Range hood

Abstract

The utility model relates to a range hood, which comprises: a box body, the interior of which is hollow to form a chamber with a smoke inlet and a smoke outlet; recording the length direction of the box body as the X-axis direction, the width direction as the Y-axis direction and the height direction as the Z-axis direction, and establishing a coordinate system; the fan system is arranged in the cavity and is used for driving oil smoke airflow to be sucked into the cavity from the smoke inlet and discharged from the smoke outlet; the flywheel can rotate around a first rotating shaft in the center of the flywheel under the driving of the driving mechanism; the spherical shell is arranged on the periphery of the flywheel and the driving mechanism in a surrounding mode, the two ends of the first rotating shaft are supported on the spherical shell in the radial direction so that the first rotating shaft can rotate around the axis of the first rotating shaft, and the flywheel and the driving mechanism are located in the center of the shell; meanwhile, the shell is rotationally connected to the center of the bottom of the box body through a second rotating shaft extending in the radial direction, and the extending direction of the second rotating shaft and the extending direction of the first rotating shaft correspond to two of the X-axis direction, the Y-axis direction and the Z-axis direction. The stability of the whole structure can be improved.

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] Existing range hoods rely on the operation of the internal fan system to form a negative pressure area, and the oil smoke airflow passes through the range hood under the action of atmospheric pressure and is discharged outdoors. For example, the structures disclosed in the Chinese invention patent "A side-suction range hood" with application number 201910354853.8 and authorization announcement number CN110043936B, and the Chinese utility model patent "A range hood" with application number 202120936892.1 and authorization announcement number CN215570687U.

[0003] During the use of the range hood, the shaking and vibration generated by the fan system may be transmitted to the entire machine through hard contact, causing the entire machine to shake and vibrate, making the overall structure unstable and affecting the user experience. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a range hood in view of the current status of the prior art so as to improve the stability of the overall structure.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a range hood, comprising:

[0006] The box body is hollow inside to form a chamber with a smoke inlet and a smoke outlet; and the length direction of the box body is recorded as the X-axis direction, the width direction is the Y-axis direction, and the height direction is the Z-axis direction, and a coordinate system is established;

[0007] A fan system is arranged in the chamber and is used to drive the oil smoke flow to be sucked into the chamber from the smoke inlet and discharged from the smoke outlet;

[0008] It is characterized by also including:

[0009] A flywheel, which can rotate around a first rotating shaft at its center under the drive of a driving mechanism;

[0010] A spherical shell is arranged around the periphery of the flywheel and the driving mechanism, and the two ends of the first rotating shaft are radially supported thereon, so that the first rotating shaft can rotate around its own axis, and the flywheel and the driving mechanism are located at the center of the shell; at the same time, the shell is rotatably connected to the bottom center of the box body through a radially extending second rotating shaft, and the extension directions of the second rotating shaft and the first rotating shaft correspond to two of the XYZ axis directions.

[0011] In this way, through the cooperation between the flywheel, the shell and the box body, when the entire range hood vibrates or shakes, the rotation of the flywheel itself is not affected, thereby ensuring a certain moment of inertia, that is, inertia. The inertia of the rotating flywheel can offset the vibration and shaking of the range hood box, thereby keeping the overall structure of the range hood stable.

[0012] Furthermore, it also includes a rotating ring, which is located on the periphery of the flywheel and is rotatably connected to the shell through a radially extending third rotating shaft. The extending directions of the third rotating shaft, the second rotating shaft and the first rotating shaft respectively correspond to the XYZ axis directions.

[0013] In this way, the inertia of the rotating flywheel can offset the vibration and shaking of the range hood housing in any direction in the XYZ axis direction.

[0014] In order to improve the structural stability, further, the rotating ring, the flywheel and the housing are arranged concentrically.

[0015] Preferably, the second rotation axis extends along the X-axis direction, the first rotation axis extends along the Z-axis direction, and the third rotation axis extends along the Y-axis direction.

[0016] Preferably, the shell is formed by butting two hemispheres together, and the end of the third rotating shaft is supported at the butt joint.

[0017] In the utility model, a vacuum cavity can be formed inside the shell, and the vacuum ring mirror can effectively protect the flywheel and the driving mechanism under the oil circuit ring mirror inside the range hood, and can also ensure that the flywheel operates efficiently under lower air resistance, thereby improving efficiency and reducing energy consumption.

[0018] Preferably, the driving mechanism is a motor, which is symmetrically arranged with the spherical center of the shell as the center, and the stator of the motor is arranged at the center of the first rotating shaft, and the rotor of the motor acts on the flywheel.

[0019] In the above solutions, preferably, a housing is further included, which is located in the box body and covers the outer periphery of the shell. The box body can prevent the influence of oil pollution on the flywheel and the shell.

[0020] Preferably, the top wall of the shell is arched upwards and is high in the middle and low around, so as to prevent oil stains from accumulating on the top wall of the shell.

[0021] Furthermore, the top wall of the shell has two inclined surfaces arranged in an inverted V shape, and a ridge formed by the intersection of upper edges of the two inclined surfaces is located in the center of the top wall of the shell.

[0022] Furthermore, the inclination angle of each inclined surface relative to the horizontal plane is ≥45°.

[0023] Compared with the prior art, the advantage of the utility model is that: through the cooperation between the flywheel, the shell and the box body, when the whole range hood vibrates or shakes, the rotation of the flywheel itself is not affected, thereby ensuring a certain moment of inertia, that is, inertia, and the vibration and shaking of the range hood box body are offset by the inertia of the rotating flywheel, so that the overall structure of the range hood remains stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0025] Figure 2 It is a cross-sectional view of an embodiment of the utility model (the cross section is a horizontal plane);

[0026] Figure 3 Another cross-sectional view of an embodiment of the utility model (the cross-section is a horizontal plane);

[0027] Figure 4 It is a cross-sectional view of an embodiment of the utility model (the cross-section is a vertical plane extending front and back);

[0028] Figure 5 It is a cross-sectional view of an embodiment of the utility model (the cross-section is a vertical plane extending left and right). DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] like Figures 1 to 5 As shown, a preferred embodiment of a range hood of the utility model is shown, and the range hood comprises a box body 1, a fan system, a flywheel 2, a driving mechanism 3, a shell 4, a rotating ring 5 and a casing.

[0031] The interior of the box body 1 is hollow to form a chamber 10 with a smoke inlet 1a and a smoke outlet; and the length direction of the box body 1 is recorded as the X-axis direction, the width direction is the Y-axis direction, and the height direction is the Z-axis direction to establish a coordinate system.

[0032] The fan system is disposed in the chamber 10, and is used to drive the oil smoke flow to be sucked into the chamber 10 through the smoke inlet 1a and discharged through the smoke outlet. In this embodiment, the fan system is an existing centrifugal fan.

[0033] The housing 6 is disposed at the center of the bottom of the chamber 10, and the top wall of the housing 6 is arched upward and is high in the middle and low around. Specifically, the top wall of the housing 6 has two inclined surfaces 61 arranged in an inverted V shape, and a ridge 610 formed by the intersection of the upper edges of the two inclined surfaces 61 is located at the center of the top wall of the housing 6. The inclination angle of each inclined surface 61 relative to the horizontal plane is ≥45°.

[0034] The housing 4 is spherical and is formed by connecting two hemispheres 40. The housing 4 is rotatably connected to the outer shell 6 via a second rotating shaft 41 extending radially. The second rotating shaft 41 extends along the X-axis direction.

[0035] The rotating ring 5 is located in the housing 4, the center of the rotating ring 5 is located at the spherical center of the housing 4, and the rotating ring 5 is rotatably connected to the joint of the two hemispheres 40 through a radially extending third rotating shaft 51. The third rotating shaft 51 extends along the Y-axis direction.

[0036] The flywheel 2 is located inside the housing 4 and the inner periphery of the rotating ring 5, and the center of the flywheel 2 is located at the spherical center of the housing 4. The mass of the flywheel is evenly distributed around the circumference, ensuring that the rotational inertia of the circumference is equal so that it will not rotate and cause eccentricity.

[0037] The flywheel 2 can rotate around the first rotating shaft 21 in the center thereof under the drive of the driving mechanism 3. The first rotating shaft 21 extends in the Z-axis direction, and the two ends of the first rotating shaft 21 are radially supported at the joints of the two hemispheres 40, so that the first rotating shaft 21 can rotate around its own axis. In this embodiment, the driving mechanism 3 is a motor, which is symmetrically arranged with the spherical center of the housing 4 as the center, and the stator of the motor is arranged at the center of the first rotating shaft 21, and the rotor of the motor acts on the flywheel 2, so that the motor can be constrained in the center of the housing 4 and can drive the flywheel 2 to rotate.

[0038] At the same time, since the motor is supported in the shell 4 through the first rotating shaft 21, the shell 4 is supported in the outer shell 6 through the second rotating shaft 41, and the outer shell 6 is installed in the box body 1, the wires connected to the motor can be electrically connected to the power supply and the controller through the first rotating shaft 21, the shell 4, and the second rotating shaft 41, thereby controlling the operation of the motor.

[0039] In this way, through the first, second and third rotating shafts in three directions, the range hood can move in multiple directions relative to the flywheel axis, but the rotation of the flywheel itself is not affected, thereby ensuring a certain moment of inertia. The inertia of the rotating flywheel can offset the vibration and shaking of the range hood housing, thereby keeping the range hood stable.

[0040] The principle of generating moment of inertia:

[0041] Spatial rigidity of rotating objects: If a flywheel rotates at a certain angular velocity and there is no other force acting on it, its angular momentum will remain unchanged and it will continue to rotate around the same axis in the same direction. Therefore, if the flywheel is installed on a multi-axis rotatable suspension, the direction of the flywheel will remain unchanged regardless of how the suspension moves relative to the rotating flywheel. Therefore, the flywheel has a certain moment of inertia, i.e., inertia.

[0042] In this embodiment, the outer shell 6, the housing 4, the rotating ring 5, the flywheel 2 and the motor located at the bottom of the chamber 10 have a certain weight, which can appropriately lower the center of gravity of the whole machine, thereby improving the stability of the whole machine.

[0043] 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.

Claims

1. A range hood, comprising: The box body (1) is hollow inside to form a chamber (10) with a smoke inlet (1a) and a smoke outlet; and the length direction of the box body (1) is recorded as the X-axis direction, the width direction is the Y-axis direction, and the height direction is the Z-axis direction, and a coordinate system is established; A fan system is disposed in the chamber (10) and is used to drive the oil smoke flow to be sucked into the chamber (10) through the smoke inlet (1a) and discharged through the smoke outlet; Features Also included are: A flywheel (2) which can rotate around a first rotating shaft (21) at its center under the drive of a driving mechanism (3); A spherical shell (4) is arranged around the periphery of the flywheel (2) and the driving mechanism (3), and the two ends of the first rotating shaft (21) are radially supported thereon, so that the first rotating shaft (21) can rotate around its own axis, and the flywheel (2) and the driving mechanism (3) are located at the center of the shell (4); at the same time, the shell (4) is rotatably connected to the bottom center of the box body (1) through a radially extending second rotating shaft (41), and the extension directions of the second rotating shaft (41) and the first rotating shaft (21) correspond to two of the XYZ axis directions.

2. The range hood according to claim 1, characterized in that: It also includes a rotating ring (5), which is located on the periphery of the flywheel (2) and is rotatably connected to the housing (4) via a radially extending third rotating shaft (51), and the extension directions of the third rotating shaft (51), the second rotating shaft (41) and the first rotating shaft (21) respectively correspond to the XYZ axis directions.

3. The range hood according to claim 2, characterized in that: The rotating ring (5), the flywheel (2) and the housing (4) are arranged concentrically.

4. The range hood according to claim 2, characterized in that: The second rotating shaft (41) extends along the X-axis direction, the first rotating shaft (21) extends along the Z-axis direction, and the third rotating shaft (51) extends along the Y-axis direction.

5. The range hood according to claim 2, characterized in that: The housing (4) is formed by butting two hemispherical bodies (40), and the end of the third rotating shaft (51) is supported at the butt joint.

6. The range hood according to claim 1, characterized in that: The driving mechanism (3) is a motor, which is symmetrically arranged with the center of the shell (4) as the center, and the stator of the motor is arranged at the center of the first rotating shaft (21), and the rotor of the motor acts on the flywheel (2).

7. The range hood according to any one of claims 1 to 6, characterized in that: It also includes an outer shell (6) which is located inside the box body (1) and covers the outer periphery of the shell body (4).

8. The range hood according to claim 7, characterized in that: The top wall of the housing (6) is arched upwards and is high in the middle and low around.

9. The range hood according to claim 8, characterized in that: The top wall of the shell (6) has two inclined surfaces (61) arranged in an inverted V shape, and a ridge (610) formed by the intersection of the upper edges of the two inclined surfaces (61) is located in the center of the top wall of the shell (6).

10. The range hood according to claim 9, characterized in that: The inclination angle of each inclined surface (61) relative to the horizontal plane is ≥45°.

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