Food processor capable of optimizing noise reduction

Abstract

The food processor comprises a main machine internally provided with a motor and a smashing cup installed on the main machine, the motor is provided with a motor air outlet, a main machine air outlet is formed in the bottom of the main machine, and an air outlet channel is formed in the main machine; one end of the air outlet duct is communicated with the motor air outlet, the other end of the air outlet duct is communicated with the host air outlet, a buffer cavity used for reducing noise is further arranged between the air outlet duct and the host air outlet, and the radial size of an inlet of the buffer cavity is larger than that of an outlet of the air outlet duct. The buffering cavity is formed between the air outlet duct and the air outlet of the main machine, when airflow enters the large space from the small space, the buffering effect can be generated at the junction, and the buffering effect can weaken propagation of noise; moreover, after the airflow enters the large space, the airflow speed is slowed down, and the reduction of the airflow speed means that a noise source is reduced, so that the noise level can be reduced; the air outlet efficiency and the heat dissipation efficiency can be ensured while noise is reduced through the buffer cavity.

Description

Technical Field

[0001] The utility model relates to the field of food processing machines, in particular to a food processing machine with optimized noise reduction. Background Art

[0002] At present, there are two designs for heat dissipation and air outlet in food processing machines. One is that the outlet end of the heat dissipation channel is directly connected to the air outlet on the main unit for air outlet. In this way, motor noise and wind noise are easily discharged with the airflow during air outlet, resulting in a large noise transmitted to the outside and a poor user experience. Another type of heat dissipation channel has a wind shield structure at the outlet, and the noise accompanying the airflow passing through can be refracted and reflected to reduce the noise level. However, this solution requires a larger heat dissipation channel, which can easily lead to a larger main unit size and affect the miniaturization of the machine. In addition, the wind shield has a certain blocking effect on the airflow, which may cause unsmooth exhaust and is not conducive to improving the heat dissipation efficiency.

[0003] Furthermore, in existing products, the fan at the lower end of the motor is close to the air outlet at the bottom of the casing, the overall height of the exhaust duct is small, and the exhaust path is short, which easily causes noise to be transmitted, resulting in poor noise reduction effect; and, the motor is located in a relatively open space (such as a motor cover). When the airflow flows through this space, not only is the flow rate slow, affecting the heat dissipation efficiency, but also when the airflow flows through, the components downstream are affected by the heat carried by the airflow, and the heat dissipation effect is poor, making it impossible to achieve balanced heat dissipation of the entire motor. Utility Model Content

[0004] In order to solve the technical problems in the prior art that the heat dissipation air duct has high air noise, or that it is difficult to take into account the heat dissipation efficiency while solving the noise problem, the utility model provides a food processing machine with optimized noise reduction, which can effectively solve the problem of high air noise while ensuring the heat dissipation effect.

[0005] The utility model discloses a food processing machine with optimized noise reduction, comprising a main machine with a built-in motor and a grinding cup installed on the main machine, the motor having a motor air outlet, a main machine air outlet being arranged at the bottom of the main machine, an air outlet duct being arranged in the main machine, one end of the air outlet duct being connected with the motor air outlet, and the other end being connected with the main machine air outlet, a buffer cavity for noise reduction being further arranged between the air outlet duct and the main machine air outlet, the radial dimension at the inlet of the buffer cavity being greater than the radial dimension at the outlet of the air outlet duct.

[0006] The food processing machine with optimized noise reduction of the utility model also has the following additional technical features:

[0007] A buffer cover is provided inside the host, a partition is provided inside the buffer cover, a closed buffer cavity is formed below the partition, an open heat dissipation cavity is formed above the partition, the heat dissipation cavity is connected with the interior of the host, the host air outlet includes an upper air outlet hole and a lower air outlet hole, the heat dissipation cavity is connected with the outside through the upper air outlet hole, and the buffer cavity is connected with the outside through the lower air outlet hole.

[0008] The main unit air outlet is arranged on a horizontal side of the buffer cavity, and the airflow turns through the buffer cavity and flows to the main unit air outlet.

[0009] A motor seat is arranged in the main machine, the motor is mounted on the top of the motor seat, a receiving cavity is formed inside the motor seat, and the air outlet duct extends downward from the top of the motor seat to the buffer cavity.

[0010] A motor lower bracket is installed on the top of the motor base, and the motor is installed on the motor lower bracket. A hollow first connecting part extending outward is provided on one side of the motor lower bracket, and one end of the first connecting part is connected to the motor air outlet. A connecting pipe is also provided in the main unit, and the other end of the first connecting part is connected to the connecting pipe to form the air outlet duct.

[0011] The upper end of the connecting pipe is bent toward the lower bracket of the motor to form a first bending portion, and the end of the first connecting portion is provided with an annular rib protruding outward along the circumferential direction. The inner wall of the first bending portion is provided with an annular groove, and the annular rib is embedded in the annular groove to form a limit.

[0012] The lower end of the connecting pipe is bent toward the buffer cavity to form a second bending portion, a buffer cover forming the buffer cavity is provided in the main unit, a hollow second connecting portion is provided on the side of the buffer cover facing the connecting pipe, an annular rib protruding outward is provided on the end of the second connecting portion along the circumferential direction, an annular groove is provided on the inner wall of the second bending portion, and the annular rib is embedded in the annular groove to form a limit.

[0013] The buffer cover comprises a first cover wall connected to the second connection part, and a plurality of air outlet holes are arranged on the first cover wall. Airflow enters the enlarged buffer cavity from the second connection part through the air outlet holes.

[0014] The motor seat is provided with a motor installation cavity, one side of the motor installation cavity is provided with an air guide portion connected thereto, a first vertical plate is provided below the air guide portion, the end of the air guide portion is connected to a U-shaped air guide cover, the U-shaped air guide cover extends downward along the first vertical plate and is enclosed with the first vertical plate to form the air outlet duct.

[0015] A vertically placed power board is also provided in the host, the air outlet duct extends vertically and is located on the outside of the power board, the power board and the air outlet duct are both provided at the rear end of the host, and an operation panel is provided at the front end of the host.

[0016] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0017] 1. The food processing machine with optimized noise reduction of the utility model has a buffer chamber between the air outlet duct and the main machine outlet. When the airflow enters the large space (buffer chamber) from the small space (air outlet duct), a buffer effect will be generated at the junction. This buffering effect can weaken the propagation of noise and gradually attenuate the noise during the propagation process. Moreover, after the airflow enters the large space, the airflow speed slows down. The reduction in flow speed means that the noise source is reduced, thus reducing the noise level. The buffer chamber can act as a muffler, dispersing the noise source and reducing the intensity of the noise, so that the noise finally transmitted to the outside is effectively reduced, which is conducive to improving the user experience. Moreover, while using the buffer chamber to reduce noise, it does not affect the air outlet, and the air outlet efficiency and heat dissipation efficiency can be ensured.

[0018] 2. As a preferred embodiment, a buffer cover is provided in the host, and a partition is provided in the buffer cover, a closed buffer cavity is formed under the partition, and an open heat dissipation cavity is formed above the partition, the heat dissipation cavity is connected with the interior of the host, and the air outlet of the host comprises an upper air outlet hole and a lower air outlet hole, the heat dissipation cavity is connected with the outside through the upper air outlet hole, and the buffer cavity is connected with the outside through the lower air outlet hole; thus, the heat dissipation cavity and the buffer cavity can be formed simultaneously by adopting the buffer cover, when a part of hot air flow remains in the host, this part of hot air flow can be discharged through the upper air outlet hole through the heat dissipation cavity, and the main hot air in the air outlet duct can be discharged through the lower air outlet hole through the buffer cavity, so that the host can fully dissipate heat and improve the heat dissipation effect; moreover, the path formed by the air outlet duct, the buffer cover and the air outlet of the host uses fewer components and is compactly arranged, which is conducive to improving the space utilization.

[0019] As a preferred embodiment of the present embodiment, the main engine air outlet is arranged on a horizontal side of the buffer cavity, and the airflow turns through the buffer cavity and flows to the main engine air outlet; thereby, the airflow can turn at a certain angle when outflowing, the airflow flow path can be extended, and the friction of the airflow in the channel can be increased, which can further reduce the noise, thereby weakening the noise transmitted to the outside.

[0020] 3. As a preferred embodiment, a motor seat is provided in the main unit, the motor is installed on the top of the motor seat, a receiving cavity is formed inside the motor seat, and the air outlet duct extends downward from the top of the motor seat to the buffer cavity; thus, the air outlet duct is arranged in a certain axial space, making full use of the height of the motor seat, which is beneficial to reducing the horizontal size of the main unit, and the exhaust path is longer, which is beneficial to improving the noise reduction effect; the motor of the present application is far away from the bottom of the main unit, and the air outlet duct adopts a smaller-sized pipe structure, which is beneficial to speed up the flow of air along the air outlet duct, which can improve the heat dissipation efficiency, and even if the airflow flows to the enlarged buffer cavity, since the buffer cavity is far away from the motor and other components in the main unit, the heat brought to the buffer cavity by the airflow will not affect other components, ensuring the heat dissipation effect. In addition, the receiving cavity provided in the motor seat can be used to accommodate structures such as residual water boxes, further improving the space utilization rate and realizing a compact arrangement between structures.

[0021] As a preferred embodiment of the present embodiment, a motor lower bracket is installed on the top of the motor base, the motor is installed on the motor lower bracket, and one side of the motor lower bracket is provided with a hollow first connecting part extending outward, one end of the first connecting part is connected to the motor air outlet, and a connecting pipe is also provided in the main unit, and the other end of the first connecting part is connected to the connecting pipe to form the air outlet duct; therefore, during the operation of the machine, the heat of the motor can flow into the air outlet duct after flowing out through the motor air outlet, and the air outlet duct can be formed by utilizing the structure on the motor lower bracket and setting a connecting pipe, which has a simple configuration and can reduce costs.

[0022] Furthermore, the upper end of the connecting pipe is bent toward the lower bracket of the motor to form a first bending portion, and the end of the first connecting portion is provided with an annular rib protruding outward along the circumferential direction, and the inner wall of the first bending portion is provided with an annular groove, and the annular rib is embedded in the annular groove to form a limit; thus, the annular rib of the first connecting portion cooperates with the annular groove of the first bending portion to strengthen the connection effect between the lower bracket of the motor and the connecting pipe, and can prevent the connecting pipe from being separated from the first connecting portion due to pressure shock during exhaust, thereby ensuring smooth and reliable exhaust.

[0023] Furthermore, the lower end of the connecting pipe is bent toward the buffer cavity to form a second bending portion, and a buffer cover forming the buffer cavity is provided in the main unit, and a hollow second connecting portion is provided on the side of the buffer cover facing the connecting pipe, and an annular rib protruding outward is provided on the end of the second connecting portion along the circumferential direction, and an annular groove is provided on the inner wall of the second bending portion, and the annular rib is embedded in the annular groove to form a limit. Therefore, the connection effect between the connecting pipe and the buffer cover can be strengthened by cooperating with the annular rib of the second connecting portion and the annular groove of the second bending portion, and the two can be prevented from being separated and affecting the exhaust.

[0024] Furthermore, the buffer cover includes a first cover wall connected to the second connecting part, and a plurality of air outlet holes are provided on the first cover wall, and the airflow enters the enlarged buffer cavity from the second connecting part through the air outlet holes; thus, the airflow enters the large space (buffer cavity) from the small space (second connecting part) and passes through the plurality of air outlet holes, thereby realizing multiple noise reductions (buffer noise reduction, diffusion noise reduction, small hole noise reduction, etc.), ensuring the noise reduction effect.

[0025] 4. As a preferred embodiment, the motor base is provided with a motor mounting cavity, one side of the motor mounting cavity is provided with an air guide portion connected thereto, a first vertical plate is provided below the air guide portion, the end of the air guide portion is connected to a U-shaped air guide cover, the U-shaped air guide cover extends downward along the first vertical plate and is enclosed by the first vertical plate to form the air outlet duct; thereby, the heat of the motor flows into the motor mounting cavity through the motor air outlet, and then flows into the air outlet duct through the air guide portion and then is discharged. This scheme expands the formation method of the air outlet duct, utilizes a part of the structure of the motor base to form the air outlet duct, and increases the flexibility of structural design and processing.

[0026] 5. As a preferred embodiment, a vertically placed power board is further provided in the main unit, the air outlet duct extends vertically and is located on the outside of the power board, the power board and the air outlet duct are both arranged at the rear end of the main unit, and an operation panel is arranged at the front end of the main unit; thus, the heat of the motor and the heat of the power board are concentrated on the rear side of the main unit for heat dissipation, which can make the temperature of the front end of the main unit lower, and the user will not be scalded when touching the operation panel, which can improve the user experience; in addition, the heat dissipation module is concentrated at the rear end of the main unit, leaving more space at the front end of the main unit to arrange the slurry cup, etc., so that the internal and external components of the main unit are reasonably distributed, which promotes the compact layout of the structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0028] Figure 1 This is a schematic diagram of the appearance of a food processor according to one embodiment of the present application.

[0029] Figure 2 for Figure 1 A partial cutaway diagram of a food processor.

[0030] Figure 3 This is a schematic structural diagram of a buffer cover according to an embodiment of the present application.

[0031] Figure 4 for Figure 3 Schematic diagram of the buffer cover from another perspective.

[0032] Figure 5 It is a schematic diagram of the extended arrangement of the air outlet duct in one embodiment of the present application.

[0033] Figure 6 This is a schematic diagram of the components of a motor lower bracket, a connecting pipe and a buffer cover in one embodiment of the present application.

[0034] Figure 7 This is a schematic diagram of the structure of a motor base according to one embodiment of the present application.

[0035] Figure 8 A schematic diagram of the layout of an air outlet duct and a power board in one embodiment of the present application.

[0036] Reference numerals:

[0037] 10. Host; 11. Host air outlet; 12. Buffer cavity; 13. Buffer cover; 131. Partition; 132. Heat dissipation cavity; 111. Upper air outlet; 112. Lower air outlet; 133. First cover wall; 134. Second cover wall; 135. Third cover wall; 14. Motor seat; 141. Accommodating cavity; 136. Air outlet hole; 142. Top support seat; 143. First vertical plate; 144. Second vertical plate; 15. Lower bracket of motor; 151. First connecting part; 16. Connecting pipe; 161. First bending part; 162. Vertical part; 163. Second bending part; 17. Annular rib; 137. Second connecting part; 145. Connecting port; 146. Air guide part; 18. U-shaped air guide cover; 19. Power board; 20. Host air inlet; 21. Air outlet duct. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0039] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0040] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0041] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through a transition structure, but are only connected to form a whole through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0045] like Figures 1 to 8As shown, the present application provides a food processor with optimized noise reduction, including a main unit 10 with a built-in motor and a grinding cup installed on the main unit 10, the motor having a motor air outlet, a main unit air outlet 11 being provided at the bottom of the main unit 10, an air outlet duct 21 being provided in the main unit 10, one end of the air outlet duct 21 being connected to the motor air outlet, and the other end being connected to the main unit air outlet 11, a buffer chamber 12 for noise reduction being further provided between the air outlet duct 21 and the main unit air outlet 11, the radial dimension of the buffer chamber 12 at the inlet being larger than the radial dimension of the air outlet duct 21 at the outlet.

[0046] The food processor of the present application is suitable for both hand-washable and non-hand-washable products. The main purpose is to optimize the heat dissipation duct structure. Under the premise of ensuring the heat dissipation effect, the noise during the air outlet can be effectively reduced, and the overall working noise of the machine can be reduced. The grinding cup can be detachably mounted on the host 10 or not. The motor can be a conventional brushed motor or a brushless motor. Since the present application is mainly to improve the air outlet structure, the air inlet structure is not limited. The air inlet structure available in the prior art can be applied to the solution of the present application. By setting a buffer chamber 12 between the air outlet duct 21 and the main unit air outlet 11, when the airflow enters the large space (buffer chamber 12) from the small space (air outlet duct 21), a buffer effect will be generated at the junction. This buffering effect can weaken the propagation of noise, so that the noise gradually decays during the propagation process (i.e., buffering noise reduction); and, after the airflow enters the large space, the airflow speed slows down. The reduction in flow speed means that the noise source is reduced, thereby reducing the noise level; the buffer chamber 12 can act as a muffler, which can disperse the noise source and reduce the intensity of the noise (i.e., dispersed noise reduction), so that the noise finally transmitted to the outside is effectively reduced, which is conducive to improving the user experience. In addition, while using the buffer chamber 12 to reduce noise, it does not affect the air outlet, and can ensure the air outlet efficiency and heat dissipation efficiency.

[0047] The radial dimension of the inlet of the buffer cavity 12 is greater than the radial dimension of the outlet of the air outlet duct 21, which means that there is a change in the cross-sectional area of ​​the end faces of the two components along the air outlet direction, from a smaller channel to a larger channel, which is beneficial to noise reduction. When the space formed by the air outlet duct 21 and the buffer cavity 12 is irregular, it can be further defined that the axial dimension of the inlet of the buffer cavity 12 is greater than the axial dimension of the outlet of the air outlet duct 21.

[0048] As a preferred embodiment of the present application, a buffer cover 13 is provided in the host 10, and a partition 131 is provided in the buffer cover 13. A closed buffer cavity 12 is formed below the partition 131, and an open heat dissipation cavity 132 is formed above the partition 131. The heat dissipation cavity 132 is connected with the interior of the host 10, and the host air outlet 11 includes an upper air outlet hole 111 and a lower air outlet hole 112. The heat dissipation cavity 132 is connected with the outside through the upper air outlet hole 111, and the buffer cavity 12 is connected with the outside through the lower air outlet hole 112.

[0049] like Figure 3 and Figure 4 As shown, a structural example of a buffer cover 13 is given. The buffer cover 13 includes, for example, a first cover wall 133 facing the air outlet duct 21 and a second cover wall 134 and a third cover wall 135 respectively bent and connected to both sides of the first cover wall 133. The first cover wall 133 is connected to the air outlet duct 21, and the second cover wall 134 and the third cover wall 135 can respectively abut against the inner wall of the housing of the host 10 so that the buffer cover 13 and the inner wall of the housing enclose a buffer cavity 12, and the buffer cavity 12 is trumpet-shaped along the airflow direction. Figure 2 As shown, the partition 131 divides the space surrounded by the buffer cover 13 into two parts, an upper part and an lower part. When a part of the hot air flow remains inside the host 10, this part of the hot air flow can be discharged through the heat dissipation cavity 132 through the upper air outlet 111, and the main hot air flow in the air outlet duct 21 passes through the buffer cavity 12 and is discharged through the lower air outlet 112, which can achieve full heat dissipation of the host 10 and improve the heat dissipation effect. Among them, the partition 131 can be a flat structure or a curved structure, for example Figure 2 The middle partition plate 131 is convex toward the heat dissipation cavity 132, so that the space of the buffer cavity 12 becomes larger. The upper air outlet 111 and the lower air outlet 112 both include a plurality of small holes, which are beneficial to noise reduction while dissipating heat.

[0050] It is understandable that in other embodiments, the buffer cover 13 may also adopt other structures, such as a conventional cylindrical pipe structure, the interior of the pipe may be separated by a partition 131, and an opening may be provided on the top wall of the pipe to communicate with the interior of the host 10.

[0051] Further, such as Figure 1 and Figure 2 As shown, the main unit air outlet 11 is arranged on the side wall of the bottom of the housing, and the main unit air outlet 11 is arranged on the horizontal side of the buffer cavity 12, and the airflow turns through the buffer cavity 12 and flows to the main unit air outlet 11. That is, when the airflow is discharged through the buffer cavity 12, the airflow turns, for example, 90 degrees or more than 90 degrees and then flows to the main unit air outlet 11 and is discharged, which can extend the airflow flow path, increase the friction of the airflow in the channel, and further reduce the noise, thereby weakening the noise transmitted to the outside.

[0052] Furthermore, a motor base 14 is provided in the main unit 10, and the motor is installed on the top of the motor base 14. A accommodating cavity 141 is formed inside the motor base 14. The air outlet duct 21 extends downward from the top of the motor base 14 to the buffer cavity 12, and a plurality of air outlet holes 136 are provided between the outlet of the air outlet duct 21 and the entrance of the buffer cavity 12.

[0053] like Figure 5 As shown, the air outlet duct 21 is arranged in a certain axial space, making full use of the height of the motor base 14, which is beneficial to reducing the horizontal size of the main unit, and the exhaust path is longer, which is beneficial to improving the noise reduction effect; the motor of the present application is far away from the bottom of the main unit, and the air outlet duct adopts a smaller-sized pipe structure, which is beneficial to speed up the flow of air along the air outlet duct, which can improve the heat dissipation efficiency, and even if the airflow flows to the enlarged buffer cavity, since the buffer cavity is far away from the motor and other components in the main unit, the heat brought to the buffer cavity by the airflow will not affect other components, ensuring the heat dissipation effect. Furthermore, by providing a plurality of air outlet holes 136 between the air outlet duct 21 and the buffer cavity 12, small hole noise reduction can be achieved, which is beneficial to further improve the noise reduction effect. In addition, the motor base 14 is provided with a housing cavity 141 that can be used to accommodate structures such as residual water boxes, further improving the space utilization rate and realizing a compact arrangement between structures.

[0054] Among them, Figure 7 As shown, the motor seat 14 includes, for example, a top support seat 142 for supporting the motor and a side structure extending downward relative to the top support seat 142. The side structure includes, for example, a first vertical plate 143, a second vertical plate 144 and a third vertical plate (not shown in the figure) surrounding the top support seat 142 on three sides. Then, the bottom of the top support seat 142 and the side structure are enclosed to form a receiving cavity 141. Preferably, the motor is a brushless motor, which has a smaller axial dimension, so that there is a larger space below the motor. The receiving cavity 141 can, for example, accommodate a residual water box. Since there is sufficient space below, a larger residual water box can be used, which can improve the effect of draining wastewater.

[0055] Furthermore, the formation of the air outlet duct 21 can be achieved in at least the following ways.

[0056] In one embodiment, a motor lower bracket 15 is installed on the top of the motor base 14, and the motor is installed on the motor lower bracket 15. One side of the motor lower bracket 15 is provided with a hollow first connecting part 151 extending outward, and one end of the first connecting part 151 is connected to the motor air outlet. A connecting pipe 16 is also provided in the main unit 10, and the other end of the first connecting part 151 is connected to the connecting pipe 16 to form the air outlet duct 21.

[0057] Specifically, the motor lower bracket 15 is installed on the motor base 14, and the two can be installed by means such as screw connection, plug connection, etc. During the operation of the machine, the heat of the motor flows out through the motor outlet and then flows into the air outlet duct 21. The air outlet duct 21 can be formed by using the structure on the motor lower bracket 15 and setting the connecting pipe 16, which is simple in configuration and can reduce costs.

[0058] Furthermore, the upper end of the connecting pipe 16 is bent toward the motor lower bracket 15 to form a first bending portion 161, and the end of the first connecting portion 151 is circumferentially provided with an annular rib 17 protruding outward, and the inner wall of the first bending portion 161 is provided with an annular groove, and the annular rib 17 is embedded in the annular groove to form a limit.

[0059] like Figure 6 As shown, the connecting pipe 16 includes a first bending portion 161, a vertical portion 162 and a second bending portion 163. The use of a bent pipe can not only realize the connection between components in different directions, but also facilitate noise reduction during the flow of air. The channel cross-sectional areas of the first bending portion 161, the vertical portion 162 and the second bending portion 163 are, for example, that the cross-sectional area of ​​the vertical portion 162 is greater than the cross-sectional area of ​​the first bending portion 161, and the cross-sectional area of ​​the vertical portion 162 is greater than the cross-sectional area of ​​the second bending portion 163. As a result, the airflow flows along a small space-large space-small space, which can further enhance the noise reduction effect.

[0060] When the connecting pipe 16 is installed, the first bending portion 161 is sleeved on the outside of the first connecting portion 151. The annular rib 17 of the first connecting portion 151 cooperates with the annular groove of the first bending portion 161 to strengthen the connection effect between the motor lower bracket 15 and the connecting pipe 16, and prevent the connecting pipe 16 from being separated from the first connecting portion 151 due to pressure shock during exhaust, thereby ensuring smooth and reliable exhaust. Preferably, a sealing ring can be provided between the first bending portion 161 and the first connecting portion 151 to prevent air leakage.

[0061] Furthermore, the lower end of the connecting pipe 16 is bent toward the buffer cavity 12 to form a second bending portion 163, and a buffer cover 13 forming the buffer cavity 12 is provided in the main unit 10, and a hollow second connecting portion 137 is provided on the side of the buffer cover 13 facing the connecting pipe 16, and an annular rib 17 protruding outward is provided at the end of the second connecting portion 137 along the circumferential direction, and an annular groove is provided on the inner wall of the second bending portion 163, and the annular rib 17 is embedded in the annular groove to form a limit.

[0062] During installation, the second bending portion 163 is sleeved on the outer side of the second connecting portion 137, and the annular rib 17 of the second connecting portion 137 cooperates with the annular groove of the second bending portion 163 to strengthen the connection effect between the connecting pipe 16 and the buffer cover 13, and prevent the two from being separated and affecting the exhaust. Preferably, a sealing ring can be provided between the second bending portion 163 and the second connecting portion 137 to prevent air leakage.

[0063] Furthermore, the buffer cover 13 includes a first cover wall 133 connected to the second connection portion 137 , and a plurality of air outlet holes 136 are provided on the first cover wall 133 , and air flows from the second connection portion 137 through the air outlet holes 136 into the enlarged buffer cavity 12 .

[0064] like Figure 3 or Figure 4 As shown, by providing a plurality of air outlet holes 136, the holes can be used to reduce noise, which is conducive to further improving the noise reduction effect. In this embodiment, the second connecting portion 137 is an axial through structure, and the air outlet holes 136 are provided on the first cover wall 133. It can be understood that in other embodiments, when the end surface of the second connecting portion 137 facing the first cover wall 133 has a connecting wall, and the first cover wall 133 has a connecting opening surrounding the connecting wall, the air outlet holes 136 can be provided on the connecting wall.

[0065] Therefore, the airflow enters the large space (buffer cavity 12) from the small space (second connection part 137) and passes through multiple air outlet holes 136, which can achieve multiple noise reductions (buffer noise reduction, diffusion noise reduction, small hole noise reduction, etc.) and ensure the noise reduction effect.

[0066] In this embodiment, the connecting pipe 16 may be a corrugated pipe or other hard pipe fittings, which is not limited in this application.

[0067] In another embodiment, the motor base 14 is provided with a motor mounting cavity, one side of the motor mounting cavity is provided with an air guide portion 146 connected thereto, a first vertical plate 143 is provided below the air guide portion 146, the end of the air guide portion 146 is connected to a U-shaped air guide cover 18, and the U-shaped air guide cover 18 extends downward along the first vertical plate 143 and is enclosed with the first vertical plate 143 to form the air outlet duct 21.

[0068] like Figure 7 and Figure 8 As shown, in this embodiment, the motor lower bracket 15 can be omitted, and the motor is installed in the motor mounting cavity. The motor mounting cavity is provided with a connecting port 145 corresponding to the motor air outlet. After the heat of the motor flows out through the motor air outlet, it can flow into the air guide part 146 through the connecting port 145, and then flow into the air outlet duct 21 for discharge.

[0069] In this embodiment, a U-shaped air guide cover 18 is provided on the first vertical plate 143 to enclose and form the air outlet duct 21, thereby increasing the flexibility of structural design and processing.

[0070] On the basis of the above scheme, as a preferred embodiment of the present application, a vertically placed power board 19 is also provided in the host 10, the air outlet duct 21 extends vertically and is located on the outside of the power board 19, the power board 19 and the air outlet duct 21 are both arranged at the rear end of the host 10, and an operation panel is provided at the front end of the host 10.

[0071] like Figure 8 As shown, the heat of the motor and the heat of the power board 19 are concentrated on the rear side of the main unit 10 for heat dissipation, which can make the temperature of the front end of the main unit 10 lower, and the user will not be burned when touching the operation panel, which can improve the user experience; in addition, the heat dissipation module is concentrated at the rear end of the main unit 10, leaving more space at the front end of the main unit 10 for arranging the slurry receiving cup, etc., so that the internal and external components of the main unit 10 are reasonably distributed, which promotes the compact layout between the structures.

[0072] Furthermore, a host air inlet 20 is provided at the bottom of the host 10, and the host air inlet 20 is arranged further back than the power board 19, so that the external airflow flows into the host 10 through the host air inlet 20 to dissipate the heat of the power board 19, and then the airflow flows upward to further dissipate the heat of the motor, and finally the hot air flow can be discharged through the air outlet duct 21-host air outlet 11, completing the entire heat dissipation process, while realizing the heat dissipation of the power board 19 and the motor, and under the action of the buffer cavity 12, the wind outlet noise can be effectively improved, and the noise reduction effect is enhanced.

[0073] The technical solution protected by the present utility model is not limited to the above-mentioned embodiments. It should be pointed out that the combination of the technical solution of any embodiment with the technical solution of one or more other embodiments is within the protection scope of the present utility model. Although the present utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to it based on the present utility model. Therefore, these modifications or improvements made without departing from the spirit of the present utility model are within the scope of protection claimed by the present utility model.

Claims

1. A food processor with optimized noise reduction, comprising a main machine with a built-in motor and a grinding cup installed on the main machine, wherein the motor has a motor air outlet, characterized in that: A host air outlet is provided at the bottom of the host, and an air outlet duct is provided inside the host. One end of the air outlet duct is connected to the motor air outlet, and the other end is connected to the host air outlet. A buffer cavity for noise reduction is also provided between the air outlet duct and the host air outlet, and the radial dimension of the buffer cavity at the inlet is greater than the radial dimension at the outlet of the air outlet duct.

2. A food processing machine with optimized noise reduction according to claim 1, characterized in that: A buffer cover is provided inside the host, a partition is provided inside the buffer cover, a closed buffer cavity is formed below the partition, an open heat dissipation cavity is formed above the partition, the heat dissipation cavity is connected with the interior of the host, the host air outlet includes an upper air outlet hole and a lower air outlet hole, the heat dissipation cavity is connected with the outside through the upper air outlet hole, and the buffer cavity is connected with the outside through the lower air outlet hole.

3. A food processing machine with optimized noise reduction according to claim 2, characterized in that: The main unit air outlet is arranged on a horizontal side of the buffer cavity, and the airflow turns through the buffer cavity and flows to the main unit air outlet.

4. The food processing machine with optimized noise reduction according to claim 1, characterized in that: A motor seat is arranged in the main machine, the motor is mounted on the top of the motor seat, a receiving cavity is formed inside the motor seat, and the air outlet duct extends downward from the top of the motor seat to the buffer cavity.

5. A food processing machine with optimized noise reduction according to claim 4, characterized in that: A motor lower bracket is installed on the top of the motor base, and the motor is installed on the motor lower bracket. A hollow first connecting part extending outward is provided on one side of the motor lower bracket, and one end of the first connecting part is connected to the motor air outlet. A connecting pipe is also provided in the main unit, and the other end of the first connecting part is connected to the connecting pipe to form the air outlet duct.

6. A food processing machine with optimized noise reduction according to claim 5, characterized in that: The upper end of the connecting pipe is bent toward the lower bracket of the motor to form a first bending portion, and the end of the first connecting portion is provided with an annular rib protruding outward along the circumferential direction. The inner wall of the first bending portion is provided with an annular groove, and the annular rib is embedded in the annular groove to form a limit.

7. The food processing machine with optimized noise reduction according to claim 5, characterized in that: The lower end of the connecting pipe is bent toward the buffer cavity to form a second bending portion, a buffer cover forming the buffer cavity is provided in the main unit, a hollow second connecting portion is provided on the side of the buffer cover facing the connecting pipe, an annular rib protruding outward is provided on the end of the second connecting portion along the circumferential direction, an annular groove is provided on the inner wall of the second bending portion, and the annular rib is embedded in the annular groove to form a limit.

8. The food processing machine with optimized noise reduction according to claim 7, characterized in that: The buffer cover comprises a first cover wall connected to the second connection part, and a plurality of air outlet holes are arranged on the first cover wall. Airflow enters the enlarged buffer cavity from the second connection part through the air outlet holes.

9. The food processing machine with optimized noise reduction according to claim 4, characterized in that: The motor seat is provided with a motor installation cavity, one side of the motor installation cavity is provided with an air guide portion connected thereto, a first vertical plate is provided below the air guide portion, the end of the air guide portion is connected to a U-shaped air guide cover, the U-shaped air guide cover extends downward along the first vertical plate and is enclosed with the first vertical plate to form the air outlet duct.

10. The food processing machine with optimized noise reduction according to claim 1, characterized in that: A vertically placed power board is also provided in the host, the air outlet duct extends vertically and is located on the outside of the power board, the power board and the air outlet duct are both provided at the rear end of the host, and an operation panel is provided at the front end of the host.

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