A noise reduction structure, a dish washing machine applying the same, and a noise reduction control method

Abstract

The application discloses a noise reduction structure, a dish washing machine applying the same and a noise reduction control method, wherein the noise reduction structure is applied to kitchen appliances, and comprises a magnetic film and an electromagnetic induction coil, the magnetic film is covered on the electromagnetic induction coil; the electromagnetic induction coil drives the magnetic film to vibrate to absorb noise after being electrified. In the application, the magnetic film is covered on the electromagnetic induction coil, the electromagnetic induction coil drives the magnetic film to vibrate to realize noise reduction after being electrified; and the noise reduction structure in the application can be applied to kitchen appliances, such as dish washing machines, gas water heaters, range hoods and the like, can significantly reduce the noise generated when the kitchen appliances work, and effectively improves the use experience of users.

Description

Technical Field

[0001] This invention belongs to the field of noise reduction device technology, specifically relating to a noise reduction structure, a dishwasher using the same, and a noise reduction control method. Background Technology

[0002] Kitchen appliances are a category of household appliances specifically designed for kitchen use. They can be categorized into five types based on their purpose: food preparation, cooking, storage, and kitchen hygiene. Examples include refrigerators, disinfection cabinets, range hoods, and gas water heaters. Gas water heaters are widely recognized by consumers for their energy-saving and environmentally friendly advantages; however, they emit at least 55 decibels of noise during operation. Meanwhile, with the current market trend towards high-volume, high-suction range hoods, as airflow increases, the noise levels are also rising. Prolonged exposure to noise while using these kitchen appliances can cause users to experience irritability, chest pain, palpitations, and other adverse reactions, and may even seriously impact their physical and mental health.

[0003] Furthermore, as people's living standards improve, their requirements for kitchen appliances are also gradually increasing. When purchasing kitchen appliances, users are paying more and more attention to noise levels. Therefore, noise has become an urgent technical problem to be solved in existing kitchen appliances, making it essential to design a noise reduction structure that is suitable for kitchen appliances and can effectively reduce the noise they generate during operation. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a noise reduction structure that achieves noise reduction through the interaction between a magnetic thin film and an electromagnetic induction coil.

[0005] The present invention also discloses a dishwasher.

[0006] The present invention also discloses a noise reduction control method.

[0007] The technical solution adopted in this invention is:

[0008] A noise reduction structure for use in kitchen appliances includes a magnetic film and an electromagnetic induction coil, wherein the magnetic film covers the electromagnetic induction coil; when the electromagnetic induction coil is energized, it drives the magnetic film to vibrate to absorb noise.

[0009] Preferably, the cross-section of the magnetic thin film is wavy, formed by connecting at least two arcs, and the shape of the electromagnetic induction coil matches the shape of the magnetic thin film.

[0010] Preferably, at least two of the arcs have different diameters to absorb noise of different frequencies.

[0011] Preferably, the diameter of the arc is positively correlated with the noise level at the location of the arc.

[0012] A dishwasher, characterized in that it includes the above-mentioned noise reduction structure, the noise reduction structure including a first noise reduction structure and a second noise reduction structure, the first noise reduction structure being located on the side wall of the dishwasher cavity, and the second noise reduction structure being located on the top and bottom surfaces of the dishwasher cavity.

[0013] Preferably, the troughs and peaks of the wave-like cross-section of the magnetic thin film constituting the first noise reduction structure are on the same horizontal plane.

[0014] Preferably, when the wavy troughs constituting the cross-section of the magnetic thin film in the second noise reduction structure are on the same horizontal plane, their peaks are not on the same horizontal plane; when the wavy peaks constituting the cross-section of the second noise reduction structure are on the same horizontal plane, their troughs are not on the same horizontal plane.

[0015] Preferably, when the troughs of the wave-like structure constituting the cross-section of the magnetic thin film in the second noise reduction structure are on the same horizontal plane, and the peaks are not on the same horizontal plane, the second noise reduction structure is located on the bottom surface of the dishwasher cavity, and the height of each peak of the wave-like structure decreases sequentially from the middle to both sides.

[0016] Preferably, when the wave-shaped peaks of the magnetic thin film cross-section constituting the second noise reduction structure are on the same horizontal plane, and their troughs are not on the same horizontal plane, the second noise reduction structure is located on the top surface of the dishwasher cavity, and the height of each wave-shaped trough decreases sequentially from the middle to both sides.

[0017] A noise reduction control method for reducing noise in the aforementioned dishwasher specifically includes the following steps:

[0018] S1, obtain the dishwasher's operating power;

[0019] S2, when the operating power is greater than or equal to the power threshold, the electromagnetic induction coils of the first noise reduction structure and the second noise reduction structure are energized.

[0020] Preferably, the electromagnetic induction coils of the first noise reduction structure and the second noise reduction structure are energized, specifically as follows:

[0021] S21, determine the frequency range of the current noise based on the dishwasher's operating power; wherein, the dishwasher has a preset correspondence between operating power and frequency range;

[0022] S22, apply current to the electromagnetic induction coil to drive the magnetic film to vibrate, and make the frequency of the magnetic film vibration within the frequency range of the current noise; wherein, the dishwasher has a preset correspondence between the current value and the vibration frequency of the magnetic film (11).

[0023] Compared with the prior art, in this invention, a magnetic thin film is covered on an electromagnetic induction coil. When the electromagnetic induction coil is energized, it drives the magnetic thin film to vibrate to absorb noise. Furthermore, the noise reduction structure in this invention can be applied to kitchen appliances, such as dishwashers, gas water heaters, and range hoods, which can significantly reduce the noise generated by kitchen appliances during operation and effectively improve the user experience. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a noise reduction structure provided in Embodiment 1 of the present invention;

[0025] Figure 2 This is a cross-sectional view of the magnetic thin film in the noise reduction structure provided in Embodiment 1 of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of a dishwasher provided in Embodiment 2 of the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of a dishwasher provided in Embodiment 2 of the present invention;

[0028] Figure 5 This is a schematic diagram of the bottom structure of a dishwasher provided in Embodiment 2 of the present invention;

[0029] Figure 6 This is a schematic diagram of the magnetic film in the first noise reduction structure of a dishwasher provided in Embodiment 2 of the present invention;

[0030] Figure 7 This is a schematic diagram of the magnetic film in the second noise reduction structure of a dishwasher provided in Embodiment 2 of the present invention;

[0031] Figure 8 This is a schematic diagram of the magnetic film in another position in the second noise reduction structure of a dishwasher provided in Embodiment 2 of the present invention;

[0032] Figure 9 This is a flowchart of a noise reduction control method provided in Embodiment 3 of the present invention.

[0033] Among them, 1. first noise reduction structure, 2. second noise reduction structure, 11. magnetic thin film, 12. electromagnetic induction coil, 111. arc shape. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0035] In the description of this invention, it should be clearly stated that the terms "vertical", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "horizontal", etc., which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] Example 1

[0038] Embodiment 1 of the present invention provides a noise reduction structure, which is applied to kitchen appliances, such as... Figure 1 As shown, it includes a magnetic thin film 11 and an electromagnetic induction coil 12, wherein the magnetic thin film 11 covers the electromagnetic induction coil 12; when the electromagnetic induction coil 12 is energized, it drives the magnetic thin film 11 to vibrate in order to absorb noise.

[0039] Thus, by adopting the above structure, the electromagnetic induction coil 12 drives the magnetic thin film 11 to vibrate after being energized, thereby achieving noise reduction. Furthermore, the noise reduction structure in this invention can be applied to kitchen appliances, such as dishwashers, gas water heaters, and range hoods, which can significantly reduce the noise generated by kitchen appliances during operation and effectively improve the user experience.

[0040] like Figure 2 As shown, the cross-section of the magnetic thin film 11 is wavy, formed by connecting at least two arcs 111, and the shape of the electromagnetic induction coil 12 matches the shape of the magnetic thin film 11.

[0041] In this way, the wave-shaped electromagnetic induction coil 12 generates a gradient magnetic field, which changes the pretension of the magnetic film 11, allowing the magnetic film 11 to absorb noise of different frequencies.

[0042] At least two of the arcs 111 have different diameters to absorb noise of different frequencies;

[0043] Specifically, the diameters of the two arcs 111 are r1 and r2, respectively. Figure 2 As can be seen, r1 and r2 are not equal, therefore, the lengths of the two arcs 111 are also not equal, and the areas of the corresponding magnetic films 11 are also different. In this way, noise of different magnitudes can be absorbed.

[0044] The diameter of the arc 111 is positively correlated with the noise level at the location of the arc 111;

[0045] Specifically, the louder the noise, the larger the diameter of the corresponding arc 111 should be, because different diameters of the arc 111 will result in different areas of the magnetic thin film 11. The larger the area, the easier it is to absorb noise.

[0046] This embodiment achieves noise reduction by combining a magnetic thin film and an electromagnetic induction coil. Furthermore, by limiting the shape and size of the magnetic thin film and the electromagnetic induction coil, the noise reduction structure can absorb noise of different frequencies and magnitudes.

[0047] In addition, the noise reduction structure in this embodiment can be applied to kitchen appliances such as dishwashers, range hoods, and gas water heaters, which can significantly reduce the noise generated when kitchen appliances are working, solve the problem of excessive noise generated when kitchen appliances are working, and effectively enhance the product competitiveness of kitchen appliances such as dishwashers, range hoods, and gas water heaters.

[0048] Example 2

[0049] Embodiment 2 of the present invention provides a dishwasher, which includes the noise reduction structure described in Embodiment 1, such as... Figure 3-5 As shown, the noise reduction structure includes a first noise reduction structure 1 and a second noise reduction structure 2. The first noise reduction structure 1 is located on the side wall of the dishwasher cavity, and the second noise reduction structure 2 is located on the top and bottom surfaces of the dishwasher cavity.

[0050] The significance of doing this is that the noise distribution on the side wall of the dishwasher is relatively uniform, so the same type of noise reduction structure can be used;

[0051] The top and bottom surfaces of dishwashers are usually equipped with motors or rotating spray arms, which are noisier than the side walls. Therefore, the top and bottom surfaces adopt a different type of noise reduction structure.

[0052] Specifically, the number of the first noise reduction structure 1 is related to the shape of the dishwasher. If the dishwasher is a cuboid structure, then four of the first noise reduction structures 1 are provided.

[0053] like Figure 6 As shown, the wavy troughs and peaks of the magnetic thin film 11 that constitute the cross-section of the first noise reduction structure 1 are on the same horizontal plane.

[0054] like Figure 7-8As shown, when the wavy troughs of the magnetic thin film 11 constituting the second noise reduction structure 2 are on the same horizontal plane, their peaks are not on the same horizontal plane; when the wavy peaks of the cross-section of the second noise reduction structure 2 are on the same horizontal plane, their troughs are not on the same horizontal plane.

[0055] like Figure 7 As shown, when the wavy troughs of the magnetic thin film 11 forming the cross-section of the second noise reduction structure 2 are on the same horizontal plane, and their peaks are not on the same horizontal plane, the second noise reduction structure 2 is located on the bottom surface of the dishwasher cavity, and the height of each wave peak decreases sequentially from the middle to both sides.

[0056] In this way, the peak height is the highest at the center, and the corresponding area of ​​the magnetic film 11 is also the largest. The center is also the place with the most noise. Increasing the area of ​​the magnetic film 11 can improve the noise reduction effect.

[0057] Furthermore, it should be noted that the height of the wave peak decreases from the middle to both sides, which is consistent with the distribution pattern of noise.

[0058] like Figure 8 As shown, when the wave-shaped peaks of the magnetic thin film 11 forming the cross-section of the second noise reduction structure 2 are on the same horizontal plane, and their troughs are not on the same horizontal plane, the second noise reduction structure 2 is located on the top surface of the dishwasher cavity, and the height of each wave-shaped trough decreases sequentially from the middle to both sides.

[0059] In this way, the height of the trough at the center is the highest, and the area of ​​the corresponding magnetic film 11 is also the largest. The center is also the place with the most noise. Increasing the area of ​​the magnetic film 11 can improve the noise reduction effect.

[0060] Furthermore, it should be noted that the height of the troughs decreases from the middle to both sides, which is consistent with the distribution pattern of noise.

[0061] Example 3

[0062] Embodiment 3 of the present invention provides a noise reduction control method for reducing noise in the dishwasher described in Embodiment 2, such as... Figure 9 As shown, the specific steps include the following:

[0063] S1, obtain the dishwasher's operating power;

[0064] Specifically, it is used to select the operating level of the dishwasher as needed;

[0065] Generally, when there are many dishes to wash, you can choose the high setting, which corresponds to a higher power output; conversely, you can choose the low setting.

[0066] S2, when the working power is greater than or equal to the power threshold, the electromagnetic induction coils 12 of the first noise reduction structure 1 and the second noise reduction structure 2 are energized;

[0067] Generally, the working power of a dishwasher at its low setting is less than 600W, while the working power at its medium to high setting is greater than 600W. Therefore, the power threshold is set to 600W.

[0068] In a specific embodiment, the electromagnetic induction coils 12 of the first noise reduction structure 1 and the second noise reduction structure 2 are energized, specifically as follows:

[0069] S21, the frequency range of the current noise is determined according to the working power of the dishwasher; the dishwasher has a preset correspondence between working power and frequency range; wherein, the dishwasher has a preset correspondence between working power and frequency range.

[0070] S22, apply current to the electromagnetic induction coil 12 to drive the magnetic film 11 to vibrate, and reduce the frequency of the magnetic film 11 vibration to within the frequency range of the current noise; wherein, the dishwasher has a preset correspondence between the current value and the frequency of the magnetic film 11 vibration.

[0071] In this embodiment, the electromagnetic induction coil 12 is not energized when the operating power is less than 600W.

[0072] In addition, the method also includes: S3, after the dishwasher finishes working, the electromagnetic induction coil is turned off and the applied current is stopped, and the noise reduction ends.

[0073] This embodiment achieves an effective noise reduction effect without wasting energy by corresponding and adjusting the dishwasher's current operating power, noise frequency range, and the current applied to the electromagnetic induction coil in real time.

[0074] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A noise reduction control method, characterized by, It is used for reducing noise of a dishwasher, the dishwasher comprising a noise reduction structure, the noise reduction structure comprising a magnetic film (11) and an electromagnetic induction coil (12), the magnetic film (11) covering on the electromagnetic induction coil (12); the electromagnetic induction coil (12) drives the magnetic film (11) to vibrate to absorb noise after being electrified; the cross section of the magnetic film (11) is wave-shaped formed by at least two arc shapes (111) connected, and the shape of the electromagnetic induction coil (12) matches the shape of the magnetic film (11); the diameters of the at least two arc shapes (111) are different for absorbing noise of different frequencies; the noise reduction structure further comprises a first noise reduction structure (1) and a second noise reduction structure (2); The control method specifically comprises the following steps: S1, acquiring the working power of the dishwasher; S2, when the working power is greater than or equal to the power threshold, electrifying the electromagnetic induction coil (12) of the first noise reduction structure (1) and the second noise reduction structure (2).

2. The noise reduction control method of claim 1, wherein, The electrification of the electromagnetic induction coil (12) of the first noise reduction structure (1) and the second noise reduction structure (2) is specifically: S21, corresponding the frequency range of the current noise according to the working power of the dishwasher; wherein, the dishwasher is pre-provided with a corresponding relationship between the working power and the frequency range; S22, applying current to the electromagnetic induction coil (12) to drive the magnetic film (11) to vibrate, and the frequency of the vibration of the magnetic film (11) is within the frequency range of the current noise; wherein, the dishwasher is pre-provided with a corresponding relationship between the current value of the current and the frequency of the vibration of the magnetic film (11).

3. The noise reduction control method according to claim 1 or 2, characterized in that, The diameter of the arc shape (111) is positively correlated with the noise size of the position where the arc shape (111) is located.

4. The noise reduction control method of claim 3, wherein, The first noise reduction structure (1) is located on the side wall of the inner cavity of the dishwasher, and the second noise reduction structure (2) is located on the top surface and the bottom surface of the inner cavity of the dishwasher.

5. The noise reduction control method of claim 4, wherein, The wave trough and the wave crest of the wave shape constituting the cross section of the magnetic film (11) in the first noise reduction structure (1) are in the same horizontal plane.

6. The noise reduction control method of claim 5, wherein, When the wave trough of the wave shape constituting the cross section of the magnetic film (11) in the second noise reduction structure (2) is in the same horizontal plane, the wave crest is not in the same horizontal plane; when the wave crest of the wave shape constituting the cross section of the second noise reduction structure (2) is in the same horizontal plane, the wave trough is not in the same horizontal plane.

7. The noise reduction control method of claim 6, wherein, When the wave trough of the wave shape constituting the cross section of the magnetic film (11) in the second noise reduction structure (2) is in the same horizontal plane, the wave crest is not in the same horizontal plane, the second noise reduction structure (2) is located on the bottom surface of the inner cavity of the dishwasher, and the height of each wave crest of the wave shape decreases from the middle to both sides in turn.

8. The noise reduction control method of claim 6, wherein, When the wave crest of the wave shape constituting the cross section of the magnetic film (11) in the second noise reduction structure (2) is in the same horizontal plane, the wave trough is not in the same horizontal plane, the second noise reduction structure (2) is located on the top surface of the inner cavity of the dishwasher, and the height of each wave trough of the wave shape decreases from the middle to both sides in turn.

Images