A range hood

Abstract

The present invention relates to the technical field of range hoods, and provides a range hood, comprising: an outer shell; a volute, arranged in the outer shell, comprising a wind wheel structure and a power part; a sound-speaking and noise-reducing component, arranged adjacent to the volute, suitable for releasing sound waves for neutralizing noise toward the volute; a cleaning device, arranged adjacent to the sound-speaking and noise-reducing component, suitable for cleaning the sound-speaking and noise-reducing component. By arranging the cleaning device at a position adjacent to the sound-speaking and noise-reducing component, the sound-speaking and noise-reducing component can be effectively cleaned, and the oil stains attached to the active noise reduction device itself or the protective film thereon or other protective structures can be removed, thereby ensuring the sound transmission effect of the active noise reduction device or the protective film structure thereon, and improving the noise reduction ability of the active noise reduction device.

Description

Technical Field

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

[0002] As people's living standards improve, they pay more and more attention to the environmental hygiene in the kitchen. As an appliance for handling kitchen oil pollution, the range hood is widely used in the air cleaning work in the kitchen. However, while absorbing oil smoke, the range hood will also produce a certain degree of noise due to its own structural problems. The current range hood noise reduction is mainly to adjust the dynamic balance between air volume and noise, or to paste sound-absorbing and vibration-reducing materials inside. The noise reduction effect is relatively limited. Using active noise reduction to control the noise of the range hood is currently a more efficient way to improve the noise reduction effect. Active noise reduction mainly uses the speaker to emit sound waves to neutralize the sound wave frequency of the noise.

[0003] However, existing active noise reduction devices for range hoods are mostly used for self-protection using structures such as protective films. However, when such protective structures are used, the adhesion of oil stains will cause the film's sound transmission effect to decrease, the system stability to decrease, and the noise reduction effect of the device to decrease. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the active noise reduction device of the range hood in the prior art will reduce the noise reduction effect due to the adhesion of oil stains, thereby providing a range hood.

[0005] The present invention provides a range hood, comprising: an outer shell; a volute, which is arranged in the outer shell and comprises a wind wheel structure and a power part; a sound-raising and noise-reducing component, which is arranged adjacent to the volute and is suitable for releasing sound waves for neutralizing noise toward the volute; and a cleaning device, which is arranged adjacent to the sound-raising and noise-reducing component and is suitable for cleaning the sound-raising and noise-reducing component.

[0006] The sound-speaking and noise-reducing component comprises: a sound-speaking component, which is arranged on the central axis of the wind wheel structure; a noise collecting component, which is communicatively connected with the sound-speaking component, arranged on the central axis of the wind wheel structure, and is disposed on both sides of the volute together with the sound-speaking component.

[0007] The speaker assembly includes: a first movable part, which is arranged on the outer shell and includes a first rotating shaft and a first supporting plate, and the first rotating shaft is movably connected to the outer shell; a speaker, which is arranged on the first supporting plate and passes through the central axis of the wind wheel structure, and the speaker has a first working position that rotates into the outer shell and faces the wind wheel structure under the action of an external force, and a first cleaning position that rotates to the outside of the outer shell and faces away from the wind wheel structure under the action of an external force.

[0008] The noise collecting component includes: a second movable part, which is arranged on both sides of the outer shell with the first movable part, including a second rotating shaft and a second supporting plate, and the second rotating shaft is movably connected to the outer shell; a sound collecting part, which is communicatively connected with the sound-emitting part, is arranged on the second supporting plate, and passes through the central axis of the wind wheel structure. The sound collecting part has a second working position that can be rotated into the outer shell and facing the wind wheel structure under the action of external force, and a second cleaning position that can be rotated to the outside of the outer shell and facing away from the wind wheel structure under the action of external force.

[0009] The cleaning device comprises: a cover body, which is arranged on the outer side of the shell and is buckled on the first movable part and / or the second movable part; a steam cleaning device, which is arranged on the inner wall of the cover body and is suitable for releasing steam and cleaning the parts to be cleaned in the cover body.

[0010] The cleaning device also includes a drying element arranged inside the cover body, and the drying element is suitable for removing water in the cover body.

[0011] The plurality of steam cleaning devices and the plurality of drying components are evenly spaced and staggered along the inner wall of the cover.

[0012] The first movable member and the second movable member are arranged in the same type, and the openings of the two covers facing the shell are correspondingly buckled and connected to the edges of the first supporting plate and the second supporting plate respectively.

[0013] The cover body is detachably connected to the shell.

[0014] A transparent window is arranged on the cover body.

[0015] The technical solution of the present invention has the following advantages:

[0016] 1. The range hood provided by the present invention comprises: an outer shell; a volute, which is arranged in the outer shell and includes a wind wheel structure and a power part; a sound-raising and noise-reducing component, which is arranged adjacent to the volute and is suitable for releasing sound waves for neutralizing noise toward the volute; and a cleaning device, which is arranged adjacent to the sound-raising and noise-reducing component and is suitable for cleaning the sound-raising and noise-reducing component.

[0017] By arranging a cleaning device at a position adjacent to the loudspeaker noise reduction component, the loudspeaker noise reduction component can be effectively cleaned to remove oil stains attached to the active noise reduction device itself or protective structures such as the protective film thereon, thereby ensuring the sound transmission effect of the active noise reduction device or the protective film structure thereon and improving the noise reduction capability of the active noise reduction device.

[0018] 2. The sound-speaking and noise-reducing component of the range hood provided by the present invention comprises: a sound-speaking component, which is arranged on the central axis of the wind wheel structure; a noise collection component, which is communicatively connected with the sound-speaking component, arranged on the central axis of the wind wheel structure, and is disposed on both sides of the volute together with the sound-speaking component.

[0019] A noise collection component is provided to collect the noise frequency generated by the wind wheel and other components during the internal operation of the range hood, and the sound waves are analyzed by a built-in controller. Finally, a sound wave that can offset the noise is outputted by a speaker component that is communicated with the sound speaker component to reduce the noise, thereby automating the noise reduction process. At the same time, the speaker component and the noise collection component are separately disposed on the central axis of the wind wheel structure on both sides of the volute. Since the wind wheel structure and the power parts are the main noise sources inside the outer casing, this arrangement can improve the sound collection accuracy of the noise collection component and the sound generation accuracy of the speaker component.

[0020] 3. The range hood provided by the present invention, the sound speaker assembly includes: a first movable part, which is arranged on the outer shell, including a first rotating shaft and a first supporting plate, and the first rotating shaft is movably connected to the outer shell; a sound speaker, which is arranged on the first supporting plate and passes through the central axis of the wind wheel structure, and the sound speaker has a first working position that rotates into the outer shell and faces the wind wheel structure under the action of an external force, and a first cleaning position that rotates to the outside of the outer shell and faces away from the wind wheel structure under the action of an external force.

[0021] By providing a carrier plate with a rotating shaft and arranging a speaker on the carrier plate, when the user needs to eliminate noise, the carrier plate with the speaker can be rotated to the inside of the shell and toward the wind wheel structure to achieve sound noise reduction. When it needs to be cleaned, the speaker can be rotated to the outside of the shell by pushing the carrier plate to rotate, which is convenient for the user to clean the speaker. This arrangement effectively improves the convenience of cleaning the speaker component.

[0022] 4. In the range hood provided by the present invention, a plurality of the steam cleaning devices and a plurality of the drying components are evenly spaced and staggered along the inner wall of the hood.

[0023] This arrangement effectively covers the space inside the cover body, making the cleaning and drying of the sound receiving components or the sound emitting components inside the cover body more uniform, thorough and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of a sound-raising and noise-reducing component in a range hood provided in an embodiment of the present invention in a working state;

[0026] Figure 2 for Figure 1 The schematic diagram of the structure of the sound-sounding and noise-reducing component of the range hood shown is in a cleaning state;

[0027] Figure 3 for Figure 1 The structural schematic diagram of the sound-speaker assembly in the range hood shown;

[0028] Figure 4 for Figure 3 A schematic structural diagram of the sound-speaker assembly in the range hood shown in FIG. 1 from another angle;

[0029] Figure 5 for Figure 1 The structural schematic diagram of the cleaning device in the range hood shown;

[0030] Figure 6 for Figure 5 A schematic structural diagram of the cleaning device in the range hood shown in another angle;

[0031] Figure 7 for Figure 1 A schematic diagram of the working process in the range hood shown;

[0032] Description of reference numerals:

[0033] 1. Outer shell; 2. Wind wheel structure; 3. Power part; 4. Speaker assembly; 41. First rotating shaft; 42. First bearing plate; 43. Speaker assembly; 5. Noise collecting assembly; 6. Cover; 7. Steam cleaning device; 8. Drying part. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] like Figure 1 - Figure 7 This embodiment provides a range hood, including: a housing 1, a volute, a sound-sounding and noise-reduction component, and a cleaning device.

[0039] The outer shell 1 is a wind cabinet of the range hood, and a smoke collecting hood is arranged below it. The volute is arranged inside the outer shell 1, including a wind wheel structure 2 and a driving motor as a power part 3 for driving the wind wheel structure 2 to rotate. The central axis of the wind wheel structure 2 is arranged in the horizontal direction; the sound-raising and noise reduction component is arranged adjacent to the volute, and can release sound waves to neutralize noise toward the volute; the cleaning device is arranged adjacent to the sound-raising and noise reduction component, and is used for cleaning the sound-raising and noise reduction component.

[0040] By arranging a cleaning device at a position adjacent to the loudspeaker noise reduction component, the loudspeaker noise reduction component can be effectively cleaned to remove oil stains attached to the active noise reduction device itself or protective structures such as the protective film thereon, thereby ensuring the sound transmission effect of the active noise reduction device or the protective film structure thereon and improving the noise reduction capability of the active noise reduction device.

[0041] The loudspeaker and noise reduction component includes a loudspeaker component 4 and a noise collection component 5. The loudspeaker component 4 is arranged on the central axis of the wind wheel structure 2, and the noise collection component 5 is electrically connected or remotely connected to the loudspeaker component 4, and is also arranged on the central axis of the wind wheel structure 2, and is arranged on both sides of the volute with the loudspeaker component 4. In this embodiment, a controller is also arranged on the noise collection component 5, and the controller is preferably a single-chip microcomputer, and can also be other controllers, such as a small PLC, etc. As a convertible implementation method, the controller can also be independently arranged.

[0042] By setting up a noise collecting component 5, the noise frequency generated by the wind wheel and the like during the internal operation of the range hood is collected, the sound waves are analyzed by a built-in controller, and finally a sound wave that can offset the noise is outputted by the speaker component 4 that is communicated with it to reduce the noise, thereby realizing the automation of the noise reduction process. At the same time, the speaker component 4 and the noise collecting component 5 are separately arranged on the central axis of the wind wheel structure 2 on both sides of the volute. Since the wind wheel structure 2 and the power part 3 are the main noise sources inside the outer casing 1, this arrangement can improve the sound collection accuracy of the noise collecting component 5 and the sound generation accuracy of the speaker component 4.

[0043] The speaker assembly 4 specifically includes a first movable member and a speaker member 43 .

[0044] Two square opening structures are provided at the position where the central axis of the wind wheel structure 2 passes through the outer wall of the casing 1. The first movable part is provided on one side of the opening structure, which includes a first rotating shaft 41 and a first supporting plate 42. The first rotating shaft 41 is movably connected to the edge of the opening structure. In the present embodiment, the first supporting plate 42 is provided in a square plate shape corresponding to the opening structure, and the first rotating shaft 41 is provided in the middle of the first supporting plate 42. A first motor is also provided at the position corresponding to the first rotating shaft 41 on the opening structure. The first motor is electrically connected to the controller, and its drive shaft is connected to the first rotating shaft 41.

[0045] The sound speaker 43 is arranged at the center of the first supporting plate 42 and on the central axis of the wind wheel structure 2. The sound speaker 43 has a first working position in which it rotates into the outer casing 1 under the action of external force or the drive of a motor and faces the wind wheel structure 2, and a first cleaning position in which it rotates to the outside of the outer casing 1 under the action of external force or the drive of a motor and faces away from the wind wheel structure 2.

[0046] By providing a carrier plate with a rotating shaft and providing a speaker 43 on the carrier plate, when the user needs to reduce noise, the carrier plate provided with the speaker 43 can be rotated to the inside of the shell 1 and toward the wind wheel structure 2 to achieve sound noise reduction. When it needs to be cleaned, the speaker 43 can be rotated to the outside of the shell 1 by pushing the carrier plate to rotate, which is convenient for the user to clean the speaker 43. This arrangement effectively improves the convenience of cleaning the speaker assembly 4.

[0047] The noise collecting component 5 includes a second movable part and a sound collecting part. The second movable part and the first movable part are disposed on both sides of the housing 1 and correspond to the opening structure on the other side, including a second rotating shaft and a second bearing plate, the second rotating shaft is movably connected to the edge of the opening structure, in this embodiment, the second bearing plate is arranged in a square plate shape corresponding to the opening structure, the second rotating shaft is arranged in the middle of the second bearing plate, and a second motor is also arranged at a position corresponding to the second rotating shaft on the opening structure, the second motor is electrically connected to the controller, and its drive shaft is connected to the second rotating shaft.

[0048] The sound collecting component is electrically connected to the sound emitting component 43, which is arranged at the center position of the second supporting plate and on the central axis of the wind wheel structure 2. The sound collecting component has a second working position in which it can rotate into the outer casing 1 under the action of external force or the drive of a motor and face the wind wheel structure 2, and a second cleaning position in which it can rotate to the outside of the outer casing 1 under the action of external force or the drive of a motor and face away from the wind wheel structure 2.

[0049] As a convertible embodiment, the sound-speaking member 43 and the sound-receiving member can be fixedly arranged inside the housing 1 and cleaned by a cleaning device arranged inside, or taken out and cleaned through the opening structure.

[0050] The cleaning device comprises a cover body 6 and a steam cleaning device 7 .

[0051] There is no limitation on the specific shape of the cover body 6 as long as it can accommodate various movable parts and provide them with movement space. In the present embodiment, the cover body 6 is preferably in the shape of a square shell tube, which is arranged on the outside of the outer shell 1 and is buckled on the first movable part and the second movable part. As a convertible embodiment, the cover body 6 is buckled on the outside of one of the first movable part and the second movable part.

[0052] The steam cleaning device 7 is arranged on the inner wall of the cover body 6, and can release high-temperature steam to clean the sound collecting part and the sound emitting part 43 in the cover body 6. As a convertible embodiment, the steam cleaning device 7 can also be a high-temperature degreasing device, an electrostatic degreasing device, or a micro-nano bubble degreasing device, etc.

[0053] In addition, the cleaning device further comprises a drying element 8 disposed inside the housing 6. The drying element 8 is specifically a dryer, which can remove water on the sound collecting element and the sound emitting element 43 in the housing 6. As a convertible embodiment, the drying element 8 may not be disposed.

[0054] In this embodiment, a plurality of steam cleaning devices 7 and a plurality of drying elements 8 are evenly spaced and staggered along the inner wall of the cover body 6. Specifically, two steam cleaning devices 7 and two drying elements 8 are respectively arranged at staggered diagonal positions on the inner corners of the bottom wall of the cover body 6 away from the outer shell 1. This arrangement effectively covers the space inside the cover body 6, making the cleaning and drying of the sound collecting element or the sound emitting element 43 inside the cover body 6 more uniform, thorough and efficient.

[0055] In this embodiment, the first movable member and the second movable member corresponding to the opening structure are arranged in the same shape, and the opening size of the two covers 6 facing the housing 1 is the same as the shape and size of the opening structure on the housing 1, and they are respectively connected to the edges of the first supporting plate 42 and the second supporting plate in a corresponding snap-fit ​​manner. In this embodiment, the cover 6 is detachably connected to the housing 1, and can be specifically connected by screws. This arrangement ensures that the cover 6 is sufficient to accommodate the parts to be cleaned, while reducing its manufacturing cost. In this embodiment, the parts to be cleaned specifically refer to the sound-sounding noise reduction assembly.

[0056] In addition, in this embodiment, a plurality of transparent windows are arranged around the cover body 6 to allow the user to observe the internal cleaning conditions.

[0057] Working process:

[0058] like Figure 7 As shown, the range hood is started and put into normal working state, i.e., the range hood is in the state of absorbing oil fumes, the cleaning device is not working, the sound-speaking component 43 and the sound-receiving component are both arranged inside the shell 1 and facing the wind wheel structure 2, the sound-speaking and noise-reduction components start to work, the sound-receiving component collects the noise frequency generated by the operation inside the range hood, and then transmits it to the built-in controller for sound wave analysis, and finally outputs a sound wave that can offset the noise through the sound-speaking component 43 to reduce the noise.

[0059] When the range hood continuously accumulates the total working time of operation, with time T as a working threshold, when the range hood ends the range hood extraction state, the controller accumulates the working time t. If the working time t≥T, it enters the cleaning state, the motor impeller stops running, and the rotating shaft drives the noise reduction device to rotate 180°, so that the noise reduction device enters the inside of the cover body 6, and the steam cleaning device 7 starts to work, and the sound collecting component and the sound speaker 43 are rinsed inside the cover body 6. After the rinsing is completed, the drying component 8 starts to work, and the moisture on the two inner sound collecting components and the sound speaker 43 is dried respectively. After the cleaning and drying are completed, each rotating shaft drives the corresponding bearing plate to rotate 90°, so that the opening between the cover body 6 and the outer shell 1 is opened to the maximum. At this time, the impeller starts to rotate and rotates at a certain speed r for time t1. The pressure difference generated by the rotation of the impeller is used to suck the steam in the cover bodies 6 on both sides into the air duct and discharge it out of the range hood, so as to ensure that there is no residual steam in the protective cover. After that, the impeller stops, and the rotating shaft rotates 180° again to turn the noise reduction device back to the normal working state. At this time, the working time t is reset to 0, and the timing state is restarted.

[0060] When the working time t≤T, when the range hood is turned off by the user and is in a non-working standby state, the user can directly observe the degree of oil adhesion on the internal noise reduction device through the window and judge whether manual cleaning is needed. After confirming the cleaning, the cleaning device is controlled to start the cleaning steps.

[0061] In addition, the user can also manually remove the cover body 6 and clean it by directly wiping it.

[0062] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A range hood, characterized in that: include: Housing (1); A volute, arranged in the outer casing (1), comprising a wind wheel structure (2) and a power part (3); a sound-speaking and noise-reducing component, arranged adjacent to the volute, and adapted to release sound waves for neutralizing noise toward the volute, the sound-speaking and noise-reducing component comprising a sound-speaking member (43), the sound-speaking member (43) having a first working position in which the sound-speaking member (43) is rotated into the housing (1) under the action of an external force and faces the wind wheel structure (2), and a first cleaning position in which the sound-speaking member (43) is rotated to the outside of the housing (1) under the action of an external force and faces away from the wind wheel structure (2); A cleaning device is arranged adjacent to the loudspeaker and noise reduction component and is suitable for cleaning the loudspeaker and noise reduction component.

2. The range hood according to claim 1, characterized in that: The speaker noise reduction component comprises: A sound-speaker assembly (4) is arranged on a central axis passing through the wind wheel structure (2); The noise collecting component (5) is communicatively connected with the sound-speaking component (4), is arranged on the central axis of the wind wheel structure (2), and is disposed on both sides of the volute together with the sound-speaking component (4).

3. The range hood according to claim 2, characterized in that: The speaker assembly (4) comprises: A first movable member, arranged on the housing (1), comprising a first rotating shaft (41) and a first bearing plate (42), wherein the first rotating shaft (41) is movably connected to the housing (1); The sound-emitting component (43) is arranged on the first supporting plate (42) and passes through the central axis of the wind wheel structure (2).

4. The range hood according to claim 3, characterized in that: The noise collecting component (5) comprises: A second movable member, which is disposed on both sides of the housing (1) separately from the first movable member, and comprises a second rotating shaft and a second bearing plate, wherein the second rotating shaft is movably connected to the housing (1); The sound collecting component is communicatively connected with the sound emitting component (43), is arranged on the second supporting plate, and passes through the central axis of the wind wheel structure (2). The sound collecting component has a second working position in which it is rotated into the outer casing (1) under the action of an external force and faces the wind wheel structure (2), and a second cleaning position in which it is rotated to the outside of the outer casing (1) under the action of an external force and faces away from the wind wheel structure (2).

5. The range hood according to any one of claims 1 to 4, characterized in that: The cleaning device comprises: A cover body (6) is arranged on the outer side of the housing (1) and is buckled onto the first movable member and / or the second movable member; The steam cleaning device (7) is arranged on the inner wall of the cover body (6) and is suitable for releasing steam and cleaning the parts to be cleaned in the cover body (6).

6. The range hood according to claim 5, characterized in that: The cleaning device further comprises a drying element (8) arranged on the inner side of the cover body (6), wherein the drying element (8) is suitable for removing water liquid in the cover body (6).

7. The range hood according to claim 6, characterized in that: The plurality of steam cleaning devices (7) and the plurality of drying elements (8) are evenly spaced and staggered along the inner wall of the cover body (6).

8. The range hood according to claim 7, characterized in that: The first movable member and the second movable member are arranged in the same type, and the openings of the two covers (6) facing the outer shell (1) are respectively correspondingly buckled and connected to the edges of the first supporting plate (42) and the second supporting plate.

9. The range hood according to claim 5, characterized in that: The cover body (6) is detachably connected to the outer shell (1).

10. The range hood according to claim 5, characterized in that: The cover body (6) is provided with a transparent window.

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