Range hood

Abstract

A range hood comprises: a housing, the interior of the housing is hollow to form a chamber with a smoke inlet and a smoke outlet, the housing is provided with a rear side surface facing a wall surface to be installed, and the bottom wall of the housing is provided with an oil leakage hole; the oil cup is arranged below the bottom wall of the machine shell and provided with an oil receiving cavity with an opening in the top so as to receive oil dirt output from the oil leakage hole in the machine shell, and the oil cup is provided with a back face used for facing the wall face to be installed. The oil cup is arranged in a mode of rotating around a first axis extending left and right, and has the following two states: an inclined state that a top opening of the oil cup inclines forwards and is still opposite to the oil leakage hole, and the back surface of the oil cup inclines backwards from top to bottom and protrudes relative to the rear side surface of the machine shell; therefore, the lower edge of the back surface of the oil cup can be adjacent to or contacted with a to-be-mounted wall surface; in the initial state that the top opening of the oil cup faces upwards and is opposite to the oil leakage hole, the back face of the oil cup vertically extends and is folded relative to the rear side face of the machine shell. The range hood can prevent oil smoke from entering a gap between the rear side face of the range hood and a to-be-installed wall face.

Description

Technical Field

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

[0002] Existing range hoods rely on the operation of the internal fan system to form a negative pressure zone. The oil smoke airflow in the kitchen passes through the range hood under the action of atmospheric pressure and is discharged outdoors. In order to prevent oil smoke from escaping, a movable smoke baffle is generally provided at the smoke inlet of the range hood. For example, 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 has a smoke baffle drive system connected to the smoke baffle, including a motor; a transmission mechanism connected between the motor and the smoke baffle, capable of converting the rotation of the motor into a swinging motion to drive the smoke baffle; a hydraulic system connected to the transmission mechanism, used to provide resistance to the transmission mechanism to adjust the driving speed of the smoke baffle.

[0003] The design of the smoke shield can effectively intercept the rising oil smoke and reduce the risk of oil smoke escaping. However, at the same time, the existing oil cup is mostly installed at the bottom of the range hood. The movement of the smoke shield is a rotation process. There is a risk of collision with the oil cup during the opening and closing of the smoke shield. Therefore, a certain gap is left between the oil cup and the smoke shield during the design to avoid interference between the two. However, after the range hood has been used for a period of time, oil stains will condense on the surface of the smoke shield. The existence of the gap prevents the oil stains on the smoke shield from flowing into the oil cup and drips onto the stove, affecting the user experience.

[0004] At the same time, when the range hood is installed on a cabinet or a wall to be installed, there is usually a gap between the rear side of the range hood casing and the wall to be installed. When the range hood is working, some of the oil smoke will enter the gap and cause oil on the wall to be installed. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to provide a range hood in view of the current status of the prior art, so as to prevent oil smoke from entering the gap between the rear side of the range hood and the wall to be installed.

[0006] The second technical problem to be solved by the present invention is to provide a range hood so that the oil cup can receive oil while avoiding interference with the rotation of the smoke baffle.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a range hood, comprising:

[0008] A casing, the interior of which is hollow to form a chamber with a smoke inlet and a smoke outlet, and the casing has a rear side surface facing the wall to be installed, and the bottom wall of the casing is provided with an oil leakage hole;

[0009] A fan system is arranged in the housing and is used to drive the oil smoke flow into the chamber from the smoke inlet and discharged from the smoke outlet;

[0010] An oil cup is arranged below the bottom wall of the casing and has an oil receiving cavity with a top opening to receive the oil discharged from the oil leakage hole in the casing, and the oil cup has a back side facing the wall to be installed;

[0011] Features:

[0012] The oil cup is arranged in a manner that it can rotate around a first axis extending left and right, and has the following two states:

[0013] The top opening of the oil cup is tilted forward and still tilted relative to the oil leakage hole, and the back of the oil cup is tilted backward from top to bottom and protrudes relative to the rear side of the housing, so that the lower edge of the back of the oil cup can be adjacent to or in contact with the wall to be installed;

[0014] In an initial state, the top opening of the oil cup faces upward and is opposite to the oil leakage hole, and the back side of the oil cup extends vertically and is folded relative to the rear side of the housing.

[0015] When the range hood is turned on to absorb oil smoke, the oil cup can be rotated to a tilted state. At this time, the oil in the casing can be collected into the oil cup through the oil leakage hole. At the same time, the back of the oil cup tilts backward from top to bottom and protrudes relative to the rear side of the casing, so that the lower edge of the back of the oil cup can be close to or in contact with the wall to be installed, thereby playing a role in shielding the oil smoke from rising and preventing the oil smoke from entering the gap between the rear side of the range hood and the wall to be installed. When the range hood is stopped, the oil cup can be rotated to the initial state to better preserve the collected oil.

[0016] Preferably, the first axis is located above the oil cup, corresponding to the center of the oil cup in the front-to-rear direction.

[0017] Preferably, a driving mechanism is further included, which acts on the oil cup and is used to drive the oil cup to rotate to a tilted state or an initial state.

[0018] In order to better collect the oil into the oil cup, further, the front side wall of the housing is tilted backward from top to bottom and is provided with the above-mentioned smoke inlet;

[0019] It also includes a smoke baffle, which is arranged at the smoke inlet in a manner that it can be flipped forward and backward around a second axis extending left and right to open and close the smoke inlet, and the second axis is adjacent to the upper edge of the smoke baffle and away from the lower edge of the smoke baffle; and when the smoke inlet is in a closed state, the smoke baffle tilts backward from top to bottom, and the lower edge of the smoke baffle extends to the top of the top opening of the oil cup in the initial state and is opposite to the top opening of the oil cup. In this way, when the smoke inlet is in a closed state, a part of the oil can flow downward through the plate surface of the smoke baffle and gather in the oil cup.

[0020] The positional relationship between the smoke baffle and the oil cup may cause the oil cup to interfere with the rotation of the smoke baffle. For example, when the smoke baffle is opened, the lower edge of the smoke baffle will hit the oil cup. Therefore, in order to further solve the second technical problem mentioned above, preferably, the driving mechanism acts on the smoke baffle at the same time, and when the smoke baffle opens the smoke inlet, the oil cup is in an inclined state; when the smoke baffle closes the smoke inlet, the oil cup is in an initial state. The oil cup in an inclined state can avoid the rotation track of the lower edge of the smoke baffle, preventing the oil smoke from interfering with the rotation of the smoke baffle. The oil cup in the initial state can better collect and preserve the oil stains flowing down from the surface of the smoke baffle.

[0021] Furthermore, the smoke baffle and the oil cup move synchronously under the action of the driving mechanism. Of course, the two can also move successively, such as before the smoke baffle is opened, the oil cup first rotates to a tilted state; after the smoke baffle is closed, the oil cup rotates to an initial state.

[0022] Furthermore, the driving mechanism comprises:

[0023] An electric push rod, the rear end of which is rotatably connected in the housing, and the rotation axis extends left and right, and the front end of which is a power output end;

[0024] A hinge part connects the smoke shield and the power output end of the electric push rod to convert the front and rear extension force of the power output end into a force for flipping the smoke shield forward and backward;

[0025] A transmission rod, the front end of which is rotatably connected to the power output end of the electric push rod, and the rotation axis extends left and right;

[0026] A push rod, the upper end of which is rotatably connected to the rear end of the transmission rod, and the rotation axis extends left and right, and the lower end of which is provided with a driving gear, and the central axis of the driving gear extends left and right;

[0027] A mounting seat for mounting an oil cup is provided at the bottom of the housing, and a driven gear meshing with the driving gear is provided on the mounting seat, and the central axis of the driven gear is the first axis.

[0028] Preferably, the mounting seat has a slot, the oil cup is provided with an insert that can be inserted into the slot from front to back, and the mounting seat is provided with a stopper for limiting the insert from moving forward and leaving the slot, so as to facilitate the disassembly and assembly of the oil cup and ensure that the oil cup is stably mounted on the mounting seat.

[0029] Furthermore, the limiting member comprises a limiting block, which is constrained above the inserting piece by means of springs extending up and down, and has a tendency to always press downward against the inserting piece under the action of the spring.

[0030] In the above schemes, preferably, the oil cup in the initial state is located on the rotation path of the lower edge of the smoke baffle plate; and the oil cup in the inclined state is located outside the rotation path of the lower edge of the smoke baffle plate.

[0031] Preferably, in the tilted state, the tilt angle of the back of the oil cup relative to the vertical plane is ≤5°. Limiting the tilt angle of the oil cup can prevent the oil in the oil cup from spilling out, while also better shielding the oil from rising and preventing the oil smoke from entering the gap between the rear side of the range hood and the wall to be installed.

[0032] Preferably, the oil cup is in the shape of a long strip extending leftward and rightward as a whole.

[0033] Compared with the prior art, the present invention has the following advantages: when the range hood is turned on to absorb oil smoke, the oil cup can be rotated to a tilted state, at which time, the oil stains in the casing can be collected into the oil cup through the oil leakage hole, and at the same time, the back of the oil cup tilts backward from top to bottom and protrudes relative to the rear side of the casing, so that the lower edge of the back of the oil cup can be adjacent to or in contact with the wall to be installed, thereby playing a role in shielding the oil smoke from rising and preventing the oil smoke from entering the gap between the rear side of the range hood and the wall to be installed. When the range hood is stopped, the oil cup can be rotated to the initial state to better preserve the collected oil stains. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of a range hood according to an embodiment of the present invention (the oil cup is in an initial state, and the smoke baffle closes the smoke inlet);

[0035] Figure 2 for Figure 1 A partial cross-sectional view of a central range hood;

[0036] Figure 3 for Figure 1 A partial exploded view of the central range hood;

[0037] Figure 4 It is a structural schematic diagram of a range hood according to an embodiment of the present invention (the oil cup is in a tilted state, and the smoke inlet is opened to block the smoke);

[0038] Figure 5 for Figure 4 Side view of the mid-range hood;

[0039] Figure 6 for Figure 4 Partial cross-sectional view of a center range hood. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below with reference to the accompanying drawings.

[0041] like Figures 1 to 6 As shown in FIG. 1 , a preferred embodiment of a range hood of the present invention is shown. The range hood comprises a housing 1 , a fan system, an oil cup 2 , a driving mechanism 3 and a smoke baffle 4 .

[0042] The housing 1 is hollow inside and has a chamber 10, and the front side wall of the chamber 10 is tilted backward from top to bottom and is provided with a smoke inlet 10a. The bottom wall of the chamber 10 is provided with an oil leakage hole. The rear side wall of the chamber 10 extends vertically and has a rear side surface 11 for facing the wall to be installed. The top wall of the chamber 10 is provided with a smoke outlet.

[0043] The fan system is an existing centrifugal fan, which is arranged in the casing 1 and is used to drive the oil smoke flow into the chamber 10 through the smoke inlet 10a and discharged from the smoke outlet.

[0044] The above-mentioned smoke baffle 4 is arranged at the smoke inlet 10a in a manner that it can flip forward and backward around a second axis extending left and right to open and close the smoke inlet 10a. The second axis is adjacent to the upper edge of the smoke baffle 4 and away from the lower edge of the smoke baffle 4; and when the smoke inlet 10a is in a closed state, the smoke baffle 4 tilts backward from top to bottom; when the smoke inlet 10a is in an open state, the smoke baffle 4 tilts forward from top to bottom.

[0045] The oil cup 2 is in the shape of a long strip extending left and right. It is arranged below the bottom wall of the housing 1 and has an oil receiving cavity with a top opening 20 to receive the oil discharged from the oil leakage hole in the housing 1. The oil cup 2 has a back surface 21 facing the wall to be installed. At the same time, the oil cup 2 is arranged in a manner that it can rotate around a first axis extending left and right. The first axis is located above the oil cup 2, corresponding to the center of the oil cup 2 in the front-to-back direction. The oil cup 2 has the following two states:

[0046] The top opening 20 of the oil cup 2 is tilted forward and still in an inclined state relative to the oil leakage hole, and the back side 21 of the oil cup 2 is tilted backward from top to bottom and protrudes relative to the rear side 11 of the housing 1, so that the lower edge of the back side 21 of the oil cup 2 can be close to or in contact with the wall to be installed; and in the inclined state, the inclination angle a of the back side 21 of the oil cup 2 relative to the vertical plane is ≤5°, please refer to Figure 5 The oil cup 2 in the inclined state is located outside the rotation path of the lower edge of the smoke baffle 4.

[0047] In the initial state, the top opening 20 of the oil cup 2 faces upward and is opposite to the oil leakage hole. The back side 21 of the oil cup 2 extends vertically and is closed relative to the rear side 11 of the housing 1. At this time, the lower edge of the smoke baffle 4 in the state of closing the smoke inlet 10a extends to the top of the top opening 20 of the oil cup 2 in the initial state and is opposite to the top opening 20 of the oil cup 2. For details, please refer to Figure 2 And the oil cup 2 in the initial state is located on the rotation path of the lower edge of the smoke baffle 4.

[0048] The driving mechanism 3 acts on the oil cup 2 and the smoke baffle 4 at the same time, and is used to drive the smoke baffle 4 and the oil cup 2 to rotate synchronously. When the smoke baffle 4 opens the smoke inlet 10a, the oil cup 2 is in a tilted state; when the smoke baffle 4 closes the smoke inlet 10a, the oil cup 2 is in an initial state. Specifically, the driving mechanism 3 includes an electric push rod 31, a hinge 32, a transmission rod 33 and a push rod 34. The rear end of the electric push rod 31 is rotatably connected in the casing 1, and the rotation axis extends left and right. The front end of the electric push rod 31 is the power output end; the hinge 32 connects the smoke baffle 4 and the power output end of the electric push rod 31 to convert the front and rear telescopic force of the power output end into a force that flips the smoke baffle 4 back and forth; the front end of the transmission rod 33 is rotatably connected to the power output end of the electric push rod 31, and the rotation axis extends left and right; the upper end of the push rod 34 is rotatably connected to the rear end of the transmission rod 33, and the rotation axis extends left and right. The lower end of the push rod 34 is provided with a driving gear 35, and the central axis of the driving gear 35 extends left and right; the bottom of the casing 1 is provided with a mounting seat 12 for mounting the oil cup 2, and the mounting seat 12 is provided with a driven gear 36 meshing with the driving gear 35, and the central axis of the driven gear 36 is the first axis.

[0049] At the same time, if Figure 2 , 3 As shown, the mounting seat 12 of this embodiment has a slot 120, and the oil cup 2 is provided with an inserting piece 22 that can be inserted into the slot 120 from front to back, and a limiting member for limiting the inserting piece 22 from moving forward and leaving the slot 120 is provided in the mounting seat 12. The limiting member includes a limiting block 13, which is constrained above the inserting piece 22 by a spring 14 extending up and down, and always has a tendency to press against the inserting piece 22 downward under the action of the spring 14. This facilitates the disassembly and assembly of the oil cup 2, and can ensure that the oil cup 2 is stably mounted on the mounting seat 12.

[0050] 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.

[0051] The term "vertical" is also used in the specification and claims of the present invention, 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 casing (1) having a hollow interior forming a chamber (10) with a smoke inlet (10a) and a smoke outlet, and the casing (1) having a rear side surface (11) facing the wall to be installed, and an oil leakage hole is provided on the bottom wall of the casing (1); A fan system is disposed in the housing (1) and is used to drive the oil smoke flow into the chamber (10) from the smoke inlet (10a) and to be discharged from the smoke outlet; An oil cup (2) is arranged below the bottom wall of the casing (1) and has an oil receiving cavity with a top opening (20) for receiving oil dirt output from the oil leakage hole in the casing (1), and the oil cup (2) has a back surface (21) facing the wall surface to be installed; Features: The oil cup (2) is arranged in a manner that it can rotate around a first axis extending leftward and rightward, and has the following two states: The top opening (20) of the oil cup (2) is tilted forward and still in an inclined state opposite to the oil leakage hole, and the back side (21) of the oil cup (2) is tilted backward from top to bottom and protrudes relative to the rear side (11) of the housing (1), so that the lower edge of the back side (21) of the oil cup (2) can be adjacent to or in contact with the wall to be installed; In an initial state, the top opening (20) of the oil cup (2) faces upward and is opposite to the oil leakage hole, and the back side (21) of the oil cup (2) extends vertically and is folded relative to the rear side (11) of the housing (1).

2. The range hood according to claim 1, characterized in that: The first axis is located above the oil cup (2), corresponding to the center of the oil cup (2) in the front-rear direction.

3. The range hood according to claim 2, characterized in that: It also includes a driving mechanism (3) which acts on the oil cup (2) and is used to drive the oil cup (2) to rotate to an inclined state or an initial state.

4. The range hood according to claim 3, characterized in that: The front side wall of the housing (1) is inclined backward from top to bottom and is provided with the above-mentioned smoke inlet (10a); It also includes a smoke baffle (4) which is arranged at the smoke inlet (10a) in a manner that it can be flipped forward and backward around a second axis extending left and right to open and close the smoke inlet (10a), the second axis being adjacent to the upper edge of the smoke baffle (4) and away from the lower edge of the smoke baffle (4); and when the smoke inlet (10a) is in a closed state, the smoke baffle (4) tilts backward from top to bottom, and the lower edge of the smoke baffle (4) extends to above the top opening (20) of the oil cup (2) in the initial state and is opposite to the top opening (20) of the oil cup (2).

5. The range hood according to claim 4, characterized in that: The driving mechanism (3) acts on the smoke baffle (4) at the same time, and when the smoke baffle (4) opens the smoke inlet (10a), the oil cup (2) is in a tilted state; when the smoke baffle (4) closes the smoke inlet (10a), the oil cup (2) is in an initial state.

6. The range hood according to claim 5, characterized in that: The smoke baffle (4) and the oil cup (2) move synchronously under the action of the driving mechanism (3).

7. The range hood according to claim 6, characterized in that: The driving mechanism (3) comprises: An electric push rod (31), the rear end of which is rotatably connected to the housing (1), and the rotation axis extends left and right, and the front end of which is a power output end; A hinge member (32) connects the smoke shield (4) and the power output end of the electric push rod (31) to convert the forward and backward telescopic force of the power output end into a force for causing the smoke shield (4) to flip forward and backward; A transmission rod (33), the front end of which is rotatably connected to the power output end of the electric push rod (31), and the rotation axis extends left and right; A push rod (34), the upper end of which is rotatably connected to the rear end of the transmission rod (33) and the rotation axis extends left and right, and a driving gear (35) is provided at the lower end of the push rod (34), and the central axis of the driving gear (35) extends left and right; A mounting seat (12) for mounting the oil cup (2) is provided at the bottom of the housing (1), and a driven gear (36) meshing with the driving gear (35) is provided on the mounting seat (12), and the central axis of the driven gear (36) is the first axis.

8. The range hood according to claim 7, characterized in that: The mounting seat (12) has a slot (120), the oil cup (2) is provided with an insert (22) that can be inserted into the slot (120) from front to back, and a limiting member is provided in the mounting seat (12) for limiting the insert (22) from moving forward and escaping from the slot (120).

9. The range hood according to claim 8, characterized in that: The limiting member comprises a limiting block (13), which is constrained above the inserting piece (22) by means of a spring (14) extending upward and downward, and has a tendency to always press downward against the inserting piece (22) under the action of the spring (14).

10. The range hood according to any one of claims 4 to 9, characterized in that: The oil cup (2) in the initial state is located on the rotation path of the lower edge of the smoke baffle (4); the oil cup (2) in the inclined state is located outside the rotation path of the lower edge of the smoke baffle (4).

11. The range hood according to any one of claims 1 to 9, characterized in that: In the inclined state, the inclination angle of the back side (21) of the oil cup (2) relative to the vertical plane is ≤5°.

12. The range hood according to any one of claims 1 to 9, characterized in that: The oil cup (2) is in the shape of a long strip extending leftwards and rightwards as a whole.

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