Range hood

Abstract

The utility model relates to a range hood, which comprises an exhaust fume collecting hood, a range hood cover and a range hood cover, the main smoke barrier is arranged at the smoke inlet of the smoke collecting hood in a front-back overturning manner and can rotate forwards to an opening position for opening the smoke inlet or rotate backwards to a closing position for shielding the smoke inlet under the driving of a driving mechanism, and a gap is formed between the upper edge of the main smoke barrier and the smoke collecting hood when the main smoke barrier is in the opening position; the range hood further comprises a baffle, the baffle and the main smoke barrier are restrained together, the baffle can be driven by the main smoke barrier to move, when the main smoke barrier is located at the closed position, the baffle is located in the smoke collecting hood, and when the main smoke barrier is located at the open position, the baffle is located in the smoke collecting hood. And at least part of the baffle plate forwards penetrates through the smoke inlet, is transversely blocked below the gap and is positioned above the lower edge of the smoke inlet. The range hood can improve the smoke gathering effect and prevent oil smoke from escaping.

Description

Technical Field

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

[0002] In order to prevent oil smoke from escaping, the range hoods currently on the market are generally provided with a movable smoke baffle, such as the Chinese invention patent application "Smoke baffle drive system, smoke baffle drive method, range hood, storage medium" with application number 202310804283.4 and application publication number CN116734301A. The smoke baffle drive system is connected to the smoke baffle and includes a motor; a transmission mechanism is connected between the motor and the smoke baffle, and can convert the rotational motion of the motor into a swinging motion of driving the smoke baffle; a hydraulic system is connected to the transmission mechanism, and is used to provide resistance to the transmission mechanism to adjust the driving speed of the smoke baffle.

[0003] Another example is the Chinese utility model patent "Ranger Hood" with patent number 202322365018.9 and authorization announcement number CN220541189U, which includes: a casing, on which a first air inlet is provided; a smoke baffle, which is connected to the casing in a manner of rotation and / or translation relative to the casing, and can open and close the first air inlet; an air inlet cavity, which is arranged inside and outside the casing, and is connected to the casing in a manner of being able to move up and down relative to the casing, and a second air inlet is provided on the air inlet cavity; it also includes a motion mechanism, which has a first power output end connected to the smoke baffle and a second power output end connected to the air inlet cavity; driven by the motion mechanism, the smoke baffle can slide back and forth along the front side wall of the casing, and at the same time deflect up and down along the axis extending left and right to open and close the first air inlet, and the air inlet cavity can move up and down relative to the casing to open and close the second air inlet.

[0004] In order to ensure the opening angle of the smoke shield, there is a certain gap between the smoke shield and the smoke hood after the smoke shield is opened. When the user uses the range hood, the oil smoke evaporates upward and escapes along the gap. In order to solve this phenomenon, the escaped oil smoke is usually absorbed by increasing the air volume and wind pressure, but this solution will bring certain problems, such as noise and energy consumption. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a range hood which can improve the smoke collection effect in view of the current status of the prior art, so as to prevent the smoke from escaping.

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

[0007] A smoke collecting hood, the front side wall of which is provided with a smoke inlet;

[0008] A main smoke baffle is arranged at the smoke inlet of the smoke collecting hood in a manner that it can be flipped forward and backward, and can be rotated forward to an open position for opening the smoke inlet or rotated backward to a closed position for shielding the smoke inlet under the drive of the driving mechanism, and in the open position, a gap is formed between the upper edge of the main smoke baffle and the smoke collecting hood;

[0009] It is characterized by also including:

[0010] The baffle is constrained together with the main smoke baffle and can move under the drive of the main smoke baffle. When the main smoke baffle is in a closed position, the baffle is located in the smoke collecting hood. When the main smoke baffle is in an open position, at least a portion of the baffle passes forward through the smoke inlet and horizontally blocks the bottom of the gap and is located above the lower edge of the smoke inlet.

[0011] In this way, when the main smoke baffle is opened under the drive of the driving mechanism, it can drive the baffle to move so that at least a part of the baffle is horizontally blocked below the gap to prevent the oil smoke from passing through the gap upward and escaping. Moreover, since the baffle is located above the lower edge of the smoke inlet, it does not affect the smoke intake into the smoke inlet.

[0012] When the main smoke baffle is closed, the baffle is retracted in the smoke collecting hood, that is, the arrangement of the baffle in the utility model does not affect the operation of the main smoke baffle.

[0013] Preferably, when the main smoke baffle is in the open position, the front side of the baffle is horizontally blocked below the gap through the smoke inlet, the rear side of the baffle is horizontally placed in the smoke hood, and a through opening is provided on the main smoke baffle at a position avoiding the front side to allow oil smoke to pass through.

[0014] In this way, the oil smoke can flow upward into the smoke collecting hood through the through-hole on the smoke baffle plate.

[0015] Furthermore, when the main smoke baffle is in the open position, the front edge of the baffle is adjacent to or in contact with the back side of the main smoke baffle facing the smoke inlet, and the rear edge (32) of the baffle is adjacent to or in contact with the rear wall of the smoke hood.

[0016] Preferably, when the main smoke baffle is in the open position, the main smoke baffle is tilted downward from back to front, and the baffle is tilted downward from front to back, thereby reducing the resistance to the oil smoke airflow and ensuring that the oil smoke airflow can smoothly enter the smoke hood.

[0017] Furthermore, when the main smoke baffle is in the open position, the inclination angle α of the baffle relative to the horizontal plane is ≥12°.

[0018] When the size of the through-port is large, excessive oil smoke enters the upper space of the smoke hood, which will cause this part of the oil smoke to be unable to be effectively discharged, affecting the oil fume extraction effect. On the contrary, when the size of the through-port is small, only a small amount of oil smoke can enter the upper space of the smoke hood through the through-port, affecting the oil fume extraction efficiency. Therefore, in order to further improve the oil fume extraction effect, preferably, the distance between the upper edge of the front side wall of the smoke hood and the rear side wall of the smoke hood is L, and the width of the through-port in the front-to-back direction is Q, and both satisfy: Q≤L / sinγ, γ≤90°-α.

[0019] Preferably, the front side wall of the smoke collecting hood is inclined backward from top to bottom.

[0020] Preferably, the front side of the baffle is rotatably connected to the back side of the main smoke baffle, and the rotation axis is adjacent to or coincides with the front edge of the baffle; the rear side of the baffle is constrained in the smoke hood in a manner that it can move up and down, so that the main smoke baffle can drive the baffle to move when it rotates forward and backward. In the utility model, the angle of the baffle can be controlled by controlling the opening angle of the main smoke baffle, so that the opening angle can be controlled according to the amount of oil smoke, thereby improving the air intake shape and increasing the air intake amount.

[0021] Preferably, sliders are provided on the left and right side edges of the baffle, and sliding grooves extending up and down are provided on the corresponding left and right side walls of the smoke collecting hood, and the sliders are inserted into the corresponding sliding grooves in a manner of being movable along the corresponding sliding grooves.

[0022] Preferably, the through opening extends left and right, and a filter screen is selectively arranged in the through opening. The above-mentioned "selective" means that a filter screen may or may not be arranged in the through opening.

[0023] Preferably, an oil net is also included, which is horizontally placed in the fume hood and above the baffle. The oil net can evenly distribute the oil fume airflow and filter the oil fume.

[0024] At the same time, the combination of the through-hole of the filter screen and the oil net in the utility model is conducive to the upward passage of oil smoke, reduces the resistance to the oil smoke, and can also filter the oil smoke.

[0025] Preferably, the oil net is inclined downward from front to back.

[0026] In the above schemes, in order to further improve the smoke collection effect, preferably, two side smoke baffles are further included, the two side smoke baffles are opposite to each other and are arranged on both sides of the smoke inlet, one on the left and one on the right. When the main smoke baffle is in the open position, the two side smoke baffles are located in front of the smoke hood and behind the main smoke baffle, and form a smoke collection cavity with the main smoke baffle and the baffle opening downward; when the main smoke baffle is in the closed position, the two side smoke baffles are retracted into the smoke hood. In this way, the cooperation between the side smoke baffles, the baffle and the main smoke baffle can further improve the smoke collection effect and prevent oil smoke from escaping.

[0027] Preferably, the two side smoke baffles are connected to the main smoke baffle and can rotate together with the main smoke baffle.

[0028] In the above schemes, preferably, a smoke sensor is provided at the bottom of the main smoke shield, and a controller for receiving a signal from the smoke sensor is further provided, and the output end of the controller is electrically connected to the driving mechanism, so that the opening and closing of the main smoke shield and the opening and closing angle can be controlled according to the amount of oil smoke.

[0029] Compared with the prior art, the advantages of the utility model are: when the main smoke baffle is opened under the drive of the driving mechanism, it can drive the baffle to move so that at least a part of the baffle is horizontally blocked below the gap to prevent the oil smoke from passing through the gap upward and escaping, and because the baffle is located above the lower edge of the smoke inlet, it does not affect the smoke intake into the smoke inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model (the main smoke baffle is in the open position);

[0031] Figure 2 It is a partial structural schematic diagram of another viewing angle of the embodiment of the utility model (the main smoke baffle is in the open position);

[0032] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0033] Figure 4 This is a partial structural cross-sectional view of an embodiment of the utility model (the main smoke baffle is in the open position);

[0034] Figure 5 This is a schematic diagram of the structure of an embodiment of the utility model (the main smoke baffle is in a closed position);

[0035] Figure 6 It is a partial structural sectional view of an embodiment of the utility model (the main smoke baffle is in the closed position). DETAILED DESCRIPTION

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0037] like Figures 1 to 6 As shown, a preferred embodiment of a range hood of the utility model is shown, and the range hood includes a smoke collecting hood 1, a main smoke baffle 2, a baffle 3, a side smoke baffle 4, an oil net 5 and a fan cover 6.

[0038] The side of the range hood facing the user is the front side, the front side wall 11 of the smoke hood 1 is tilted backward from top to bottom and is provided with a smoke inlet 110, the rear side wall 12 of the smoke hood 1 extends vertically, and the distance between the upper edge of the front side wall 11 of the smoke hood 1 and the rear side wall 12 of the smoke hood 1 is L. A smoke outlet is provided at the top of the smoke hood 1.

[0039] The fan cover 6 is a prior art, which is arranged above the smoke hood, and the air inlet at the bottom of the fan cover 6 is opposite to and connected to the smoke outlet at the top of the smoke hood 1, and the top of the fan cover 6 has an air outlet. At the same time, a fan system is arranged in the fan cover 6, which is used to drive the oil smoke airflow to be sucked into the smoke hood 1 through the smoke inlet 110 and discharged through the air outlet. The fan system and the installation structure between the fan system and the fan cover 6 are prior art, and will not be described in detail here.

[0040] The main smoke baffle 2 is arranged at the smoke inlet 110 of the smoke hood 1 so as to be rotatable around its upper edge extending left and right or around an axis adjacent to and parallel to the upper edge, and can be rotated forward to an open position to open the smoke inlet 110 or rotated backward to a closed position to block the smoke inlet 110 under the drive of the driving mechanism. When the main smoke baffle 2 is in the open position, the main smoke baffle 2 is tilted downward from back to front, and a gap 200 is formed between the upper edge of the main smoke baffle 2 and the smoke hood 1. For details, please refer to Figure 1 , 3 At the same time, the driving mechanism (such as a motor) and the transmission connection structure between its output end and the main smoke shield 2 (such as a connecting rod mechanism, for details, please refer to the Chinese invention patent application "Smoke shield driving system, smoke shield driving method, range hood, storage medium" with application number 202310804283.4 and application publication number CN116734301A) in this embodiment are the same as the prior art, so that the driving mechanism directly drives the main smoke shield 2 to rotate forward and backward.

[0041] There are two side smoke baffles 4, the plate surfaces of which are opposite to each other and are arranged on both sides of the smoke inlet 110, one on the left and one on the right, and the two side smoke baffles 4 are connected to the main smoke baffle 2 and can rotate with the main smoke baffle 2. When the main smoke baffle 2 is in the open position, the two side smoke baffles 4 are located in front of the smoke hood 1 and behind the main smoke baffle 2; when the main smoke baffle 2 is in the closed position, the two side smoke baffles 4 are retracted into the smoke hood 1.

[0042] The baffle plate 3 is bound together with the main smoke baffle plate 2 and can move under the drive of the main smoke baffle plate 2. Figure 5 , 6 As shown, when the main smoke baffle 2 is in the closed position, the baffle 3 is located in the smoke collecting hood 1 and is tilted downward from front to back and is substantially parallel to the main smoke baffle 2; Figures 1 to 4 As shown, when the main smoke baffle 2 is in the open position, the baffle 3 is arranged through the smoke inlet 110 and tilted downward from front to back. Figure 4 As shown, the inclination angle α of the baffle 3 relative to the horizontal plane is ≥12° (such as 12, 20, 30°, etc.), at this time, the inclination angle α of the baffle 3 relative to the horizontal plane is smaller than the inclination angle of the baffle 3 in the closed position, and the upper plate surface of the baffle 3 is spaced opposite to the upper edge of the smoke inlet 110, and the lower plate surface of the baffle 3 is spaced opposite to the lower edge of the smoke inlet 110, and the front side edge 31 of the baffle 3 is adjacent to or attached to the back side of the main smoke baffle 2 facing the smoke inlet 110 so that the front side of the baffle 3 is horizontally blocked below the gap 200, and the rear side edge 32 of the baffle 3 is adjacent to or attached to the rear side wall 12 of the smoke hood 1. At this time, the front side of the baffle 3 and the two side smoke baffles 4 and the main smoke baffle 2 form a smoke collecting chamber with an opening facing downward, which is beneficial to improve the smoke gathering effect on the oil smoke airflow and prevent the oil smoke from passing upward through the gap 200. In addition, a through hole 30 penetrating the wall thickness of the baffle 3 is provided at a position avoiding the front side thereof, so that the oil smoke flow passes through the through hole 30 and enters the upper space of the smoke hood 1. In this embodiment, the through hole 30 extends left and right, and a filter is selectively provided in the through hole 30. The width dimension of the through hole 30 in the front-to-back direction is Q, and both satisfy: Q≤L / sinγ, γ≤90°-α. For details, please refer to Figure 4 .

[0043] In this embodiment, in order to enable the rotation of the main smoke baffle 2 to drive the baffle 3 to move, as shown in FIG. Figure 3 As shown, the front side of the baffle 3 is rotatably connected to the back side of the main smoke baffle 2, and the rotation axis 300 is adjacent to or coincides with the front side edge 31 of the baffle 3; Figure 2 , 4 As shown in Figures 6 and 7, sliders 33 are provided on the left and right side edges of the rear side portion of the baffle 3, and slide grooves 13 extending up and down are provided on the corresponding left and right side walls of the smoke hood 1. The sliders 33 are inserted into the slide grooves 13 in a manner that they can move along the corresponding slide grooves 13, so that the baffle 3 can be driven to move when the main smoke baffle 2 rotates forward and backward, and the inclination angle of the baffle 3 relative to the horizontal plane can be adjusted by adjusting the opening angle of the main smoke baffle 2.

[0044] The oil net 5 is horizontally placed in the fume hood 1 and above the baffle 3. The oil net 5 is tilted downward from front to back.

[0045] The range hood of this embodiment further includes a smoke sensor disposed at the lower part of the main smoke baffle 2, and a controller for receiving signals from the smoke sensor, wherein the output end of the controller is electrically connected to the driving mechanism, so that the opening and the opening angle of the main smoke baffle 2 can be controlled according to the amount of oil smoke, thereby controlling the tilt angle of the baffle 3.

[0046] And when the oil fume extraction is working and the main smoke baffle 2 is opened, the smoke collecting chamber enclosed by the front side of the baffle 3 and the two side smoke baffles 4 and the main smoke baffle 2 is a closed negative pressure chamber, which ensures that the oil fume airflow evaporates upward and enters the smoke collecting hood 1 and the space above the baffle 3 from the through-hole 30 on the baffle 3, thereby ensuring the oil fume extraction effect of the range hood and ensuring that the oil fume airflow will not escape from the main smoke baffle 2, effectively solving the problem of oil fume escape.

[0047] 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.

[0048] The term "vertical" is also used in the specification and claims of the present utility model, which means basically along the up and down direction, and is not limited to the vertical direction only, and can also be slightly inclined relative to the vertical direction.

Claims

1. A range hood, comprising: A smoke collecting hood (1), wherein a front side wall (11) is provided with a smoke inlet (110); A main smoke baffle (2) is arranged at the smoke inlet (110) of the smoke collecting hood (1) in a manner that it can be flipped forward and backward, and can be rotated forward to an open position for opening the smoke inlet (110) or rotated backward to a closed position for shielding the smoke inlet (110) under the drive of a driving mechanism, and when in the open position, a gap (200) is formed between the upper edge of the main smoke baffle (2) and the smoke collecting hood (1); Features Also included are: The baffle (3) is restrained together with the main smoke baffle (2) and can move under the drive of the main smoke baffle (2); when the main smoke baffle (2) is in a closed position, the baffle (3) is located in the smoke collecting hood (1); when the main smoke baffle (2) is in an open position, at least a portion of the baffle (3) passes through the smoke inlet (110) forward and horizontally blocks the bottom of the gap (200) and is located above the lower edge of the smoke inlet (110).

2. The range hood according to claim 1, characterized in that: When the main smoke baffle (2) is in the open position, the front side of the baffle (3) is horizontally blocked below the gap (200) through the smoke inlet (110), the rear side of the baffle (3) is horizontally placed in the smoke hood, and a through opening (30) is provided on the main smoke baffle (2) at a position avoiding the front side to allow oil smoke to pass through.

3. The range hood according to claim 2, characterized in that: When the main smoke baffle (2) is in the open position, the front edge (31) of the baffle (3) is adjacent to or in contact with the back side of the main smoke baffle (2) facing the smoke inlet (110), and the rear edge (32) of the baffle (3) is adjacent to or in contact with the rear wall (12) of the smoke hood (1).

4. The range hood according to claim 2, characterized in that: When the main smoke baffle (2) is in the open position, the main smoke baffle (2) tilts downward from the back to the front, and the baffle (3) tilts downward from the front to the back.

5. The range hood according to claim 4, characterized in that: When the main smoke baffle (2) is in the open position, the inclination angle α of the baffle (3) relative to the horizontal plane is ≥12°.

6. The range hood according to claim 5, characterized in that: The distance between the upper edge of the front side wall (11) of the smoke hood (1) and the rear side wall (12) of the smoke hood (1) is L, and the width of the through opening (30) in the front-to-back direction is Q. Both satisfy: Q≤L / sinγ, γ≤90°-α.

7. The range hood according to claim 6, characterized in that: The front side wall (11) of the smoke collecting hood (1) is inclined backward from top to bottom.

8. The range hood according to claim 2, characterized in that: The front side of the baffle (3) is rotatably connected to the back side of the main smoke baffle (2), and the rotation axis (300) is adjacent to or coincides with the front edge (31) of the baffle (3); the rear side of the baffle (3) is constrained in the smoke hood (1) in a manner that allows it to move up and down, so that the main smoke baffle (2) can drive the baffle (3) to move when it rotates forward and backward.

9. The range hood according to claim 8, characterized in that: Slide blocks (33) are provided on the left and right side edges of the baffle (3), and slide grooves (13) extending up and down are provided on the corresponding left and right side walls of the smoke collecting hood (1), and the slide blocks (33) are inserted into the corresponding slide grooves (13) in a manner that they can move along the corresponding slide grooves (13).

10. The range hood according to claim 2, characterized in that: The through opening (30) extends left and right, and a filter screen is selectively provided in the through opening (30).

11. The range hood according to claim 10, characterized in that: It also includes an oil net (5) which is horizontally placed inside the smoke collecting hood (1) and above the baffle (3).

12. The range hood according to claim 11, characterized in that: The oil net (5) is inclined downward from front to back.

13. The range hood according to any one of claims 1 to 12, characterized in that: It also includes two side smoke baffles (4), the two side smoke baffles (4) are opposite to each other and are arranged on the left and right sides of the smoke inlet (110); when the main smoke baffle (2) is in the open position, the two side smoke baffles (4) are located at the front side of the smoke collecting hood (1) and the rear side of the main smoke baffle (2), and form a smoke collecting cavity with the main smoke baffle (2) and the baffle (3) with the main smoke baffle (2); When the main smoke baffle (2) is in a closed position, the two side smoke baffles (4) are folded into the smoke collecting hood (1).

14. The range hood according to claim 13, characterized in that: The two side smoke shields (4) are both connected to the main smoke shield (2) and can rotate together with the main smoke shield (2).

15. The range hood according to any one of claims 1 to 12, characterized in that: It also includes a smoke sensor arranged at the lower part of the main smoke baffle (2) and a controller for receiving a signal sent by the smoke sensor, wherein the output end of the controller is electrically connected to the driving mechanism.

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