A host assembly with a noise reduction and heat dissipation structure and a food processor

Abstract

The application provides a host assembly with a noise reduction and heat dissipation structure, a surrounding space is formed between a shell and a protective cover for a motor assembly to block noise generated by the motor assembly, the structure is simple, and assembly is convenient; further, the first outer air duct, the first sound insulation cavity, the inner air duct and the second sound insulation cavity achieve multiple noise blocking and reduction for noise generated by the motor assembly; on the other hand, airflow can flow through the first outer air duct, the first sound insulation cavity and the inner air duct in sequence to dissipate heat for the motor assembly, the first sound insulation cavity is equivalent to a sound attenuation layer and is located between the first outer air duct and the inner air duct, can effectively reduce transmission of airflow vibration, and further reduce noise. The application also provides a food processor comprising the host assembly, the assembly process is extremely simple, has excellent noise reduction and heat dissipation performance, and thus improves user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a host assembly with a noise reduction and heat dissipation structure and a food processor. BACKGROUND

[0002] In the process of using a food processor such as a wall-breaking machine, a soybean milk machine, a food processor, and a pulverizer, the motor assembly of the host assembly rotates at high speed, has a large load, and has large vibration, which results in high noise and directly affects the user experience. On the other hand, as the use time of the food processor increases, the host assembly generates a large amount of heat during high-load operation, and electronic components are prone to failure, which results in unstable product performance and shortens the service life of the product. Therefore, the host assembly needs to be cooled. Most existing cooling methods directly use air flow to carry away the heat of the motor assembly. In this process, the vibration of the air flow produces relatively large noise, and the noise is discharged from the host assembly along with the air flow, which reduces the user experience. SUMMARY

[0003] In order to overcome at least one of the defects of the prior art described above, the present application provides a host assembly with a noise reduction and heat dissipation structure, which has excellent noise reduction and heat dissipation performance and optimizes the user experience. The present application also provides a food processor comprising the host assembly described above.

[0004] The technical solution adopted by the present application to solve the problem is as follows:

[0005] A host assembly with a noise reduction and heat dissipation structure, comprising: a housing provided with a first air inlet; a protective cover arranged in the housing and forming a surrounding space with the housing to achieve noise reduction; the protective cover is sequentially divided into a first outer air duct, a first sound insulation cavity, and an inner air duct from the outside to the inside; a second sound insulation cavity is formed between the housing and the inner air duct; the first outer air duct is in communication with the first air inlet, and the first outer air duct and the inner air duct are in communication through the second sound insulation cavity; a motor assembly is arranged in the inner air duct, the first air inlet, the first outer air duct, the second sound insulation cavity, and the inner air duct are sequentially communicated to form an air flow channel, and the first sound insulation cavity is located between the first outer air duct and the inner air duct to improve the noise reduction effect.

[0006] The host assembly with the noise reduction and heat dissipation structure has simple structure and convenient assembly, the motor assembly is enclosed between the shell and the protective cover to block the noise generated by the motor assembly, further, the first outer air duct, the first sound insulation cavity, the inner air duct and the second sound insulation cavity realize multiple blocking and noise reduction of the noise generated by the motor assembly, on the other hand, the airflow can flow through the first outer air duct, the first sound insulation cavity and the inner air duct in sequence to dissipate heat for the motor assembly, the first sound insulation cavity is equivalent to a sound attenuation layer and is located between the first outer air duct and the inner air duct, can effectively reduce the transmission of airflow vibration, and further reduce the noise.

[0007] According to some embodiments of the present application, the first sound insulation cavity has at least one sound attenuation wall arranged around the inner air duct, the sound attenuation wall divides the first sound insulation cavity into multiple cavities with sound insulation and vibration reduction effects, further reduces the transmission of airflow vibration, and improves the noise reduction effect on the motor assembly.

[0008] According to some embodiments of the present application, the sidewall of the inner air duct is provided with at least one sound attenuation gap, the sound attenuation gap is communicated with the first sound insulation cavity, the noise can be transmitted from the sound attenuation gap to the first sound insulation cavity, and part of the noise of a frequency band is absorbed in the first sound insulation cavity.

[0009] According to some embodiments of the present application, the first sound insulation cavity is provided with a first sound attenuation piece, further absorbs the noise transmitted into the first sound insulation cavity, and further reduces the noise.

[0010] According to some embodiments of the present application, the shell is provided with a sound insulation groove surrounding the second sound insulation cavity, the protective cover is provided with a sound insulation convex rib matched with the sound insulation groove, the sound insulation convex rib is embedded in the sound insulation groove, so that the protective cover and the shell form an enclosure for the motor assembly, easy to assemble, and good sound insulation effect.

[0011] According to some embodiments of the present application, a second outer air duct is formed between the shell and the first outer air duct, and the second outer air duct is in communication with the first air inlet; a first flow guide member is further provided, and the first flow guide member has a flow guide groove, the air inlet of the first outer air duct is located in the flow guide groove, and a gap is formed between the flow guide groove, the first outer air duct and the second outer air duct are in communication through the gap, so that the second outer air duct, the first outer air duct, the second sound insulation cavity and the inner air duct are sequentially communicated and form a serpentine air duct, the airflow passes through the serpentine air duct to carry away the heat generated by the motor assembly, thereby achieving the heat dissipation effect; importantly, the overall length of the serpentine air duct is relatively long, and the serpentine air duct is arranged in a bending manner, so that the noise generated by the airflow flow is reflected in the serpentine air duct, and the noise is gradually attenuated, thereby achieving the noise reduction function; on the other hand, the serpentine air duct is arranged in a bending manner, so that the serpentine air duct can have a streamlined air inlet, the air inlet is more smooth, and the situation that the airflow directly blows the motor assembly to produce wind howling sound and cause loud noise is avoided, thereby achieving the noise reduction function.

[0012] According to some embodiments of the present application, a third outer air duct is arranged between the air outlet of the inner air duct and the shell, the shell is provided with a second flow guide member, a sound outlet cavity is formed between the second flow guide member and the shell, the second flow guide member is opposite to the air outlet of the third outer air duct to change the flow direction of the airflow, and the second flow guide member is provided with a first air outlet for guiding the airflow out of the shell, after the airflow is blocked by the second flow guide member, the flow direction of the airflow is bent in the sound outlet cavity, and the airflow is prevented from being linearly discharged from the air outlet of the third outer air duct, thereby achieving the effect of reducing the noise of the airflow discharge.

[0013] According to some embodiments of the present application, the second flow guide member is provided with an airflow cutting rib to cut the airflow in the sound outlet cavity, thereby reducing the whistling sound generated by airflow friction, and further improving the noise reduction effect when the airflow is discharged.

[0014] According to some embodiments of the present application, the motor assembly comprises a fan blade assembly, the fan blade assembly is located in the third outer air duct, and a second sound absorbing member is arranged between the fan blade assembly and the third outer air duct, the second sound absorbing member can effectively absorb the noise generated by the fan blade assembly, thereby further achieving the noise reduction function.

[0015] The present application further provides a food processor comprising the main machine assembly as described above, which has a simple structure, is easy to assemble, has excellent noise reduction performance and heat dissipation performance, and thus improves the user experience.

[0016] In summary, the main machine assembly with a heat dissipation and noise reduction structure and the food processor provided by the present application at least have the following technical effects:

[0017] 1) the host assembly, simple structure, convenient assembly, and the first outer air duct, the first sound insulation cavity, the inner air duct and the second sound insulation cavity realize multiple blocking and noise reduction of the noise generated by the motor assembly, on the other hand, the airflow can flow through the first outer air duct, the first sound insulation cavity and the inner air duct in turn to cool the motor assembly, the first sound insulation cavity is equivalent to a sound attenuation layer, and is located between the first outer air duct and the inner air duct, which can effectively reduce the transmission of airflow vibration and reduce noise;

[0018] 2) the food processor, comprising the host assembly as described above, the assembly process is extremely simple, has excellent noise reduction performance and heat dissipation performance, thereby improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the host assembly of the embodiment of the application;

[0020] Figure 2 It is a cross-sectional working schematic diagram of the host assembly of the embodiment of the application;

[0021] Figure 3 It is an exploded structural schematic diagram of the host assembly of the embodiment of the application;

[0022] Figure 4 It is a structural schematic diagram of the protective cover of the embodiment of the application;

[0023] Figure 5 It is another structural schematic diagram of the protective cover of the embodiment of the application;

[0024] Figure 6 It is a structural schematic diagram of the upper part of the shell of the embodiment of the application;

[0025] Figure 7 It is a structural schematic diagram of the lower part of the shell of the embodiment of the application;

[0026] Figure 8 It is a structural schematic diagram of the first flow guide of the embodiment of the application;

[0027] Figure 9 It is a structural schematic diagram of the second flow guide of the embodiment of the application;

[0028] Figure 10 It is a cross-sectional working schematic diagram of the air outlet cavity of the embodiment of the application.

[0029] Among them, the meaning of the reference signs is as follows:

[0030] 1 - shell, 11 - first air inlet, 12 - sound insulation groove, 13 - second sound insulation cavity, 14 - second outer air duct, 15 - third outer air duct, 151 - second sound attenuation member, 16 - mounting hole, 17 - blocking rib, 2 - protective cover, 21 - first outer air duct, 22 - first sound insulation cavity, 221 - sound attenuation wall, 23 - inner air duct, 231 - sound attenuation notch, 24 - sound insulation convex rib, 3 - motor assembly, 31 - rotating shaft, 32 - fan blade assembly, 4 - first flow guide member, 41 - flow guide groove, 42 - flow guide block, 5 - second flow guide member, 51 - first air outlet, 52 - air outlet cavity, 53 - air flow cutting rib, 6 - gap. DETAILED DESCRIPTION

[0031] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the accompanying drawings in the embodiments of the present application.

[0032] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the present application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing the specific embodiments and are not intended to limit the present application.

[0034] Please refer to Figures 1 to 3The embodiment discloses a host assembly with a noise reduction and heat dissipation structure, which comprises a shell 1, a protective cover 2 and a motor assembly 3; wherein the protective cover 2 is arranged in the shell 1, and the motor assembly 3 is enclosed between the shell 1 and the protective cover 2 to block the noise generated by the motor assembly 3, which is simple in structure and convenient to assemble; specifically, the protective cover 2 is sequentially divided into a first outer air duct 21, a first sound insulation cavity 22 and an inner air duct 23 from outside to inside, and a second sound insulation cavity 13 is formed between the shell 1 and the inner air duct 23, so that the first outer air duct 21, the first sound insulation cavity 22, the inner air duct 23 and the second sound insulation cavity 13 realize multiple blocking and noise reduction of the noise generated by the motor assembly 3; on the other hand, the bottom of the shell 1 is provided with a first air inlet 11, the first outer air duct 21 is communicated with the first air inlet 11, and the first outer air duct 21 and the inner air duct 23 are communicated through the second sound insulation cavity 13; the motor assembly 3 is arranged in the inner air duct 23, the motor assembly 3 is started, and airflow flows through the first outer air duct 21, the second sound insulation cavity 13 and the inner air duct 23 in sequence from the first air inlet 11 to realize heat dissipation, the first sound insulation cavity 22 is located between the first outer air duct 21 and the inner air duct 23, which is equivalent to an acoustic layer, and can effectively reduce the transmission of airflow vibration between the first outer air duct 21 and the inner air duct 23, thereby reducing the noise.

[0035] Please refer to Figure 6 , preferably, in the embodiment, the upper part of the shell 1 is provided with a blocking rib 17 and a mounting hole 16 for mounting a knife assembly, the blocking rib 17 is arranged around the mounting hole 16 to reduce noise, the vibration at the rotating shaft 31 connected with the motor assembly 3 and the knife assembly is relatively strong, and the generated noise is relatively large, and the second sound insulation cavity 13 is arranged around the rotating shaft 31 to isolate the noise generated at the rotating shaft 31; as shown in Figure 3 、 Figure 4 and Figure 6 , preferably, the upper part of the shell 1 is further provided with a sound insulation groove 12, the protective cover 2 is provided with a sound insulation convex rib 24 matched with the sound insulation groove 12, and the sound insulation convex rib 24 is embedded in the sound insulation groove 12, so that the protective cover 2 and the shell 1 form an enclosed space for the motor assembly 3, which is easy to assemble and has good sound insulation effect.

[0036] Please refer to Figure 3 and Figure 5 , further, the first sound insulation cavity 22 is provided with a sound absorbing wall 221 arranged around the inner air duct 23, the sound absorbing wall 221 divides the first sound insulation cavity 22 into two cavities with sound insulation and vibration reduction effects, further reduces the transmission of airflow vibration, and improves the noise reduction effect on the motor assembly 3; it should be noted that in some embodiments, the number of sound absorbing walls 221 can be 2, 3, 4 or the like, so that the first sound insulation cavity 22 is divided into more small cavities, which can be set according to actual use requirements, and is not limited to only one.

[0037] As shown in Figure 4As shown, preferably, in the present embodiment, the side wall of the inner air duct 23 is provided with a plurality of sound-absorbing notches 231, which are in communication with the first sound-insulating cavity 22, and the noise can be transmitted from the sound-absorbing notches 231 into the first sound-insulating cavity 22, and the noise of a part of frequency bands can be absorbed by the back-and-forth refraction in the first sound-insulating cavity 22; preferably, a first sound-absorbing member is arranged in the first sound-insulating cavity 22, which further absorbs the noise transmitted into the first sound-insulating cavity 22, thereby reducing the noise, and the first sound-absorbing member can be any one of a sound-insulating film, sound-insulating cotton, sound-absorbing board, and sound-insulating felt.

[0038] Please refer to Figure 3 and Figure 8 , as a further description of the above technical solutions, in the present embodiment, the second outer air duct 14 is formed between the shell 1 and the first outer air duct 21, and the second outer air duct 14 is in communication with the first air inlet 11; the protective cover 2 is provided with the first flow guide member 4, the first flow guide member 4 has a flow guide groove 41, the air inlet of the first outer air duct 21 is located in the flow guide groove 41, and a gap is formed between the air inlet of the first outer air duct 21 and the flow guide groove 41, the first outer air duct 21 and the second outer air duct 14 are in communication through the gap, so that the second outer air duct 14, the first outer air duct 21, the second sound-insulating cavity 13, and the inner air duct 23 are sequentially communicated and form a serpentine air duct, and the airflow passes through the serpentine air duct to carry away the heat generated by the motor assembly 3, thereby achieving the heat dissipation effect; importantly, the overall length of the serpentine air duct is relatively long, and the serpentine air duct is arranged in a zigzag manner, so that the noise generated by the airflow flowing in the serpentine air duct is reflected in the serpentine air duct, and the noise gradually attenuates, thereby achieving the noise reduction function; on the other hand, the serpentine air duct is arranged in a zigzag manner, so that the serpentine air duct can have a streamlined air inlet, the air inlet is more smooth, and the situation that the airflow directly blows on the motor assembly 3 to produce a loud wind howling sound is avoided, thereby achieving the noise reduction function.

[0039] Please refer to Figure 2 , Figure 3 and Figure 7 , preferably, the third outer air duct 15 is arranged between the air outlet of the inner air duct 23 and the shell 1, the motor assembly 3 includes a fan blade assembly 32, the fan blade assembly 32 is located in the third outer air duct 15, and the fan blade assembly 32 is located below the air outlet of the inner air duct 23; when the motor assembly 3 is started, the fan blade assembly 32 rotates to draw the airflow into the inner air duct 23 and discharge the airflow to the air outlet of the third outer air duct 15, thereby achieving efficient heat dissipation of the motor assembly 3; the second sound-absorbing member 151 is arranged between the fan blade assembly 32 and the third outer air duct 15, and the second sound-absorbing member 151 can effectively absorb the noise generated by the fan blade assembly 32, thereby further achieving the noise reduction function.

[0040] Please refer to Figure 2 and Figure 7Specifically, in the embodiment, the third outer air duct 15 is in the shape of a volute, and the fan blade assembly 32 also generates relatively large noise when working. The volute-shaped third outer air duct 15 can reduce the noise generated by the rotation of the fan blade assembly 32 and the noise generated by the airflow flowing through the third outer air duct 15. On the other hand, the shape of the second sound-absorbing member 151 matches the shape of the third outer air duct 15. The volute-shaped third outer air duct 15 effectively extends the contact length of the airflow with the second sound-absorbing member 151 when the airflow flows, thereby improving the sound-absorbing and noise-reducing effect. The second sound-absorbing member 151 can be any one of a soundproof film, soundproof cotton, a sound-absorbing board, and soundproof felt.

[0041] Please refer to Figure 2 and Figure 8 , the first flow guide member 4 extends towards the air outlet of the third outer air duct 15 and is provided with a flow guide block 42 to guide the airflow to flow towards the air outlet of the third outer air duct 15, thereby reducing the noise when the airflow is discharged. Specifically, the side of the flow guide block 42 facing the air outlet of the third outer air duct 15 is arc-shaped, thereby achieving a better guiding effect and a noise-reducing effect.

[0042] As shown in Figure 2 , Figure 3 , Figure 9 and Figure 10 , further, in the embodiment, the bottom of the shell 1 is provided with a recess, and the recess is embedded with the second flow guide member 5, so that the second flow guide member 5 and the shell 1 form an air outlet cavity 52 therebetween. The second flow guide member 5 is arranged opposite to the air outlet of the third outer air duct 15 and is provided with a first air outlet 51 for guiding the airflow out of the shell 1. Specifically, after the airflow is blocked by the second flow guide member 5 and flows out of the air outlet of the third outer air duct 15, the flow direction of the airflow is bent by 90 degrees in the air outlet cavity 52, avoiding the airflow being discharged in a straight line from the air outlet of the third outer air duct 15, thereby achieving the effect of reducing the noise when the airflow is discharged. It should be noted that in some embodiments, after the airflow is blocked by the second flow guide member 5, the airflow can be bent by an angle of 70 degrees, 75 degrees, 80 degrees, etc. in the air outlet cavity 52, which can be set according to actual use requirements and is not limited to this.

[0043] Preferably, the first air outlet 51 is arranged at the end of the second flow guide member 5 away from the air outlet of the third outer air duct 15, so as to prolong the flow distance of the airflow in the air outlet cavity 52, so that the noise when the airflow is discharged gradually attenuates. Importantly, the second flow guide member 5 is provided with a plurality of airflow cutting ribs 53 to cut the airflow in the air outlet cavity 52, thereby reducing the whistling sound generated by airflow friction, and further improving the noise-reducing effect when the airflow is discharged.

[0044] The embodiment also provides a food processor comprising the main machine assembly as above, which has a simple structure, is easy to assemble, has excellent noise-reducing and heat-dissipating performance, and thereby improves the user experience.

[0045] In summary, the host assembly with the heat dissipation and noise reduction structure and the food processor provided by the application have at least the following technical effects:

[0046] 1) The host assembly has a simple structure and is easy to assemble; the first outer air duct 21, the first sound insulation cavity 22, the inner air duct 23 and the second sound insulation cavity 13 achieve multiple noise reduction by blocking the noise generated by the motor assembly 3; on the other hand, the airflow can flow through the first outer air duct 21, the first sound insulation cavity 22 and the inner air duct 23 in sequence to dissipate heat for the motor assembly 3; the first sound insulation cavity 22, which is equivalent to a sound attenuation layer and is located between the first outer air duct 21 and the inner air duct 23, can effectively reduce the transmission of airflow vibration and thus reduce noise;

[0047] 2) The sound attenuation wall 221 divides the first sound insulation cavity 22 into multiple cavities with sound insulation and vibration reduction effects, further reducing the transmission of airflow vibration and improving the noise reduction effect on the motor assembly 3;

[0048] 3) The sound insulation protruding ribs 24 are embedded in the sound insulation grooves 12 to form a closed space for the motor assembly 3 with the protective cover 2 and the shell 1, which is easy to assemble and has good sound insulation effect;

[0049] 4) The second outer air duct 14, the first outer air duct 21, the second sound insulation cavity 13 and the inner air duct 23 are sequentially connected and form a serpentine air duct; the serpentine air duct has a relatively long overall length and is arranged in a bending manner, so that the noise generated by the airflow flow will be reflected in the serpentine air duct and gradually attenuated, thereby achieving the noise reduction function; on the other hand, the serpentine air duct can have a streamlined air inlet form, which makes the air inlet more smooth and avoids the situation that the airflow directly blowing the motor assembly 3 produces a loud howling sound, thereby achieving the noise reduction function;

[0050] 5) The second flow guide 5 makes the airflow flow direction bend in the air outlet cavity 52, avoiding the airflow being discharged linearly from the air outlet of the third outer air duct 15, thereby achieving the effect of reducing the noise of airflow discharge; in addition, the airflow cutting rib 53 cuts the airflow in the air outlet cavity 52 to reduce the howling sound generated by airflow friction, further improving the noise reduction effect when the airflow is discharged;

[0051] 6) The food processor comprises the above-mentioned host assembly, which has a simple structure, is easy to assemble, has excellent noise reduction performance and heat dissipation performance, and thus improves the user experience.

[0052] The technical means disclosed in the present application are not limited to the technical means disclosed in the above embodiments, and include technical solutions composed of any combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the scope of protection of the present application.

Claims

1. A host component with a noise reduction and heat dissipation structure, characterized in that, include: The housing (1) is provided with a first air inlet (11); A protective cover (2) is provided inside the housing (1) and forms an enclosed space with the housing (1); The protective cover (2) is divided into a first external air duct (21), a first sound insulation cavity (22) and an internal air duct (23) from the outside to the inside. The motor assembly (3) is located in the inner air duct (23); A second soundproof cavity (13) is formed between the housing (1) and the inner air duct (23); the housing (1) is provided with a soundproof groove (12) surrounding the second soundproof cavity (13), and the protective cover (2) is provided with a soundproof rib (24) adapted to the soundproof groove (12). The soundproof rib (24) is embedded in the soundproof groove (12) so that the protective cover (2) and the housing (1) form an enclosure of the motor assembly (3); The first external air duct (21) is connected to the first air inlet (11), and the first external air duct (21) and the inner air duct (23) are connected through the second sound insulation cavity (13); the first air inlet (11), the first external air duct (21), the second sound insulation cavity (13) and the inner air duct (23) are connected in sequence to form a serpentine air duct; The first soundproof cavity (22) is provided with at least one sound-absorbing wall (221) arranged in a ring around the inner air duct (23).

2. A host component according to claim 1, characterized in that, The inner air duct (23) has at least one sound-absorbing notch (231) on its side wall that communicates with the first sound insulation cavity (22).

3. A host component according to claim 1, characterized in that, The first soundproof cavity (22) is provided with a first sound-absorbing component.

4. A host component according to any one of claims 1-3, characterized in that, A second external air duct (14) is formed between the housing (1) and the first external air duct (21), and the second external air duct (14) is connected to the first air inlet (11); It also includes a first air guide (4), which has an air guide groove (41). The air inlet of the first external air duct (21) is located in the air guide groove (41) and a gap (6) is formed between it and the air guide groove (41). The first external air duct (21) and the second external air duct (14) are connected through the gap (6) so that the second external air duct (14), the first external air duct (21), the second sound insulation cavity (13) and the internal air duct (23) are connected in sequence to form a serpentine air duct.

5. A host component according to claim 4, characterized in that, A third external air duct (15) is provided between the air outlet of the inner air duct (23) and the housing (1); the housing (1) is provided with a second guide (5), and an air outlet cavity (52) is formed between the second guide (5) and the housing (1). The second guide (5) is opposite to the air outlet of the third external air duct (15) to change the airflow direction, and a first air outlet (51) is provided to guide the airflow out of the housing (1).

6. A host component according to claim 5, characterized in that, The second guide (5) is provided with airflow cutting ribs (53).

7. A host component according to claim 5, characterized in that, The motor assembly (3) includes a fan blade assembly (32); the fan blade assembly (32) is located in the third external air duct (15), and a second silencing component (151) is provided between the fan blade assembly (32) and the third external air duct (15).

8. A food processing machine, characterized in that, Includes the host component as described in any one of claims 1-7.

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