Ceiling type range hood

Abstract

The utility model relates to a ceiling type range hood which comprises an exhaust fume collecting hood, the bottom of the exhaust fume collecting hood is provided with a concave exhaust fume collecting cavity, and the top of the exhaust fume collecting cavity is provided with an air inlet; the smoke baffle is rotationally arranged on the front side of the bottom of the smoke collecting hood; the smoke baffle at least has a first state and a second state along with the change of the rotating position of the smoke baffle: in the first state, the smoke baffle opens the air inlet, and a part of the smoke baffle forwards extends out of the orthographic projection of the smoke collecting hood in the vertical direction; and in the second state, the smoke baffle shields the air inlet and is connected with the area, located on the periphery of the air inlet, of the side wall of the top of the smoke collecting cavity. The smoke barrier has the advantages that the smoke barrier can be well hidden in the folded state, and then the attractiveness in the shutdown state is improved.

Description

Technical Field

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

[0002] Most of the top suction range hoods have the following structure: a smoke collecting hood is arranged on the top, the smoke collecting hood is concave to form a smoke collecting cavity, an air inlet is arranged on the smoke collecting hood, and a filter is arranged at the air inlet. For example, a range hood disclosed in the Chinese utility model patent application with application number 200520086100.7 includes a smoke collecting hood arranged at the bottom and an air duct designed at the top of the smoke collecting hood, an air inlet ring connected to the bottom of the air duct is arranged in the middle of the smoke collecting hood, a fan is arranged in the air duct, an oil filter is arranged at the bottom of the air inlet ring, and an oil cup is arranged at the bottom of the oil filter. In this type of range hood, oil smoke enters the fan through the oil filter, and the oil filtering effect at the front end of the range hood of this type is poor, and smoke leaks around.

[0003] In order to improve the oil fume extraction effect, some range hoods with smoke baffles have been disclosed, which suppress the oil fume. For example, a range hood disclosed in the Chinese utility model patent application number 201320021818.2 includes a smoke outlet, a smoke baffle and a pair of rotating mechanisms. The two ends of the smoke baffle are rotatably mounted on the front side of the smoke outlet through the rotating mechanism. By changing the angle between the smoke baffle and the smoke outlet, the smoke extraction effect of the range hood can be changed. Another example is the Chinese utility model patent application "A Range Hood with Smoke Screen" with application number 201520764207.6, which also made similar disclosures.

[0004] However, the range hood of the above patent application still has certain shortcomings. When the range hood is not in use, the above smoke shield is rotated inward to the closed state, which basically makes the smoke shield parallel to the bottom of the range hood and hidden. In this state, the smoke shield usually blocks part of the bottom opening of the smoke collecting chamber. Since the top-suction range hood is hung at a relatively high height, users can easily observe that the smoke shield is very abrupt relative to the smoke hood, affecting the aesthetics. On the other hand, the smoke shield is horizontally folded at the bottom of the smoke hood, which will also block the lighting set at the bottom of the smoke hood, affecting the lighting effect when the range hood is turned off.

[0005] Therefore, existing range hoods need further improvement. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide a top-suction range hood in view of the current status of the prior art, in which a smoke baffle can be better hidden in a folded state, thereby improving the aesthetics of the range hood in a turned-off state.

[0007] The second technical problem to be solved by the utility model is to provide a top-suction range hood in which the opening and closing of the smoke baffle will not affect the lighting effect of the lighting lamp in view of the current status of the prior art.

[0008] The technical solution adopted by the utility model to solve the first technical problem is: a top suction range hood, comprising a smoke collecting hood, the bottom of which is provided with a concave smoke collecting cavity, and the top of the smoke collecting cavity is provided with an air inlet;

[0009] A smoke baffle, rotatably disposed on the bottom front side of the smoke collecting hood;

[0010] The smoke baffle has at least a first state and a second state as its rotational position changes:

[0011] In the first state, the smoke baffle opens the air inlet and partially extends forward beyond the vertical projection of the smoke collecting hood;

[0012] In the second state, the smoke baffle shields the air inlet and is connected to the top side wall of the smoke collecting chamber at an area outside the air inlet.

[0013] In order to further ensure the aesthetics, the top side wall of the smoke collecting chamber has an annular concave area recessed toward the inside of the smoke collecting hood at the edge of the outer periphery of the air inlet, and the outer peripheral edge of the smoke baffle in the second state is stored in the annular concave area. When the smoke baffle is retracted into the smoke collecting chamber, it is in the same plane as the interior of the chamber, with a simple and elegant appearance and easier to clean.

[0014] In order to improve the air intake effect and facilitate oil conduction, the top side wall of the smoke collecting chamber is tilted downward from front to back, and the smoke baffle in the second state is also tilted downward from front to back. The structural design of the top side wall of the smoke collecting chamber tilting downward from front to back also makes the air inlet correspond to the position of the smoke source of the stove, thereby improving the oil smoke absorption effect.

[0015] The technical solution adopted by the utility model to solve the second technical problem is: a lighting lamp is also provided on the top side wall of the smoke collecting chamber in the front area of ​​the air inlet, the smoke shield has a first side edge adjacent to its rotation center and a second side edge away from its rotation center, the smoke shield in the first state is inclined forward and downward from the first side edge to the second side edge, and the first side edge of the smoke shield is located in front of the lighting lamp, and the first side edge of the smoke shield in the second state is located behind the lighting lamp.

[0016] In the non-working state, the smoke damper is closed, the lighting lamp is located in front of the smoke damper, is not blocked, and can illuminate the table top. In the working state, after the smoke damper is opened, the lighting lamp is located behind the smoke damper, is not blocked, and can still illuminate the table top.

[0017] Considering that the smoke baffle has limited forward and backward movement, the lighting lamp should not be designed to be too large in the forward and backward directions. In order to improve the lighting effect in the left and right directions, the lighting lamp is in the shape of a long strip and extends in the left and right directions.

[0018] In order to provide a diversion effect, the air inlet is opened in the left and right directions, and the smoke hood is also provided with a left guide plate and a right guide plate arranged at intervals on the left and right. The left guide plate corresponds to the left area of ​​the air inlet, and the right guide plate corresponds to the right area of ​​the air inlet. Part of the left guide plate is inclined upward from left to right, and part of the right guide plate is inclined upward from right to left.

[0019] Generally, the smoke baffle can be opened or closed manually by a user, or opened or closed automatically by an electric drive mechanism, and preferably, it also includes a motion mechanism for driving the smoke baffle to rotate relative to the smoke collecting hood.

[0020] In order to simplify the structure of the motion mechanism, the motion mechanism includes a drive motor, a drive rod, a connecting rod and two rocking arms. The two rocking arms are arranged at intervals in the left and right directions and can rotate around axes extending left and right. The smoke baffle is connected to the two rocking arms. The power output shaft of the drive motor is connected to the first end of the drive rod and drives the drive rod to rotate around its first end. The second end of the drive rod is rotationally connected to the first end of the connecting rod, and the second end of the connecting rod is rotationally connected to one of the rocking arms.

[0021] As an improvement, it also includes a fan frame arranged above the smoke hood, and the drive motor is installed on the left wall or the right wall of the fan frame. The motion component is installed on the left and right inner walls of the fan frame, that is, as far away from the left and right side areas of the smoke hood as possible and close to the middle position, so that the two side frames can be extremely narrow, and the left and right side areas of the air inlet are increased, thereby increasing the air intake.

[0022] As an improvement, the back of the smoke shield is provided with smoke shield brackets arranged at intervals on the left and right, and the two rockers are respectively connected to the two smoke shield brackets. Preferably, the force-bearing position of the smoke shield bracket of the smoke shield can be located at the third part of the left and right direction of the smoke shield, so that the overall force of the smoke shield is more uniform, and it is not easy to cause the problem of excessive gap on one side when the smoke shield is closed.

[0023] Compared with the prior art, the advantages of the utility model are as follows: when the smoke baffle of the top-suction range hood is in the closed storage state, it is not just horizontally hidden at the bottom of the smoke hood as in the prior art, but blocks the air inlet and is connected to the area of ​​the top side wall of the smoke collecting chamber located outside the air inlet. As a result, the top wall of the smoke hood at the bottom of the smoke hood is basically a complete wall structure, the smoke baffle does not appear abrupt, and the aesthetics of the entire range hood in the off state is improved, which improves the user experience. On the other hand, in the preferred embodiment, in the non-working state, the smoke baffle is closed, the lighting lamp is located in the front side of the smoke baffle, is not blocked, and can illuminate the table top. Similarly, in the working state, when the smoke baffle is opened, the lighting lamp is located inside the smoke baffle and is not blocked, and can still illuminate the table top. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the oil fume extractor according to an embodiment of the utility model;

[0025] Figure 2 A bottom view of the range hood according to an embodiment of the utility model;

[0026] Figure 3 A vertical cross-sectional view of the range hood according to an embodiment of the utility model cut along the front-to-back direction (the smoke baffle is in an open state);

[0027] Figure 4 A vertical sectional perspective view of the range hood according to an embodiment of the utility model cut along the front-to-back direction (the smoke baffle is in an open state, and the centrifugal fan is omitted);

[0028] Figure 5 This is a cross-sectional view of the range hood according to the embodiment of the utility model cut along the left and right directions (the smoke baffle is in an open state);

[0029] Figure 6 This is a cross-sectional view of the range hood according to the embodiment of the utility model cut along the front-to-back direction (the smoke baffle is in a closed state);

[0030] Figure 7 It is a three-dimensional structural schematic diagram of the motion mechanism of the range hood according to an embodiment of the utility model. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] 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.

[0033] Figure 1-Figure 7 A preferred embodiment of the range hood of the utility model is shown. The top suction range hood includes a housing and a centrifugal fan 13 arranged in the housing. The housing generally includes a fan frame 10 and a fume hood 2 arranged at the bottom of the fan frame 10. The inner cavity of the fan frame 10 is connected to the inner cavity of the fume hood 2. The bottom of the fume hood 2 has a concave fume collecting chamber 20. An air inlet 200 is provided on the top side wall of the fume collecting chamber 20. External fume can enter the fume hood 2 through the air inlet 200. The centrifugal fan 13 is arranged in the fan frame 10. When the centrifugal fan 13 is running, negative pressure is generated. External oil smoke can be sucked into the fume hood 2 through the air inlet 200. An oil net 25 is also provided at the air inlet 200 of the fume hood 2 for filtering oil smoke. An oil cup 26 is provided at the rear side of the bottom of the fume hood 2. The oil cup 26 is in the shape of a long strip extending left and right, and is used to receive the oil stains flowing down from the fume hood 2. The left and right dimensions of the fan frame 10 generally meet the left and right dimensions of the smoke hood 2, so that the left and right side parts of the smoke hood 2 will protrude outward relative to the fan frame 10 to form two left and right shoulders. The air inlet 200 on the top side wall of the smoke collecting chamber 20 of this embodiment is opened in the left and right directions. Since the left and right dimensions of the fan frame 10 are smaller than the left and right dimensions of the smoke hood 2, in order to improve the air intake effect, the smoke hood 2 is also provided with a left guide plate 23 and a right guide plate 24 arranged at intervals on the left and right, wherein the left guide plate 23 corresponds to the left area of ​​the air inlet 200, and the right guide plate 24 corresponds to the right area of ​​the air inlet 200, and a part of the left guide plate 23 is tilted upward from left to right, and a part of the right guide plate 24 is tilted upward from right to left.

[0034] See also Figure 3 The top side wall of the smoke collecting chamber 20 is inclined downward from front to back, that is, the depth (the dimension in the vertical direction) of the smoke collecting chamber 20 is gradually reduced from front to back. The plane where the air inlet 200 on the smoke collecting chamber 20 is located is also inclined downward from front to back, so that the air inlet 200 corresponds to the position where the smoke source of the stove is located, thereby improving the effect of absorbing oil smoke.

[0035] See also Figure 7The front side of the bottom of the smoke hood 2 of this embodiment is also provided with a smoke baffle 3 that can be deflected forward and backward relative to the smoke hood 2. The smoke baffle 3 is rotatably connected to the main body of the smoke hood 2 through a motion mechanism. The motion mechanism includes a drive motor 41, a drive rod 42, a connecting rod 43 and two rocking arms 44. A vertically extending connecting frame 14 is provided on the left and right side walls 12 of the fan frame 10. The two rocking arms 44 are both U-shaped, and the first end thereof is fixedly connected to the smoke plate bracket 33 on the back of the smoke baffle 3, and the other end is rotatably connected to the bottom of the connecting frame 14 through a pin extending left and right. A fixed frame 40 is also provided on the left side wall 11 of the fan frame 10. The drive motor 41 is installed on the fixed frame 40. The power output shaft of the drive motor 41 is connected to the first end of the drive rod 42 and drives the drive rod 42 to rotate around its first end. The second end of the drive rod 42 is rotatably connected to the first end of the connecting rod 43, and the second end of the connecting rod 43 is rotatably connected to one of the rocking arms 44. Among them, the rotation axis of the driving rod 42 rotating around its first end, the rotation axis of the relative rotation between the driving rod 42 and the connecting rod 43, and the rotation axis of the relative rotation between the connecting rod 43 and the rocker 44 all extend in the left-right direction. When the driving motor 41 rotates forward and reverse, the power can be transmitted to the rocker 44 through the driving rod 42 and the connecting rod 43, thereby driving the smoke baffle 3 to deflect forward and backward. The above-mentioned motion mechanism is installed on the left and right inner walls of the fan frame 10, that is, as far away from the left and right side areas of the smoke hood 2 as possible and close to the middle position, so that the two side frames can be extremely narrow, and the left and right side areas of the air inlet 200 are increased, thereby increasing the air intake.

[0036] The force-bearing positions of the two smoke plate brackets 33 on the back of the smoke baffle 3 are located at three equal parts in the left and right directions of the smoke baffle 3, so that the overall force of the smoke baffle 3 is more uniform, and it is not easy to cause the problem of excessive gap on one side when the smoke baffle 3 is closed. The smoke baffle 3 has at least a first state and a second state driven by the motion mechanism: in the first state, the smoke baffle 3 opens the air inlet 200, and partially extends forward outside the vertical projection of the smoke hood 2, such as Figure 3 As shown, the smoke baffle 3 is tilted upward from the front to the back; in the second state, the smoke baffle 3 blocks the air inlet 200 and is connected to the area of ​​the top side wall of the smoke collecting chamber 20 located outside the air inlet 200. The top side wall of the smoke collecting chamber 20 has an annular concave area 21 recessed toward the inside of the smoke collecting hood 2 at the edge located outside the air inlet 200, and the outer edge of the smoke baffle 3 in the second state is received in the annular concave area 21. When the smoke baffle 3 is retracted into the smoke collecting chamber 20, the lower wall surface of the smoke baffle 3 and the edge of the outer periphery of the air inlet 200 can be basically flush, that is, the smoke baffle 3 and the inside of the cavity are in the same plane, the appearance is simple and elegant, and it is easier to clean.

[0037] A lighting lamp 22 is also provided on the top side wall of the smoke collecting chamber 20 in the front area of ​​the air inlet 200. Considering that the front-to-back movement of the smoke baffle 3 is limited during movement, the lighting lamp 22 should not be designed to be too large in the front-to-back direction. In order to facilitate the improvement of the lighting effect in the left-right direction, the lighting lamp 22 of this embodiment is in the shape of a long strip and extends in the left-right direction. The smoke baffle 3 has a first side 31 adjacent to its rotation center and a second side 32 away from its rotation center. The smoke baffle 3 in the first state is inclined forward and downward from its first side 31 to the second side 32, and the first side 31 of the smoke baffle 3 is located in front of the lighting lamp 22. This state is the working state of the range hood. After the smoke baffle 3 is opened, the lighting lamp 22 is located at the rear side of the smoke baffle 3 and will not be blocked, so it can illuminate the table. Similarly, the first side edge 31 of the smoke shield 3 in the second state is located behind the illuminating lamp 22. This state is the non-operating state of the range hood. The smoke shield 3 is closed at the air inlet 200, and the illuminating lamp 22 is located in front of the smoke shield 3 and will not be blocked, and can still illuminate the table.

[0038] The smoke baffle 3 of the top-suction range hood of this embodiment, when in the closed storage state, is not just horizontally hidden at the bottom of the smoke hood 2 as in the prior art, but blocks the air inlet 200 and is connected to the top side wall of the smoke collecting chamber 20 at the area outside the air inlet 200. As a result, the top wall of the smoke hood 2 at the bottom of the smoke hood 2 is basically a complete wall structure, and the smoke baffle 3 does not appear abrupt, which improves the aesthetics of the range hood when it is turned off and improves the user experience. On the other hand, in the preferred embodiment, in the non-working state, the smoke baffle 3 is closed, and the lighting lamp 22 is located at the front side of the smoke baffle 3 and is not blocked, and can illuminate the table top. Similarly, in the working state, after the smoke baffle 3 is opened, the lighting lamp 22 is located inside the smoke baffle 3 and is not blocked, and can still illuminate the table top.

Claims

1. A top suction range hood, comprising: A smoke collecting hood (2) having a concave smoke collecting cavity (20) at its bottom, and an air inlet (200) at the top of the smoke collecting cavity (20); A smoke baffle (3) is rotatably disposed on the bottom front side of the smoke collecting hood (2); The feature is that the smoke baffle (3) has at least a first state and a second state as its rotation position changes: In a first state, the smoke baffle (3) opens the air inlet (200) and partially extends forward beyond the vertical projection of the smoke collecting hood (2); In the second state, the smoke shield (3) blocks the air inlet (200) and is connected to the top side wall of the smoke collecting chamber (20) in an area outside the air inlet (200).

2. The top suction range hood according to claim 1, characterized in that: The top side wall of the smoke collecting chamber (20) is provided with an annular recessed area (21) recessed toward the inside of the smoke collecting hood (2) at the edge of the outer periphery of the air inlet (200), and the outer peripheral edge of the smoke baffle (3) in the second state is received in the annular recessed area (21).

3. The top suction range hood according to claim 2, characterized in that: The top side wall of the smoke collecting chamber (20) is inclined downward from front to back, and the smoke baffle (3) in the second state is also inclined downward from front to back.

4. The top suction range hood according to claim 1, characterized in that: A lighting lamp (22) is also provided on the top side wall of the smoke collecting chamber (20) in the front area of ​​the air inlet (200); the smoke baffle (3) has a first side edge (31) adjacent to its rotation center and a second side edge (32) away from its rotation center; the smoke baffle (3) in a first state is inclined forward and downward from its first side edge (31) to the second side edge (32), and the first side edge (31) of the smoke baffle (3) is located behind the lighting lamp (22); the first side edge (31) of the smoke baffle (3) in a second state is located in front of the lighting lamp (22).

5. The top suction range hood according to claim 4, characterized in that: The lighting lamp (22) is in the shape of a long strip and is arranged extending in the left-right direction.

6. The top suction range hood according to claim 1, characterized in that: The air inlet (200) is opened in the left-right direction, and the smoke hood (2) is also provided with a left guide plate (23) and a right guide plate (24) arranged at intervals on the left and right. The left guide plate (23) corresponds to the left area of ​​the air inlet (200), and the right guide plate (24) corresponds to the right area of ​​the air inlet (200). Part of the left guide plate (23) is tilted upward from left to right, and part of the right guide plate (24) is tilted upward from right to left.

7. The top suction range hood according to any one of claims 1 to 6, characterized in that: It also includes a motion mechanism for driving the smoke baffle plate (3) to rotate relative to the smoke collecting hood (2).

8. The top suction range hood according to claim 7, characterized in that: The motion mechanism comprises a driving motor (41), a driving rod (42), a connecting rod (43) and two rocking arms (44); the two rocking arms (44) are arranged at intervals in the left-right direction and can rotate around axes extending left-right; the smoke baffle (3) is connected to the two rocking arms (44); the power output shaft of the driving motor (41) is connected to the first end of the driving rod (42) and drives the driving rod (42) to rotate around its first end; the second end of the driving rod (42) is rotationally connected to the first end of the connecting rod (43); and the second end of the connecting rod (43) is rotationally connected to one of the rocking arms (44).

9. The top suction range hood according to claim 8, characterized in that: It also includes a fan frame (10) arranged above the smoke collecting hood (2), and the drive motor (41) is installed on the left side wall (11) or the right side wall (12) of the fan frame (10).

10. The top suction range hood according to claim 8, characterized in that: The back side of the smoke baffle plate (3) is provided with smoke plate brackets (33) arranged at intervals on the left and right sides, and the two rockers (44) are respectively connected to the two smoke plate brackets (33).

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