Noise elimination device and method and smoke stove linkage equipment

Abstract

The invention relates to a noise elimination device and method and range hood and stove linkage equipment, and aims at the range hood and stove linkage equipment comprising a range hood and a stove to eliminate a first noise signal in an area perpendicular to the outside of a panel of the range hood through a first noise reduction module arranged on the inner side of the panel of the range hood. Meanwhile, through the second noise reduction module arranged on the panel of the kitchen range, a second noise signal perpendicular to the area outside the panel of the kitchen range is eliminated. Noise in a key noise area of a front space of the range hood plane is eliminated, noise in a junction area between the range hood and the middle of the stove is eliminated, noise fields in all directions are comprehensively controlled, noise in the whole cooking environment is reduced, and user experience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to a noise elimination device and method, and a smoke and stove linkage device. Background Art

[0002] As the quality of life improves, the intelligentization of kitchen appliances has made great progress. Among the existing kitchen equipment, the range hood can timely exhaust the fumes in the kitchen environment, keeping the kitchen environment and even the entire indoor environment fresh. Household stoves can meet people's various cooking needs. With the development of technology, the smoke stove linkage system has also been launched on the market, which can automatically turn on the range hood to smoke when the user starts cooking, greatly providing convenience for users.

[0003] However, range hoods and stoves usually generate a lot of noise when working, which affects the user experience. Especially as the air volume, wind power and fume extraction effect of range hoods are getting better and better, the higher the gear, the greater the noise. Summary of the invention

[0004] Based on this, it is necessary to provide a noise elimination device and method, and a smoke-stove linkage device to address the technical problem of noise pollution when the above-mentioned smoke-stove linkage device is working.

[0005] A noise elimination device is applied to a range hood and stove linkage device including a range hood and a stove, comprising:

[0006] A first noise reduction module is disposed on the inner side of the first panel and is used to eliminate a first noise signal along a region perpendicular to the first panel, wherein the first panel is a panel of the range hood;

[0007] The second noise reduction module is arranged on the second panel and is used for eliminating the second noise signal in the area perpendicular to the second panel, and the second panel is the panel of the cooker.

[0008] In one embodiment, the first noise reduction module includes at least one noise reduction unit, and each noise reduction unit is evenly distributed on the inner side of the first panel.

[0009] In one of the embodiments, the second noise reduction module includes at least one noise reduction unit, and each noise reduction unit is evenly distributed in the orthographic projection area of ​​the range hood on the second panel.

[0010] In one embodiment, the noise reduction unit includes a noise compensation element and at least one noise monitoring element, and each of the noise monitoring elements is evenly distributed on a semicircular detection surface with the position of the noise compensation element as the center of the circle, and the monitoring direction of each of the noise monitoring elements is set to be outward along the radius direction of the semicircular detection surface.

[0011] In one embodiment, the noise monitoring element includes a silicon microphone sensor.

[0012] In one embodiment, the noise compensation element includes a speaker.

[0013] In one of the embodiments, a noise reduction layer is further included, and the noise reduction layer is arranged on the wall where the range hood is installed.

[0014] In one embodiment, a noise elimination method is provided, which is implemented based on the noise elimination device described in any of the above embodiments, and the method includes:

[0015] monitoring a first noise signal and a second noise signal;

[0016] A first noise reduction signal having the same amplitude and opposite direction as the first noise signal and a second noise reduction signal having the same amplitude and opposite direction as the second noise signal are generated.

[0017] In one embodiment, monitoring the noise signal includes:

[0018] Acquire multiple monitoring signals detected on a semicircular detection surface;

[0019] The monitoring signal with the highest amplitude among the monitoring signals is determined as the noise signal.

[0020] In one embodiment, a range hood and stove linkage device is provided, including a range hood, a stove, and a noise elimination device described in any of the above embodiments.

[0021] The above-mentioned noise elimination device and method, and the smoke and stove linkage device, for the smoke and stove linkage device including the range hood and the stove, achieves the elimination of the first noise signal along the area outside the panel perpendicular to the range hood through the first noise reduction module arranged on the inner side of the panel of the range hood, and at the same time, achieves the elimination of the second noise signal along the area outside the panel perpendicular to the stove through the second noise reduction module arranged on the panel of the stove. This application not only eliminates the noise in the key noise area in the space in front of the range hood plane, but also eliminates the noise in the boundary area between the range hood and the middle of the stove. By comprehensively controlling the noise field in all directions, the noise in the entire cooking environment is reduced and the user experience is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 is a schematic structural diagram of a noise elimination device in one embodiment;

[0024] Figure 2 is a schematic structural diagram of a first noise reduction module in an embodiment;

[0025] Figure 3 is a schematic structural diagram of a second noise reduction module in an embodiment;

[0026] Figure 4 A schematic diagram of the distribution of noise monitoring elements on a single section of a semicircular detection surface in one embodiment;

[0027] Figure 5 A schematic diagram of the noise direction under the influence of a single noise source in one embodiment;

[0028] Figure 6 is a flow chart of a noise elimination method in one embodiment;

[0029] Figure 7 FIG. 4 is a flow chart of a noise elimination method in another embodiment. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. The embodiments of the present application are given in the accompanying drawings, but the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0031] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0032] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0033] It can be understood that “at least one” means one or more, “plurality” means two or more, and “at least a portion of an element” means a part or all of an element.

[0034] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0036] In an exemplary embodiment, a noise elimination device 100 is provided, which is applied to a range hood linkage device including a range hood 200 and a range cooker 300. Figure 1 As shown, the noise elimination device 100 includes: a first noise reduction module 110, which is arranged on the inner side of the first panel, and is used to eliminate the first noise signal along the area outside the first panel perpendicular to the first panel, and the first panel is the panel of the range hood 200; a second noise reduction module 120, which is arranged on the second panel, and is used to eliminate the second noise signal along the area outside the second panel perpendicular to the second panel, and the second panel is the panel of the stove 300.

[0037] It can be understood that the noise elimination device 100 provided in the present application is mainly used in smoke and stove linkage equipment. It can make up for the fact that after the noise reduction treatment of the range hood or the stove is performed separately, the noise field in the scene where the two are actually used in linkage is destroyed, and the noise reduction treatment has little effect. Among them, the working principle of the smoke and stove linkage equipment is based on intelligent sensing and control. When the stove 300 starts working, the heat or specific signal generated will be captured by the sensing device on the range hood 200. The sensing device converts these changes into electrical signals and transmits them to the control module of the range hood 200, thereby realizing the judgment of whether the working state needs to be started or adjusted according to the received signal, thereby realizing the linkage between the range hood 200 and the stove 300.

[0038] The smoke stove linkage device used in this application can have multiple functions, which are briefly described as follows. When the stove 300 is ignited, the range hood 200 can automatically sense and start, and after starting, the wind speed can be slowly increased to perform smoke exhaust operations, so that the instantaneous noise interference caused by manually switching the range hood on and off will not be generated. After the stove 300 is turned off, the range hood 200 can also automatically delay shutdown (for example, turn off the range hood after 3 minutes) to ensure that the residual oil smoke and exhaust gas are exhausted. In addition, the range hood 200 can also identify the fire power of the stove 300 and automatically adjust the air volume gear of the range hood 200. When the fire power is large, the air volume of the range hood 200 will automatically increase; when the fire power is small, the air volume of the range hood 200 will automatically decrease. This "wind follows the smoke" effect makes smoke exhaust more accurate and efficient. When there is no operation for a long time or the stove 300 is detected to be turned off, the range hood 200 can also automatically enter a low-energy mode or a shutdown state to save energy. Users can also set different working modes according to personal preferences and cooking needs. For example, the wind speed and lighting of the range hood 200 can be automatically adjusted to achieve the best smoke exhaust effect and cooking experience.

[0039] Specifically, after the range hood 200 interacts with the stove 300 and starts working, noise will also be generated in the working areas of the two products. Figure 1 As shown, the noise fields generated by the range hood 200 and the stove 300 are both spherically distributed. Combined with the current main usage experience, it can be seen that the noise intensity generated by the stove 300 will be smaller than the noise intensity generated by the range hood 200, and the core noise that needs to be reduced is the noise generated by the range hood 200. Furthermore, from the user's perspective, the key area that needs to be noise reduced is the area outside the panel perpendicular to the range hood, which is the area that generates noise directly facing the user. However, in the middle area where the noise fields generated by the range hood 200 and the stove 300 intersect, the noise field changes due to the cancellation phenomenon caused by the opposite directions of the noises of the two, and separate noise elimination also needs to be considered.

[0040] Furthermore, the present application provides a first noise reduction module 110 on the inner side of the first panel to eliminate the first noise signal along the area outside the first panel, that is, the area generating noise directly facing the user. The first panel is the outer panel of the range hood 200. It can be understood that the first noise reduction module 110 is provided on the inner side of the first panel, which is equivalent to providing the last noise elimination barrier before the noise reaches the external environment, so as to effectively eliminate the noise emitted by the motor or other components inside the range hood 200.

[0041] Furthermore, a second noise reduction module 120 is provided on the second panel to eliminate the second noise signal in the area perpendicular to the second panel, i.e., the middle area where the noise fields generated by the range hood 200 and the stove 300 intersect. Since the noise intensity generated by the stove 300 is smaller than the noise intensity generated by the range hood 200, after the noise fields generated by the range hood 200 and the stove 300 are offset in the middle area of ​​the intersection, there should still be noise from the range hood 200 to the stove 300 (perpendicular to the second panel). Furthermore, the second panel may be the upper panel of the stove 300, and the second noise reduction module 120 may be provided on the outside of the second panel to effectively eliminate the noise propagating vertically to the second panel.

[0042] It can be understood that the first noise reduction module 110 and the second noise reduction module 120 in this embodiment can be implemented by selecting different noise reduction devices based on different noise reduction principles. For example, for the first noise reduction module 110, it can be implemented by covering the inner side of the first panel with sound insulation material or noise reduction coating, or by adding a white noise generator or other device that produces a uniform sound frequency to cover the first noise signal, or it can be based on active noise reduction technology, by adding a sound wave generator to generate a noise reduction signal with the same intensity and opposite direction as the first noise signal. Similarly, a suitable device can be selected as the second noise reduction module 120 based on different noise reduction principles.

[0043] The above-mentioned noise elimination device, for the range hood and stove linkage equipment including the range hood and the stove, eliminates the first noise signal in the area outside the panel perpendicular to the range hood through the first noise reduction module arranged on the inner side of the panel of the range hood, and eliminates the second noise signal in the area outside the panel perpendicular to the stove through the second noise reduction module arranged on the panel of the stove. Not only the noise in the key noise area in the space in front of the range hood plane is eliminated, but also the noise in the junction area between the range hood and the middle of the stove is eliminated. By comprehensively controlling the noise field in all directions, the noise in the entire cooking environment is reduced and the user experience is improved.

[0044] In an exemplary embodiment, Figure 2 As shown, the first noise reduction module 110 includes at least one noise reduction unit 111, and each noise reduction unit 111 is evenly distributed on the inner side of the first panel.

[0045] Specifically, since the noise propagation is not in a fixed direction, in order to eliminate most of the noise generated by the range hood 200 as much as possible, multiple noise reduction units 111 may be provided, and each noise reduction unit 111 may be evenly distributed on the inner side of the first panel. The number of noise reduction units 111 included in the first noise reduction module 110 is not limited, and an appropriate number of noise reduction units 111 may be selected according to the actual area of ​​the first panel, and the intensity and distribution of the actual noise. It can be understood that even distribution may be to provide multiple noise reduction units 111 on the inner side of the first panel at fixed intervals.

[0046] In an exemplary embodiment, Figure 3 As shown, the second noise reduction module 120 includes at least one noise reduction unit 121, and each noise reduction unit 121 is evenly distributed in the orthographic projection area of ​​the range hood 200 on the second panel.

[0047] Specifically, the orthographic projection area of ​​the range hood 200 on the second panel can be understood as the maximum area of ​​the range hood 200 in a direction parallel to the second panel. When the maximum area of ​​the range hood 200 in a direction parallel to the second panel is greater than or equal to the area of ​​the second panel, the noise reduction units 121 can be evenly distributed on the second panel; and when the maximum area of ​​the range hood 200 in a direction parallel to the second panel is less than the area of ​​the second panel, the noise reduction units 121 can be evenly distributed on the orthographic projection area.

[0048] It can be understood that evenly distributing the multiple noise reduction units 121 in the orthographic projection area of ​​the range hood 200 on the second panel can effectively eliminate the noise in the middle area where the noise field generated by the range hood 200 and the stove 300 intersect.

[0049] Furthermore, the number of noise reduction units 121 included in the second noise reduction module 120 is not limited, and a suitable number of noise reduction units 121 can be selected according to the actual area of ​​the orthographic projection area of ​​the range hood 200 on the second panel, and the intensity and distribution of the actual noise. It can be understood that uniform distribution can also be to set multiple noise reduction units 121 on the second panel at fixed intervals.

[0050] It can be understood that the noise reduction unit 111 of the first noise reduction module 110 and the noise reduction unit 121 of the second noise reduction module 120 can be implemented by using the same noise reduction unit 10 as follows.

[0051] In an exemplary embodiment, Figure 4 As shown, the noise reduction unit 10 includes a noise compensation element 11 and at least one noise monitoring element 12. The noise monitoring elements 12 are evenly distributed on a semicircular detection surface with the position of the noise compensation element 11 as the center of the circle. The monitoring direction of each noise monitoring element 12 is set to be outward along the radius direction of the semicircular detection surface.

[0052] It can be understood that since sound has reflection and cancellation phenomena, and sound is composed of a certain spectrum, then if a sound wave signal can be generated based on the spectrum of noise, and its spectrum is exactly the same as the noise signal to be eliminated, but the phase is just opposite (180° difference), the noise signal can be completely canceled out by the generated sound wave signal, thus achieving the purpose of noise elimination.

[0053] Specifically, multiple noise monitoring elements 12 are evenly distributed on the semicircular detection surface to detect the noise intensity of multiple points on the semicircular detection surface. Then, the multiple noise intensities detected can be compared to determine the direction of the noise with the largest noise intensity as the main noise direction of the point, so that the noise compensation element 11 set at the center of the circle can generate a noise reduction signal in the opposite direction. For example, Figure 5 In the case of a single-point noise source, the direction of the noise with the largest (main) noise intensity corresponding to each noise reduction unit 10 is determined, and then the noise compensation element 11 set at the center of the noise reduction unit 10 can generate a noise reduction signal pointing to the noise source point along this direction.

[0054] Furthermore, since the noise is actually a sound wave signal with a certain propagation direction, the monitoring direction of each noise monitoring element 12 can be set to be outward along the radius of the semicircular detection surface, so that the noise compensation element 11 arranged at the center of the circle can generate a noise reduction signal in the opposite direction along the monitoring direction of the noise monitoring element 12 with the largest noise intensity, thereby completely canceling out the noise signal.

[0055] The number of noise monitoring elements 12 disposed on the semicircular detection surface is not limited, and a suitable number of noise monitoring elements 12 can be selected according to the actual product size, and the actual noise intensity and distribution. It can be understood that uniform distribution can be that a plurality of noise monitoring elements 12 are disposed on the semicircular detection surface at fixed intervals.

[0056] Understandably, Figure 4 The figure shows the distribution of the noise monitoring elements 12 on a single section of the semicircular detection surface. The method of fixing multiple noise monitoring elements 12 on the semicircular detection surface can be to set a semicircular hollow frame and then fix multiple noise monitoring elements 12 on the semicircular hollow frame.

[0057] For example, the specific type of noise monitoring element 12 that can be used in the present application is not unique and can be selected according to the actual detection principle. For example, a microphone, a sound sensor, a noise level meter or a noise sensor can be used. The noise sensor can also be capacitive, piezoelectric or resistive.

[0058] In an exemplary embodiment, the noise monitoring element used in the present application includes a silicon microphone sensor.

[0059] Specifically, the silicon microphone sensor, also known as the MEMS microphone (Micro-Electro-Mechanical Systems Microphone), is a new type of microphone technology that can use micro-sensor technology to directly convert sound wave vibrations into electrical signals. When sound waves enter the silicon microphone, they cause the silicon wafer (usually made of silicon material) to produce a tiny flexural deformation. This flexural deformation changes the distance between the electrodes, thereby changing the capacitance. Since the capacitance is inversely proportional to the voltage, when the capacitance changes, the silicon microphone will output a corresponding voltage signal. After amplification and processing, this signal can be converted into an analog or digital audio signal. Due to the advantages of high signal-to-noise ratio, high stability, small size and low power consumption of the silicon microphone sensor, it can be more conveniently integrated into the noise reduction unit to realize the identification of the intensity and direction of the noise field of the smoke and stove linkage equipment.

[0060] In an exemplary embodiment, the noise compensation element used in the present application includes a speaker.

[0061] Specifically, speakers can use electromagnetic induction and vibration to convert electrical energy into sound energy. When current passes through the coil of the speaker (commonly called the voice coil), a magnetic field is generated around the coil. This magnetic field interacts with the permanent magnetic field inside the speaker, causing the coil to be acted upon by a force. This force on the coil causes the vibrating film connected to it (such as a speaker cone or paper cone) to vibrate. These vibrations change with the change of current, which in turn drives the surrounding air to fluctuate and form sound waves.

[0062] Furthermore, after detecting the direction of the noise signal with the highest noise intensity on the semicircular detection surface, a noise reduction signal in the opposite direction can be generated through the speaker along the monitoring direction of the silicon microphone sensor with the highest noise intensity, and propagated through the air to completely cancel out the noise signal.

[0063] In an exemplary embodiment, Figure 1 As shown, the noise elimination device further includes a noise reduction layer 130 , and the noise reduction layer 130 is disposed on the wall on which the range hood 200 is installed.

[0064] Specifically, the noise reduction layer 130 may be implemented by covering with sound absorbing material or noise reduction paint.

[0065] In the embodiment of the present application, this can be achieved by providing a layer of sound-absorbing material on the wall where the range hood 200 is installed. Sound-absorbing materials can be divided into various types according to their structures and components. For example, porous sound-absorbing materials can be used, including but not limited to mineral wool, glass wool, felt, wood wool sound-absorbing panels, etc.; resonant sound-absorbing materials can be used, including but not limited to perforated plywood, perforated fiber cement boards, etc.; film sound-absorbing materials can be used, including but not limited to plastic films, canvas, artificial leather, etc.; special structure sound-absorbing materials can also be used, such as space sound absorbers, and the sound-absorbing materials can be made into space sound absorbers of various shapes and hung in the air.

[0066] For example, the smoke and stove linkage device may further include a controller, which may be arranged in the range hood and / or the stove. The controller may realize the linkage control between the range hood and the stove, and may also connect the noise compensation element and the noise monitoring element of the noise reduction unit to realize the noise reduction processing of the smoke and stove linkage device.

[0067] It can be understood that the controller is the control center of the smoke and stove linkage device, which can be a control chip or control circuit board set in the range hood and / or the stove, or an external control system based on wireless communication. The external control system can be implemented through devices such as terminals or servers. The terminals can be, but are not limited to, various personal computers, smart phones, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things devices can be smart speakers, smart car devices, etc. Portable wearable devices can be smart watches, smart bracelets, etc. The server can be implemented as an independent server or a server cluster consisting of multiple servers.

[0068] In combination with the above embodiments, in an exemplary embodiment, Figure 6 As shown, a noise elimination method is provided, which is implemented based on the noise elimination device described in any of the above embodiments, and can be specifically applied to the controller of the above smoke stove linkage device. The method includes the following steps 202 to 204, wherein:

[0069] Step 202: monitor a first noise signal and a second noise signal.

[0070] It can be understood that the noise elimination method provided in the present application is mainly used in smoke and stove linkage equipment. It can make up for the fact that after the noise reduction treatment of the range hood or the stove is performed separately, the noise field in the actual scenario of the linkage of the two is destroyed, and the noise reduction treatment has little effect. Among them, the working principle of the smoke and stove linkage equipment is based on intelligent sensing and control. When the stove starts working, the heat or specific signals generated will be captured by the sensing device on the range hood. The sensing device converts these changes into electrical signals and transmits them to the control module of the range hood, thereby realizing the judgment of whether the working state needs to be started or adjusted according to the received signal, thereby realizing the linkage between the range hood and the stove.

[0071] The smoke stove linkage device used in this application can have multiple functions, which are briefly described as follows. When the stove is ignited, the range hood can automatically sense and start to perform smoke exhaust operations. After the stove is turned off, the range hood can also automatically delay shutdown to ensure that the residual oil smoke and exhaust gas are exhausted. In addition, the range hood can also identify the firepower of the stove and automatically adjust the air volume gear of the range hood. When the firepower is large, the air volume of the range hood will automatically increase; when the firepower is small, the air volume of the range hood will automatically decrease. This "wind follows the smoke" effect makes smoke exhaust more accurate and efficient. When there is no operation for a long time or the stove is detected to be turned off, the range hood can also automatically enter a low-energy mode or turn off state to save energy. Users can also set different working modes according to personal preferences and cooking needs. For example, the wind speed, lighting, etc. of the range hood are automatically adjusted to achieve the best smoke exhaust effect and cooking experience.

[0072] Specifically, the first noise signal is the noise in the area outside the first panel, that is, the area generating noise directly facing the user, which can be eliminated by setting a first noise reduction module on the inner side of the first panel. The first panel is the outer panel of the range hood. It can be understood that the first noise reduction module is set on the inner side of the first panel, which is equivalent to setting the last noise elimination barrier before the noise reaches the external environment, so as to effectively eliminate the noise emitted by the motor or other components inside the range hood.

[0073] Furthermore, the second noise signal is the noise in the area outside the second panel perpendicularly, that is, the middle area where the noise field generated by the range hood and the stove intersects, which can be eliminated by arranging a second noise reduction module on the second panel.

[0074] Since the noise intensity generated by the stove is smaller than that generated by the range hood, after the noise fields generated by the range hood and the stove are offset in the middle area of ​​the junction, there should still be noise from the range hood to the stove (perpendicular to the second panel). Furthermore, the second panel may be the upper panel of the stove, and the second noise reduction module may be arranged on the outer side of the second panel to effectively eliminate the noise propagating vertically to the second panel.

[0075] Step 204: Generate a first noise reduction signal having the same amplitude and opposite direction as the first noise signal, and a second noise reduction signal having the same amplitude and opposite direction as the second noise signal.

[0076] It can be understood that since sound has reflection and cancellation phenomena, and sound is composed of a certain spectrum, then if a sound wave signal can be generated based on the spectrum of noise, and its spectrum is exactly the same as the noise signal to be eliminated, but the phase is just opposite (180° difference), the noise signal can be completely canceled out by the generated sound wave signal, thus achieving the purpose of noise elimination.

[0077] Furthermore, the first noise signal and the second noise signal can be eliminated by generating a first noise reduction signal with the same amplitude and opposite direction as the first noise signal and a second noise reduction signal with the same amplitude and opposite direction as the second noise signal.

[0078] In this embodiment, not only the noise in the key noise area in the space in front of the range hood plane is eliminated, but also the noise in the boundary area between the range hood and the middle of the stove is eliminated. By comprehensively controlling the noise field in all directions, the noise in the entire cooking environment is reduced and the user experience is improved.

[0079] In an exemplary embodiment, Figure 7 As shown, the monitoring noise signal in step 202 includes the following steps 302 to 304, wherein:

[0080] Step 302: Acquire multiple monitoring signals detected on the semicircular detection surface.

[0081] Step 304: determine the monitoring signal with the highest amplitude among the monitoring signals as a noise signal.

[0082] Specifically, multiple noise monitoring elements are evenly distributed on a set semicircular detection surface to detect the noise intensity of monitoring signals at multiple points on the semicircular detection surface. Then, the multiple monitoring signals detected can be compared to determine the direction of the monitoring signal with the largest noise intensity as the main noise direction of the semicircular detection surface, so that the noise compensation element set at the center of the circle can generate a noise reduction signal in the opposite direction. For example, Figure 5 In the case of a single-point noise source, the direction of the noise with the largest (main) noise intensity corresponding to each noise reduction unit is determined, and then the noise compensation element set at the center of the noise reduction unit can generate a noise reduction signal pointing to the noise source point along this direction.

[0083] Furthermore, since noise is actually a sound wave signal with a certain propagation direction, the monitoring direction of each noise monitoring element can be set to be outward along the radius of the semicircular detection surface, so that the noise compensation element arranged at the center of the circle can generate a noise reduction signal in the opposite direction along the monitoring direction of the noise monitoring element that detects the largest noise intensity, thereby completely offsetting the noise signal.

[0084] The implementation solution provided by the noise elimination method to solve the problem is similar to the implementation solution recorded in the above-mentioned noise elimination device. Therefore, the specific limitations in one or more noise elimination method embodiments provided above can refer to the above limitations on the noise elimination device and will not be repeated here.

[0085] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0086] In an exemplary embodiment, Figure 1 As shown, a range hood and stove linkage device is provided, including a range hood 200, a stove 300 and a noise elimination device.

[0087] Specifically, the noise elimination device includes at least one noise reduction unit 10 uniformly distributed on the inner side of the first panel, and at least one noise reduction unit 10 uniformly distributed in the orthographic projection area of ​​the range hood 200 on the second panel. The first panel is the panel of the range hood 200, and the second panel is the panel of the cooker 300. Each noise reduction unit 10 includes a noise compensation element 11 and at least one noise monitoring element 12, and each noise monitoring element 12 is uniformly distributed on a semicircular detection surface with the position of the noise compensation element 11 as the center of the circle, and the monitoring direction of each noise monitoring element 12 is set to face outward along the radius direction of the semicircular detection surface. The noise monitoring element 11 includes a silicon microphone sensor, and the noise compensation element 12 includes a speaker.

[0088] It can be understood that the noise elimination device 100 provided in the present application is mainly used in smoke and stove linkage equipment. It can make up for the fact that after the noise reduction treatment of the range hood or the stove is performed separately, the noise field in the scene where the two are actually used in linkage is destroyed, and the noise reduction treatment has little effect. Among them, the working principle of the smoke and stove linkage equipment is based on intelligent sensing and control. When the stove 300 starts working, the heat or specific signal generated will be captured by the sensing device on the range hood 200. The sensing device converts these changes into electrical signals and transmits them to the control module of the range hood 200, thereby realizing the judgment of whether the working state needs to be started or adjusted according to the received signal, thereby realizing the linkage between the range hood 200 and the stove 300.

[0089] The smoke stove linkage device used in this application can have multiple functions, which are briefly described as follows. When the stove 300 is ignited, the range hood 200 can automatically sense and start to perform smoke exhaust operations. After the stove 300 is turned off, the range hood 200 can also automatically delay shutdown to ensure that the residual oil smoke and exhaust gas are exhausted. In addition, the range hood 200 can also identify the fire power of the stove 300 and automatically adjust the air volume gear of the range hood 200. When the fire power is large, the air volume of the range hood 200 will automatically increase; when the fire power is small, the air volume of the range hood 200 will automatically decrease. This "wind follows the smoke" effect makes smoke exhaust more accurate and efficient. When there is no operation for a long time or the stove 300 is detected to be turned off, the range hood 200 can also automatically enter a low-energy consumption mode or a closed state to save energy. Users can also set different working modes according to personal preferences and cooking needs. For example, the wind speed, lighting, etc. of the range hood 200 are automatically adjusted to achieve the best smoke exhaust effect and cooking experience.

[0090] Specifically, after the range hood 200 interacts with the stove 300 and starts working, noise will also be generated in the working areas of the two products. Figure 1 As shown, the noise fields generated by the range hood 200 and the stove 300 are both spherically distributed. Combined with the current main usage experience, it can be seen that the noise intensity generated by the stove 300 will be smaller than the noise intensity generated by the range hood 200, and the core noise that needs to be reduced is the noise generated by the range hood 200. Furthermore, from the user's perspective, the key area that needs to be noise reduced is the area outside the panel perpendicular to the range hood, which is the area that generates noise directly facing the user. However, in the middle area where the noise fields generated by the range hood 200 and the stove 300 intersect, the noise field changes due to the cancellation phenomenon caused by the opposite directions of the noises of the two, and separate noise elimination also needs to be considered.

[0091] Furthermore, the present application eliminates the first noise signal in the area outside the first panel perpendicular to the first panel, that is, the area generating noise directly facing the user, by setting multiple noise reduction units 10 on the inner side of the first panel. The first panel is the outer panel of the range hood 200. It can be understood that the multiple noise reduction units 10 are set on the inner side of the first panel, which is equivalent to setting the last noise elimination barrier before the noise reaches the external environment, so as to effectively eliminate the noise emitted by the motor or other components inside the range hood 200.

[0092] Furthermore, multiple noise reduction units 10 are arranged on the second panel to eliminate the second noise signal in the area perpendicular to the second panel, i.e., the middle area where the noise fields generated by the range hood 200 and the stove 300 intersect. Since the noise intensity generated by the stove 300 is smaller than the noise intensity generated by the range hood 200, after the noise fields generated by the range hood 200 and the stove 300 are offset in the middle area of ​​the intersection, there should still be noise from the range hood 200 to the stove 300 (perpendicular to the second panel). Furthermore, the second panel can be the upper panel of the stove 300, and the multiple noise reduction units 10 can be arranged on the outside of the second panel to effectively eliminate the noise propagating vertically to the second panel.

[0093] The implementation solution provided by the smoke-stove linkage device to solve the problem is similar to the implementation solution recorded in the above-mentioned noise elimination device. Therefore, the specific limitations in one or more smoke-stove linkage device embodiments provided above can refer to the above limitations on the noise elimination device and will not be repeated here.

[0094] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0095] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A noise elimination device, applied to a range hood and a stove linkage device including a range hood and a stove, characterized in that: include: A first noise reduction module is disposed on the inner side of the first panel and is used to eliminate a first noise signal along a region perpendicular to the first panel, wherein the first panel is a panel of the range hood; The second noise reduction module is arranged on the second panel and is used for eliminating the second noise signal in the area perpendicular to the second panel, and the second panel is the panel of the cooker.

2. The noise elimination device according to claim 1, characterized in that: The first noise reduction module includes at least one noise reduction unit, and each noise reduction unit is evenly distributed on the inner side of the first panel.

3. The noise elimination device according to claim 1, characterized in that: The second noise reduction module includes at least one noise reduction unit, and each noise reduction unit is evenly distributed in the orthographic projection area of ​​the range hood on the second panel.

4. The noise elimination device according to claim 2 or 3, characterized in that: The noise reduction unit includes a noise compensation element and at least one noise monitoring element. The noise monitoring elements are evenly distributed on a semicircular detection surface with the position of the noise compensation element as the center of the circle. The monitoring direction of each noise monitoring element is set to be outward along the radius direction of the semicircular detection surface.

5. The noise elimination device according to claim 4, characterized in that: The noise monitoring element includes a silicon microphone sensor.

6. The noise elimination device according to claim 4, characterized in that: The noise compensation element includes a speaker.

7. The noise elimination device according to claim 1, characterized in that: It also includes a noise reduction layer, which is arranged on the wall where the range hood is installed.

8. A noise elimination method, implemented based on the noise elimination device according to any one of claims 1 to 7, characterized in that: The method comprises: monitoring a first noise signal and a second noise signal; A first noise reduction signal having the same amplitude and opposite direction as the first noise signal and a second noise reduction signal having the same amplitude and opposite direction as the second noise signal are generated.

9. The noise elimination method according to claim 8, characterized in that: Monitoring noise signals include: Acquire multiple monitoring signals detected on a semicircular detection surface; The monitoring signal with the highest amplitude among the monitoring signals is determined as the noise signal.

10. A smoke and stove linkage device, characterized in that: It comprises a range hood, a stove, and the noise elimination device according to any one of claims 1 to 7.

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