CN218074675U - A sound-absorbing structure, lid subassembly, frame and cooking machine for cooking machine - Google Patents

Abstract

The utility model relates to a life electrical apparatus technical field provides a noise cancelling structure, lid subassembly, frame and cooking machine for cooking machine. The silencing structure for the food processor comprises a first side wall and a second side wall, wherein the second side wall is positioned on the outer side of the first side wall and forms at least one of a first silencing cavity and a second silencing cavity together with the first side wall; the first silencing cavity is constructed by the silencing structure, and a first through hole communicated with the first silencing cavity is formed in the first side wall; the silencing structure constructs the second silencing cavity, the first side wall is provided with a second through hole communicated with the second silencing cavity, and the second side wall is provided with a third through hole communicated with the second silencing cavity. The utility model provides an acoustic structure for cooking machine utilizes the amortization chamber to eliminate the noise and fall and make an uproar, simple structure, and convenient processing, noise elimination and noise reduction effect is good, still helps reducing acoustic structure's thickness, helps saving space.

Description

A sound-absorbing structure, lid subassembly, frame and cooking machine for cooking machine

Technical Field

The utility model relates to a life electrical apparatus technical field especially relates to a noise cancelling structure, lid subassembly, frame and cooking machine for cooking machine.

Background

When the food processor works, the food processor needs to stir, crush, heat and the like materials in the food processor, so that the food materials are processed. During operations such as stirring, crushing and the like, processing noise can be generated, and airflow in the food processor can be disturbed; when the materials are heated and boiled, the boiling of the serous fluid also generates larger noise. Therefore, in the working process of the food processor, the noise of the food processor is large due to various factors, and the user experience is influenced.

Among the correlation technique, broken wall cooking machine is at the course of the work, and the motor vibration takes place the vibration under the exciting force effect, and the structure surface of vibration can the radiation noise, and the noise can influence the user and use experience.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve at least one of the technical problems existing in the related art. Therefore, the utility model provides an acoustic structure for cooking machine utilizes the amortization chamber to eliminate the noise and fall and make an uproar, simple structure, and convenient processing, noise elimination and noise reduction effect is good, still helps reducing acoustic structure's thickness, helps realizing cooking machine's miniaturization, saves space.

The utility model discloses still provide a lid subassembly.

The utility model discloses still provide a frame.

The utility model also provides a cooking machine.

According to the utility model discloses a noise cancelling structure for cooking machine of first aspect embodiment, include:

a first side wall;

the second side wall is positioned at the outer side of the first side wall and forms at least one of a first silencing cavity and a second silencing cavity together with the first side wall;

the first silencing cavity is constructed by the silencing structure, and a first through hole communicated with the first silencing cavity is formed in the first side wall;

the silencing structure constructs the second silencing cavity, the first side wall is provided with a second through hole communicated with the second silencing cavity, and the second side wall is provided with a third through hole communicated with the second silencing cavity.

According to the utility model discloses lid subassembly, including first lateral wall and second lateral wall, form at least one in first amortization chamber and the second amortization chamber between first lateral wall and the second lateral wall, first lateral wall is provided with the first through-hole that communicates with first amortization chamber for the cooperation of first through-hole and first amortization chamber utilizes resonance noise elimination principle to carry out noise elimination and noise reduction; when first lateral wall be provided with the second through-hole of second amortization chamber intercommunication, the second lateral wall is provided with the third through-hole with second amortization chamber intercommunication, and the cooperation of second through-hole, second amortization chamber and third through-hole is carried out the noise elimination and is fallen the noise through the expansion noise elimination principle, simple structure, convenient processing, noise elimination and noise reduction effect is good, still helps reducing noise elimination structure's thickness, helps realizing the miniaturization of cooking machine, saves space.

According to the utility model discloses an embodiment, first through-hole with in the second through-hole at least one, aperture less than or equal to 1mm, open porosity more than or equal to 1% and less than or equal to 5%.

According to the utility model discloses an embodiment, first lateral wall is the metal sheet, the thickness less than or equal to 1mm of first lateral wall.

According to the utility model discloses an embodiment, first through-hole with at least one in the second through-hole, the aperture is greater than 1mm, and the percent opening is less than or equal to 20%.

According to the utility model discloses an embodiment, the longitudinal section area of second amortization chamber with the ratio more than or equal to 2, and less than or equal to 10 of the longitudinal section area of second through-hole.

According to an embodiment of the present invention, a first distance between adjacent first through holes is greater than or equal to 2 times of the aperture of the first through hole;

and/or a second distance between adjacent second through holes is more than or equal to 2 times of the aperture of the second through holes;

and/or a third distance between the adjacent first through holes and the second through holes is more than or equal to 2 times of the aperture of the first through holes or the second through holes;

and/or a fourth distance between adjacent third through holes is more than or equal to 2 times of the aperture of the third through hole.

According to the utility model discloses an embodiment, be provided with sound absorbing component in at least one in first amortization chamber with the second amortization chamber.

According to an embodiment of the present invention, the sound-attenuating structure is a closed-loop structure and is configured with a first opening for connecting the cover and a second opening for connecting the base, the second opening being located below the first opening;

or the silencing structure is an open-loop structure and is provided with a connecting part suitable for being connected with the base.

According to the utility model discloses lid subassembly of second aspect embodiment, including the lid and as above arbitrary one be used for cooking machine's noise-abatement structure, noise-abatement structure be closed loop structure and be constructed with first opening and be used for the second opening of being connected with the frame, the lid connect in first opening part.

According to the utility model discloses lid subassembly, including lid and noise-abatement structure, noise-abatement structure connects in the lid for noise elimination and noise reduction are carried out for connecting in the fuselage of frame to at least one mode in noise abatement, the expansion noise abatement through resonance to noise-abatement structure.

According to the utility model discloses an embodiment, sound-attenuating structure has been seted up second open-ended one end is provided with grafting portion.

According to the utility model discloses frame of third aspect embodiment, including the frame body with as above arbitrary one be used for cooking machine's noise-abatement structure, noise-abatement structure and frame body integrated into one piece or detachable connection.

According to the utility model discloses the frame, including frame body and noise-abatement structure, noise-abatement structure connects in the frame body for at least one mode in noise-abatement structure through resonance, expansion noise abatement is for connecting the fuselage of frame and eliminating noise and fall the noise, still can eliminate noise and fall the noise for the frame body.

According to the utility model discloses cooking machine of fourth aspect embodiment, include the fuselage and as above arbitrary one be used for cooking machine's noise-abatement structure, the fuselage forms the cooking chamber, noise-abatement structure encloses at least to be established the local area's of fuselage the outside.

According to the utility model discloses cooking machine, including fuselage and noise-abatement structure, the accessible sets up the noise elimination part in the fuselage outside, for the fuselage eliminates the noise and falls and make an uproar, and cooking machine's noise elimination noise reduction effect is better, helps optimizing cooking machine's user experience.

According to the utility model discloses an embodiment, first lateral wall with the distance more than or equal to 2mm, less than or equal to 15mm of fuselage.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic longitudinal sectional structural view of a first noise-damping structure for a food processor provided in an embodiment of the present invention, the noise-damping structure is provided with a first noise-damping cavity;

fig. 2 is a schematic structural diagram of a rear side of a first noise elimination structure for a food processor provided in an embodiment of the present invention, the noise elimination structure is provided with a first noise elimination cavity;

fig. 3 is a schematic longitudinal sectional structural view of a second noise elimination structure for a food processor provided in the embodiment of the present invention, the noise elimination structure is provided with a second noise elimination cavity;

fig. 4 is a schematic structural diagram of a rear side of a second noise elimination structure for a food processor, provided by the embodiment of the present invention, the noise elimination structure is provided with a second noise elimination cavity;

fig. 5 is a schematic longitudinal sectional view of a third silencing structure for a food processor provided in an embodiment of the present invention, the silencing structure is provided with a first silencing cavity and a second silencing cavity;

fig. 6 is a schematic rear side structure view of a third silencing structure for a food processor provided in an embodiment of the present invention, in which the silencing structure is provided with a first silencing cavity and a second silencing cavity;

fig. 7 is a schematic diagram of a first muffling chamber provided by an embodiment of the present invention and related parameters are labeled;

fig. 8 is a schematic diagram of a second muffling chamber provided by an embodiment of the present invention and labeled with relevant parameters;

fig. 9 is a schematic longitudinal sectional view of a fourth noise elimination structure for a food processor provided in the embodiment of the present invention, in which the noise elimination structure is provided with a first noise elimination cavity, and the aperture of the first through hole is smaller than or equal to 1mm;

fig. 10 is a schematic rear side structure view of a fourth noise elimination structure for a food processor according to an embodiment of the present invention, in which the noise elimination structure is provided with a first noise elimination cavity, and the aperture of the first through hole is smaller than or equal to 1mm;

fig. 11 is a schematic structural diagram of a cover assembly according to an embodiment of the present invention, in which the cover assembly is provided with a sound-deadening structure, and the sound-deadening structure is provided with a first sound-deadening chamber;

fig. 12 is a schematic structural diagram of a food processor according to an embodiment of the present invention; the food processor is provided with a cover component;

fig. 13 is a schematic view of an inner side structure of a first base according to an embodiment of the present invention; the silencing structure is provided with a first silencing cavity and a second silencing cavity;

fig. 14 is an outer side structural schematic view of a first base according to an embodiment of the present invention; the silencing structure is provided with a first silencing cavity and a second silencing cavity;

fig. 15 is an inner side structure schematic view of a second machine base provided by the embodiment of the present invention; the silencing structure is provided with a first silencing cavity;

fig. 16 is an outer side structural schematic view of a second base according to an embodiment of the present invention; the silencing structure is provided with a first silencing cavity;

fig. 17 is a schematic structural diagram of the food processor provided by the embodiment of the utility model, the food processor is provided with a frame with a noise elimination structure.

Reference numerals:

100. a noise elimination structure; 110. a first side wall; 111. a first through hole; 112. a second through hole; 120. a second side wall; 121. a third through hole; 130. a first muffling chamber; 140. a second muffling chamber; 150. a first opening; 160. a second opening; 170. a plug-in part; 180. a sound absorbing member;

200. a cover body; 300. a machine base body; 400. a fuselage.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are provided to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, the terms "plurality", and "plural" mean two or more unless otherwise specified.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Referring to fig. 1 to 10, a schematic structural diagram of a noise elimination structure 100 for a food processor is illustrated; fig. 11 illustrates a structural schematic view of the cover assembly with the sound attenuating structure 100 for the food processor; fig. 12 illustrates a schematic structural diagram of a food processor with a sound attenuation structure 100; fig. 13 to 16 illustrate a housing with a sound attenuating structure 100; fig. 17 illustrates a schematic structural diagram of another food processor with a sound attenuation structure 100.

The silencing structure 100 for the food processor can be a structure independently installed on the food processor, such as a structure detachably connected to a silencing cover of the food processor, and a structure detachably connected to a silencing wall of the food processor; or, the integrated structure of parts of noise-abatement structure 100 and cooking machine, if noise-abatement structure 100 is connected the structure of noise abatement cover as an organic whole with lid 200, noise-abatement structure 100 is connected the structure of noise abatement wall as an organic whole with the frame, certainly, noise-abatement structure 100 can also be for other structural style, and noise-abatement structure 100's structure is various, can be used to reduce the noise of cooking machine, improves cooking machine's use and experiences. Referring to fig. 1 to 10, there is provided a noise-attenuating structure 100 of a noise-attenuating cover connected between a cover 200 and a housing, and fig. 13 to 16 illustrate the noise-attenuating structure 100 of a noise-attenuating wall integrally formed with the housing.

The embodiment of the first aspect of the present invention, as shown in fig. 1 to 10 and 13 to 16, provides a sound-damping structure 100 for food processor, including first side wall 110 and second side wall 120, second side wall 120 is located the outside of first side wall 110, at least one of first sound-damping chamber 130 and second sound-damping chamber 140 is constructed with first side wall 110 by second side wall 120, first sound-damping chamber 130 and second sound-damping chamber 140 all play the effect of noise reduction and noise reduction, the silencing principle of first sound-damping chamber 130 and second sound-damping chamber 140 is different, so that the frequency range of noise damping is bigger, and the noise of each frequency band is fully silenced.

The sound-deadening structure 100 may be provided with one or more first sound-deadening chambers 130, the sound-deadening structure 100 may be provided with one or more second sound-deadening chambers 140, and the number of the first sound-deadening chambers 130 and the number of the second sound-deadening chambers 140 may be set as desired.

The second side wall 120 is located outside the first side wall 110, and it can be understood that when the sound attenuating structure 100 for the food processor is installed on the food processor, the first side wall 110 faces the machine body 400, and the second side wall 120 faces the outside environment. The first side wall 110 is connected to the second side wall 120, so that a sound-deadening chamber (at least one of the first sound-deadening chamber 130 and the second sound-deadening chamber 140) is formed between the first side wall 110 and the second side wall 120, that is, the first sound-deadening chamber 130, the second sound-deadening chamber 140, and both the first sound-deadening chamber 130 and the second sound-deadening chamber 140 may be formed between the first side wall 110 and the second side wall 120.

As shown in fig. 1, 2, 15 and 16, when the first muffling chamber 130 is formed in the muffling structure 100, the first sidewall 110 is provided with a first through hole 111 communicating with the first muffling chamber 130, so that the first muffling chamber 130 performs muffling and noise reduction according to the resonance muffling principle.

The first through holes 111 are formed in the first side wall 110, and an air layer is formed in the first muffling cavity 130 between the first side wall 110 and the second side wall 120, so that a resonant sound absorbing structure can be formed, and since the back of each first through hole 111 is provided with the corresponding first muffling cavity 130, the muffling structure 100 forms one or more helmholtz resonators (when the muffling structure 100 is provided with the plurality of first muffling cavities 130, a plurality of parallel helmholtz resonators can be formed). Noise that produces in the cooking machine operation process, when the resonant frequency of incident sound wave frequency and system is unanimous, the air that the sound wave passed first through-hole 111 produces vibration friction, and first amortization chamber 130 utilizes helmholtz resonance's principle, has strengthened the absorption effect, has formed the absorption peak, makes sound energy show the decay until keeping away from resonant frequency, then the absorption is less. The first muffling chamber 130 inside the muffling structure 100 is a resonant cavity that absorbs a portion of the sound energy, thereby reducing the noise.

As shown in fig. 3 and 4, when the muffling structure 100 constructs the second muffling chamber 140, the first sidewall 110 is provided with a second through hole 112 communicated with the second muffling chamber 140, the second sidewall 120 is provided with a third through hole 121 communicated with the second muffling chamber 140, an air layer is formed in the second muffling chamber 140, the second through hole 112, the second muffling chamber 140, and the third through hole 121 can form an expanded muffling structure, and the longitudinal cross-sectional areas of the second through hole 112 and the third through hole 121 are smaller than that of the second muffling chamber 140, so as to attenuate noise according to the emission of sound waves at the abrupt change (expansion or contraction) of the cross-section.

Here, the longitudinal sectional area may be understood as a sectional area perpendicular to the depth direction of the second through hole 112 (or the first through hole 111) and may also be understood as a sectional area perpendicular to the sound propagation direction.

As shown in fig. 5, 6, 13, and 14, when the muffling structure 100 simultaneously forms the first muffling chamber 130 and the second muffling chamber 140, the muffling structure 100 can simultaneously perform muffling and noise reduction according to the principles of resonance muffling and expansion muffling, and can also expand the range of muffling sound waves, so that the muffling effect is better.

When the muffling structure 100 is provided with the first muffling cavity 130 and the second muffling cavity 140 at the same time, the first muffling cavity 130 is used for resonance muffling, and is suitable for narrow-frequency muffling, the muffling amount is high, and the second muffling cavity 140 is used for expansion muffling, and is suitable for broadband muffling, and the muffling amount is low. Whether the sound attenuating structure 100 is a sound attenuating cover or wall, one of the functions of the sound attenuating structure 100 is to utilize a sound barrier to block direct sound, isolate transmitted sound, and provide sufficient attenuation of diffracted sound.

Above-mentioned the utility model discloses sound-attenuating structure 100 has increased sound at sound-attenuating structure 100 internal reflection, has changed the direction of sound propagation (change the direct user of sound), and the inside first amortization chamber 130 of sound-attenuating structure 100 and second amortization chamber 140 have the ability of absorbing partial sound wave to the noise reduction.

Under equal noise cancelling effect, adopt the mode of lateral wall sound insulation, the wall thickness often is greater than 4mm, the utility model discloses an embodiment, the amortization chamber (including at least one in first amortization chamber 130 and the second amortization chamber 140) that utilizes the sound-attenuating structure 100 to form is eliminated the noise and is fallen, can reduce the thickness of first lateral wall 110 and second lateral wall 120, and then reduce the weight of sound-attenuating structure 100, still can reduce material cost, can reach better noise reduction, solve the problem that the thickness through increasing the lateral wall comes the noise reduction.

Referring to fig. 7, the muffling amount TL of the first muffling chamber 130 is calculated as follows:

TL＝10lg(1+2K ² )；

wherein TL is the noise elimination amount, and k is a calculation parameter; v is the cavity volume of the first muffling chamber 130, G is the air flow, and S is the orifice longitudinal cross-sectional area of the first through-hole 111.

Wherein f is the noise elimination frequency; c is the sound velocity, S is the longitudinal cross-sectional area of the orifice of the first through hole 111, V is the cavity volume of the first muffling chamber 130, L is the resonant pipe length (i.e., the depth of the first through hole 111), and pi is a constant, and may be 3.14. Therefore, the structure of the first muffling cavity 130 belongs to a narrow-band muffler, and when broadband muffling is performed, the plurality of first muffling cavities 130 need to work together.

It should be noted that the first sound-deadening chamber 130 in fig. 7 is illustrated as a sphere, but the shape of the first sound-deadening chamber 130 may be, but is not limited to, a sphere, and may also be a rectangle, a ring, etc., and the shape of the first sound-deadening chamber 130 is related to the shapes of the first sidewall 110 and the second sidewall 120.

Referring to fig. 8, the muffling amount Δ L of the second muffling chamber 140 is calculated as follows:

where m is the expansion ratio or expansion ratio of the second muffling chamber 140,

S ₁ is the longitudinal cross-sectional area, S, of the second through-hole 112 ₂ Is the longitudinal cross-sectional area of the second muffling chamber 140; k is the wave number of the sample,

the change of the k value is equivalent to the frequency change, lambda is the frequency of the sound wave, and pi is a constant and can be 3.14; l is the length of the second sound-deadening chamber 140 in m.

Next, the acoustic structure 100 will be explained. The sound-deadening structure 100 described below is provided with the first through-hole 111, and may be provided with only the first through-hole 111, and may also be provided with both the first through-hole 111 and the second through-hole 112, and similarly, the sound-deadening structure 100 is provided with the second through-hole 112, may be provided with only the second through-hole 112, and may also be provided with both the first through-hole 111 and the second through-hole 112.

Referring to fig. 9 and 10, when the muffler structure 100 is provided with the first through-hole 111 having a hole diameter of 1mm or less, the opening ratio is 1% or more and 5% or less. When the silencing structure 100 is provided with the second through hole 112, the hole diameter is less than or equal to 1mm, and the opening rate is greater than or equal to 1% and less than or equal to 5%.

When the aperture of at least one of first through-hole 111 and second through-hole 112 is less than or equal to 1mm, can understand that, at least one through-hole that first lateral wall 110 was seted up is a micropore structure, utilizes the micropore principle to reduce the noise of cooking machine, improves cooking machine's use and experiences. The inner side of the double-layer sound-absorbing structure 100 formed by the first side wall 110 and the second side wall 120 is provided with micropores, and the micropores and air form at least one of a resonance sound-absorbing structure and an expansion sound-absorbing structure, so that noise is reduced.

The first through hole 111 and the second through hole 112 may be circular holes, square holes, triangular holes, or other irregularly shaped holes, and when at least one of the first through hole 111 and the second through hole 112 is a non-circular hole, the hole diameter may be understood as the hole diameter of an inscribed circle or a circumscribed circle.

The aperture ratio is the ratio of the aperture area to the total area, and is 1% -5%, so as to ensure the muffling effect of the first muffling cavity 130 and the second muffling cavity 140.

When the aperture of at least one of the first through hole 111 and the second through hole 112 is less than or equal to 1mm, the micro-holes are utilized to eliminate noise, the structure is simple, the cleaning is easy, the high temperature resistance is realized, and the device is suitable for special environments such as high-speed airflow, high temperature or humidity. When the silencing structure 100 is a silencing cover, the aperture of at least one of the first through hole 111 and the second through hole 112 is smaller than or equal to 1mm, and the micro-hole silencing is combined with a closed cover body structure, so that the silencing effect is better, and the noise of the food processor can be obviously reduced. Of course, when the sound-deadening structure 100 is a sound-deadening wall, a structure of sound-deadening with micro-pores may be adopted, and the structure may be specifically selected according to the requirement.

When the aperture of at least one of the first through hole 111 and the second through hole 112 is smaller than or equal to 1mm, the first sidewall 110 is a metal plate, and the thickness of the first sidewall 110 is smaller than or equal to 1mm. By utilizing the principle of micro-hole noise elimination, the sound absorption frequency band can be widened, a resonance sound absorption structure is formed by a thin metal plate with the thickness and the aperture being less than 1mm and the perforation rate being 1% -5% and an air layer on the outer side of the first side wall 110, the perforated plate has large sound resistance and small sound quality due to fine perforation, the ratio of sound shade to sound quality is greatly improved, and the sound absorption structure can be a good sound absorption structure without adding sound absorption materials, at the moment, the first side wall 110 can be understood as a micro-perforated plate.

The first sidewall 110 can be etched by chemical materials to form the first through hole 111, so that the processing method is simple and convenient, the processing efficiency is high, and the cost is reduced. In this case, the second sidewall 120 may be a metal plate, a plastic plate, or a plate made of other materials. Of course, the first through hole 111 and the second through hole 112 may be obtained by other methods.

In another case, unlike the above-described structural dimensions, at least one of the first through-hole 111 and the second through-hole 112 has a hole diameter of more than 1mm and an opening ratio of 20% or less. That is, at least one of the first through hole 111 and the second through hole 112 is not a micro-porous structure, and the opening ratio of the through hole at the hole diameter is different from that of the micro-porous structure, so that the noise elimination and reduction effects can be ensured.

When at least one of the first through hole 111 and the second through hole 112 has a hole diameter larger than 1mm, when the muffling structure 100 is an open-loop muffling wall, the number of the open holes of the first side wall 110 can be reduced, which is convenient for the first side wall 110 to be cleaned, and also makes the appearance integrity of the first side wall 110 stronger, and reduces the influence of the through holes on the visual effect of the user. Certainly, the silencing structure 100 is a closed-loop silencing cover, and the first through hole 111 and the second through hole 112 are hidden in the silencing cover, so that the visual effect of the silencing cover is not affected, and the cleaning is convenient.

The first through hole 111 and the second through hole 112 both have a hole diameter larger than 1mm, the first sidewall 110 may be a metal plate, a plastic plate, or a plate made of other materials, and the material of the first sidewall 110 is not limited.

It can also be understood that the ratio of the longitudinal cross-sectional area of the second sound-deadening chamber 140 to the longitudinal cross-sectional area of the second through hole 112 is greater than or equal to 2 and less than or equal to 10, so as to ensure the sound-deadening and noise-reducing effects.

The ratio of the longitudinal section area of the first muffling cavity 130 to the longitudinal section area of the first through hole 111 is related to the muffling and denoising frequency band, and different ratios correspond to different muffling frequency bands, so that the range of the ratio can be selected according to the frequency band distribution condition of noise.

It can be understood that the first distance between the adjacent first through holes 111 is greater than or equal to 2 times the aperture of the first through holes 111 to ensure the noise elimination and reduction effect.

It can be understood that the second distance between the adjacent second through holes 112 is greater than or equal to 2 times the diameter of the second through holes 112, so as to ensure the noise elimination and reduction effects.

It can be understood that the third distance between the adjacent first through holes 111 and the second through holes 112 is greater than or equal to 2 times of the aperture of the first through holes 111 or the second through holes 112, so as to ensure the noise elimination and reduction effect.

The third distance is greater than or equal to 2 times of the larger aperture of the first through hole 111 and the second through hole 112.

It can be understood that the fourth distance between adjacent third through holes 121 is greater than or equal to 2 times the aperture of the third through holes 121, so as to ensure the silencing and noise reduction effects.

It should be noted that the apertures of the third through hole 121 and the second through hole 112 may be the same or different, and specifically may be set as required, and the third through hole 121 and the second through hole 112 may be coaxially set.

It should be noted that at least one of the first distance, the second distance, the third distance, and the fourth distance may be 5 times the aperture of the corresponding through hole, and the noise elimination and reduction effect may also be ensured.

It is understood that the sound absorbing member 180 is disposed in at least one of the first sound-deadening chamber 130 and the second sound-deadening chamber 140, and the sound absorbing member 180 may be made of a porous sound-absorbing material to increase the sound resistance, so that the frequency band of the absorbable sound waves is widened, and the problem of too small sound resistance of the separate sound-deadening chambers can be solved.

When the sound absorbing member 180 is provided with two or more layers, the requirement of absorbing sound waves with different frequencies can be met, such as a double-layer or multi-layer combined structure. Wherein, sound absorbing member 180 can be for inhaling sound cotton, porous plate isotructure, and sound absorbing member 180's thickness is as little as possible, and weight is light as far as possible, when guaranteeing noise elimination and noise reduction effect for noise elimination structure 100's thickness is as little as possible, and light in weight to reduce noise elimination structure 100's volume and weight and cooking machine's volume and weight.

It can be understood that, referring to fig. 1 to 12, the sound-deadening structure 100 is a closed loop structure and is configured with a first opening 150 for connecting the cover body 200 and a second opening 160 for connecting the base, and the second opening 160 is located below the first opening 150, and at this time, the sound-deadening structure 100 can cover and buckle the outer side of the body 400 (such as a cooking cup) to perform the functions of sound-deadening and noise reduction as well as protection of the body 400.

The closed-loop structure may be understood as that the sound-deadening structure 100 is matched with the cover 200 and the base to enclose the body 400 in a closed environment, and noise is reduced by using the dual functions of sound insulation and sound deadening. The first opening 150 is hermetically connected with the cover 200 through a gasket, and the second opening 160 is also hermetically connected with the base through a gasket, so that the body 400 is ensured to be in a closed sound-proof environment.

It will also be appreciated that, with reference to fig. 13 to 16, the sound attenuating structure 100 is an open-loop structure and is configured with a connecting portion adapted to be connected with the housing, and the connecting portion can be connected with the housing by snapping, inserting, magnetic attraction, etc.

In some cases, the sound attenuation structure 100 is connected to the housing body 300 as an integral structure, the first side wall 110 and the inner side wall of the housing body 300 are formed as a plate, and the second side wall 120 and the outer side wall of the housing body 300 are formed as a plate, so that the number of parts of the housing can be reduced, and the structure can be simplified.

When the sound attenuating structure 100 is a closed-loop structure,the first sidewall 110 and the second sidewall 120 may have a relatively high areal density, typically greater than 15kg/m ² The first side wall 110 and the second side wall 120 are made of a material that does not leak sound, so that the sound insulation amount of the noise cancellation structure 100 is greater than the additional attenuation amount generated by diffraction by more than 10dB, and thus the transmitted sound passing through the first side wall 110 and the second side wall 120 can be ignored, and only the diffraction effect is considered.

In the above embodiment, the first muffling chamber 130 muffles the noise at a frequency of 1000-5000Hz, and the second muffling chamber 140 muffles the noise at a frequency of 800-5000Hz, both of which achieve wide-frequency muffling.

Embodiments of the second aspect of the present invention, as shown in fig. 11 and 12, provide a cover assembly, which includes a cover body 200 and the sound attenuating structure 100 for a food processor in any one of the above embodiments, the sound attenuating structure 100 is a closed-loop structure and is configured with a first opening 150 and a second opening 160 for connecting with a machine base, and the cover body 200 is connected to the first opening 150. The noise elimination structure 100 has the above-mentioned advantages, and the cover assembly has the above-mentioned advantages, which can be referred to above specifically, and are not described herein again.

The sound attenuating structure 100 may be detachably coupled or fixedly coupled to the cover body 200. When the sound-deadening structure 100 is detachably connected with the cover body 200, the cover body 200 can be independently covered on the body 400, so that the cover body 200 can be conveniently opened and closed; when the sound attenuation structure 100 is fixedly connected with the cover body 200, the sound attenuation structure 100 and the cover body 200 are integrated into a single part, so that the number of parts can be reduced.

It can be understood that the end of the muffling structure 100, at which the second opening 160 is formed, is provided with the inserting portion 170, and the muffling structure 100 is inserted into the base, so that the inserting mode is simple and convenient to operate, simple in structure, and convenient to process. A sealing gasket is arranged between the inserting part 170 and the machine base, the sealing gasket has elasticity, the sealing gasket can buffer the vibration of the machine base, and the installation stability of the noise elimination component on the machine base is improved.

It should be noted that the sound attenuation structure 100 may also be an open-loop structure connected to the cover body 200, and the sound attenuation structure 100 may be arranged in a local area outside the body 400, for example, a local area of the sound attenuation structure 100 may be provided with an opening for ventilation, or an area of the sound attenuation structure 100 surrounding a half of the body 400 in the outer periphery of the body 400, or an area of the sound attenuation structure 100 surrounding a half of the body 400 in the height direction thereof, or the like.

The embodiment of the third aspect of the present invention, as shown in fig. 13 to 16, provides a frame, which includes a frame body 300 and the sound attenuating structure 100 for a food processor in any one of the embodiments, wherein the sound attenuating structure 100 is integrally formed with the frame body 300 or detachably connected to the frame body 300. The noise elimination structure 100 has the above-mentioned beneficial effects, and the engine base has the above-mentioned beneficial effects, which can be referred to specifically, and will not be described herein again.

The muffling structure 100 may be an open-loop structure or a closed-loop structure, and the muffling structure 100 has various structures and can be selected as needed. When the silencing structure 100 is a closed-loop structure, the silencing structure 100 is matched with the base body 300, the machine body 400 can be sealed in the silencing structure, and silencing and noise reduction can be performed through the matching of sealed sound insulation and sound absorption; alternatively, the sound attenuation structure 100 and the housing body 300 are matched to surround the circumference of the body 400, but the height of the body 400 is not surrounded (if the upper half is not surrounded), the body 400 is not sealed by the sound attenuation structure 100, and the sound attenuation structure 100 can perform sound attenuation and noise reduction through reflection, refraction, sound absorption and other modes.

When the sound attenuation structure 100 is an open-loop structure, the sound attenuation structure 100 is formed in an open-loop structure in the circumferential direction of the body 400 (for example, the sound attenuation structure 100 is surrounded at the rear half part of the body 400, and the front half part of the body 400 is an open space), and the sound attenuation structure 100 performs sound attenuation and noise reduction by using the refraction, reflection and sound absorption principles of the first side wall 110.

In some cases, the sound attenuation structure 100 is connected to the housing body 300 as an integral structure, the first side wall 110 and the inner side wall of the housing body 300 are formed as a plate, and the second side wall 120 and the outer side wall of the housing body 300 are formed as a plate, so that the number of parts of the housing can be reduced, and the structure can be simplified. In addition, the connecting portion of the silencing structure 100 can be connected with the base body 300 in a clamping, inserting, magnetic attracting mode and the like, the connecting mode is simple, independent processing is convenient, and operations such as replacement and cleaning of the silencing structure 100 are convenient.

The embodiment of the fourth aspect of the present invention provides a food processor, including the body 400 and the sound-attenuating structure 100 for a food processor in any of the above embodiments, the body 400 forms a food processing cavity, and the sound-attenuating structure 100 at least encloses the outside of the local area of the body 400. The sound attenuation structure 100 has the above beneficial effects, and the food processor has the above beneficial effects, which can be referred to specifically, and will not be described herein again.

Where the sound-deadening structure 100 surrounds at least a partial region of at least one of the fuselage 400 and the housing body 300, it is understood that the sound-deadening structure 100 surrounds a partial region or an entire region of the fuselage 400, or the sound-deadening structure 100 surrounds a partial region or an entire region of the housing body 300, or the sound-deadening structure 100 surrounds both the fuselage 400 and the housing body 300, and surrounds a partial region or an entire region of the fuselage 400, a partial region or an entire region of the housing body 300.

Above-mentioned embodiment has explained sound-attenuating structure 100, and sound-attenuating structure 100 needs to use with parts such as fuselage 400, lid 200 and frame cooperation to form the cooking machine, the function of cooking machine is various, and the range of application is wide, still can reduce the noise of cooking machine, promotes user experience. The cooking machine can dispose at least one in foretell lid subassembly and the frame to the effect of noise elimination and noise reduction is realized.

The cooking chamber is formed in fuselage 400 (if the stirring cup), is provided with stirring cutter in the cooking chamber, and the outside in cooking chamber is provided with and is suitable for drive stirring cutter pivoted actuating mechanism, and under actuating mechanism's drive power effect, stirring cutter rotates, and stirring cutter pivoted in-process can carry out operations such as breakage, stirring, realizes the processing to the material. In the rotating process of the stirring cutter, the stirring cutter and the driving mechanism can generate noise, and the silencing structure 100 can surround the outer side of the machine body 400 and play roles of sound insulation, silencing and the like so as to reduce the noise of the food processor.

Under some circumstances, fuselage 400 still has set the heating member, through the heating member for cooking the material heating of intracavity, is heated the boiling at the material, and heating and steam flow all can produce the noise, and sound-damping structure 100 can play sound insulation, effect such as noise elimination to reduce the noise, help promoting user experience.

It is understood that a space is provided between the inner side of the sound-deadening structure 100 and the fuselage 400, and the fuselage 400 is prevented from vibrating to collide with the sound-deadening structure 100. Wherein, first lateral wall 110 and fuselage 400 apart from more than or equal to 2mm, less than or equal to 15mm guarantee noise cancelling effect, and is less to the volume influence of cooking machine.

Wherein, the cooking machine can be broken wall machine, soybean milk machine, mixer, frying pan, thermos, thermostatted kettle etc. and the kind of cooking machine is various, and the cooking machine of other functions also can.

The structural form and the connection manner of the muffling structure 100 can refer to the above, and are not described herein again. The above embodiments describe the case where the sound-deadening structure 100 is connected to the housing body 300 and the cover body 200, and the sound-deadening structure 100 may be connected to the body 400 or the cover body 200 by the above-mentioned connection method.

Next, referring to fig. 1 to 17, the food processor shown in the figure is used as a wall breaking machine, and fig. 12 illustrates that the sound attenuating structure 100 is connected to the cover 200 to form a cover assembly, and the cover assembly is mounted on the base and the body 400 of the food processor. Fig. 17 illustrates the food processor in which the noise attenuating structure 100 is connected to the base body 300.

The cooking machine contains fuselage 400 (if stirring cup) and frame, and fuselage 400 can set up automatically controlled subassembly including being formed with the cup in cooking chamber, cup below, and automatically controlled subassembly is used for driving the stirring cutter rotation in the cup and controls the heating part for the edible material heating of cooking intracavity, and wherein, automatically controlled part can set up in the frame. A silencing structure 100 is added to a machine base body 300 or a machine body 400 of the food processor, and the silencing structure can partially or completely surround the machine body 400. As shown in fig. 12, the sound-deadening structure 100 may serve as a sound-deadening cover that covers the body 400 therein and muffles sound using a sound-deadening chamber; as shown in fig. 17, the sound-deadening structure 100 can also be used as a sound-deadening wall, which can change the direct propagation direction of sound and can perform sound-deadening by using the sound-deadening cavity, so as to reduce the noise of the food processor and improve the use experience of the food processor. As shown in fig. 17, the sound attenuating structure 100 is located behind the fuselage 400 so that sound can only travel directly upward and forward, increasing the internal reflection of sound waves at the fuselage 400 and the sound attenuating structure 100.

The sound attenuating structure 100 may be a closed loop structure that annularly surrounds the fuselage 400, or the sound attenuating structure 100 may also be an open loop structure with sound attenuating components surrounding portions of the fuselage 400.

The muffling structure 100 is provided with at least one of the first muffling cavity 130 and the second muffling cavity 140, and when the first side wall 110 is provided with the first through hole 111 communicated with the first muffling cavity 130, muffling and noise reduction are performed by using a resonance muffling principle; when the first side wall 110 is provided with the second through hole 112 communicating with the second sound-deadening chamber 140, and the second side wall 120 is provided with the third through hole 121 communicating with the second sound-deadening chamber 140, the sound-deadening and noise-reducing effects are achieved by utilizing the principle of expansion sound-deadening. At least one of the first through hole 111 and the second through hole 112 is a micropore with a pore diameter less than or equal to 1mm, so that micropore noise reduction is realized.

A sound absorbing member 180 may be further disposed in at least one of the first and second sound-deadening chambers 130 and 140, and the sound may be partially absorbed by air (or a sound-absorbing material) through the sound absorbing member 180, thereby reducing noise.

In the cooking machine of this embodiment, sound-attenuating structure 100's is small, improves broken wall cooking machine's use and experiences, helps reducing cooking machine's volume, makes things convenient for cooking machine to accomodate and clean.

The above embodiments are merely illustrative, and not restrictive, of the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of the technical solutions should be covered by the scope of the claims of the present invention.

Claims (13)

1. The utility model provides a sound-attenuating structure for cooking machine which characterized in that includes:

a first side wall;

the second side wall is positioned on the outer side of the first side wall, and forms at least one of a first sound-deadening cavity and a second sound-deadening cavity together with the first side wall;

the first silencing cavity is constructed by the silencing structure, and a first through hole communicated with the first silencing cavity is formed in the first side wall;

the silencing structure constructs the second silencing cavity, the first side wall is provided with a second through hole communicated with the second silencing cavity, and the second side wall is provided with a third through hole communicated with the second silencing cavity.

2. The sound attenuation structure for food processers according to claim 1, wherein at least one of the first through hole and the second through hole has a hole diameter of 1mm or less and an opening ratio of 1% or more and 5% or less.

3. The sound attenuation structure for the food processor of claim 2, wherein the first side wall is a metal plate, and the thickness of the first side wall is less than or equal to 1mm.

4. The sound attenuation structure for food processers according to claim 1, wherein at least one of the first through hole and the second through hole has a hole diameter larger than 1mm and a hole opening ratio of 20% or less.

5. The sound attenuation structure for food processers according to claim 1, wherein the ratio of the longitudinal sectional area of the second sound attenuation cavity to the longitudinal sectional area of the second through hole is greater than or equal to 2 and less than or equal to 10.

6. The sound attenuation structure for the food processor according to claim 1, wherein a first distance between adjacent first through holes is greater than or equal to 2 times of the diameter of the first through holes;

and/or a second distance between adjacent second through holes is more than or equal to 2 times of the aperture of the second through holes;

and/or a third distance between the adjacent first through holes and the second through holes is more than or equal to 2 times of the aperture of the first through holes or the second through holes;

and/or a fourth distance between adjacent third through holes is more than or equal to 2 times of the aperture of the third through holes.

7. The sound attenuation structure for the food processor of claim 1, wherein a sound absorbing member is provided in at least one of the first sound-absorbing chamber and the second sound-absorbing chamber.

8. The sound attenuating structure for food processors of any one of claims 1 to 7, wherein the sound attenuating structure is a closed loop structure and is configured with a first opening for connecting the cover and a second opening for connecting the base, the second opening being located below the first opening;

or the silencing structure is an open-loop structure and is provided with a connecting part suitable for being connected with the base.

9. A lid assembly, characterized by comprising a lid body and a sound attenuating structure for a food processor as defined in any one of claims 1 to 7, the sound attenuating structure being a closed loop structure and being configured with a first opening and a second opening for connection with a base, the lid body being connected to the first opening.

10. The cover assembly of claim 9, wherein the end of the sound attenuating structure defining the second opening is provided with a mating portion.

11. A frame, characterized in that, including frame body and the noise-abatement structure for cooking machine of any one of claims 1 to 7, the noise-abatement structure and frame body integrated into one piece or detachable connection.

12. A cooking machine, characterized in that, including fuselage and the sound-attenuating structure for cooking machine of any one of claims 1 to 8, the fuselage forms the cooking chamber, sound-attenuating structure encloses at least in the local region's of fuselage the outside.

13. The food processor of claim 12, wherein the distance between the first side wall and the machine body is greater than or equal to 2mm and less than or equal to 15mm.

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