Base assembly and food processor

Abstract

The present invention discloses a base assembly and a food processor, relating to the technical field of household appliances, which includes a base housing, a motor, a fan, a motor cover and a fan cover; the base housing is provided with an air inlet and an air outlet, the motor cover is arranged inside the base housing, and an air inlet duct communicating with the air inlet is defined between the motor cover and the base housing, the motor is accommodated in the motor cover, the fan is accommodated in the fan cover, the fan cover and the motor cover are connected and jointly define an air outlet duct communicating with the air outlet, the motor cover includes an upper cover body and a lower cover body, a ventilation opening communicating the air inlet duct and the air outlet duct is opened on the upper cover body, and the lower cover body is hermetically connected to the upper cover body and the fan cover respectively. In the food processor of the present invention, the motor and the fan are completely wrapped by the motor cover and the fan cover which are hermetically connected, so that the motor cover and the fan cover jointly form a cavity with high tightness, which can effectively reduce the noise radiated by the motor and the fan outward and lower the working noise of the food processor.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly relates to a base assembly and a food processor. Background Art

[0002] During the use of a food processor, the motor in the base generates relatively large vibration noise. In the existing food processors, the motor is usually sound-insulated by a motor cover. In order to meet the heat dissipation requirements of the motor, the traditional motor cover structure only wraps part of the motor structure and cannot prevent the motor from radiating noise outward. Therefore, the sound-insulation effect is poor. Summary of the Invention

[0003] An object of the present invention is to at least solve one of the technical problems existing in the prior art, and provide a base assembly and a food processor, which can further reduce the noise during operation.

[0004] According to a first aspect of the present invention, there is provided a base assembly, including

[0005] a base housing, provided with an air inlet and an air outlet;

[0006] a motor cover, disposed inside the base housing, and an air inlet duct communicating with the air inlet is defined between the motor cover and the base housing;

[0007] a fan cover, disposed below the motor cover, and an air outlet duct communicating with the air outlet is jointly defined by the fan cover and the motor cover;

[0008] a motor, accommodated inside the motor cover, and a fan accommodated inside the fan cover is connected below the motor;

[0009] wherein, the motor cover includes an upper cover body and a lower cover body, a ventilation opening communicating the air inlet duct and the air outlet duct is formed on the upper cover body, and the lower cover body is hermetically connected to the upper cover body and the fan cover respectively.

[0010] Advantageous Effects: The base assembly completely wraps the motor and the fan with the upper cover body, the lower cover body and the fan cover which are hermetically connected, so that the motor cover and the fan cover jointly form a cavity with high tightness, which can effectively reduce the noise radiated outward by the motor and the fan and reduce the working noise of the food processor; moreover, an air inlet duct is defined between the base housing and the motor cover, and the air outlet duct is jointly defined by the fan cover and the motor cover and is independent and has good tightness. The two ducts are only communicated through the ventilation opening formed on the upper cover body, optimizing the path of the ducts and improving the heat dissipation efficiency of the ducts for the motor.

[0011] According to the first aspect of the present invention, a surrounding wall extends downward from the bottom of the fan cover, and a first sound-absorbing cavity is formed by enclosing the bottom wall of the fan cover, the surrounding wall, and the bottom of the base housing.

[0012] According to the first aspect of the present invention, the lower cover body includes an upper edge portion, a lower edge portion, an outer peripheral portion, and an inner peripheral portion; at least a part of the upper edge portion and at least a part of the lower edge portion, and the outer peripheral portion and the inner peripheral portion enclose a second sound-absorbing cavity.

[0013] According to the first aspect of the present invention, mounting pillars are provided on the top of the base housing, the motor has a connecting portion that cooperates with the mounting pillars, the connecting portion is located inside the upper cover body and is provided with a first mounting hole, the upper cover body is provided with a second mounting hole, and the mounting pillars sequentially pass through the second mounting hole and the first mounting hole from top to bottom and are fixedly connected to the lower cover body.

[0014] According to the first aspect of the present invention, a first washer is sleeved on the mounting pillar, the first washer is axially provided with a central hole that cooperates with the mounting pillar, the first washer passes through the first mounting hole, and one end of the first washer abuts against the upper cover body, and the other end of the first washer abuts against the lower cover body.

[0015] According to the first aspect of the present invention, the upper end of the first washer is provided with a first boss, and the lower end is provided with a second boss. The first boss is clamped between the upper cover body and the connecting portion, and the second boss is clamped between the lower cover body and the connecting portion.

[0016] According to the first aspect of the present invention, an elastic cavity is provided inside the first boss or the second boss.

[0017] According to the first aspect of the present invention, the lower cover body includes an upper edge portion that abuts and cooperates with the second boss, the upper edge portion protrudes upwardly with a protrusion, and the second boss is recessed inwardly with a groove that cooperates with the protrusion.

[0018] According to the first aspect of the present invention, the mounting pillar includes a first column body connected to the base housing and a second column body connected to the first column body. A second washer is sleeved on the second column body, the second washer passes through the second mounting hole, and the upper end of the second washer is clamped between the upper cover body and the first column body.

[0019] According to the first aspect of the present invention, the connecting portion is provided around the periphery of the motor, the first mounting hole includes at least four, and at least four of the first mounting holes are evenly distributed along the circumferential direction of the connecting portion;

[0020] Or at least four of the connecting parts are arranged at intervals on the periphery of the motor, and the at least four connecting parts are evenly distributed along the circumferential direction of the motor. Each of the connecting parts is correspondingly provided with a first mounting hole.

[0021] According to the first aspect of the present invention, the air inlet and the air outlet are respectively arranged on the bottom wall of the machine base housing.

[0022] According to the second aspect of the present invention, there is provided a food processor, comprising the machine base assembly described in any one of the above.

[0023] Beneficial effects: The food processor adopts the above-mentioned machine base assembly, which reduces the amount of noise radiated outward by the motor and the fan, further reduces the noise during operation, and improves the user experience. Description of the drawings

[0024] The present invention will be further described below in conjunction with the drawings and embodiments;

[0025] Figure 1 Is a perspective view of a food processor according to an embodiment of the present invention;

[0026] Figure 2 Is a perspective view of a machine base assembly according to an embodiment of the present invention;

[0027] Figure 3 Is Figure 2 An exploded view of;

[0028] Figure 4 Is Figure 2 A top view of;

[0029] Figure 5 Is Figure 4 A three-dimensional sectional view of the middle section A-A in;

[0030] Figure 6 Is Figure 4 A three-dimensional sectional view of the middle section B-B in;

[0031] Figure 7 Is Figure 4 A sectional view of the middle section C-C in;

[0032] Figure 8 Is Figure 7 An enlarged view of D in;

[0033] Figure 9 Is Figure 2 A sectional view of the first washer in;

[0034] Figure 10 Is Figure 2 A top view of the fan cover in.

[0035] Reference numerals:

[0036] Base assembly 10; coupling 11;

[0037] Base housing 100; air inlet 110; air outlet 120; grille structure 121; air inlet duct 130; mounting pillar 140; third mounting hole 141; first cylinder 142; second cylinder 143; locking member 150;

[0038] Motor 200; fan 210; connecting portion 220; first mounting hole 221;

[0039] Motor cover 300; air outlet duct 310; ventilation opening 320; second sound absorption cavity 330; upper edge portion 331; fourth mounting hole 3311; protrusion 3312; lower edge portion 332; outer peripheral portion 333; inner peripheral portion 334; micro-perforations 335; upper cover body 350; third gasket 351; conical boss 352; second mounting hole 354; lower cover body 360; first gasket 361;

[0040] Fan cover 400; second gasket 410; surrounding wall 420; first sound absorption cavity 430;

[0041] First washer 500; central hole 510; first boss 520; second boss 530; groove 531; elastic cavity 540; second washer 550. Detailed implementation manners

[0042] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0043] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0045] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0046] Referring to Figure 1 As shown, a food processor according to an embodiment of the present invention can be a wall breaker, a blender, a juicer, a soymilk machine, etc., and it includes a base assembly 10 and a cup body 20. The cup body 20 is used to hold the food to be processed. A blade (not shown in the figure) is provided at the position of the axis of the cup body 20 and at the bottom. Referring to Figure 2 As shown, the base assembly 10 provides power for the blade through a coupling 11, so as to realize the processing of the food.

[0047] Referring to Figure 3 、 Figure 4 and Figure 5 As shown, a base assembly 10 according to an embodiment of the present invention includes a base housing 100, a motor 200, a motor cover 300, and a fan cover 400. The motor cover 300 is provided inside the base housing 100. A fan 210 is connected below the motor 200. The motor 200 is installed in the base housing 100 and is completely accommodated in the motor cover 300. The fan 210 is completely accommodated in the fan cover 400. It can be understood that the motor cover 300 and the fan cover 400 are connected and used to seal and wrap noise sources such as the motor 200 and the fan 210. It has good sealing performance, can effectively reduce the cross-sectional area of the noise propagation channels of the motor 200 and the fan 210, increase the sound insulation amount, reduce the noise radiation amount of the motor 200 and the fan 210 to the outside, and further reduce the working noise of the food processor. Referring to Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, the base housing 100 is provided with an air inlet 110 and an air outlet 120. An air inlet duct 130 communicating with the air inlet 110 is defined between the motor cover 300 and the base housing 100. The motor cover 300 is connected to the fan cover 400 and together they define an air outlet duct 310 communicating with the air outlet 120. It should be noted that the air inlet duct 130 is formed by the space enclosed by the inner wall of the base housing 100 and the outer wall of the motor cover 300, and the air outlet duct 310 is formed by the communication of the inner cavity of the motor cover 300 and the inner cavity of the fan cover 400. The air inlet duct 130 and the air outlet duct 310 are independent of each other and have good sealing performance, avoiding mutual interference and preventing air leakage. Further, the motor cover 300 includes an upper cover body 350 and a lower cover body 360. A ventilation opening 320 communicating the air inlet duct 130 and the air outlet duct 310 is provided on the upper cover body 350. The lower cover body 360 is hermetically connected to the upper cover body 350 and the fan cover 400 respectively. The upper cover body 350, the lower cover body 360 and the fan cover 400 together form a structure that hermetically wraps the motor 200 and the fan 210. The motor 200 and the fan 210 are located on the air outlet duct 310. The air inlet duct 130 and the air outlet duct 310 are communicated through the ventilation opening 320 to realize air guiding. The air guiding area of the air inlet duct 130 is large and the air guiding speed is fast, so that the cold air entering from the air inlet 110 can quickly blow into the interior of the motor 200 through the ventilation opening 320 for heat dissipation. Moreover, multiple groups of ventilation openings 320 can be arranged along the circumferential wall of the upper cover body. The multiple groups of ventilation openings 320 can achieve an all-round air guiding effect, enabling the cold air to act on the motor 200 in all directions, further optimizing the paths of the air inlet duct 130 and the air outlet duct 310, improving the heat dissipation efficiency of the motor 200, and reducing the power consumption of the motor 200. Furthermore, in this embodiment, the ventilation opening 320 is provided at the coil part (not shown in the figure) of the motor 200 with strict temperature rise requirements, so that the cold air entering from the air inlet duct 130 can pass through the motor 200 from top to bottom in the air outlet duct 310 for heat dissipation, maximizing the utilization efficiency of the fan 210, further improving the heat dissipation efficiency, and guiding the heat to be quickly discharged from the air outlet duct 310 to prevent the motor 200 from overheating.

[0048] Referring to Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the air inlet 110 and the air outlet 120 are respectively arranged on the bottom wall of the machine base housing 100, and the ventilation opening 320 is arranged on the circumferential wall near the top of the upper cover 350, so that the air inlet duct 130 and the air outlet duct 310 form channels that penetrate vertically through the machine base housing 100 respectively. The air inlet 110 and the air outlet 120 are arranged offset from each other in the circumferential direction of the machine base housing 100, making the air inlet 110 and the air outlet 120 independent of each other, avoiding the interference between the air flow at the air inlet 110 and the air flow at the air outlet 120, and improving the heat dissipation efficiency. Further, there are two air inlets 110 symmetrically arranged along the center of the machine base housing 100, and the air outlet 120 is arranged offset from the air inlet 110 by 90 degrees in the circumferential direction of the machine base housing 100, that is, a state of air intake on the left and right sides of the bottom wall of the machine base housing 100 and air outlet on the front side is formed, increasing the air volume of the air intake, improving the air intake efficiency, and at the same time maximizing the avoidance of interference between the air inlet 110 and the air outlet 120, and improving the heat dissipation efficiency. Moreover, arranging the air outlet 120 on the bottom wall of the machine base housing 100 can also prevent the hot air from directly blowing towards the user and affecting the user experience.

[0049] Referring to Figure 5 As shown, a surrounding wall 420 extends downward from the bottom of the fan cover 400, and the bottom wall of the fan cover 400, the surrounding wall 420 and the bottom of the machine base housing 100 enclose a first sound-absorbing cavity 430. It can be understood that the first sound-absorbing cavity 430 is located below the fan 210, and its main function is to deal with the noise generated by the fan 210. The structure of the first sound-absorbing cavity 430 can be various, such as a perforated sound-absorbing structure, a reactive muffler or a structure filled with porous sound-absorbing materials. Specifically, if the first sound-absorbing cavity 430 adopts a perforated sound-absorbing structure, different specifications and parameters need to be designed for the perforation size according to the blade frequency generated by the fan 210 with different numbers of blades. Its sound-absorbing principle is that when sound waves enter the perforated plate, air friction in the small holes generates acoustic resistance and consumes sound energy, thereby achieving the purpose of sound absorption. Moreover, since the perforated plate structure is a resonance absorber, the sound-absorbing effect reaches the maximum value at the resonance frequency, so the size, porosity and distribution form of the micro-perforations are determined according to the specific sound-absorbing frequency band. Of course, the first sound-absorbing cavity 430 can also use reactive mufflers such as resonance mufflers and expansion mufflers for sound absorption. Reactive mufflers reduce the sound energy radiated outward by the muffler by causing impedance changes during the sound propagation process through sudden changes in the cross-section of the pipeline or by connecting resonance cavities, etc., to reflect and interfere with the sound energy, so as to achieve the purpose of sound absorption. In addition, the first sound-absorbing cavity 430 can also be filled with porous sound-absorbing materials, such as sound-absorbing cotton, foamed silicone rubber, etc.; or porous sound-absorbing materials can be filled on the basis of the above sound-absorbing structures to expand the sound-absorbing range. In addition, in order to further reduce the noise of the fan 210, the machine base housing 100 is provided with a grille structure 121 at the air outlet 120 to slow down the air velocity at the air outlet 120 and reduce the eddy current distribution, thereby further reducing the wind noise.

[0050] Referring to Figure 6 as shown, the lower housing 360 includes an upper edge portion 331, a lower edge portion 332, an outer peripheral portion 333, and an inner peripheral portion 334. At least a part of the upper edge portion 331, at least a part of the lower edge portion 332, the outer peripheral portion 333, and the inner peripheral portion 334 enclose to form a second sound-absorbing cavity 330. It can be understood that the second sound-absorbing cavity 330 is mainly for dealing with the noise generated by the motor 200. The second sound-absorbing cavity 330 can be a perforated sound-absorbing structure, a reactive muffler, or filled with porous sound-absorbing materials. It should be noted that if the second sound-absorbing cavity 330 adopts a perforated sound-absorbing structure, perforated sound-absorbing structures with different specification parameters can be set according to the noise frequencies generated by motors 200 with different parameters.

[0051] Referring to Figure 4 、 Figure 5 and Figure 6 as shown, specifically, the upper housing 350, the lower housing 360, and the fan housing 400 are hermetically connected in sequence in the up-down direction. A first gasket 361 is provided at the connection between the upper housing 350 and the lower housing 360, and a second gasket 410 is provided at the connection between the lower housing 360 and the fan housing 400. It can be understood that the settings of the first gasket 361 and the second gasket 410 can ensure the wrapping and isolation treatment of the motor 200, reduce the vibration noise radiation of the motor 200, and also isolate the vibration transmission between the motor housing 300 and the machine base housing 100. At the same time, a good sealed air duct is formed, which can prevent air leakage, avoid the cross-flow of the intake air duct 130 and the exhaust air duct 310, and affect the heat dissipation efficiency; moreover, the first gasket 361 and the second gasket 410 have a certain elasticity and can play a certain vibration damping role. Further, a third gasket 351 is provided at the connection between the top of the upper housing 350 and the output shaft of the motor 200, so that a relatively sealed exhaust air duct 310 is formed on the inner wall of the motor housing 300, preventing the cold air in the intake air duct 130 from entering through the gaps between the components, increasing the wind speed at the ventilation opening 320, and improving the heat dissipation effect. In this embodiment, a conical boss 352 is provided at the top of the upper housing 350, and multiple groups of ventilation openings 320 can be arranged at intervals along the circumferential direction of the conical boss 352, increasing the intake area of the ventilation openings 320, and the ventilation openings 320 are directly opposite to the upper end of the coil part of the motor 200, increasing the wind speed flowing through the coil part of the motor 200 and improving the heat dissipation efficiency of the exhaust air duct 310.

[0052] In some embodiments of the present invention, referring to Figure 5 and Figure 6As shown, the first sound absorption cavity 430 is disposed directly below the fan 210. The part of the top of the first sound absorption cavity 430 corresponding to the fan cover 400 is provided with micro-perforations 335 to perform sound absorption treatment on the wind noise generated by the fan 210. In addition, the second sound absorption cavity 330 is formed by enclosing at least part of the upper edge portion 331, at least part of the lower edge portion 332, the outer peripheral portion 333, and the inner peripheral portion 334. The micro-perforations 335 are evenly distributed on the inner peripheral portion 334, which can perform sound absorption treatment on the noise generated by the motor 200. Refer to Figure 10 As shown, the fan cover 400 of this embodiment has a volute-shaped structure, specifically adopting an Archimedean spiral structure, so as to form a centrifugal air duct (not shown in the figure) in the inner cavity of the fan cover 400. While improving the efficiency of the fan 210, it is convenient for the first sound absorption cavity 430 to process the noise of the centrifugal air duct.

[0053] Refer to Figure 7 and Figure 8 As shown, the mounting pillar 140 is provided at the top of the base housing 100. The motor 200 has a connecting portion 220 that cooperates with the mounting pillar 140. The connecting portion 220 is located within the upper cover 350. The connecting portion 220 is provided with a first mounting hole 221, and the upper cover 350 is provided with a second mounting hole 354. The mounting pillar 140 passes through the second mounting hole 354 and the first mounting hole 221 from top to bottom and is fixedly connected to the lower cover 360. The connection structure layout of the motor 200 and the motor cover 300 with the base housing 100 is reasonable, so that the motor 200 can be completely enclosed within the motor cover 300, reducing the outward radiation of the noise of the motor 200. The bottom of the mounting pillar 140 is provided with a third mounting hole 141, and the upper edge portion 331 is provided with a fourth mounting hole 3311 corresponding to and cooperating with the third mounting hole 141. The lower cover 360 and the mounting pillar 140 are fixed by a locking member 150 passing through the fourth mounting hole 3311 and the third mounting hole 141. In this embodiment, the locking member 150 is a bolt and is fixedly connected through the internal thread of the third mounting hole 141, meeting the accuracy requirements for the installation position of the motor 200 and solving the problem of radial swing of the motor 200. Further, the upper cover 350 and the lower cover 360 are fixed to the mounting pillar 140 at the top of the base housing 100 by bolts, and the fan cover 400 is fixed to the bottom of the base housing 100 through the surrounding wall 420. Its structure is stable, improving the installation strength of the motor cover 300 and the fan cover 400 with the base housing 100, which is beneficial to improving the strength of the whole machine and enhancing the product reliability.

[0054] Refer to Figure 7 、 Figure 8 and Figure 9As shown, a first washer 500 is sleeved on the mounting pillar 140. The first washer 500 is axially provided with a central hole 510 that mates with the mounting pillar 140. The first washer 500 is inserted through the first mounting hole 221, and one end of the first washer 500 abuts against the upper cover 350, and the other end of the first washer 500 abuts against the upper edge portion 331 to isolate the vibration of the motor 200. Specifically, a first boss 520 is provided at the upper end of the first washer 500, and a second boss 530 is provided at the lower end of the first washer 500. The first boss 520 is clamped between the upper cover 350 and the connecting portion 220, and the second boss 530 is clamped between the upper edge portion 331 and the connecting portion 220, which can effectively block the vibration transmission between the motor 200 and other components, reduce the vibration transmission between components, and thus reduce the vibration noise of the machine base housing 100. Further, the mounting pillar 140 includes a first cylinder 142 connected to the machine base housing 100 and a second cylinder 143 connected to the first cylinder 142. A second washer 550 is sleeved on the second cylinder 143. The second washer 550 is inserted through the second mounting hole 354. The upper end of the second washer 550 is clamped between the upper cover 350 and the first cylinder 142, so as to provide a multi-layer vibration isolation structure between the mounting structure of the motor 200 and the motor cover 300, and to minimize the influence of the vibration of the motor 200 on the motor cover 300. At the same time, it also avoids the contact between the motor cover 300 and the machine base housing 100, reduces the vibration transmission, and improves the user's product experience. In addition, the multi-stage vibration isolation structure composed of the first washer 500 and the second washer 550 can also improve the sealing performance of the motor cover 300, thereby forming an air outlet duct 310 with better sealing performance and improving the heat dissipation efficiency.

[0055] Reference Figure 8 and Figure 9As shown, an elastic cavity 540 is provided inside the first boss 520 or the second boss 530. It can be understood that the elastic cavity 540 is a structure with variable volume. The elastic cavity 540 can be provided on the first boss 520 or the second boss 530, or simultaneously provided on both the first boss 520 and the second boss 530, which is beneficial to further improve the deformation performance of the first gasket 500, reduce the system stiffness along the axial direction of the motor 200, and effectively reduce the circumferential vibration caused by the rotation of the motor 200. Moreover, it is beneficial to reduce the axial vibration problem caused by the up-and-down movement of food during the whipping process of the food processor in the axial direction. In this embodiment, both the first gasket 500 and the second gasket 550 are made of vibration isolation damping materials, and this material can be rubber, plastic, or polymer composite materials, etc. Further, the upper edge portion 331 is in abutting fit with the second boss 530. The upper edge portion 331 is provided with a protrusion 3312 protruding upward, and the fourth mounting hole 3311 is penetrated and opened at the axial center position of the protrusion 3312. The second boss 530 is recessed inwardly with a groove 531 that cooperates with the protrusion 3312, which improves the installation stability of the first gasket 500, also enhances the ability of the first gasket 500 to resist circumferential vibration, and extends the service life of the first gasket 500.

[0056] In some embodiments of the present invention, referring to Figure 7 and Figure 8 As shown, a connecting portion 220 is provided around the periphery of the motor 200. The first mounting holes 221 include four, and the four first mounting holes 221 are evenly distributed along the circumferential direction of the connecting portion 220. The mounting struts 140 are correspondingly arranged along the four first mounting holes 221. In another embodiment of the present invention, at least four connecting portions 220 are provided at intervals around the periphery of the motor 200. The at least four connecting portions 220 are evenly distributed along the circumferential direction of the motor 200, and each connecting portion 220 is correspondingly provided with a first mounting hole 221. The connection structure between the connecting portion 220 and the mounting struts 140 makes the force on the motor 200 more uniform and the installation more stable, and together with the multi-stage vibration isolation structure composed of the first gasket 500 and the second gasket 550, it reduces the axial stiffness and improves the vibration isolation effect, thereby reducing the transmission of vibration noise.

[0057] Referring to Figure 1 As shown, a food processor provided in this embodiment uses the above-mentioned base assembly 10. By means of noise reduction such as sound absorption, sound insulation, and vibration isolation for the base assembly 10, the vibration noise of the base assembly 10 can be reduced from the original sound power of 80 dBA to about 73 dBA, with a reduction of 7 dBA. The improvement of vibration noise is obvious, which greatly improves the user experience.

[0058] The other components and structures of the food processor of the present application are understood and easily obtained by those of ordinary skill in the art, and the applicant will not describe them in detail.

[0059] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. Base assembly, characterized in that, comprising: a base housing provided with an air inlet and an air outlet; a motor cover disposed within the base housing, an air inlet duct communicating with the air inlet being defined between the motor cover and the base housing; a fan cover disposed below the motor cover, an air outlet duct communicating with the air outlet being defined jointly by the fan cover and the motor cover; a motor received within the motor cover, a fan received within the fan cover being connected below the motor; wherein, the motor cover includes an upper cover body and a lower cover body, a ventilation opening communicating the air inlet duct and the air outlet duct being formed in the upper cover body, and the lower cover body being hermetically connected to the upper cover body and the fan cover respectively; a surrounding wall extends downward from the bottom of the fan cover, a first sound-absorbing cavity being formed by enclosing the bottom wall of the fan cover, the surrounding wall and the bottom of the base housing.

2. The base assembly according to claim 1, characterized in that: the lower cover body includes an upper edge portion, a lower edge portion, an outer peripheral portion and an inner peripheral portion; at least part of the upper edge portion and at least part of the lower edge portion, and the outer peripheral portion and the inner peripheral portion enclose a second sound-absorbing cavity.

3. The base assembly according to claim 1, characterized in that: mounting pillars are provided at the top of the base housing, the motor has a connecting portion cooperating with the mounting pillars, the connecting portion is located within the upper cover body and is provided with a first mounting hole, the upper cover body is provided with a second mounting hole, and the mounting pillars sequentially pass through the second mounting hole and the first mounting hole from top to bottom and are fixedly connected to the lower cover body.

4. The base assembly according to claim 3, characterized in that: a first washer is sleeved on the mounting pillar, the first washer is axially provided with a central hole cooperating with the mounting pillar, the first washer passes through the first mounting hole, and one end of the first washer abuts against the upper cover body, and the other end of the first washer abuts against the lower cover body.

5. The base assembly according to claim 4, characterized in that: a first boss is provided at the upper end of the first washer, and a second boss is provided at the lower end, the first boss is clamped between the upper cover body and the connecting portion, and the second boss is clamped between the lower cover body and the connecting portion.

6. The base assembly according to claim 5, characterized in that: an elastic cavity is provided within the first boss or the second boss.

7. The base assembly according to claim 5, characterized in that: the lower cover body includes an upper edge portion abutting and cooperating with the second boss, a protrusion protruding upward is provided on the upper edge portion, and a groove cooperating with the protrusion is provided by inwardly recessing the second boss.

8. The base assembly according to claim 3, characterized in that: the mounting pillar includes a first cylinder connected to the base housing and a second cylinder connected to the first cylinder, a second washer is sleeved on the second cylinder, the second washer passes through the second mounting hole, and the upper end of the second washer is clamped between the upper cover body and the first cylinder.

9. The base assembly according to any one of claims 3 to 8, characterized in that: The periphery of the motor is surrounded by the connecting portion, and the first mounting holes include at least four, and at least four of the first mounting holes are evenly distributed along the circumferential direction of the connecting portion; Or at least four of the connecting portions are provided at intervals on the periphery of the motor, at least four of the connecting portions are evenly distributed along the circumferential direction of the motor, and each of the connecting portions is correspondingly provided with a first mounting hole.

10. The base assembly according to claim 1, Characterized in that: The air inlet and the air outlet are respectively arranged on the bottom wall of the base housing.

11. A food processor, Characterized in that: It includes the base assembly according to any one of claims 1 to 10.

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