Food processor capable of reducing exhaust noise

Abstract

The utility model discloses a food processor capable of reducing exhaust noise, relates to the field of household appliances, solves the problem that an air outlet structure is not smooth enough in exhaust while reducing noise, and adopts the technical scheme that the food processor comprises a main machine assembly, a stirring cup assembly and a motor, the stirring cup assembly comprises a stirring cup, a stirring cutter arranged in the stirring cup and a stirring cup cover covering the opening of the stirring cup. The motor drives the stirring cutter to rotate, an inner ring blocking rib and an outer ring blocking rib are arranged in the center area of the stirring cup cover, the outer ring blocking rib surrounds the outer side of the inner ring blocking rib, and an axially-through exhaust hole is formed between the outer ring blocking rib and the inner ring blocking rib. The exhaust hole is provided with a plurality of vortex blades distributed in a spiral shape in the circumferential direction, a vortex channel is formed between every two adjacent vortex blades in the circumferential direction, airflow passing through the exhaust hole is divided into a plurality of strands of small airflow through the multiple vortex channels, the movement direction of the airflow is changed through the vortex blades, and therefore the airflow speed and airflow impact are reduced. Therefore, the noise is reduced, and the exhaust is smoother at the same time.

Description

Technical Field

[0001] The utility model relates to the field of household appliances, in particular to a food processor capable of reducing exhaust noise. Background Art

[0002] The common air outlet structures of existing food processing machines include an axial single-channel air outlet structure and a multi-angle turning air outlet structure, wherein the axial single-channel air outlet structure is an air outlet hole that is directly connected in the axial direction of the cup cover. For example, the wall breaking machine disclosed in the prior art CN210204517U includes: a machine body; a cup body, which is arranged on the machine body; a cup cover, which is buckled on the cup body; and also includes: a protective cover, which is sleeved on the cup body and detachably connected to the machine body; a vacuum module, which is detachably arranged in the cup cover, used to vacuum the inside of the cup body, and includes an air outlet; a vacuum exhaust channel, which is connected to the air outlet, and is used to discharge the gas extracted from the cup body to the outside, which is opened inside the wall of the protective cover and extends from the inside of the wall of the protective cover to the inside of the machine body along the height direction of the protective cover. However, when the cup body is exhausted outwards, the air flow inside the cup body will be discharged directly from the air outlet without obstruction, so the discharge speed of the air flow is faster, resulting in a more concentrated noise at the air outlet.

[0003] Another multi-angle turning air outlet structure combines the axial and transverse air outlet channels to form a structure with multiple turns. For example, the prior art CN108294649A discloses an exhaust, overflow prevention and noise reduction cup cover and a wall breaker, wherein the cup cover comprises a cup body, a cup cover is provided at the upper open end of the cup body, a feeding cover is provided in the cup cover, and the inner side of the cup cover and the outer side of the feeding cover are combined to form a first annular cavity and a second annular cavity for noise reduction and exhaust that are connected to each other, the first annular cavity is connected to the feeding cover through an inner exhaust hole, and the second annular cavity is connected to the outside through a second exhaust channel for overflow prevention and bubble breaking; the wall breaker comprises the above-mentioned cup cover. By providing the inner cavity, the first annular cavity and the second annular cavity, it is possible to prevent noise from being directly transmitted to the outside of the cup cover, thereby eliminating noise within a wider frequency range; this air outlet structure combines the axial and transverse air outlet channels to form a multi-turn structure. The air flow in the blending cup is reduced in velocity after passing through the multi-turn structures, and the speed of the sound waves is also slowed down, thereby achieving the effect of reducing noise. However, this air outlet structure has the disadvantage of not having smooth exhaust, and there is also the problem that food particles in the air flow are easily retained in the air outlet structure, causing blockage. Utility Model Content

[0004] The utility model aims to provide a food processing machine with reduced exhaust noise, which reduces the noise and solves the problem that the exhaust of the exhaust structure is not smooth enough.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a food processor for reducing exhaust noise, comprising a main unit assembly, a stirring cup assembly and a motor, the stirring cup assembly comprising a stirring cup, a stirring knife arranged in the stirring cup, and a stirring cup cover sealed on the mouth of the stirring cup, the motor drives the stirring knife to rotate, the central area of ​​the stirring cup cover is provided with an inner ring guard rib and an outer ring guard rib, the outer ring guard rib surrounds the outer side of the inner ring guard rib, and an axially through exhaust hole is formed between the outer ring guard rib and the inner ring guard rib, the exhaust hole is circumferentially provided with a plurality of spirally distributed vortex blades, a vortex channel is formed between two circumferentially adjacent vortex blades, the airflow passing through the exhaust hole is divided into a plurality of small airflows by the plurality of vortex channels and the movement direction of the airflow is changed by the vortex blades, so as to reduce the airflow velocity and airflow impact.

[0006] After adopting the above technical scheme, the utility model has the following advantages: by arranging a plurality of spirally distributed vortex blades along the circumferential direction of the exhaust hole, and forming a vortex channel between two circumferentially adjacent vortex blades, when exhaust is needed, an axially through exhaust hole formed between the outer ring guard rib and the inner ring guard rib can guide the airflow to the vortex channel, and the airflow is divided into a plurality of small airflows by the plurality of vortex channels when passing through the exhaust hole, thereby, the flow velocity of the airflow in the vortex channel is slowed down, and the movement direction is changed with the vortex blades, and under the guidance of the vortex blades, the airflow will not stay in the axially through exhaust hole, but flows along the movement direction of the vortex blades, thereby solving the problem of insufficient exhaust, and effectively avoiding the occurrence of noise caused by large-area airflow impact during the exhaust process; the outer ring guard rib and the inner ring guard rib are designed in the central area of ​​the mixing cup cover, so that the airflow noise generated by the entire food processor can be effectively controlled, providing users with a quieter and more comfortable use experience.

[0007] Furthermore, in two circumferentially adjacent vortex blades, there is a circumferential spacing space between the front end of the rear vortex blade and the rear end of the front vortex blade.

[0008] By adopting the above-mentioned technical solution, the setting of the circumferential spacing space effectively reduces the obstacles encountered by the airflow between the vortex blades, reduces the possibility of airflow blockage, improves the exhaust flow and exhaust efficiency, and reduces the loss of airflow kinetic energy.

[0009] Furthermore, the lower ends of the inner ring retaining rib and the outer ring retaining rib both protrude downward from the bottom surface of the stirring cup cover, and the lower end of the inner ring retaining rib is located above the lower end of the outer ring retaining rib.

[0010] By adopting the above-mentioned technical solution, the outer ring guard rib surrounds the outside of the inner ring guard rib, and the lower ends of the inner ring guard rib and the outer ring guard rib both protrude downward from the bottom surface of the stirring cup lid. The positions of the inner ring guard rib and the outer ring guard rib are relative, so that the airflow will be guided and adjusted by the inner and outer ring guard ribs when passing through the exhaust hole, so that more airflow will flow to the exhaust hole, achieving a better exhaust effect.

[0011] Furthermore, a closed end cover is integrally formed at the upper end of the inner ring retaining rib; and / or a feeding cover is connected to the upper end of the outer ring retaining rib, and the feeding cover is provided with a closing plug, which is inserted into the inner side of the upper end of the inner ring retaining rib to close the upper end of the inner ring retaining rib.

[0012] By adopting the above-mentioned technical solution, the design of the closed end cover and the feeding cover can effectively close the upper ends of the inner ring guard ribs and the outer ring guard ribs. By closing the top, the direction of the airflow can be better controlled, so that the airflow can be discharged through the vortex channel, thereby effectively maintaining the noise control effect. At the same time, it can also prevent food or liquid from penetrating into the interior of the food processor, thereby improving the hygienic performance of the food processor; the design of the closing plug makes it easy for users to take the feeding cover to feed.

[0013] Furthermore, a central recess is provided in the central area of ​​the stirring cup cover, the inner ring retaining rib and the outer ring retaining rib are both provided in the central recess, the upper ends of the inner ring retaining rib and the outer ring retaining rib both protrude upward from the inner bottom surface of the recess; and / or, the upper end of the inner ring retaining rib is lower than the upper end of the outer ring retaining rib.

[0014] By adopting the above-mentioned technical solution, the central recess lowers the height of the central area of ​​the blender cup cover, making the structure of the blender cup more compact, ensuring the structural strength and functionality of the blender cup while being convenient for users to carry and store; the upper ends of the inner ring guard ribs and the outer ring guard ribs both protrude upward from the inner bottom surface of the recess, so that the airflow can be discharged from the middle of the central recess in a more concentrated manner.

[0015] Furthermore, the upper end of the outer ring retaining rib is connected to a feeding cover, and the feeding cover is provided with an air outlet, and the air outlet is connected to the air outlet to form an exhaust channel connecting the inside and outside of the stirring cup.

[0016] By adopting the above-mentioned technical solution, the air outlet hole on the feeding cover is connected with the exhaust hole to form an exhaust channel, which can more effectively guide the airflow inside the mixing cup to flow out, ensure smooth exhaust, and avoid obstruction of the airflow inside the mixing cup.

[0017] Furthermore, the air outlet includes an air inlet end arranged on the inner side of the feeding cover and an air outlet end arranged on the outer side of the feeding cover, and the air inlet end faces the radial outer side of the feeding cover and forms a vertical angle with the air outlet end.

[0018] By adopting the above-mentioned technical solution, the air inlet end is arranged on the inner side of the feeding cover, which can reduce the entry of foreign matter such as dust and impurities into the interior of the mixing cup, and help maintain the cleanliness and normal operation of the inside of the mixing cup; the air inlet end and the air outlet end are at a vertical angle, which helps to reduce the flow rate of the air flow, so that the air flow flows more smoothly and evenly through the exhaust channel.

[0019] Furthermore, the air outlet is arranged at the edge of the feeding cover; and / or the feeding cover is buckled with the outer ring retaining rib.

[0020] By adopting the above-mentioned technical solution, the air outlet is located at the edge of the feeding cover, and this position is located in the guiding direction of the vortex blade, thereby improving the exhaust efficiency and reducing the possibility of the airflow forming a dead corner in the air outlet channel and being unable to be discharged; the design of the feeding cover and the outer ring retaining rib snap-fitting together makes it easy for the user to access and observe the internal state of the exhaust component, and can also reduce the entry of external dust, impurities and other substances into the exhaust channel.

[0021] Furthermore, the guide angle of the vortex blade is 5 to 45 degrees; and / or, 3 to 10 vortex blades are evenly distributed along the circumference of the stirring cup cover.

[0022] By adopting the above-mentioned technical scheme, the setting of the guide angle can effectively extend the length of the vortex channel, thereby extending the airflow transmission path, increasing the action time of the vortex blades on the airflow, allowing the airflow to pass more smoothly, and reducing the generation of noise. A moderate guide angle can ensure that the airflow is effectively guided and adjusted, and can well change the direction and speed of the airflow movement. The airflow diverts the exhaust gas along the spiral angle of the vortex blades, reducing the vortex noise and overflow caused by the impact of the airflow, and can improve the exhaust performance. The guide angle of the vortex blade is in the range of 5 to 45 degrees, which provides greater adaptability and can meet the exhaust needs in a larger range. Setting a plurality of circumferentially evenly distributed vortex blades helps to form a uniform and orderly vortex. Multiple vortex blades can well divert the discharged high-pressure airflow, thereby reducing the airflow speed and airflow impact, thereby more effectively dividing the airflow and improving the exhaust effect.

[0023] Furthermore, a screw-on structure is provided between the stirring cup cover and the mouth of the stirring cup; and / or a cup cover sealing ring is provided between the stirring cup cover and the mouth of the stirring cup.

[0024] By adopting the above-mentioned technical solution, the screw-on structure allows the blending cup lid to be easily tightened or unscrewed, making the cleaning and maintenance of the blending cup lid and the mouth of the blending cup more convenient and easy for users to operate. The sealing and non-sealing states between the blending cup lid and the mouth of the blending cup can be changed by screwing on the screw-on structure, which helps prevent airflow from leaking without passing through the vortex blades, improves exhaust efficiency, and provides users with a better user experience. The sealing ring can further improve the air tightness between the blending cup lid and the mouth of the blending cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] Figure 1 It is a cross-sectional view of the food processing machine in the utility model;

[0027] Figure 2 It is a partial cross-sectional view of the food processing machine in the utility model (I);

[0028] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0029] Figure 4 It is a structural schematic diagram of the food processing machine in the utility model;

[0030] Figure 5 It is an exploded view of the food processing machine in the utility model;

[0031] Figure 6 It is a partial cross-sectional view (II) of the food processing machine in the utility model;

[0032] Figure 7 It is a cross-sectional view of the stirring cup assembly in the utility model;

[0033] Figure 8 It is a cross-sectional view (I) of the cup cover in the utility model;

[0034] Fig. 9 This is a cross-sectional view of the cup cover in the utility model (II);

[0035] Fig.10 This is a schematic diagram of the cup cover structure of the utility model (I);

[0036] Fig.11 This is a schematic diagram of the cup cover structure of the utility model (II);

[0037] Fig.12 This is a schematic diagram of the cup cover structure of the utility model (III);

[0038] Figure numerals: stirring cup assembly 1, stirring cup 11, stirring blade 12, stirring cup cover 13, inner ring retaining rib 131, outer ring retaining rib 132, exhaust hole 133, vortex blade 134, closed end cover 135, feeding cover 136, air outlet 1361, air inlet end 1362, air outlet end 1363, central recess 137, main unit assembly 2, cup cover sealing ring 3, screw-on structure 4, exhaust channel 100, vortex channel 200. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0040] The terms "first", "second", etc. (if any) in the specification and claims of the present utility model are used to distinguish similar objects, rather than to describe a specific order or sequence. Even if "second" is used to distinguish a certain technical feature, it does not necessarily mean that it has "first". It should be understood that in the present utility model, "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. It should be understood that in the present utility model, "multiple" refers to two or more. "And / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "Contains X, Y and Z", "Contains X, Y, Z" means that X, Y, and Z are all included, "Contains X, Y or Z" means that one of X, Y, and Z is included, and "Contains X, Y and / or Z" means that any one, any two, or three of X, Y, and Z are included.

[0041] The following specific embodiments are used to describe the technical solution of the utility model in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0042] like Figures 1 to 12As shown, the utility model provides a food processor for reducing exhaust noise, comprising a main unit assembly 2, a stirring cup assembly 1 and a motor, wherein the stirring cup assembly 1 comprises a stirring cup 11, a stirring blade 12 arranged in the stirring cup 11, and a stirring cup cover 13 sealed at the mouth of the stirring cup, the motor drives the stirring blade 12 to rotate, and the central area of ​​the stirring cup cover 13 is provided with an inner ring retaining rib 131 and an outer ring retaining rib 132, the outer ring retaining rib 132 surrounds the outer side of the inner ring retaining rib 131, and an axially through exhaust hole 133 is formed between the outer ring retaining rib 132 and the inner ring retaining rib 131, the exhaust hole 133 is circumferentially provided with a plurality of spirally distributed vortex blades 134, a vortex channel 200 is formed between two circumferentially adjacent vortex blades 134, the airflow passing through the exhaust hole 133 is divided into a plurality of small airflows by the plurality of vortex channels 200 and the movement direction of the airflow is changed by the vortex blades 134, so as to reduce the airflow velocity and airflow impact. By arranging a plurality of spirally distributed vortex blades 134 along the circumferential direction of the exhaust hole 133, and forming a vortex channel 200 between two circumferentially adjacent vortex blades 134, when exhaust is required, the channel formed by the axially penetrating exhaust holes 133 formed between the outer ring retaining rib 132 and the inner ring retaining rib 131 can guide the airflow to flow to the vortex channel 200. When the airflow passes through the exhaust hole 133, it is divided into a plurality of small airflows by the plurality of vortex channels 200. The airflow direction is as follows: Figure 6 As shown in the direction of the arrow, the flow velocity of the airflow in the vortex channel 200 is slowed down and the movement direction is changed with the vortex blade 134. Under the guidance of the vortex blade 134, the airflow will not stay in the axially through-hole 133, but will flow upward along the movement direction of the vortex blade 134, thereby solving the problem of insufficient exhaust, and effectively avoiding the occurrence of noise caused by large-area airflow impact during the exhaust process; the outer ring retaining rib 132 and the inner ring retaining rib 131 are designed in the central area of ​​the mixing cup cover 13, so that the airflow noise generated by the entire food processor can be effectively controlled, providing users with a quieter and more comfortable use experience.

[0043] In the present embodiment, there is a circumferential spacing space between the front end of the rear vortex blade 134 and the rear end of the front vortex blade 134 of the two circumferentially adjacent vortex blades 134, and the distance between the two vortex blades 134 is H, and the length of H is 1mm≤H≤3mm. The existence of a circumferential spacing space between the vortex blades 134 means that a certain distance is set between the front end of the rear vortex blade 134 and the rear end of the front vortex blade 134. The setting of the circumferential spacing space effectively reduces the obstacles encountered by the airflow between the vortex blades 134, reduces the possibility of airflow blockage, improves the exhaust flow and exhaust efficiency, and reduces the loss of airflow kinetic energy. When H is less than 1mm, H is too small, which may cause airflow blockage and ineffective discharge to the outside; when H is greater than 3mm, H is too large, which may cause the structure to be too large, and the airflow is discharged from the spacing space between the two vortex blades 134 without passing through the vortex channel, and the vortex channel and vortex blades cannot function effectively. The distance D between the vortex blade 134 and the outer ring retaining rib 132 is in the range of 2mm≤D≤8mm. The appropriate distance between the vortex blade 134 and the outer ring retaining rib 132 can avoid interference between the vortex blade 134 and the outer ring retaining rib 132. If D is less than 2mm, the distance is too small, which may lead to increased interference between the vortex blade 134 and the outer ring retaining rib 132, which may cause problems such as wear and increased noise of the food processor; if D is greater than 8mm, the distance is too large, which may cause the fluid to be too sparse between the vortex blade 134 and the outer ring retaining rib 132, causing the vortex power of the vortex blade 134 to decrease, the airflow to become unstable, and affect the exhaust.

[0044] Specifically, the guide angle α of the vortex blade 134 is 5 to 45 degrees. The setting of the guide angle can effectively extend the length of the vortex channel 200, thereby extending the airflow transmission path, increasing the action time of the vortex blade 134 on the airflow, allowing the airflow to pass more smoothly, and reducing the generation of noise. A moderate guide angle can ensure that the airflow is effectively guided and adjusted, and can well change the direction and speed of the airflow movement. The airflow is diverted along the spiral angle of the vortex blade 134 to reduce the vortex noise and overflow caused by the impact of the airflow, thereby improving the exhaust performance. The guide angle of the vortex blade 134 is in the range of 5 to 45 degrees, which provides greater adaptability and can meet exhaust requirements in a wider range.

[0045] In addition, 3 to 10 vortex blades 134 are evenly distributed along the circumference of the stirring cup cover 13. The provision of multiple circumferentially evenly distributed vortex blades 134 is conducive to forming a uniform and orderly vortex. The multiple vortex blades 134 can well divert the discharged high-pressure airflow, thereby reducing the airflow speed and airflow impact, thereby more effectively dividing the airflow and improving the exhaust effect.

[0046] In this embodiment, the lower ends of the inner ring retaining rib 131 and the outer ring retaining rib 132 both protrude downward from the bottom surface of the stirring cup cover 13, the lower end of the inner ring retaining rib 131 is located above the lower end of the outer ring retaining rib 132, the outer ring retaining rib 132 surrounds the outside of the inner ring retaining rib 131, and the lower ends of the inner ring retaining rib 131 and the outer ring retaining rib 132 both protrude downward from the bottom surface of the stirring cup cover 13. Due to the relative positions of the inner ring retaining rib 131 and the outer ring retaining rib 132, the airflow will be guided and adjusted by the inner ring retaining rib 131 and the outer ring retaining rib 132 when passing through the exhaust hole 133, so that more airflow will flow to the exhaust hole 133, achieving a better exhaust effect.

[0047] In order to better control the flow of airflow, a closed end cover 135 is integrally formed at the upper end of the inner ring retaining rib 131. The closed end cover 135 can effectively close the upper ends of the inner ring retaining rib 131 and the outer ring retaining rib 132. By closing the top, the direction of the airflow can be better controlled, so that the airflow can be discharged through the vortex channel, thereby effectively maintaining the noise control effect. At the same time, it can also prevent food or liquid from penetrating into the interior of the food processor, thereby improving the hygiene performance of the food processor.

[0048] In this embodiment, a central recess 137 is provided in the central area of ​​the blending cup cover 13, and the inner ring retaining rib 131 and the outer ring retaining rib 132 are both provided in the central recess 137. The upper ends of the inner ring retaining rib 131 and the outer ring retaining rib 132 both protrude upward from the inner bottom surface of the recess. The central recess 137 reduces the height of the central area of ​​the blending cup cover 13, making the structure of the blending cup 11 more compact, ensuring the structural strength and functionality of the blending cup 11 while being convenient for users to carry and store.

[0049] Specifically, the upper end of the inner ring retaining rib 131 is lower than the upper end of the outer ring retaining rib 132 , so that the airflow can be discharged from the middle of the central recess 137 in a more concentrated manner.

[0050] To ensure effective discharge of airflow, an air outlet 1361 is provided on the feeding cover 136, and the exhaust hole 133 is connected with the air outlet 1361 to form an exhaust channel 100 connecting the inside and outside of the stirring cup 11. The air outlet 1361 on the feeding cover 136 is connected with the exhaust hole 133 to form an exhaust channel 100, which can more effectively guide the airflow inside the stirring cup 11 to flow out, ensure smooth exhaust, and avoid obstruction of the airflow out of the stirring cup 11. The airflow is weakened when passing through the channel formed by the exhaust hole 133, and then after passing through the multi-channel vortex blades 134, the airflow is weakened for the second time, and finally discharged through the air outlet 1361. The airflow is decelerated for multiple times, and the airflow speed is greatly reduced, thereby reducing the noise of airflow impact.

[0051] In addition, in the present embodiment, the air outlet 1361 includes an air inlet end 1362 disposed on the inner side of the feeding cover 136 and an air outlet end 1363 disposed on the outer side of the feeding cover 136, wherein the air inlet end 1362 faces the radial outer side of the feeding cover 136 and is at a vertical angle to the air outlet end 1363. The air inlet end 1362 is disposed on the inner side of the feeding cover 136, which can reduce the entry of foreign matter such as dust and impurities into the interior of the mixing cup 11, thereby helping to maintain the cleanliness and normal operation of the interior of the mixing cup 11; the air inlet end 1362 and the air outlet end 1363 are at a vertical angle, which helps to reduce the flow rate of the airflow, allowing the airflow to flow more smoothly and evenly through the exhaust channel 100, further reducing the noise and overflow problems caused by the impact of the airflow.

[0052] Specifically, the air outlet 1361 is arranged at the edge of the feeding cover 136. The air outlet 1361 is located at the edge of the feeding cover 136, and this position is located in the guiding direction of the vortex blade 134, which can ensure that the airflow can be discharged smoothly through the air outlet, avoiding unnecessary obstruction of the airflow during the exhaust process, thereby improving the exhaust efficiency and reducing the possibility of the airflow forming a dead corner in the outlet channel and being unable to be discharged.

[0053] It is understandable that in other embodiments, the feeding cover 136 is provided with a closing plug, which is inserted into the inner side of the upper end of the inner ring retaining rib 131 to close the upper end of the inner ring retaining rib 131. The design of the closing plug facilitates the user to take the feeding cover 136 for feeding.

[0054] In this embodiment, the feeding cover 136 is snap-fitted with the outer ring retaining rib 132. The design of snap-fitting between the feeding cover 136 and the outer ring retaining rib 132 facilitates the user to access and observe the internal state of the exhaust component, and can also reduce the entry of external dust, impurities and other substances into the exhaust channel 100.

[0055] In addition, a screw-on structure 4 is provided between the stirring cup cover 13 and the mouth of the stirring cup. The screw-on structure 4 allows the stirring cup cover 13 to be easily tightened or unscrewed, making it more convenient to clean and maintain the stirring cup cover 13 and the mouth of the stirring cup, and is convenient for users to operate. The screw-on structure 4 can change the sealing and non-sealing states between the stirring cup cover 13 and the mouth of the stirring cup, which helps prevent airflow from leaking without passing through the vortex blades 134, improves exhaust efficiency, and provides users with a better user experience.

[0056] In order to further ensure the airtightness between the stirring cup cover 13 and the mouth of the stirring cup, a cup cover sealing ring 3 is provided between the stirring cup cover 13 and the mouth of the stirring cup.

[0057] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A food processor for reducing exhaust noise, comprising a main unit assembly, a stirring cup assembly and a motor, wherein the stirring cup assembly comprises a stirring cup, a stirring blade disposed in the stirring cup, and a stirring cup cover sealed at the mouth of the stirring cup, wherein the motor drives the stirring blade to rotate, and wherein: An inner ring retaining rib and an outer ring retaining rib are provided in the central area of ​​the stirring cup cover, the outer ring retaining rib surrounds the outer side of the inner ring retaining rib, and an axially through exhaust hole is formed between the outer ring retaining rib and the inner ring retaining rib, the exhaust hole is circumferentially provided with a plurality of spirally distributed vortex blades, a vortex channel is formed between two circumferentially adjacent vortex blades, the airflow passing through the exhaust hole is divided into a plurality of small airflows by the plurality of vortex channels and the movement direction of the airflow is changed by the vortex blades, so as to reduce the airflow velocity and airflow impact.

2. A food processor for reducing exhaust noise according to claim 1, characterized in that: In two circumferentially adjacent vortex blades, a circumferential spacing space is provided between the front end of the rear vortex blade and the rear end of the front vortex blade.

3. A food processor for reducing exhaust noise according to claim 1, characterized in that: The lower ends of the inner ring retaining rib and the outer ring retaining rib both protrude downward from the bottom surface of the stirring cup cover, and the lower end of the inner ring retaining rib is located above the lower end of the outer ring retaining rib.

4. A food processor with reduced exhaust noise according to claim 3, characterized in that: The upper end of the inner ring retaining rib is integrally formed with a closed end cover; and / or the upper end of the outer ring retaining rib is connected to a feeding cover, and the feeding cover is provided with a closing plug, which is inserted into the inner side of the upper end of the inner ring retaining rib to close the upper end of the inner ring retaining rib.

5. A food processor with reduced exhaust noise according to claim 3, characterized in that: A central recess is provided in the central area of ​​the stirring cup cover, the inner ring retaining rib and the outer ring retaining rib are both provided in the central recess, and the upper ends of the inner ring retaining rib and the outer ring retaining rib both protrude upward from the inner bottom surface of the recess; and / or, the upper end of the inner ring retaining rib is lower than the upper end of the outer ring retaining rib.

6. A food processor with reduced exhaust noise according to claim 1, characterized in that: The upper end of the outer ring retaining rib is connected with a feeding cover, and the feeding cover is provided with an air outlet hole. The air outlet hole is connected with the air outlet hole to form an exhaust channel connected with the inside and outside of the stirring cup.

7. A food processor with reduced exhaust noise according to claim 6, characterized in that: The air outlet comprises an air inlet end arranged on the inner side of the feeding cover and an air outlet end arranged on the outer side of the feeding cover, wherein the air inlet end faces the radial outer side of the feeding cover and forms a vertical angle with the air outlet end.

8. A food processor with reduced exhaust noise according to claim 6, characterized in that: The air outlet is arranged at the edge of the feeding cover; and / or the feeding cover is buckled with the outer ring retaining rib.

9. A food processor with reduced exhaust noise according to claim 1, characterized in that: The guide angle of the vortex blade is 5 to 45 degrees; and / or, 3 to 10 vortex blades are evenly distributed along the circumference of the stirring cup cover.

10. A food processor with reduced exhaust noise according to claim 1, characterized in that: A twist-on structure is provided between the stirring cup cover and the mouth of the stirring cup; and / or a cup cover sealing ring is provided between the stirring cup cover and the mouth of the stirring cup.

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