Light-tone food processor

Abstract

The utility model belongs to the technical field of food processing devices, and discloses a light-tone food processor which comprises a shell and a smashing assembly installed in the shell, the smashing assembly comprises a smashing cup and a motor installed below the smashing cup, and a rotating shaft of the motor penetrates through the bottom wall of the smashing cup, extends into the smashing cup and is connected with a smashing cutter. A ring rib arranged around the rotating shaft is arranged on the outer bottom wall of the smashing cup and abuts against the upper end face of the motor, and a closed silencing cavity is defined by the outer bottom face of the smashing cup, the upper end face of the motor and the ring rib. The noise in the cup and the noise of the motor are subjected to destructive interference when being transmitted in the silencing cavity, so that the amplitude of the mixed noise in the silencing cavity is weakened, the sound intensity of the noise which is secondarily blocked by the shell and is transmitted to the outside is greatly weakened, the noise is relatively soft and light, and a good noise reduction effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of food processing devices, and in particular relates to a low-noise food processing machine. Background Art

[0002] Traditional food processors generally include a grinding cup, a grinding blade and a motor. The motor drives the grinding blade to rotate and beat the ingredients in the grinding cup. The main noise of the food processor comes from the operation of the motor and the collision noise when the grinding blade collides with the ingredients. How to reduce the noise of the food processor has always been a pain point for researchers in this technical field.

[0003] For example, application number 201921840676.6 discloses a food processing machine, including: a crushing cup, a heating element, a motor, and a heat insulating element. The heat insulating element is arranged higher than the front end of the motor housing, and the heat insulating element isolates the heating element and the motor. The heat insulating element has a heat insulating cavity, and the heat insulating cavity is located above the motor to isolate the heat transferred from the heating element to the motor. The motor shaft passes through the heat insulating element and extends into the crushing cup. This solution uses a heat insulating element and a heat insulating cavity to achieve two layers of insulation, which greatly reduces the heat transfer efficiency between the heating element and the motor, and effectively reduces the temperature rise of the motor. However, due to the friction noise generated during the operation of the motor, a part of the friction noise of the motor can be transmitted outward after being blocked by the insulation cavity. However, the insulation cavity has limited noise blocking ability in one direction. Since the motor is separated by the insulation component in the motor installation cavity below the insulation component, more friction noise will be directly transmitted outward in the installation cavity, resulting in a problem of high processing noise. The friction noise generated by the operation of the motor has high energy, which causes a stronger and harsh feeling to the user. Moreover, during use, the loud working noise of the food processor makes other sounds unable to be effectively identified. Utility Model Content

[0004] The utility model provides a low-noise food processor to solve the problem that the noise of the food processor in the prior art is too loud, which causes a strong and harsh feeling to the user.

[0005] The technical solution adopted by the utility model is:

[0006] The utility model provides a low-noise food processor, comprising a shell and a grinding component installed in the shell, the grinding component comprising a grinding cup and a motor installed below the grinding cup, the rotating shaft of the motor passes through the bottom wall of the grinding cup, extends into the grinding cup and is connected to a grinding knife, the outer bottom wall of the grinding cup is provided with an annular rib arranged around the rotating shaft, the annular rib abuts against the upper end surface of the motor, the outer bottom surface of the grinding cup, the upper end surface of the motor and the annular rib enclose a closed muffler chamber.

[0007] The low-noise food processor provided by the utility model has noise inside the grinding cup due to the collision between the food and the grinding blade, the collision between the food and the cup body during the processing process, friction noise generated by the rotation of the rotor of the motor during operation, and friction noise caused by the deflection when the load of the rotating shaft driving the grinding blade is large. Motor noise is inevitable. Therefore, the annular rib is abutted against the upper end face of the motor, and a closed silencer chamber is formed by the outer bottom face of the grinding cup, the upper end face of the motor and the annular rib. The cup body noise enters the silencer chamber downward, and the motor operation noise enters the silencer chamber upward. The energy of the noise is attenuated in the process of passing through the silencer chamber and the noise is reflected when it collides with the wall of the silencer chamber, so that part of the noise energy is absorbed by the wall of the silencer chamber, thereby reducing the noise level. Therefore, the noise in the cup and the motor noise will interfere when propagating in the silencing chamber. When the frequency of the motor noise wave and the noise wave in the cup differ greatly in the silencing chamber, they will interfere with each other, so that the amplitude of the mixed noise in the silencing chamber is weakened, and the energy interference reduction of the noise can be achieved. Therefore, by setting the silencing chamber to interfere and attenuate the noise in the cup and the motor noise, the noise with weakened energy after mixing continues to be transmitted outward from the silencing chamber. The sound intensity of the noise transmitted to the outside world after the secondary blocking of the shell will be greatly weakened, and the noise is relatively soft and light, achieving a good noise reduction effect. The noise after the energy attenuation of the silencing chamber has reduced energy, making other sounds or details easier to hear and distinguish, reducing interference with conversations between users during use. In addition, since the silencing chamber is formed between the motor and the cup body, the air inside the silencing chamber acts as a heat-insulating medium, which prevents the heat in the cup body from being directly transferred to the motor, improves the temperature rise of the motor when the whole machine is working, and extends the service life of the motor.

[0008] In a preferred embodiment, a drain port is provided at the bottom of the pulverizing cup, the top wall of the muffler chamber is inclined downward from a side away from the drain port to a side of the drain port, and the bottom wall of the muffler chamber is horizontally arranged.

[0009] By tilting the top wall of the silencer chamber downward from the side away from the liquid discharge port to the side of the liquid discharge port, on the one hand, a flow guide slope is formed on the bottom wall of the pulverizing cup, so that the liquid in the pulverizing cup can flow to the liquid discharge port more easily and be discharged completely; on the other hand, the inclined top wall of the silencer chamber and the horizontal bottom wall of the silencer chamber are used to cooperate, so that the height of the silencer chamber changes gradually. When the noise in the cup and the motor noise interfere with each other in the pulverizing chamber, the frequency difference of the two noises is further increased, thereby improving the effect of noise interference reduction and improving noise reduction efficiency; the bottom wall and top wall of the silencer chamber are not parallel to each other, so that the reflected noise that hits the top wall and bottom wall of the silencer chamber produces a propagation path in multiple directions, that is, the probability of interference collision between the noise in the cup and the motor noise is increased, and the reflected noise in the cup and the motor noise are further interfered and reduced with each other. The bottom wall of the silencer chamber is set horizontally, which is conducive to improving the coaxiality of the rotating shaft, the pulverizing knife and the cup body, improving the rotation balance of the pulverizing knife, and reducing the noise generated by the eccentricity of the pulverizing knife from the source.

[0010] In a preferred embodiment, the annular rib is provided with convex patterns located in the muffler cavity, and the convex patterns extend in a wave shape along the circumference of the annular rib.

[0011] By arranging convex patterns located in the silencer cavity on the annular ribs, and the convex patterns extending in a wave shape along the circumference of the annular ribs, whether the noise is propagated along the axial direction of the silencer cavity or along the circumferential direction of the silencer cavity, it will be reflected after encountering the convex patterns, the energy will be reduced, and a variety of different reflection directions will be generated. Therefore, the reflected noises can still interfere with each other to offset the sound wave energy, thereby expanding the silencing effect in the silencer cavity and reducing the noise transmitted to the outside.

[0012] In a preferred embodiment, sound-absorbing cotton is provided on the inner wall surface of the muffler cavity;

[0013] By arranging sound-absorbing cotton on the inner wall surface of the silencing chamber, the mixed noise can be absorbed by the sound-absorbing cotton in the path of being transmitted to the outside through the cavity wall of the silencing chamber.

[0014] In a preferred embodiment, the annular rib is in a circular ring shape or a polygonal shape.

[0015] Whether it is a circular ring or a polygonal shape, the ring rib surrounds the shaft circumferentially, forming a closed muffler cavity around the shaft, effectively blocking the noise generated by the motor shaft. The use of a circular ring shape is conducive to the stamping manufacturing of the ring rib from the processing technology aspect.

[0016] In a preferred embodiment, a buffer pad is sandwiched between the upper end surface of the motor and the annular rib.

[0017] By setting the buffer pad, a flexible and sealed connection between the motor and the ring rib is achieved, which is conducive to ensuring the closure of the silencer cavity, so that the motor noise and the cup body noise can effectively interfere and attenuate in the closed cavity, thereby reducing the noise energy; at the same time, the use of the buffer pad can absorb the vibration of the motor and reduce the vibration noise of the motor. The buffer pad prevents hard collision noise between the motor and the ring rib, reduces the noise source and thus reduces the noise.

[0018] In a preferred embodiment, the buffer pad includes a sound-absorbing portion extending upward to be sleeved on the outer periphery of the annular rib.

[0019] By providing a sound-absorbing part that is sleeved and connected to the outer periphery of the ring rib on the buffer pad, the mixed noise reduced by the sound-absorbing cavity can be further blocked and absorbed by the sound-absorbing part in the path of transmission to the outside, thereby reducing the noise transmitted to the outside. The sound-absorbing part can also realize the reliable installation of the buffer pad. During the assembly process, the buffer pad and the ring rib of the cup body can be pre-assembled first, and then the buffer pad and the upper end surface of the motor can be pressed tightly, so that the assembly is reliable and the noise is effectively reduced.

[0020] In a preferred embodiment, the buffer pad includes a sleeve portion extending downward to sleeve on the outer periphery of the motor, the housing of the motor is provided with a vent, and the sleeve portion is provided with a heat dissipation hole corresponding to the position of the vent.

[0021] The buffer pad is sleeved on the outer periphery of the motor by using the sleeve part, and heat dissipation holes corresponding to the vents of the motor are provided. On the premise of achieving good heat dissipation of the motor, the sleeve part is used to absorb the vibration of the motor to avoid the generation of noise. At the same time, the buffer pad is pre-installed, the assembly is reliable, and the assembly efficiency is improved.

[0022] In a preferred embodiment, the silent food processor further comprises a machine base for supporting the grinding assembly, and a sinking cavity for accommodating the motor is disposed on the machine base.

[0023] Since the motor noise is not only transmitted upward but also in other directions, a machine base is provided with a sinking cavity to accommodate the motor, so that the noise from other directions of the motor can be buffered and reduced in the sinking cavity and then transmitted outward. The motor noise is transmitted after being blocked by the wall of the sinking cavity, thereby achieving all-round wrapping and noise reduction of the motor.

[0024] In a preferred embodiment, a soundproof cavity is formed between the lower end surface of the motor and the bottom wall of the sinking cavity.

[0025] By forming a soundproof cavity between the lower end face of the motor and the bottom wall of the sinking cavity, compared with the support cooperation between the two, on the one hand, the air in the soundproof cavity is used as a soundproof medium to reduce the energy of noise propagation, and on the other hand, hard collision noise is prevented between the lower end face of the motor and the bottom wall support of the sinking cavity, thereby reducing the source of noise.

[0026] In a preferred embodiment, the motor is a brushless DC motor; or, the pulverizing assembly further includes a heating tube, and the heating tube is arranged around the outer periphery of the muffler chamber.

[0027] The brushless DC motor has low noise during operation because there is no noise generated by the friction of carbon brushes and electric brushes. The brushless DC motor uses electronic control speed regulation, does not require mechanical commutation, has a more stable speed, reduces the friction noise of the shaft, and thus reduces noise from the source. In addition, the brushless DC motor includes a housing with an upper end face and a lower end face, which reduces the axial height compared to other motors with motor brackets, has stable operation, and reduces the height of the entire machine.

[0028] By surrounding the heating tube at the periphery of the muffler chamber, the muffler chamber can not only isolate the heat from the cup body from being transferred to the motor, but also isolate the heat from the heating tube from being transferred to the motor, thereby achieving a good heat insulation effect while reducing noise.

[0029] In a preferred embodiment, the outer bottom wall of the pulverizing cup is provided with a mounting column located outside the annular rib, and the motor is provided with a first lug protruding radially outward, and the first lug is fixedly connected to the mounting column so that the motor is suspended below the pulverizing cup.

[0030] The motor and the crushing cup are fixedly installed by using the mounting column and the first lug, so that the motor and the crushing cup are combined into a crushing assembly and then installed into the housing together, which is convenient for assembly, and is conducive to improving the coaxiality of the motor and the crushing cup, improving the rotation balance, reducing the yaw noise of the motor shaft, improving the abutment effect between the ring rib and the upper end face of the motor, and ensuring the closed noise reduction effect of the closed cavity. Since the mounting column is arranged on the outside of the ring rib and located on the outer bottom wall of the crushing cup, the radial space of the crushing cup is reasonably utilized, and there is no need to expand the radial space of the crushing cup to place the mounting column. At the same time, along the axial direction, the ring rib and the mounting column can overlap in height, realizing the reasonable utilization of the height space, which is conducive to the compact structure of the whole machine.

[0031] In a preferred embodiment, the silent food processor also includes a base supporting the grinding assembly, the grinding cup is provided with a second lug protruding radially outward, the base is provided with a support column protruding upward, the second lug is fixedly connected to the support column, the motor is provided with a first lug protruding radially outward, and the second lug is clamped between the second lug and the support column.

[0032] By adopting the above fixing method, the motor can be clamped between the machine base and the grinding cup, so that the grinding cup, the motor and the machine base can be assembled in one step, saving assembly steps and improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 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:

[0034] Figure 1 It is a schematic cross-sectional structure diagram of a light-sound food processor in one embodiment of the utility model;

[0035] Figure 2 for Figure 1 A magnified schematic diagram of the middle A area;

[0036] Figure 3 This is a schematic diagram of the structure of a crushing cup in one embodiment of the utility model;

[0037] Figure 4 This is an exploded schematic diagram of a crushing assembly and a machine base in one embodiment of the utility model;

[0038] Figure 5 This is a schematic diagram of the assembly of a crushing assembly and a machine base in one embodiment of the utility model;

[0039] Figure 6 This is a schematic diagram of the structure of a buffer pad in one embodiment of the utility model;

[0040] Figure 7 This is a schematic diagram of the matching structure of the buffer pad and the crushing assembly in another embodiment of the utility model.

[0041] Description of reference numerals:

[0042] 10. Shell; 20. Crushing cup; 21. Crushing knife; 22. Annular rib; 23. Drain port; 24. Mounting column; 25. Second lug; 26. Heating tube; 30. Motor; 31. Ventilation port; 32. First lug; 40. Silencing chamber; 50. Buffer pad; 51. Silencing part; 52. Socket part; 53. Heat dissipation hole; 60. Machine base; 61. Sinking chamber; 62. Soundproof chamber; 63. Support column; 64. Shock-absorbing silicone. DETAILED DESCRIPTION

[0043] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present invention and the features in each embodiment may be combined with each other without conflict.

[0045] In addition, in the description of the present invention, it should be understood that the terms "upper", "lower", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are 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.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] 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.

[0048] like Figure 1 , Figure 2 As shown, the utility model provides a low-noise food processor in one embodiment, including a shell 10 and a grinding assembly installed in the shell 10, the grinding assembly includes a grinding cup 20 and a motor 30 installed below the grinding cup 20, the rotating shaft of the motor 30 passes through the bottom wall of the grinding cup 20, extends into the grinding cup 20 and is connected to a grinding knife 21, the outer bottom wall of the grinding cup 20 is provided with an annular rib 22 arranged around the rotating shaft, the annular rib 22 abuts against the upper end surface of the motor 30, the outer bottom surface of the grinding cup 20, the upper end surface of the motor 30 and the annular rib 22 enclose a closed muffler chamber 40.

[0049] In a preferred embodiment, the light sound food processor is a light sound food processor that does not need to be washed by hand, such as Figure 1 , Figure 2As shown, the low-noise food processor also includes a base 60 supporting the pulverizing assembly, and a sinking cavity 61 for accommodating the motor 30 is provided on the base 60. A soundproof cavity 62 is formed between the lower end surface of the motor 30 and the bottom wall of the sinking cavity 61. Preferably, the motor 30 is a brushless DC motor, and the pulverizing assembly also includes a heating tube 26, which is arranged around the outer periphery of the muffler cavity 40.

[0050] The low-noise food processor provided in this embodiment has noise inside the grinding cup 20 due to the collision between the food and the grinding blade 21, and between the food and the cup body during the processing. The motor 30 generates friction noise due to the rotation of the rotor during operation, and friction noise caused by the deflection of the grinding blade 21 driven by the rotating shaft when the load is large. The noise of the motor 30 is inevitable. Therefore, the annular rib 22 is abutted against the upper end surface of the motor 30, and a closed muffler chamber 40 is formed by the outer bottom surface of the grinding cup 20, the upper end surface of the motor 30 and the annular rib 22. The cup body noise enters the muffler chamber 40 downward, and the running noise of the motor 30 enters the muffler chamber 40 upward. Due to the energy attenuation of the noise in the process of passing through the muffler chamber 40 and the reflection of the noise when colliding with the cavity wall of the muffler chamber 40, part of the noise energy is absorbed by the muffler chamber. The cavity wall of 40 absorbs the noise and reduces the noise level. Moreover, the noise in the cup and the noise of the motor 30 will interfere with each other when they are reflected and propagated in the silencer cavity 40. When the frequency of the noise wave of the motor 30 and the noise wave in the cup differs greatly in the silencer cavity 40, they will destructively interfere with each other, so that the amplitude of the mixed noise in the silencer cavity 40 is weakened, and the energy interference reduction of the noise can be achieved. Therefore, the silencer cavity 40 is provided with a mechanism to interfere and attenuate the noise in the cup and the noise of the motor 30, so that the noise with weakened energy after mixing continues to be transmitted outward from the silencer cavity 40. After the noise is blocked for the second time by the outer shell 10, the intensity of the sound transmitted to the outside will be greatly weakened, and the noise will be relatively soft and light. The noise after the energy is attenuated in the silencer cavity 40 has reduced energy, making other sounds or details easier to hear and distinguish. In addition, since a silencer cavity 40 is formed between the motor 30 and the cup body, the air inside the silencer cavity 40 acts as a heat insulating medium, preventing the heat in the cup body from being directly transferred to the motor 30, thereby improving the temperature rise of the motor 30 when the whole machine is working and extending the service life of the motor 30.

[0051] Since the noise of the motor 30 is transmitted in other directions in addition to being transmitted upward, the base 60 is provided, and the base 60 is provided with a sinking cavity 61 for accommodating the motor 30, so that the noise of the motor 30 in other directions can be buffered and reduced in the sinking cavity 61 and then transmitted outward, and the noise of the motor 30 is transmitted after being blocked by the cavity wall of the sinking cavity 61, so as to achieve all-round wrapping and noise reduction of the motor 30. By forming a soundproof cavity 62 between the lower end face of the motor 30 and the cavity bottom wall of the sinking cavity 61, compared with the supporting and matching method of the two, on the one hand, the air in the soundproof cavity 62 is used as a soundproof medium to reduce the energy of noise transmission, and on the other hand, the lower end face of the motor 30 and the cavity bottom wall support of the sinking cavity 61 are prevented from causing hard collision noise.

[0052] This embodiment uses a brushless DC motor 30, and since there is no noise generated by the friction of carbon brushes and brushes, the noise during operation is low. The brushless DC motor 30 uses electronic control speed regulation, does not require mechanical commutation, and has a more stable rotation speed, which reduces the friction noise of the rotating shaft, thereby reducing noise from the source of noise. In addition, the brushless DC motor 30 includes a housing 10 with an upper end face and a lower end face. Compared with other motors 30 with motor 30 brackets, the axial height is reduced, the operation is stable, and the height of the whole machine is reduced. By surrounding the heating tube 26 on the periphery of the silencer chamber 40, the silencer chamber 40 is used to not only isolate the heat from the cup body from being transferred to the motor 30, but also isolate the heat from the heating tube 26 from being transferred to the motor 30, which not only reduces noise but also has a good heat insulation effect.

[0053] In a preferred embodiment, Figure 2 As shown, a drain port 23 is provided at the bottom of the grinding cup 20, the top wall of the muffler chamber 40 is tilted downward from the side away from the drain port 23 to the side of the drain port 23, and the bottom wall of the muffler chamber 40 is horizontally arranged.

[0054] By tilting the top wall of the silencer chamber 40 downward from the side away from the drain port 23 to the side of the drain port 23, on the one hand, a guide slope is formed on the inner bottom wall of the pulverizing cup 20, so that the liquid in the pulverizing cup 20 can flow to the drain port 23 more easily and be discharged completely; on the other hand, the inclined top wall of the silencer chamber 40 and the horizontally set bottom wall of the silencer chamber 40 cooperate to gradually change the cavity height of the silencer chamber 40, and when the noise in the cup and the noise of the motor 30 interfere with each other in the pulverizing chamber, the frequency difference between the two noises is further increased, thereby enhancing the effect of noise reduction by interference, and improving the noise reduction efficiency; the bottom wall and top wall of the silencer chamber 40 are not parallel to each other, so that the reflected noise that hits the top wall and bottom wall of the silencer chamber 40 produces propagation paths in multiple directions, that is, the probability of interference collision between the noise in the cup and the noise of the motor 30 is increased, and the reflected noise in the cup and the noise of the motor 30 are further interfered and reduced with each other. The bottom wall of the muffler chamber 40 is arranged horizontally, which is beneficial to improving the coaxiality of the rotating shaft, the crushing blade 21 and the cup body, improving the rotation balance of the crushing blade 21, and reducing the noise generated by the deflection of the crushing blade 21 from the source.

[0055] It should be noted that in order to further reduce the mixed noise energy in the silencer cavity 40, in a preferred embodiment, the annular rib 22 is provided with convex patterns located in the silencer cavity 40, and the convex patterns extend in a wave shape along the circumference of the annular rib 22; in another preferred embodiment, sound-absorbing cotton is provided on the inner wall surface of the silencer cavity 40.

[0056] By providing convex patterns located in the muffler cavity 40 on the annular rib 22, and the convex patterns extend in a wave shape along the circumference of the annular rib 22, whether the noise is propagated along the axial direction of the muffler cavity 40 or along the circumferential direction of the muffler cavity 40, it will be reflected after encountering the convex patterns, and the energy will be reduced, and a variety of different reflection directions will be generated. Therefore, the reflected noises can still interfere with each other to offset the sound wave energy, thereby expanding the muffler effect in the muffler cavity 40 and reducing the noise transmitted to the outside. By providing sound-absorbing cotton on the inner wall surface of the muffler cavity 40, the mixed noise can be absorbed by the sound-absorbing cotton in the path of passing through the cavity wall of the muffler cavity 40 to the outside.

[0057] It should be noted that if Figure 3 As shown, the annular rib 22 is annular. Of course, the annular rib 22 can also be polygonal, such as triangular or square. Regardless of the annular or polygonal shape, the annular rib 22 surrounds the shaft circumferentially to form a closed muffler cavity 40 surrounding the shaft, effectively blocking the noise generated by the shaft of the motor 30. The annular shape is advantageous for the stamping manufacturing of the annular rib 22 in terms of processing technology.

[0058] In a preferred embodiment, Figure 4 , Figure 5 , Figure 6As shown, a buffer pad 50 is sandwiched between the upper end surface of the motor 30 and the annular rib 22 .

[0059] By providing the buffer pad 50, a flexible and sealed connection is achieved between the motor 30 and the annular rib 22, which helps to ensure the closure of the silencer chamber 40, so that the noise of the motor 30 and the cup body can effectively interfere and attenuate in the closed chamber, thereby reducing the noise energy; at the same time, the buffer pad 50 can absorb the vibration of the motor 30 and reduce the vibration noise of the motor 30. The buffer pad 50 prevents hard collision noise from occurring between the motor 30 and the annular rib 22, thereby reducing the source of noise and thus reducing noise.

[0060] In the present invention, the specific form of the buffer pad 50 is not limited. For example, it can optionally adopt any one of the following implementation examples:

[0061] Implementation example 1, such as Figure 4 and Figure 6 As shown, the buffer pad 50 includes a sleeve portion 52 extending downward to be sleeved on the outer periphery of the motor 30 , the housing of the motor 30 is provided with a vent 31 , and the sleeve portion 52 is provided with a heat dissipation hole 53 corresponding to the position of the vent 31 .

[0062] The buffer pad 50 is sleeved on the outer periphery of the motor 30 by using the sleeve portion 52, and a heat dissipation hole 53 corresponding to the vent 31 of the motor 30 is provided. On the premise of achieving good heat dissipation of the motor 30, the sleeve portion 52 is used to absorb the vibration of the motor 30 to avoid the generation of noise, and at the same time the buffer pad 50 is pre-installed and assembled reliably.

[0063] It should be noted that in this embodiment, the buffer pad 52 blocks part of the upper end surface of the motor instead of all of it, which can facilitate the installation of the buffer pad 52 and the reduction of the interference between the motor noise and the noise in the cup directly in the silencer cavity.

[0064] Implementation Example 2, such as Figure 7 As shown, the buffer pad 50 includes a sound-absorbing portion 51 extending upward to be sleeved on the outer periphery of the annular rib 22 and a sleeve portion 52 extending downward to be sleeved on the outer periphery of the motor 30 .

[0065] By providing the buffer pad 50 with a muffler 51 that is sleeved with the outer periphery of the annular rib 22, the mixed noise reduced by the muffler cavity 40 can be further blocked and absorbed by the muffler 51 in the path of transmission to the outside, thereby reducing the noise transmitted to the outside. The muffler 51 can also realize the reliable installation of the buffer pad 50. During the assembly process, the buffer pad 50 can be pre-assembled with the annular rib 22 of the cup body, and then the buffer pad 50 can be pressed against the upper end surface of the motor 30, so that the assembly is reliable and the noise is effectively reduced.

[0066] In this embodiment, the muffler 51 and the sleeve connection part 52 are used to respectively realize the limited pre-installation with the annular rib 22 and the motor 30. In fact, the buffer pad 50 can also be provided with only the muffler 51 and the sleeve connection part is omitted.

[0067] In implementation example 3, the buffer pad 50 extends to cover the entire upper end surface of the motor 30, and a through hole is provided in the middle of the buffer pad 50 to cooperate with the rear end of the motor.

[0068] In the present invention, there is no limitation on the assembly method between the crushing assembly and the base 60. For example, any one of the following implementation examples may be optionally adopted:

[0069] Implementation Example 4, combined with Figure 4 As shown, the outer bottom wall of the grinding cup 20 is provided with a mounting post 24 located outside the annular rib 22. Figure 5 As shown, the motor 30 is provided with a first lug 32 protruding radially outward, and the first lug 32 is fixedly connected to the mounting column 24 so that the motor 30 is suspended below the grinding cup 20 .

[0070] like Figure 4 , Figure 5 , Figure 6 As shown, the motor 30 and the grinding cup 20 are combined into a whole, and the whole is installed on the base 60: the grinding cup 20 is provided with a second lug 25 protruding radially outward, and the base 60 is provided with four support columns 63 protruding upward, the second lug 25 corresponds to the support columns 63 in number and position and is fixedly connected by screws, and a shock-absorbing silicone 64 is arranged between the second lug 25 and the support columns 63.

[0071] The motor 30 and the crushing cup 20 are fixedly mounted by using the mounting post 24 and the first lug 32, so that the motor 30 and the crushing cup 20 are assembled into a crushing assembly and then installed together into the housing 10, which is convenient for assembly, and is conducive to improving the coaxiality of the motor 30 and the crushing cup 20, improving the rotation balance, reducing the swing noise of the rotating shaft of the motor 30, improving the abutment effect between the annular rib 22 and the upper end surface of the motor 30, and ensuring the closed noise reduction effect of the closed cavity. Since the mounting post 24 is arranged on the outside of the annular rib 22 and located on the outer bottom wall of the crushing cup 20, the radial space of the crushing cup 20 is reasonably utilized, and there is no need to expand the radial space of the crushing cup 20 to place the mounting post 24. At the same time, along the axial direction, the annular rib 22 and the mounting post 24 can be highly overlapped to achieve reasonable utilization of the height space, which is conducive to the compact structure of the whole machine.

[0072] In implementation example 5, the light-sound food processor also includes a base 60 for supporting the grinding assembly, the grinding cup 20 is provided with a second lug 25 protruding radially outward, the base 60 is provided with a support column 63 protruding upward, the second lug 25 is fixedly connected to the support column 63, the motor 30 is provided with a first lug 32 protruding radially outward, and the second lug 25 is clamped between the second lug 25 and the support column 63.

[0073] By adopting the above fixing method, the motor 30 can be clamped between the machine base 60 and the grinding cup 20, so that the grinding cup 20, the motor 30 and the machine base 60 can be assembled in one step, saving assembly steps and improving assembly efficiency.

[0074] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0075] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0076] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A low-noise food processor, It is characterized in that It includes a shell and a crushing assembly installed in the shell, the crushing assembly includes a crushing cup and a motor installed below the crushing cup, the rotating shaft of the motor passes through the bottom wall of the crushing cup, extends into the crushing cup and is connected to a crushing knife, the outer bottom wall of the crushing cup is provided with an annular rib arranged around the rotating shaft, the annular rib abuts against the upper end surface of the motor, the outer bottom surface of the crushing cup, the upper end surface of the motor and the annular rib enclose a closed silencing chamber.

2. A low-noise food processor according to claim 1, It is characterized in that A liquid discharge port is provided at the bottom of the pulverizing cup, the top wall of the muffler cavity is inclined downward from a side away from the liquid discharge port to a side of the liquid discharge port, and the bottom wall of the muffler cavity is horizontally arranged.

3. A low-noise food processor according to claim 1, It is characterized in that The annular rib is provided with convex patterns located in the muffler cavity, and the convex patterns extend in a wave shape along the circumference of the annular rib; Alternatively, sound-absorbing cotton is arranged on the inner wall surface of the muffler cavity; Alternatively, the annular rib is in a circular ring shape or a polygonal shape.

4. A low-noise food processor according to claim 1, It is characterized in that A buffer pad is sandwiched between the upper end surface of the motor and the annular rib.

5. A silent food processor according to claim 4, It is characterized in that The buffer pad includes a sound-absorbing portion extending upward to be sleeved on the outer periphery of the annular rib.

6. A silent food processor according to claim 4, It is characterized in that The buffer pad comprises a sleeve portion extending downward to be sleeved on the outer periphery of the motor, the housing of the motor is provided with a vent, and the sleeve portion is provided with a heat dissipation hole corresponding to the position of the vent.

7. A low-noise food processor according to claim 1, It is characterized in that The light-sound food processor also includes a machine base supporting the grinding assembly, and the machine base is provided with a sinking cavity for accommodating the motor.

8. A silent food processor according to claim 7, It is characterized in that A soundproof cavity is formed between the lower end surface of the motor and the bottom wall of the sinking cavity.

9. The low-noise food processor according to claim 1, It is characterized in that The motor is a brushless DC motor; Alternatively, the pulverizing assembly further comprises a heating tube, and the heating tube is arranged around the outer periphery of the muffler chamber.

10. The silent food processor according to claim 1, It is characterized in that The outer bottom wall of the pulverizing cup is provided with a mounting column located outside the annular rib, and the motor is provided with a first lug protruding radially outward, and the first lug is fixedly connected to the mounting column so that the motor is hoisted below the pulverizing cup; Alternatively, the silent food processor further comprises a base supporting the grinding assembly, the grinding cup being provided with a second lug protruding radially outward, the base being provided with a support column protruding upward, the second lug being fixedly connected to the support column, the motor being provided with a first lug protruding radially outward, the second lug being clamped between the second lug and the support column.

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