the mounting bracket 5 and the inner wall of the fan frame 1. The gear assembly 42 and the connecting rod assembly 41 are provided in the installation cavity, and the range hood is more neat and beautiful when viewed from the outside.

[0027] The working process of the range hood is as follows: Figure 4 As shown, when the range hood is in the off state, the first gear 421 rotates in the first direction R1 under the drive of the motor, and the second gear 422 rotates in the second direction R2. The meshing surfaces of the two gears gradually move downward, and the first connecting rod 411 and the second connecting rod 412 rotate along the first direction R1 along with the first gear 421, and the third connecting rod 413 and the fourth connecting rod 414 rotate along the second direction R2 along with the second gear 422, and drive the first fume hood 21 to move left and the second fume hood 22 to move right to the first position, so that the range hood is retracted inward as a whole; as shown in FIG. Figure 5As shown, when the range hood is in working state, the first gear 421 rotates along the second direction R2, the second gear 422 rotates along the first direction R1, the meshing surfaces of the two gears gradually move upward, the first connecting rod 411 and the second connecting rod 412 rotate along the second direction R2 with the first gear 421, the third connecting rod 413 and the fourth connecting rod 414 rotate along the first direction R1 with the second gear 422, and drive the first fume hood 21 to move right and the second fume hood 22 to move left to the second position, so that the range hood is extended outward as a whole.

[0028] In the case where a cabinet is installed, the range hood can automatically match the left and right dimensions of the cabinet after installation by adjusting the positions of the first fume hood 21 and the second fume hood 22 in the left and right directions, thereby improving the matching performance with the user's cabinet and also improving the fume extraction effect.

[0029] In the case where no cabinet is set up, when the range hood is turned off, the first smoke collection hood 21 and the second smoke collection hood 22 can be adjusted to move inward, so as to achieve the smallest possible size of the range hood; in the working state, the range hood can be adjusted to move the first smoke collection hood 21 and the second smoke collection hood 22 outward, so as to expand the smoke collection area as much as possible and improve the oil fume extraction effect.

Claims

1. A range hood comprising a fan frame (1) and a fume collecting hood (2) arranged at the bottom of the fan frame (1), characterized in that: The smoke collecting hood (2) comprises a first smoke collecting hood (21) arranged on the left side of the fan frame (1) and a second smoke collecting hood (22) arranged on the right side of the fan frame (1); a mounting frame (5) is further provided on the fan frame (1); a driving mechanism (4) is provided on the side wall (51) of the mounting frame (5) for driving the first smoke collecting hood (21) and the second smoke collecting hood (22) to move relative to each other in the left and right directions.

2. The range hood according to claim 1, characterized in that: The driving mechanism (4) comprises a driving source, a connecting rod assembly (41) and a gear assembly (42). Driven by the driving source, the first smoke collecting hood (21) and the second smoke collecting hood (22) are driven to move relative to each other in the left and right directions through the transmission of the connecting rod assembly (41) and the gear assembly (42).

3. The range hood according to claim 2, characterized in that: The gear assembly (42) comprises a first gear (421) and a second gear (422) meshing with each other, a first gear shaft (4211) being provided at the center of the first gear (421), a second gear shaft (4221) being provided at the center of the second gear (422), and both the first gear shaft (4211) and the second gear shaft (4221) being rotatably connected to the mounting frame (5).

4. The range hood according to claim 3, characterized in that: The first gear (421) and the second gear (422) are both fan-shaped.

5. The range hood according to claim 3, characterized in that: The connecting rod assembly (41) includes a first connecting rod (411) and a second connecting rod (412) arranged on one side of the side wall (51), and a third connecting rod (413) and a fourth connecting rod (414) arranged on the other side, wherein the first ends of the first connecting rod (411), the second connecting rod (412), the third connecting rod (413) and the fourth connecting rod (414) are rotatably connected to the mounting bracket (5), and the second ends of the first connecting rod (411) and the second connecting rod (412) are rotatably connected to the second smoke hood (22); and the second ends of the third connecting rod (413) and the fourth connecting rod (414) are rotatably connected to the first smoke hood (21).

6. The range hood according to claim 5, characterized in that: The connecting rod assembly (41) also includes a fifth connecting rod (415) and a sixth connecting rod (416), wherein the first ends of the fifth connecting rod (415) and the second connecting rod (412) are fixed to the first gear shaft (4211), the first ends of the sixth connecting rod (416) and the third connecting rod (413) are fixed to the second gear shaft (4221), and the second ends of the fifth connecting rod (415) and the sixth connecting rod (416) are both rotatably connected to the mounting frame (5).

7. The range hood according to claim 6, characterized in that: The driving source is a motor, and the output shaft of the motor is connected to the first gear shaft (4211) and / or the second gear shaft (4221).

8. The range hood according to any one of claims 2 to 7, characterized in that: The mounting frame (5) is arranged inside the fan frame (1); a mounting cavity is formed between a side wall (51) of the mounting frame (5) and an inner wall of the fan frame (1); and the gear assembly (42) and the connecting rod assembly (41) are arranged in the mounting cavity.

9. The range hood according to claim 1, characterized in that: The first smoke collecting hood (21) and the second smoke collecting hood (22) are arranged at intervals, and a connecting portion (3) is provided between the first smoke collecting hood (21) and the second smoke collecting hood (22).

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