Range hood noise reduction device and island platform all-in-one machine

Abstract

The utility model relates to the technical field of range hoods, in particular to a range hood noise reduction device and an island platform all-in-one machine. The range hood noise reduction device comprises a pipeline, a controller, an acquisition mechanism and a sound production mechanism, the acquisition mechanism and the sound production mechanism are electrically connected with the controller; one end of the pipeline is connected with an air inlet of the range hood through the fan assembly, and the other end can be connected with an air outlet of the range hood; the collection mechanism and the sound production mechanism are sequentially arranged in the pipeline from the air inlet to the air outlet; the acquisition mechanism is configured to acquire a sound wave frequency spectrum in the pipeline and generate a first sound signal; the controller is configured to generate a second sound signal which is opposite to the first sound signal in phase according to the received first sound signal; the sound production mechanism is configured to receive the second sound signal and then emit noise reduction sound waves capable of counteracting noise in the channel. Therefore, the noise generated when the range hood works can be obviously reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and in particular to a range hood noise reduction device and an island-table all-in-one range hood. Background Art

[0002] The island integrated range hood is a high-end kitchen appliance designed specifically for open kitchens, but can also be used in ordinary peninsula-style kitchens. It not only has an efficient range hood function, but also integrates a variety of kitchen equipment, providing both aesthetics and practicality. It also has the advantages of beautiful design, flexible installation, convenient operation, space optimization, and meeting the different cooking habits of users, and is gradually being accepted by consumers.

[0003] The island space is limited, and the cross-sectional size, layout and number of bends of the flue are all affected, resulting in increased noise. Utility Model Content

[0004] The purpose of the utility model includes providing a range hood noise reduction device and an island-style all-in-one machine, which can significantly reduce the noise generated when the range hood is working.

[0005] The embodiment of the present utility model can be implemented as follows:

[0006] In a first aspect, the present invention provides a range hood noise reduction device, comprising:

[0007] Pipeline, controller, collection mechanism, sound-generating mechanism;

[0008] The collection mechanism and the sound generating mechanism are both electrically connected to the controller; one end of the pipe is connected to the air inlet of the range hood through the fan assembly, and the other end can be connected to the air outlet of the range hood;

[0009] From the air inlet to the air outlet, the collection mechanism and the sound generating mechanism are sequentially arranged in the pipe;

[0010] The collecting mechanism is configured to collect the sound wave spectrum in the pipeline and generate a first sound signal;

[0011] The controller is configured to generate a second sound signal having a phase opposite to that of the first sound signal according to the received first sound signal;

[0012] The sound-generating mechanism is configured to emit a noise-reducing wave capable of offsetting the noise in the channel after receiving the second sound signal.

[0013] In an optional embodiment, the sound-generating direction of the sound-generating mechanism is the same as the direction from the air inlet to the air outlet in the duct.

[0014] In an optional embodiment, the acquisition mechanism includes a microphone assembly, a fixing plate and a cover plate;

[0015] The fixing plate and the cover plate enclose a closed accommodation space, the microphone assembly is arranged in the accommodation space, and the fixing plate has a plurality of through holes;

[0016] The fixing plate is arranged on the pipe, and the through hole faces the inside of the pipe;

[0017] The microphone assembly is electrically connected to the controller;

[0018] The microphone assembly is configured to collect a sound wave spectrum in the pipe and generate a first sound signal.

[0019] In an optional embodiment, the microphone assembly includes a microphone and a sensor;

[0020] The sensor is configured to process the sound wave spectrum collected by the microphone to generate a first sound signal.

[0021] In an optional embodiment, the collection mechanism further includes protective cotton; the protective cotton is located in the accommodating space and is arranged between the fixing plate and the microphone assembly.

[0022] In an optional embodiment, the sound-generating mechanism includes a cavity, a microporous plate, and a speaker;

[0023] The cavity is arranged on the pipe, and the cavity has a mounting hole that penetrates into the interior of the pipe. The speaker is arranged in the mounting hole, and the microporous plate covers the mounting hole to seal the cavity; the speaker is electrically connected to the controller.

[0024] In an optional embodiment, the sound-generating mechanism further includes hydrophobic and oleophobic cotton; the hydrophobic and oleophobic cotton is disposed between the mounting hole and the microporous plate.

[0025] In an optional embodiment, the microporous plate is evenly distributed with a plurality of noise reduction holes, and the noise reduction holes account for no less than 4% of the entire plate surface of the microporous plate.

[0026] In an optional embodiment, the pipeline includes a first straight pipe, a corner piece, and a second straight pipe, and the first straight pipe is connected to the second straight pipe through the corner piece;

[0027] The end of the first straight pipe away from the corner piece is connected to the air outlet; the end of the second straight pipe away from the corner piece can be connected to the fan assembly;

[0028] The first straight tube and the second straight tube have an included angle; the sound-generating mechanism is arranged at the corner piece, and the sound-generating direction of the sound-generating mechanism is toward the first straight tube.

[0029] In a second aspect, the utility model provides an island-type all-in-one machine, which includes the range hood noise reduction device described in any one of the aforementioned embodiments.

[0030] The beneficial effects of the embodiments of the present invention include, for example:

[0031] The noise reduction device of the range hood in this solution includes a pipe, a controller, a collection mechanism, and a sound-generating mechanism. The noise reduction device of the range hood achieves active noise reduction through the cooperation of the collection mechanism, the sound-generating mechanism, and the controller. During operation, the collection mechanism detects the sound wave spectrum in the pipe and generates a first sound signal; the collection mechanism feeds back the first signal to the controller, which, after analysis, generates a second sound signal with an opposite phase to the first sound signal, and feeds back the second sound signal to the sound-generating mechanism at the rear end of the pipe; after receiving the second sound signal, the sound-generating mechanism emits an opposite sound wave with an opposite phase to cancel out the noise sound wave in the channel and reduce the noise. That is, the original noise source is analyzed by the microphone mechanism, and a signal is formed to pass through the controller. After adaptive adjustment, feedback noise control is formed, and the sound-generating mechanism outputs reverse noise, thereby reducing the noise. Such a noise reduction device for a range hood has the advantages of simple structure, convenient operation, and the ability to adaptively adjust the noise reduction effect according to the noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is a schematic structural diagram of a range hood noise reduction device according to an embodiment of the present utility model;

[0034] Figure 2 This is a working principle diagram of the range hood noise reduction device according to an embodiment of the utility model;

[0035] Figure 3 This is a partial structural diagram of the noise reduction device for a range hood according to an embodiment of the present utility model;

[0036] Figure 4 This is a structural diagram of the collection mechanism of the range hood noise reduction device according to an embodiment of the present utility model;

[0037] Figure 5 This is a schematic diagram of the sound-generating mechanism of the range hood noise reduction device according to an embodiment of the present utility model;

[0038] Figure 6 This is a structural diagram of an island-table all-in-one machine according to an embodiment of the present invention;

[0039] Figure 7 This is a structural schematic diagram of the island-style all-in-one machine from another perspective of an embodiment of the present invention.

[0040] Icons: 10-range hood noise reduction device; 11-first sound signal; 12-second sound signal; 100-pipe; 101-air inlet; 102-air outlet; 110-first straight pipe; 120-second straight pipe; 130-corner piece; 200-controller; 300-collection mechanism; 310-microphone assembly; 311-microphone; 312-sensor; 320-fixing plate; 330-cover plate; 340-protective cotton; 400-sounding mechanism; 410-cavity; 411-mounting hole; 420-microporous plate; 422-noise reduction hole; 430-speaker; 440-hydrophobic and oleophobic cotton; 450-base plate; 21-island counter; 22-induction cooker assembly; 23-fan assembly. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0044] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0045] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0046] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0047] The island range hood is a high-end appliance designed specifically for open kitchens, but it can also accommodate peninsula-style kitchens. Limited island space affects the flue's cross-sectional size, layout, and number of bends, leading to increased noise. Exhaust pipe issues include: excessive length or dead bends, which can cause pressure loss, reduced suction, poor exhaust, and, in turn, loud noise. Issues with the installation location or insecure installation include: excessive adapters, an unstable range hood flow path, and the possibility of resonance with the machine during operation, resulting in noise.

[0048] In order to improve the above technical problems, a range hood noise reduction device and an island-style all-in-one machine are provided in the following embodiments.

[0049] Please refer to Figure 1 This embodiment provides a range hood noise reduction device 10 , including a pipe 100 , a controller 200 , a collection mechanism 300 , and a sound generating mechanism 400 .

[0050] The collection mechanism 300 and the sound generating mechanism 400 are both electrically connected to the controller 200; one end of the pipe 100 is connected to the air inlet 101 of the range hood through the fan assembly 23, and the other end can be connected to the air outlet 102 of the range hood;

[0051] From the air inlet 101 to the air outlet 102, the collection mechanism 300 and the sound generating mechanism 400 are sequentially arranged in the pipe 100;

[0052] The collecting mechanism 300 is configured to collect the sound wave spectrum in the pipeline 100 and generate a first sound signal 11;

[0053] The controller 200 is configured to generate a second sound signal 12 having a phase opposite to that of the first sound signal 11 according to the received first sound signal 11;

[0054] The sound generating mechanism 400 is configured to generate a noise reduction wave capable of canceling out the noise in the channel after receiving the second sound signal 12 .

[0055] like Figure 1 and Figure 2 As shown, the range hood noise reduction device 10 of this embodiment achieves active noise reduction through the cooperation of a collection mechanism 300, a sound generating mechanism 400, and a controller 200. During operation, the collection mechanism 300 detects the sound wave spectrum within the pipe 100 and generates a first sound signal 11. The collection mechanism 300 feeds the first signal back to the controller 200. After analysis, the controller 200 generates a second sound signal 12 with an opposite phase to the first sound signal 11 and feeds the second sound signal 12 back to the sound generating mechanism 400 at the rear end of the pipe 100. After receiving the second sound signal 12, the sound generating mechanism 400 emits an opposite sound wave with an opposite phase, which cancels out the noise waves within the channel and reduces noise. Specifically, the microphone 311 analyzes the original noise source, generating a signal that passes through the controller 200. After adaptive adjustment, feedback noise control is achieved, and the sound generating mechanism 400 outputs a reverse noise, thereby reducing noise.

[0056] Please continue reading Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , to understand more structural details of the range hood noise reduction device 10 of this embodiment.

[0057] from Figure 1 It can be seen that Figure 1 The parallel straight arrows in the figure indicate the direction of the flue gas flow. In an optional embodiment, the sound generation direction of the sound generation mechanism 400 is the same as the direction from the air inlet 101 to the air outlet 102 in the duct 100. This ensures that the reverse noise generated by the sound generation mechanism 400 propagates in the same direction as the forward noise in the duct 100, thereby achieving optimal sound wave cancellation and ensuring the effectiveness of active noise reduction.

[0058] from Figure 1 and Figure 3It can also be seen that in an optional embodiment, the duct 100 includes a first straight pipe 110, a corner piece 130 and a second straight pipe 120, the first straight pipe 110 is connected to the second straight pipe 120 through the corner piece 130; the end of the first straight pipe 110 away from the corner piece 130 is connected to the air outlet 102; the end of the second straight pipe 120 away from the corner piece 130 can be connected to the fan assembly 23; the first straight pipe 110 and the second straight pipe 120 have an angle; the sounding mechanism 400 is arranged at the corner piece 130, and the sounding direction of the sounding mechanism 400 is toward the first straight pipe 110. This arrangement can reduce the space occupancy rate of the pipe 100, thereby helping to reduce the volume of the range hood; on the other hand, the sound-generating mechanism 400 is arranged on the corner piece 130, and the sound-generating direction of the sound-generating mechanism 400 is toward the first straight pipe 110, so that the sound-generating direction of the sound-generating mechanism 400 is transmitted through the straight pipe 100 to obtain a good noise reduction effect, and can also avoid the sound wave interference caused by too many bends.

[0059] Optionally, the first straight tube 110 and the second straight tube 120 remain perpendicular.

[0060] See also Figure 3 and Figure 4 As can be seen from the figure, in an optional embodiment, the sound collection mechanism 300 includes a microphone assembly 310, a fixing plate 320, and a cover plate 330. The fixing plate 320 and the cover plate 330 enclose a sealed accommodation space, in which the microphone assembly 310 is disposed. The fixing plate 320 has multiple through-holes extending therethrough. The fixing plate 320 is disposed on the pipe 100, with the through-holes facing the interior of the pipe 100. The microphone assembly 310 is electrically connected to the controller 200. The microphone assembly 310 is configured to collect the sound wave spectrum within the pipe 100 and generate a first sound signal 11. The arrangement of the fixing plate 320 and the cover plate 330 provides good protection for the microphone assembly 310 and facilitates disassembly and installation.

[0061] Specifically, the collecting mechanism 300 is disposed on the side wall of the second pipe 100. In this embodiment, two collecting mechanisms 300 are symmetrically installed on both sides of the side wall of the second pipe 100.

[0062] Furthermore, in an optional embodiment, microphone assembly 310 includes a microphone 311 and a sensor 312; sensor 312 is configured to process the sound wave spectrum collected by microphone 311 to generate a first sound signal 11. In this way, microphone assembly 310 completes the operation of collecting noise and analyzing the original noise source to form first sound signal 11. Optionally, collection mechanism 300 includes two microphone assemblies 310, each of which includes an integrated microphone 311 and a sensor 312.

[0063] In an optional embodiment, the collection mechanism 300 further includes protective cotton 340, which is located within the receiving space and disposed between the fixing plate 320 and the microphone assembly 310. The protective cotton 340 protects the microphone assembly 310 from oil and moisture, while also preventing it from interfering with the noise collection process.

[0064] See also Figure 5 As can be seen from the figure, in an optional embodiment, the sound-generating mechanism 400 includes a cavity 410, a microporous plate 420, and a speaker 430. Cavity 410 is disposed on the pipe 100 and has a mounting hole 411 extending through the interior of the pipe 100. Speaker 430 is disposed in mounting hole 411, and microporous plate 420 covers mounting hole 411 to seal cavity 410. Speaker 430 is electrically connected to the controller 200. Cavity 410 provides an amplifying effect for the reverse noise reduction waves emitted by speaker 430. Microporous plate 420 ensures that the reverse noise reduction waves propagate evenly, thereby ensuring the noise reduction effect.

[0065] Optionally, the microporous plate 420 is evenly distributed with a plurality of noise reduction holes 422, and the noise reduction holes 422 account for no less than 4% of the entire surface of the microporous plate 420. That is, the through-hole ratio of the microporous plate 420 is no less than 4%, so as to ensure that the reverse noise reduction wave emitted by the sound-generating mechanism 400 is smoothly generated.

[0066] Furthermore, in an optional embodiment, the sound-generating mechanism 400 further includes hydrophobic and oleophobic cotton 440, which is disposed between the mounting hole 411 and the microporous plate 420. The hydrophobic and oleophobic cotton 440 protects the speaker 430, preventing oil and moisture from penetrating the microporous plate 420 and invading the speaker 430, thereby affecting the reverse propagation of the noise reduction wave, thereby ensuring the active noise reduction effect.

[0067] Optionally, the sound-generating mechanism 400 includes two speakers 430, and the surface of the cavity 410 is provided with two mounting holes 411 corresponding to the speakers 430. A partition is provided in the cavity 410 to separate the cavity into two independent and sealed speaker chambers, and each speaker chamber is provided with a mounting hole 411 for mounting a corresponding speaker 430.

[0068] from Figure 5 As can be seen in the figure, the sound-generating mechanism 400 also includes a bottom plate 450. The side of the chamber away from the mounting hole 411 is open, and the bottom plate 450 seals the opening to form a sealed chamber space. This arrangement increases the installation flexibility of the speaker 430 and facilitates the assembly, removal, and maintenance of the sound-generating mechanism 400.

[0069] Second, as Figure 6 and Figure 7The utility model provides an island-type all-in-one machine, which includes the range hood noise reduction device 10 of any one of the aforementioned embodiments.

[0070] The island-style all-in-one unit also includes an island 21, an induction cooktop assembly 22, a fan assembly 23, and a purification module assembly. The island 21 is topped with a microcrystalline panel, on which the air inlet 101 is located. The panel has at least one heating area, beneath which the induction cooktop assembly 22 is located. The purification module assembly, fan assembly 23, and range hood noise reduction device 10 are all built into the island 21.

[0071] In summary, the embodiment of the present invention provides a range hood noise reduction device 10 and an island-type all-in-one machine, which has at least the following advantages:

[0072] A sensor 312 is installed at one end of the inner side of the pipe 100, and a microphone 311 is installed at the other end. During normal operation, the sensor 312 detects and analyzes the sound wave spectrum in the pipe 100, generating a signal that passes through the controller 200. After adaptive adjustment, the controller 200 generates feedback noise and feeds it back to the sound-generating mechanism 400 to the speaker 430 at the rear end of the pipe 100. The speaker 430 then emits sound waves with opposite phases. This active noise reduction system has a significant noise reduction effect, a simple structure, and is easy to operate.

[0073] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. Therefore, the scope of protection of the present utility model should be based on the scope of protection of the claims.

Claims

1. A range hood noise reduction device, characterized in that: include: Pipeline (100), controller (200), collection mechanism (300), sound generating mechanism (400); The collecting mechanism (300) and the sounding mechanism (400) are both electrically connected to the controller (200); one end of the pipe (100) is connected to the air inlet (101) of the range hood via a fan assembly (23), and the other end can be connected to the air outlet (102) of the range hood; in the direction from the air inlet (101) to the air outlet (102), the collecting mechanism (300) and the sounding mechanism (400) are sequentially arranged in the pipe (100); The collecting mechanism (300) is configured to collect the sound wave spectrum in the pipeline (100) and generate a first sound signal (11); the controller (200) is configured to generate a second sound signal (12) with a phase opposite to the first sound signal (11) based on the received first sound signal (11); and the sounding mechanism (400) is configured to emit a noise reduction sound capable of offsetting the noise in the channel after receiving the second sound signal (12).

2. The range hood noise reduction device according to claim 1, characterized in that: The sound-generating direction of the sound-generating mechanism (400) is the same as the direction from the air inlet (101) to the air outlet (102) in the duct (100).

3. The range hood noise reduction device according to claim 1, characterized in that: The collection mechanism (300) includes a microphone assembly (310), a fixing plate (320) and a cover plate (330); The fixing plate (320) and the cover plate (330) are enclosed to form a sealed accommodation space, the microphone assembly (310) is arranged in the accommodation space, and the fixing plate (320) has a plurality of through holes extending therethrough; the fixing plate (320) is arranged on the pipe (100), and the through holes face the inside of the pipe (100); The microphone assembly (310) is electrically connected to the controller (200); the microphone assembly (310) is configured to collect the sound wave spectrum in the pipeline (100) and generate a first sound signal (11).

4. The range hood noise reduction device according to claim 3, characterized in that: The microphone assembly (310) includes a microphone (311) and a sensor (312); The sensor (312) is configured to process the sound wave spectrum collected by the microphone (311) to generate a first sound signal (11).

5. The range hood noise reduction device according to claim 3, characterized in that: The collecting mechanism (300) further includes protective cotton (340); the protective cotton (340) is located in the accommodating space and is arranged between the fixing plate (320) and the microphone assembly (310).

6. The range hood noise reduction device according to claim 1, characterized in that: The sound-generating mechanism (400) includes a cavity (410), a microporous plate (420), and a speaker (430); The cavity (410) is arranged on the pipe (100), and the cavity (410) has a mounting hole (411) that penetrates into the interior of the pipe (100). The speaker (430) is arranged in the mounting hole (411), and the microporous plate (420) covers the mounting hole (411) to seal the cavity (410); the speaker (430) is electrically connected to the controller (200).

7. The range hood noise reduction device according to claim 6, characterized in that: The sound-generating mechanism (400) further comprises hydrophobic and oleophobic cotton (440); the hydrophobic and oleophobic cotton (440) is arranged between the mounting hole (411) and the microporous plate (420).

8. The range hood noise reduction device according to claim 6, characterized in that: The microporous plate (420) is evenly distributed with a plurality of noise reduction holes (422), and the noise reduction holes (422) account for no less than 4% of the entire plate surface of the microporous plate (420).

9. The range hood noise reduction device according to claim 1, characterized in that: The pipeline (100) comprises a first straight pipe (110), a corner piece (130) and a second straight pipe (120); the first straight pipe (110) is connected to the second straight pipe (120) via the corner piece (130); the end of the first straight pipe (110) away from the corner piece (130) is connected to the air outlet (102); the end of the second straight pipe (120) away from the corner piece (130) can be connected to the fan assembly (23); The first straight tube (110) and the second straight tube (120) have an included angle; the sound-generating mechanism (400) is arranged on the corner piece (130), and the sound-generating direction of the sound-generating mechanism (400) is toward the first straight tube (110).

10. An island-style all-in-one machine, characterized by: The island-type all-in-one machine includes the range hood noise reduction device according to any one of claims 1 to 9.

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