CN220141480U - Optimized noise-reducing food processor - Google Patents

Abstract

The utility model discloses an optimized noise reduction food processor, which comprises a machine body, a crushing assembly and a motor, wherein the crushing assembly and the motor are arranged on the machine body, the lower end of the motor is connected with a cooling fan, a wind collecting cavity and a cooling channel communicated with the wind collecting cavity are arranged in the machine body, the cooling fan is suspended in the wind collecting cavity, the cooling channel comprises a first channel and a second channel, the first channel is positioned on the upper side of the second channel, one side of the first channel and one side of the second channel are also provided with a communication channel, and the communication channel is used for communicating the first channel with the second channel. According to the food processor, the upper and lower double-layer heat dissipation channels are arranged, so that the propagation path of noise can be prolonged on one hand, and noise attenuation is enhanced; on the other hand, when the noise flows from the first channel to the second channel, the propagation direction of the noise is changed, so that sound waves with opposite phases are easy to generate, and the mutual cancellation of the sound waves with opposite phases can effectively weaken the noise energy, thereby reducing the noise intensity transmitted to the outside of the machine; meanwhile, the motor can radiate heat through the heat radiation channel, so that the service life of the motor can be prolonged.

Description

Optimized noise-reducing food processor

Technical Field

The utility model relates to the field of household appliances, in particular to a food processor capable of optimizing noise reduction.

Background

The existing food processor is characterized in that a heat dissipation air duct is generally arranged on a host machine for discharging heat of the motor for the motor, so that the service performance of the motor is guaranteed to be good, and the service life of the motor is prolonged. The heat dissipation air duct is a single-layer air duct structure formed by enclosing an air duct cover and a base, and when the motor works, a fan blade at the lower end of the motor blows out hot air flow through the heat dissipation air duct; in order to meet the noise reduction requirement, the inner wall of the heat dissipation air duct is usually provided with sound absorption cotton for absorbing noise, however, the inner space of the heat dissipation air duct is reduced due to the sound absorption cotton, which is not beneficial to noise attenuation, otherwise, if the enclosing space of the heat dissipation air duct is increased, the host is enlarged, which is not beneficial to machine miniaturization. Further, the air flow is finally discharged from the air outlet at one end of the heat dissipation air duct directly when flowing along the heat dissipation air duct, and the heat dissipation air duct is not provided with a reflecting structure for weakening noise. In other schemes, the outer side of the heat dissipation air duct is additionally provided with a surrounding rib wall to form a sound insulation structure, the side wall of the heat dissipation air duct is provided with a through hole, and a part of noise can pass through the through hole to strike the sound insulation structure to be attenuated; however, the main unit is also enlarged in size, and when noise passes through the heat dissipation air duct to reach the rib surrounding wall along the same horizontal height, sound waves with opposite phases are not easy to generate, so that the effect of weakening the sound wave energy is poor, and the noise reduction effect is affected.

Disclosure of Invention

In order to solve one or more technical problems in the prior art, or at least to provide an advantageous option, the present utility model provides a food processor with optimized noise reduction, so as to improve the noise reduction effect of the machine and reduce the working noise of the machine on the premise of meeting the heat dissipation of a motor.

The utility model discloses an optimized noise reduction food processor, which comprises a machine body, a crushing assembly and a motor, wherein the crushing assembly is arranged on the machine body, the lower end of the motor is connected with a cooling fan, a wind collecting cavity and a cooling channel communicated with the wind collecting cavity are arranged in the machine body, the cooling fan is suspended in the wind collecting cavity, the cooling channel comprises a first channel and a second channel, the first channel is positioned on the upper side of the second channel, one side of the first channel and one side of the second channel are also provided with a communication channel, and the communication channel is used for communicating the first channel with the second channel.

The optimized noise-reducing food processor of the utility model also has the following additional technical characteristics:

the first channel comprises at least two sections of arc-shaped air channels which are connected, and the connection position of each two adjacent sections of arc-shaped air channels is contracted relative to the inner diameter of each arc-shaped air channel; and/or the end of the first channel is communicated with the communication channel, and the end of the first channel is contracted relative to the communication channel.

The machine body comprises a base and an air duct cover arranged on the base; the first channel is arranged on the air channel cover, and the second channel is arranged on the base.

The machine body comprises a base and an air duct cover arranged on the base; the second channel is arranged on the base, a groove is further formed in the top of the base, and the air channel cover and the groove are enclosed to form the first channel.

The communication channel is arranged on the base and is positioned at the inlet end of the second channel; or the communication channel is arranged on the air channel cover and is positioned at the outlet end of the first channel; or the communication channel comprises an upper cavity and a lower cavity which are communicated, the upper cavity is arranged on the air duct cover, and the lower cavity is arranged on the base.

The air duct cover comprises a cover body and a cover body, wherein an air collecting cavity is formed in the cover body, and the cover body extends outwards along the lower end of the cover body so that the air collecting cavity and the first channel form a height difference.

The base is provided with an upward concave annular silencing cavity, and the annular silencing cavity is communicated with the second channel; the cover body covers and establishes annular amortization chamber upside.

The base is provided with a grid plate, the grid plate is arranged between the communication channel and the second channel, one side of the grid plate is provided with an outwards extending rib wall, and a communication hole is formed between two adjacent rib walls and used for communicating the communication channel with the second channel.

The base is provided with a sound insulation plate protruding upwards relative to the base, and the sound insulation plate is arranged on the outer side of the communication channel in a surrounding mode; and/or the bottom of the base is provided with a supporting foot pad, and the supporting foot pad is used for isolating the base from a table top for placing the food processing machine so as to form a gap between the second channel and the table top.

The motor is fixed below the crushing assembly, or the machine body is provided with a shell, and the motor is flexibly hoisted in the shell; the motor outside is equipped with the motor cover, the motor cover lower extreme with the sealed cooperation of wind-collecting chamber.

By adopting the technical scheme, the utility model has the following beneficial effects:

1. according to the optimized noise-reducing food processor, the upper and lower double-layer heat dissipation channels are arranged, so that on one hand, the propagation path of noise can be prolonged, and the noise attenuation is enhanced; on the other hand, when the noise flows from the first channel to the second channel, the propagation direction of the noise is changed, so that sound waves with opposite phases are easy to generate, and the mutual cancellation of the sound waves with opposite phases can effectively weaken the noise energy, thereby reducing the noise intensity transmitted to the outside of the machine; simultaneously, heat generated by motor operation can be timely discharged through the heat dissipation channel, and the influence on the service life of the motor caused by serious heating can be avoided.

2. As a preferred embodiment, the first channel comprises at least two sections of connected arc-shaped air channels, and the connection position of two adjacent sections of arc-shaped air channels is contracted relative to the inner diameter of the arc-shaped air channel; the first channel is arranged to be a curved air channel, so that the path of the first channel can be further prolonged to strengthen noise attenuation, and noise energy is favorably consumed by utilizing abrupt change of the space section when the noise enters the next air channel along the connecting position of the two sections of arc-shaped air channels, so that the noise reduction effect is improved again.

The end of the first channel is communicated with the communication channel, and the end of the first channel is contracted relative to the communication channel; therefore, when noise enters the communication channel along the first channel, abrupt change of the space section is utilized to be beneficial to noise energy consumption, and the noise reduction effect can be improved again.

3. As a preferred embodiment, the body includes a base and an air duct cover mounted on the base; the first channel is arranged on the air channel cover, and the second channel is arranged on the base; in the prior art, the air duct cover and the base are only enclosed to form a single-layer air duct structure, and the double-layer air duct structure can utilize the structural space of the air duct cover and the base to form a superposed double-layer channel, so that the noise reduction performance is improved, the volume of the machine body is prevented from being enlarged, and the machine is miniaturized and compactified.

4. As a preferred embodiment, the body includes a base and an air duct cover mounted on the base; the second channel is arranged on the base, a groove is further formed in the top of the base, and the air channel cover and the groove are enclosed to form the first channel; in this embodiment, the space of the base can be fully utilized to form a double-layer channel, which helps to simplify the molding of the air duct cover.

5. As a preferred embodiment, the communication channel is arranged on the base and is positioned at the inlet end of the second channel; therefore, the formation of the communication channel can be simplified, and the first channel and the second channel are communicated by the communication channel, so that the smooth discharge of the heat of the motor is ensured.

As a preferred embodiment, the communication channel is arranged on the air channel cover and is positioned at the outlet end of the first channel; therefore, the formation of the communication channel can be simplified, and the first channel and the second channel are communicated by the communication channel, so that the smooth discharge of the heat of the motor is ensured.

As a preferred embodiment, the communication channel comprises an upper cavity and a lower cavity which are communicated, the upper cavity is arranged on the air duct cover, and the lower cavity is arranged on the base; in the embodiment, the base and the air duct cover can be utilized to jointly form a communication channel, namely, the heat dissipation channel can be formed by only the action of installing the air duct cover on the base, and meanwhile, the upper layer channel and the lower layer channel are communicated, so that the heat dissipation and noise reduction of the motor are met, and meanwhile, the assembly between structural members can be simplified.

6. As a preferred embodiment, the air duct cover comprises a cover body and a cover body, wherein an air collecting cavity is formed in the cover body, and the cover body extends outwards along the lower end of the cover body so as to form a height difference between the air collecting cavity and the first channel; therefore, the inner space of the cover body can be utilized to form the wind collecting cavity so as to accommodate the cooling fan, the hot air is led out through the cooling fan, and the height difference is formed between the wind collecting cavity and the first channel, so that the reflection retracing of sound waves can be reduced, the retracing of hot air flow can be avoided, and the cooling effect is optimized.

Further, the base is provided with an upward concave annular silencing cavity, and the annular silencing cavity is communicated with the second channel; the cover body is covered on the upper side of the annular silencing cavity; thus, the noise entering the annular silencing cavity from the second channel can further consume and shield the noise by utilizing the space and the cavity wall of the annular silencing cavity, and finally the noise transmitted to the outside of the machine can be reduced.

7. As a preferred embodiment, the base is provided with a grid plate, the grid plate is arranged between the communication channel and the second channel, one side of the grid plate is provided with a rib wall extending outwards, and a communication hole is arranged between two adjacent rib walls for communicating the communication channel with the second channel; from this, the air current passes through the intercommunicating pore and gets into the second passageway and finally discharges from the second passageway through the intercommunication passageway, and the intercommunicating pore forms between the grid, compares in conventional circular hole, reducible air current loss, and through setting up the muscle wall, multiplicable and the area of contact of base is favorable to reinforcing grid board's support, can avoid the impact grid board to influence its assembly stability when the air current velocity of flow is very fast.

8. As a preferred embodiment, the base has a baffle plate protruding upward relative to the base, the baffle plate surrounding an outer side of the communication passage; through setting up the acoustic celotex board, it can constitute and enclose the fender structure, can prevent directly outgoing of the noise that leaks from the heat dissipation channel, provides noise reflection structure, further optimizes the noise reduction effect.

The bottom of the base is provided with a supporting foot pad which is used for isolating the base from a table top on which the food processing machine is placed so that a gap is formed between the second channel and the table top; therefore, when the food processor is placed on the table top, hot air flows out of the second channel and flows around along the gap, so that heat can be prevented from being accumulated at the bottom of the base and cannot be dissipated to cause temperature rise of the processor, and the heat dissipation effect is affected.

9. As a preferred embodiment, the motor is fixed below the crushing assembly, or the machine body is provided with a shell, and the motor is flexibly hoisted in the shell; a motor cover is arranged on the outer side of the motor, and the lower end of the motor cover is in sealing fit with the wind collecting cavity; through setting up the motor cover, when food processor works, cold wind can carry motor heat to get into the collection wind chamber after flowing through the motor, then discharges through the heat dissipation passageway, has guaranteed that motor heat is discharged along the route that sets for, can avoid the heat to flow and scurrying in the organism, and the motor cover forms the parcel to the motor, can strengthen the sound insulation effect of motor noise, optimize and fall and make an uproar; through making motor cover and collection wind chamber sealing fit, can avoid hot air current and noise leakage, be favorable to promoting heat dissipation and noise reduction effect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic view of a food processor according to an embodiment of the present utility model.

Fig. 2 is an exploded view of an assembly of a motor, a motor cover, and a heat dissipation path according to an embodiment of the present utility model.

Fig. 3 is a schematic layout diagram of a heat dissipation channel according to an embodiment of the utility model.

Fig. 4 is a schematic diagram of acoustic wave cancellation.

Fig. 5 is a schematic top view of a base according to an embodiment of the present utility model.

Fig. 6 is a schematic view of the base of fig. 5 at another viewing angle.

Fig. 7 is a schematic rear view of the base of fig. 5.

Fig. 8 is a schematic structural view of an air duct cover according to an embodiment of the present utility model.

Fig. 9 is a schematic rear view of the duct cover of fig. 8.

Reference numerals:

the device comprises a machine body, a 11-crushing assembly, a 12-motor, a 121-cooling fan, a 101-air collecting cavity, a 102-sealing ring, a 13-motor cover, a 14-base, a 15-air duct cover, a 141-air duct wall, a 151-cover body, a 152-cover body, a 142-annular silencing cavity, a 143-buckle, a 153-clamping groove, a 144-screw column, a 154-screw hole, a 16-grid plate, a 161-rib wall, a 162-communication hole, a 17-sound insulation plate, a 18-supporting foot pad, a 181-foot pad mounting hole, a 20-first channel, a 21-second channel, a 22-communication channel, a 201-first arc-shaped air duct, a 202-second arc-shaped air duct and a 100-table top.

Detailed Description

In order to more clearly illustrate the general inventive concept, reference will be made in the following detailed description, by way of example, to the accompanying drawings.

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than as described herein, and therefore the scope of the present utility model is not limited by the specific embodiments disclosed below.

In addition, in the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. However, it is noted that direct connection indicates that two connected bodies are not connected through a transition structure, but are connected through a connection structure to form a whole. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 the present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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.

As shown in fig. 1 to 9, the utility model provides a food processor with optimized noise reduction, which comprises a machine body 10, a crushing assembly 11 and a motor 12, wherein the crushing assembly 11 and the motor 12 are arranged on the machine body 10, the lower end of the motor 12 is connected with a cooling fan 121, a wind collecting cavity 101 and a cooling channel communicated with the wind collecting cavity 101 are arranged in the machine body 10, the cooling fan 121 is suspended in the wind collecting cavity 101, the cooling channel comprises a first channel 20 and a second channel 21, the first channel 20 is positioned on the upper side of the second channel 21, a communication channel 22 is further arranged on one side of the first channel 20 and one side of the second channel 21, and the communication channel 22 is used for communicating the first channel 20 with the second channel 21.

Specifically, the pulverizing module 11, the motor 12, and the heat dissipation fan 121 are disposed from top to bottom, and the heat dissipation fan 121 rotates to focus the hot air flow into the air collection chamber 101 and then the hot air flow is discharged to the outside along the heat dissipation path during the operation of the food processor. Under the condition that the double-layer overlapped channel is arranged, when the motor 12 radiates heat, the noise of the motor 12 and the wind noise of airflow can be weakened through the radiating channel, so that the noise transmitted to the outside of the machine is extremely small, and the noise reduction performance of the machine is improved. The principle of the utility model for realizing noise reduction by utilizing the heat dissipation channel is as follows: on one hand, compared with a single-layer channel path, the path of the double-layer channel is prolonged, and noise energy consumption can be increased along the noise propagation path, so that noise intensity can be attenuated; on the other hand, when the noise sound wave enters the second channel 21 from the first channel 20 through the communication channel 22, the noise sound wave is reflected by the communication channel 22, so that the sound wave forms sound waves with opposite phases, and a part of noise energy can be counteracted, thereby weakening the noise. As shown in fig. 3 and 4, when the sound wave 1 enters the second channel 21 from the first channel 20 through the communication channel 22, a certain sound wave form generates a sound wave 2 with opposite phases, and the two sound waves can cancel each other to weaken noise energy to realize noise reduction (the arrow in fig. 3 is a schematic airflow flowing direction).

As shown in fig. 1 and 2, a motor cover 13 is disposed outside the motor 12, and can form a package for the motor 12, so as to isolate a part of noise of the motor 12. An air channel is formed on the inner side of the motor cover 13, cold air enters from the upper end of the motor cover 13, and after flowing through the motor 12, heat of the motor 12 is carried into the air collecting cavity 101 on the lower side, so that heat or noise is prevented from leaking from the matching position of the motor cover 13 and the air collecting cavity 101, and for example, a sealing ring 102 is arranged between the motor cover 13 and the air collecting cavity 101, and the reliability of heat dissipation and noise reduction can be improved.

The mounting manner of the motor 12 is not particularly limited, and the present utility model may be realized by any of the following methods, for example. One is that the motor 12 is fixed below the crushing assembly 11, and the crushing cup of the crushing assembly 11 can be arranged in a disassembling-free way. The other is that the motor 12 is flexibly hoisted in the shell of the machine body 10, and the upper end of the motor 12 can extend upwards out of the top of the shell so as to be in transmission connection with the crushing cup of the crushing assembly 11. Whichever mounting means is used, heat dissipation and noise reduction of the motor 12 are not affected.

Further, the present utility model is not particularly limited as to the manner of forming the first and second passages 20 and 21, and may be realized, for example, by any of the following manners. As shown in fig. 2, the body 10 includes a base 14 and an air duct cover 15 mounted on the base 14, which are detachably mounted so as to be able to clean the inside of the duct when the two are separated.

Example 1:

the first channel 20 is provided on the air duct cover 15 and the second channel 21 is provided on the base 14. Specifically, as shown in fig. 3 and 5 to 7, the base 14 has an upwardly convex air duct wall 141, and the air duct wall 141 encloses the second passage 21 at a position at the bottom of the base 14; further, the duct cover 15 has a sidewall extending downward, and is capable of enclosing with the upper surface of the duct wall 141 to form the first channel 20.

In this embodiment, by partially recessing the base 14 to form the second channel 21, the heat dissipation channels can be arranged by fully utilizing the shape of the base 14, and the volume of the machine body 10 can be prevented from being increased.

Example 2:

the first channel 20 is provided on the air duct cover 15 and the second channel 21 is provided on the base 14. Specifically, the base 14 has an upwardly protruding air duct wall 141, and the air duct wall 141 encloses the second channel 21 at the bottom of the base 14; further, the air duct cover 15 is stacked on the upper side of the air duct wall 141, and the air duct cover 15 is closed at the bottom so that it can form the first passage 20 itself.

Example 3:

the second channel 21 is disposed on the base 14, a groove is further disposed on the top of the base 14, and the air duct cover 15 and the groove enclose to form a first channel 20.

Compared with the embodiment 1, the upper surface of the air duct wall 141 is provided with a groove, or the side wall of the air duct wall 141 extends upward and then forms a groove with the upper surface of the air duct wall 141, so that a space is provided for forming the first channel 20, and the structure of the air duct cover 15 can be relatively simplified, for example, it can be provided as a simple cover plate structure. Of course, it is understood that the duct cover 15 may also have a downwardly extending sidewall structure to enclose the recess to form the first channel 20 of enlarged volume.

Further, the present utility model optimizes the formation of the communication channel 22 based on the above-mentioned structure of the base 14 and the air duct cover 15, for example, the communication channel 22 may be provided on the base 14, and at this time, the communication channel 22 is connected to the inlet end of the second channel 21, and one end of the communication channel 22 is communicated with the first channel 20, and the other end is communicated with the second channel 21. Alternatively, the communication passage 22 may be provided on the air channel cover 15, in which case the communication passage 22 is connected to the outlet end of the first passage 20, and one end of the communication passage 22 communicates with the first passage 20 and the other end communicates with the second passage 21. Alternatively, the communication channel 22 includes an upper cavity and a lower cavity that are communicated, the upper cavity is disposed on the air duct cover 15, and the lower cavity is disposed on the base 14, wherein the upper cavity is communicated with the first channel 20, and the lower cavity is communicated with the second channel 21. That is, the present utility model can flexibly provide the communication passage 22 by using the shapes of the base 14 and the duct cover 15, as long as the communication between the first passage 20 and the second passage 21 can be satisfied. The communication passage 22 may be provided on one side in the horizontal direction of the first passage 20, on one side in the horizontal direction of the second passage 21, or on the same side as the first passage 20 and the second passage 21.

On the basis of the above, the present utility model further optimizes the shape of the first and second channels 20 and 21.

Preferably, the first channel 20 includes at least two connected arc-shaped air channels, and the connection position of two adjacent arc-shaped air channels is contracted relative to the inner diameter of the arc-shaped air channel.

As shown in fig. 5, the first duct 20 includes a first arc-shaped duct 201 and a second arc-shaped duct 202, and the first arc-shaped duct 201 and the second arc-shaped duct 202 are bent in opposite directions to form a curved duct, which helps to lengthen a noise propagation path and increase a contact frequency of noise with a wall surface of the arc-shaped duct, thereby facilitating greater noise reduction. Further, the cross-sectional length at the connection position of the first arc-shaped air duct 201 and the second arc-shaped air duct 202 is a, which is smaller than the cross-sectional length of the inlet end of the second arc-shaped air duct 202, so that noise energy is advantageously consumed by utilizing abrupt changes in the spatial cross-section when noise enters the second arc-shaped air duct 202 from the connection position, and thus, the noise reduction effect can be further improved.

Further, the end of the first passage 20 communicates with the communication passage 22, and the end of the first passage 20 is constricted relative to the communication passage 22. As shown in fig. 5, the end of the first passage 20 has a cross-sectional length B that is smaller than the cross-sectional length of the inlet end of the communication passage 22 (B is smaller than the cylindrical diameter of the communication passage 22 when the communication passage 22 has a cylindrical shape), whereby noise energy can be consumed by abrupt changes in the spatial cross-section when noise enters the communication passage 22 along the first passage 20, thereby further improving the noise reduction effect.

It will be appreciated that the shape of the second channel 21 may be the same as that of the first channel 20, as shown in fig. 5 and 7, the front and back sides of the base 14 respectively form the first channel 20 and the second channel 21, and the shapes of the two channels are the same, when the hot air flows along the first channel 20, the hot air flows through the first arc-shaped air channel 201 and then through the second arc-shaped air channel 202, and after entering the second channel 21, the hot air flows through the second arc-shaped air channel 202 and then through the first arc-shaped air channel 201, thereby realizing hot air discharge.

Further, the air duct cover 15 includes the cover 151 and the cover 152, the air collecting cavity 101 is formed in the cover 151, and the cover 152 extends outward along the lower end of the cover 151 to form a height difference between the air collecting cavity 101 and the first channel 20.

As shown in fig. 3, 8 and 9, the air collecting cavity 101 may be formed by using a part of the space of the air duct cover 15 to accommodate the heat dissipating fan 121, and the heat dissipating fan 121 directs the hot air flow to blow the hot air flow to the heat dissipating channel after entering the air collecting cavity 101, so that the hot air flow has a falling tendency when flowing into the first channel 20 from the air collecting cavity 101, the reflection and retracing of the sound wave may be reduced, the retracing of the hot air flow may be avoided, and the heat dissipating effect may be optimized. As shown in FIG. 3, there is a drop E between the wind collecting chamber 101 and the first channel 20, wherein E is equal to or greater than 2mm.

Furthermore, a drop F is also formed between the first channel 20 and the second channel 21, wherein F is greater than or equal to 4mm, and the reflection and retracing of the sound wave can be reduced, and the retracing of the hot air flow can be avoided.

Further, the base 14 is provided with an upward concave annular silencing cavity 142, and the annular silencing cavity 142 is communicated with the second channel 21; cover 151 covers the upper side of annular muffler chamber 142.

As shown in fig. 3 or fig. 7, annular sound-deadening chamber 142 is connected to the outlet end of second channel 21, and when sound waves enter annular sound-deadening chamber 142, on the one hand, there is a sudden change in the spatial cross section, which is beneficial to consume sound wave energy, and on the other hand, the reflection of sound waves can be weakened by the chamber wall of annular sound-deadening chamber 142, and finally, the noise transmitted from base 14 via annular sound-deadening chamber 142 can be very small, which is beneficial to improving user experience.

Preferably, as shown in fig. 6 and 8, for example, a buckle 143 is provided on a cavity wall of the annular silencing cavity 142, a slot 153 is provided on the cover 151, and the buckle 143 is in plug-in fit with the slot 153 when the air duct cover 15 is installed. It is understood that the positions of the buckle 143 and the slot 153 may be replaced, so as not to affect the assembly effect of the air duct cover 15. Further, in order to enhance the installation firmness of the air duct cover 15, for example, a screw column 144 is provided on the base 14, a screw hole 154 in plug-in fit with the screw column 144 is provided on the cover 152, and screw connection can be used to enhance the fit of the two structural members.

On the basis of the above-mentioned scheme, in order to realize the communication between the communication channel 22 and the second channel 21, preferably, as shown in fig. 6, the base 14 is provided with a grid plate 16, the grid plate 16 is disposed between the communication channel 22 and the second channel 21, one side of the grid plate 16 is provided with an outwardly extending rib wall 161, and a communication hole 162 is disposed between two adjacent rib walls 161 for communicating the communication channel 22 and the second channel 21.

Specifically, the grid plate 16 is vertically supported on the base 14, and a plurality of communication holes 162 are formed in the grid plate 16 for allowing the air flow to pass therethrough into the second passage 21, wherein the communication holes 162 have a square grid structure, for example, and the air flow loss can be reduced compared with the circular holes. By providing the plurality of rib walls 161, the rib walls 161 extend in the thickness direction of the grid plate 16, the contact area with the base 14 can be increased, and thus the stability of the support of the grid plate 16 can be enhanced, and the impact on the grid plate 16 at a high airflow velocity can be prevented from reducing the reliability of use.

The formation of the communication hole between the communication passage 22 and the second passage 21 is not limited to the above, and for example, in other examples, the grill plate 16 may be omitted and the side wall of the duct wall 141 may be directly perforated, which is simpler.

Further, on the basis of the above-described configuration, the base 14 has the baffle 17 protruding upward with respect to the base, and the baffle 17 is provided around the outside of the communication passage 22. Through setting up acoustic celotex board 17, it can constitute and enclose the fender structure, can prevent directly outgoing of the noise that leaks from the heat dissipation channel, provides noise reflection structure, further optimizes the noise reduction effect. As shown in fig. 6, the baffle 17 has a rib wall surrounding the outside of the side wall of the communication channel 22, which can provide additional enhanced sound insulation, and a cavity can be defined between the rib wall and the side wall of the communication channel 22 to further reduce noise.

The base 14 is provided at its bottom with support feet 18, the support feet 18 being used to isolate the base 14 from a table top 100 on which the food processor is placed so that a gap is formed between the second channel 21 and the table top 100. Therefore, when the food processor is placed on the table top, the hot air flows out from the second channel 21 and flows around along the gap, so that heat can be prevented from being accumulated at the bottom of the base 14 and cannot be dissipated, and the temperature of the food processor is increased, and the heat dissipation effect is affected. As shown in fig. 7, the bottom of the base 14 is provided with a foot pad mounting hole 181 for mounting the support foot pad 18, and the support foot pad 18 has a certain elasticity, for example, and can provide a certain buffer when the food processor is placed, so as to reduce the collision between the food processor and the table top 100. The support foot pads 18 protrude downwardly relative to the base 14 to isolate the table top 100 from the second channel 21 to ensure smooth discharge of the hot air flow into the air.

The technical solution protected by the present utility model is not limited to the above embodiments, and it should be noted that, the combination of the technical solution of any one embodiment with the technical solution of the other embodiment or embodiments is within the scope of the present utility model. While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

Claims (8)

1. The food processor with optimized noise reduction comprises a machine body, a crushing assembly and a motor, wherein the crushing assembly and the motor are arranged on the machine body, the lower end of the motor is connected with a cooling fan, a wind collecting cavity and a cooling channel communicated with the wind collecting cavity are arranged in the machine body, the cooling fan is suspended in the wind collecting cavity,

the heat dissipation channel comprises a first channel and a second channel, the first channel is positioned on the upper side of the second channel, one sides of the first channel and the second channel are also provided with communication channels, and the communication channels are used for communicating the first channel with the second channel;

the machine body comprises a base and an air duct cover arranged on the base;

the first channel is arranged on the air channel cover, and the second channel is arranged on the base;

or the second channel is arranged on the base, a groove is further formed in the top of the base, and the air channel cover and the groove enclose to form the first channel.

2. A food processor with optimized noise reduction as defined in claim 1, wherein,

the first channel comprises at least two sections of arc-shaped air channels which are connected, and the connection position of each two adjacent sections of arc-shaped air channels is contracted relative to the inner diameter of each arc-shaped air channel; and/or

The end of the first passage communicates with the communication passage, and the end of the first passage is contracted relative to the communication passage.

3. A food processor with optimized noise reduction as defined in claim 1, wherein,

the communication channel is arranged on the base and is positioned at the inlet end of the second channel; or alternatively

The communication channel is arranged on the air channel cover and is positioned at the outlet end of the first channel; or alternatively

The communication channel comprises an upper cavity and a lower cavity which are communicated, the upper cavity is arranged on the air duct cover, and the lower cavity is arranged on the base.

4. A food processor with optimized noise reduction as defined in claim 1, wherein,

the air duct cover comprises a cover body and a cover body, wherein an air collecting cavity is formed in the cover body, and the cover body extends outwards along the lower end of the cover body so that the air collecting cavity and the first channel form a height difference.

5. A food processor with optimized noise reduction as defined in claim 4, wherein,

the base is provided with an upward concave annular silencing cavity, and the annular silencing cavity is communicated with the second channel; the cover body covers and establishes annular amortization chamber upside.

6. A food processor with optimized noise reduction as defined in claim 1, wherein,

the base is provided with a grid plate, the grid plate is arranged between the communication channel and the second channel, one side of the grid plate is provided with an outwards extending rib wall, and a communication hole is formed between two adjacent rib walls and used for communicating the communication channel with the second channel.

7. A food processor with optimized noise reduction as defined in claim 1, wherein,

the base is provided with a sound insulation plate protruding upwards relative to the base, and the sound insulation plate is arranged on the outer side of the communication channel in a surrounding mode; and/or

The bottom of the base is provided with a support foot pad which is used for isolating the base from a table top on which the food processing machine is placed so that a gap is formed between the second channel and the table top.

8. A noise-reducing optimized food processor as defined in any one of the claims 1-7, characterized in that,

the motor is fixed below the crushing assembly, or the machine body is provided with a shell, and the motor is flexibly hoisted in the shell;

the motor outside is equipped with the motor cover, the motor cover lower extreme with the sealed cooperation of wind-collecting chamber.