A food processor

Abstract

This invention relates to kitchen appliances, specifically a food processor, comprising a housing, a grinding cup assembly disposed within the housing, and a support base for supporting the grinding cup assembly. The support base is located at the bottom of the housing and fixed thereto. The grinding cup assembly includes a grinding cup, a motor mounted at the bottom of the grinding cup, and a connecting bracket. The connecting bracket is located outside the motor, with its upper end fixedly connected to the grinding cup and its lower end supported by the support base via a flexible positioning structure. The fulcrum of the support base supporting the connecting bracket is lower than the center of gravity of the motor. When the motor is operating, the grinding cup assembly floats on the support base. A limiting member is provided within the housing at the upper part of the grinding cup to radially and axially limit the grinding cup. The limiting member has a limiting cavity, within which the upper part of the grinding cup floats. During operation, this food processor not only further reduces resonance noise but also significantly improves the cleaning effect of the grinding cup.

Description

Technical Field

[0001] This invention relates to kitchen appliances, and in particular to a food processing machine. Background Technology

[0002] A utility model patent with patent number CN202020298078.7, entitled "Food Processor," has been published. This patent discloses a first vibration damping component between the cup body and the motor cover. The vibration generated when the food processor is blending ingredients can be largely absorbed by this first damping component, thereby reducing the resonance generated by the motor cover and effectively reducing vibration and noise during operation. Furthermore, another invention patent application with application number CN201811390589.5, entitled "A Silent Food Processor," discloses a method of completely isolating the cup body assembly from the base and allowing the cup opening to float relative to the shell, which can significantly reduce noise generated during operation.

[0003] The inventors conducted research on the aforementioned patented technology and found that it can indeed significantly reduce the pulping noise of food processors. However, at the same time, the inventors also discovered that when increasing the motor's grinding power to improve the grinding efficiency and fineness of the ingredients, although vibration damping components or isolation structures can absorb or isolate some vibration energy, the different resonant frequencies of the various components of the food processor mean that when the motor power increases, the vibration frequency generated by the motor is even higher, which may still cause resonance in other components of the food processor. Moreover, when making rice paste using the aforementioned food processor or food processing machine, white residue easily adheres to the inner wall of the cup, which is difficult to clean. Summary of the Invention

[0004] The purpose of this invention is to provide a food processing machine that, during operation, can not only further reduce resonance noise but also significantly improve the cleaning effect of the grinding cup.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a food processing machine, comprising a housing, a grinding cup assembly disposed within the housing, and a support base for supporting the grinding cup assembly, wherein the support base is located at the bottom of the housing and fixed to the housing, characterized in that: the grinding cup assembly comprises a grinding cup, a motor mounted at the bottom of the grinding cup, and a connecting bracket, wherein the connecting bracket is located outside the motor, and its upper end is fixedly connected to the grinding cup, and its lower end is supported by the support base through a flexible positioning structure, and the fulcrum of the support base supporting the connecting bracket is lower than the center of gravity of the motor, wherein when the motor is working, the grinding cup assembly floats on the support base, wherein the upper part of the grinding cup is located at the upper part of the grinding cup, and a limiting member is provided inside the housing for radial and axial limiting of the grinding cup, the limiting member having a limiting cavity, and the upper part of the grinding cup floats within the limiting cavity.

[0006] Furthermore, the flexible positioning structure includes a positioning hole, a positioning post inserted into the positioning hole, and a flexible element. The connecting bracket and the support base have a positioning hole on one side and a corresponding positioning post on the other side. The flexible element is used to isolate the connecting bracket and the support base when the positioning post is inserted into the positioning hole.

[0007] Furthermore, the flexible component is a silicone sleeve, which is fitted onto the outside of the positioning post, and the positioning post and the silicone sleeve are inserted together into the positioning hole. The rear end of the silicone sleeve is also provided with an outward flange. When the crushing cup assembly is installed on the support base, the connecting bracket and the support base clamp the flange.

[0008] Alternatively, the flexible component may be a shock-absorbing spring, which is fitted onto the outside of the positioning post;

[0009] Alternatively, the axial engagement distance between the positioning post and the positioning hole is greater than the axial floating distance of the crushing cup assembly.

[0010] Furthermore, the cavity wall of the limiting cavity is provided with buffer ribs, which are arranged circumferentially around the crushing cup.

[0011] Alternatively, the outer wall of the pulverizing cup is provided with an outward protrusion, the protrusion is located in the limiting cavity, the protrusion is annular, and a shock-absorbing ring is wrapped around the outside of the protrusion to isolate the limiting member from the pulverizing cup.

[0012] Alternatively, the limiting component can be integrally formed with the housing;

[0013] Alternatively, the limiting member can be fixed to the inner wall of the housing;

[0014] Alternatively, the food processor may also include a cover plate that is fitted onto the top of the housing and conceals the limiting element within the housing, with a sealing ring provided in the gap between the cover plate and the grinding cup.

[0015] Furthermore, the limiting member is a limiting ring fitted on the outside of the crushing cup, and the limiting cavity is an annular cavity formed by the inner wall of the limiting ring and the outer wall of the crushing cup.

[0016] Alternatively, the mouth of the grinding cup protrudes out of the outer side of the housing, and a cup lid is sealed at the mouth of the cup. The cup lid has an auxiliary cavity into which liquid can flow upward, and the cup lid and the grinding cup enclose a pulping chamber.

[0017] Furthermore, the connecting bracket is a motor cover fitted onto the outside of the motor.

[0018] Furthermore, the rear end of the motor cover has an opening, and the support base is provided with an air duct that communicates with the outside. The opening is flexibly connected to the inlet of the air duct, and the rear end of the motor is provided with a circulating fan that extends from the rear end opening of the motor cover and into the air duct inlet.

[0019] Alternatively, the motor cover may include an inner wall, an outer wall, and a soundproof cavity located between the inner wall and the outer wall.

[0020] Furthermore, a first shock absorber is provided between the motor and the crushing cup;

[0021] Alternatively, a second shock absorber may be provided between the connecting bracket and the crushing cup;

[0022] Alternatively, the pulverizing cup may be a metal cup body integrally formed with the heating tube;

[0023] Alternatively, the connecting bracket may be a connecting column that connects the crushing cup to the support base.

[0024] Furthermore, the support base has an air duct, and the support base includes a base for supporting the crushing cup assembly and a bottom shell fixed to the base, the air duct being formed by the base and the bottom shell enclosing each other.

[0025] Furthermore, the distance from the fulcrum to the front end of the motor body is not less than 1 / 2 of the height of the motor body.

[0026] By adopting the above technical solution, the grinding cup assembly can float on the support base. On the one hand, the grinding cup assembly will generate high-frequency vibration due to the motor's vibration; on the other hand, the grinding cup assembly will also generate low-frequency vibration due to its own floating. When the high-frequency and low-frequency vibrations are superimposed, the vibration amplitude of the grinding cup assembly will be greatly attenuated, thus significantly reducing the probability of resonance noise caused by other components of the food processor. Moreover, even if the motor's grinding power is increased, the low-frequency floating of the grinding cup assembly itself will increase, thereby significantly offsetting the resonance phenomenon caused by the motor's high-frequency vibration. Simultaneously, since the fulcrum of the support base connecting the bracket is lower than the motor's center of gravity, the radial oscillation frequency and amplitude of the upper part of the grinding cup, which is far from the fulcrum, will intensify. During cleaning, the force and height of the cleaning water surging up and washing the inner wall of the grinding cup will increase accordingly. Furthermore, due to the increased radial oscillation frequency of the grinding cup, the frequency of the cleaning water repeatedly rinsing the inner wall of the grinding cup will also increase, thereby cleaning away the residue adhering to the inner wall of the grinding cup and significantly improving the self-cleaning effect of the food processor. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the structure of an embodiment of the food processing machine of the present invention;

[0029] Figure 2 for Figure 1 A cross-sectional schematic diagram of a food processing machine;

[0030] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0031] Figure 4 for Figure 2 Enlarged structural diagram at point B;

[0032] Figure 5 for Figure 2 Schematic diagram of the middle limiting component;

[0033] Figure 6 for Figure 2 Schematic diagram of the middle support base;

[0034] Figure 7 for Figure 1 A partial breakdown diagram. Detailed Implementation

[0035] Example:

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 The diagram shown is a structural schematic of an embodiment of the food processing machine of the present invention. A food processing machine includes a housing 1, a grinding cup assembly 2 disposed within the housing 1, and a support base 3 for supporting the grinding cup assembly 2. The support base 3 is located at the bottom of the housing 1 and fixed to the housing 1. The grinding cup assembly 2 includes a grinding cup 21, a motor 22 integrally connected to the grinding cup 21, and a connecting bracket 23. The motor 22 is located at the bottom of the grinding cup 21, and the connecting bracket 23 is located outside the motor 22, with its upper end fixedly connected to the grinding cup 21 and its lower end extending towards the rear end of the motor 22. Furthermore, the lower end of the connecting bracket 23 is connected to the support base 3 via a flexible positioning structure. When the motor 22 is operating, the grinding cup assembly 2 can float on the support base 3 via the flexible positioning structure.

[0037] In this embodiment, the grinding cup 21 is a metal cup body integrally formed with the heating element tube (not shown in the figure). A rotating shaft (not marked in the figure) driven by a motor 22 passes through the bottom of the grinding cup 21 and extends into it. A grinding device (not marked in the figure) is installed at the end of the rotating shaft. The opening of the grinding cup 21 protrudes beyond the outer side of the housing 1, and a cup lid 6 is sealed at the opening. The cup lid 6 has an auxiliary cavity (not shown in the figure) through which liquid can flow upwards. The cup lid 6 and the grinding cup 21 enclose a pulping chamber (not marked in the figure).

[0038] In this embodiment, the flexible positioning structure includes a positioning hole 34 on the support base 3, a positioning post 234 located at the lower end of the connecting bracket 23 and inserted into the positioning hole 34, and a flexible element 24. The flexible element 24 is used to isolate the connecting bracket 23 from the support base 3 when the positioning post 234 is inserted into the positioning hole 34. In this embodiment, the flexible element 24 is a silicone sleeve, which is fitted onto the outside of the positioning post 234, and the positioning post 234 and the silicone sleeve are inserted together into the positioning hole 34. The rear end of the silicone sleeve is also provided with an outward flange 241. When the crushing cup assembly 2 is installed on the support base 3, the connecting bracket 23 and the support base 3 clamp the flange 241. In this embodiment, the distance from the fulcrum W of the support base 3 for supporting the connecting bracket 23 to the front end of the motor body is required to be no less than 1 / 2 of the height of the motor body, so that the fulcrum W is lower than the center of gravity of the motor.

[0039] Optionally, in this embodiment, the connecting bracket 23 is a motor cover fitted around the outside of the motor 22, which can isolate the noise generated by the vibration of the motor 22. The rear end of the motor cover has an opening 230, and the support base 3 is provided with an air duct 30 communicating with the outside. The opening 230 and the inlet of the air duct 30 are flexibly connected by sound insulation cotton (not shown in the figure), and the rear end of the motor 22 is provided with a circulating fan 223 that extends from the rear opening 230 of the motor cover and into the air duct inlet. The support base 3 includes a base 31 for supporting the crushing cup assembly 2 and a bottom shell 32 fixed to the base 31. The air duct 30 is formed by the base 31 and the bottom shell 32.

[0040] In this embodiment, a limiting member 4 is provided inside the housing 1 at the upper part of the crushing cup 21 to radially and axially limit the crushing cup 21. The limiting member 4 is fixed to the inner wall of the housing 1 by screws (not marked in the figure), and the limiting member 4 has a limiting cavity 40. The upper part of the crushing cup 21 floats within the limiting cavity 40. The limiting member 4 is a limiting ring fitted onto the outside of the crushing cup 21 with a folded cross-section. The limiting cavity 40 is an annular cavity formed by the inner wall of the limiting ring and the outer wall of the crushing cup 21. The outer wall of the crushing cup 21 has an outwardly protruding part 211 located within the limiting cavity 40. The protruding part 211 is annular, and a shock-absorbing ring 5 is wrapped around the outside of the protruding part 211 to isolate the limiting member 4 from the crushing cup 21. Furthermore, the cavity wall of the limiting cavity 40 is provided with buffer ribs 41, which are spaced apart around the circumference of the crushing cup 21. A cover plate 7 is also provided at the top of the housing 1. The cover plate 7 covers the top of the housing 1 and hides the limiting member 4 inside the housing 1. A sealing ring 8 is provided in the gap between the cover plate 7 and the crushing cup 21 to prevent external impurities from entering the housing 1.

[0041] In this embodiment, by adopting the above technical solution, since the crushing cup assembly can float on the support base, the crushing cup assembly will generate high-frequency vibration due to the motor's vibration, and low-frequency vibration due to its own floating. When the high-frequency vibration and low-frequency vibration are superimposed, the vibration amplitude of the crushing cup assembly will be greatly attenuated, thereby greatly reducing the probability of resonance noise caused by other components of the food processor. Moreover, even if the crushing power of the motor is increased, the low-frequency floating of the crushing cup assembly itself will increase, thereby significantly offsetting the resonance phenomenon caused by the high-frequency vibration of the motor. At the same time, since the fulcrum W of the support base supporting the connecting bracket is lower than the center of gravity of the motor, the radial oscillation frequency and oscillation amplitude of the upper end of the crushing cup, which is far from the fulcrum W, will be intensified. During the cleaning of the food processor, on the one hand, the force and height of the cleaning water in the crushing cup rushing up to wash the inner wall of the crushing cup will increase accordingly. On the other hand, due to the increased radial oscillation frequency of the crushing cup, the frequency of the cleaning water repeatedly rinsing back and forth relative to the inner wall of the crushing cup will also increase, thereby washing away the residue adhering to the inner wall of the crushing cup and greatly improving the self-cleaning effect of the food processor.

[0042] It should be noted that in this embodiment, a first damping component can be provided between the motor and the grinding cup, and a second damping component can be provided between the connecting bracket and the grinding cup, which can further reduce the high-frequency vibration amplitude and reduce the generation of resonance noise. Meanwhile, in this embodiment, the flexible positioning structure of the connecting bracket and the support base is not limited to the scheme disclosed in this embodiment. For example, the positioning hole can be provided on the connecting bracket, and the positioning post can be provided on the support base; or, the flexible component can be a damping spring, and the damping spring can be fitted onto the outside of the positioning post, etc. It should be pointed out that in this embodiment, the motor body refers to the main body of the motor, including the stator, rotor, magnets, commutator, etc.

[0043] It should also be noted that in this embodiment, the axial fitting distance C1 between the positioning post and the positioning hole is required to be greater than the axial floating distance of the crushing cup assembly to prevent the crushing cup assembly from falling off the support base during axial floating. Of course, in this embodiment, the floating of the crushing cup assembly is not limited to axial floating. Due to the flexible positioning of the lower end of the connecting bracket and the support base, the crushing cup can float radially 360° around the flexible positioning structure, similar to a self-righting toy. In this embodiment, buffer ribs are provided on the cavity wall of the limiting cavity to locally limit the crushing cup during radial floating, preventing violent impacts. Of course, for this embodiment, the limiting component is not limited to the limiting ring and mounting structure; the limiting component can also be integrally formed with the housing.

[0044] Similarly, the connecting bracket in this embodiment is not limited to a motor cover; it can also be a connecting column that directly connects the crushing cup to the support base. Furthermore, the cup lid in this embodiment can be replaced with a large-capacity upper cup body. It should also be noted that, to further improve the sound insulation effect of the motor cover, it can be configured as a double-wall structure, for example, the motor cover includes an inner wall, an outer wall, and a sound insulation cavity located between the inner and outer walls. It should also be noted that, in this embodiment, the flexible positioning structure between the connecting bracket and the support base allows the crushing cup assembly to float on the support base. Therefore, other flexible positioning structures in the industry that can flexibly position the crushing cup assembly on the support base and allow it to float on the support base can also be applied to this embodiment.

[0045] The food processor in this embodiment is a hand-washable soymilk maker or high-speed blender. A water tank (not marked in the figure) is also installed on the rear of the food processor and mounted on a support base. The water tank can be connected to the grinding cup via a water supply device, allowing water to be introduced into the grinding cup for pulping or cleaning. It should also be noted that the food processor of this invention is not limited to a hand-washable product; it can also be a traditional high-speed blender.

[0046] Those skilled in the art will understand that this invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this invention will be included within the scope of the claims.

Claims

1. A food processing machine, comprising a housing, a grinding cup assembly disposed within the housing, and a support base for supporting the grinding cup assembly, wherein the support base is located at the bottom of the housing and fixed to the housing, characterized in that: The grinding cup assembly includes a grinding cup, a motor mounted on the bottom of the grinding cup, and a connecting bracket. The connecting bracket is located outside the motor, and its upper end is fixedly connected to the grinding cup. Its lower end is supported by a support base through a flexible positioning structure. The fulcrum of the support base supporting the connecting bracket is lower than the center of gravity of the motor. When the motor is working, the grinding cup assembly floats on the support base. The upper part of the grinding cup is located inside the housing and a limiting member is provided to limit the grinding cup radially and axially. The limiting member has a limiting cavity, which is an annular cavity formed by the inner wall of the limiting member and the outer wall of the grinding cup. The upper part of the grinding cup floats within the limiting cavity. The outer wall of the grinding cup is provided with an outward protrusion, which is located inside the limiting cavity. The protrusion is annular, and a shock-absorbing ring is wrapped around the outside of the protrusion to isolate the limiting member from the grinding cup. The food processing machine also includes a cover plate, which is installed on the top of the housing and hides the limiting member inside the housing. A sealing ring is provided in the gap between the cover plate and the grinding cup.

2. The food processing machine according to claim 1, characterized in that: The flexible positioning structure includes a positioning hole, a positioning post inserted into the positioning hole, and a flexible component. The connecting bracket and the support base have a positioning hole on one side and a corresponding positioning post on the other side. The flexible component is used to isolate the connecting bracket and the support base when the positioning post is inserted into the positioning hole.

3. The food processing machine according to claim 2, characterized in that: The flexible component is a silicone sleeve, which is fitted onto the outside of the positioning post. The positioning post and the silicone sleeve are inserted together into the positioning hole. The rear end of the silicone sleeve is also provided with an outward flange. When the crushing cup assembly is installed on the support base, the connecting bracket and the support base clamp the flange. Alternatively, the flexible component may be a shock-absorbing spring, which is fitted onto the outside of the positioning post; Alternatively, the axial engagement distance between the positioning post and the positioning hole is greater than the axial floating distance of the crushing cup assembly.

4. The food processing machine according to claim 1, characterized in that: The limiting cavity is provided with buffer ribs on its cavity wall, and the buffer ribs are arranged circumferentially around the crushing cup.

5. The food processing machine according to claim 1, characterized in that: The limiting component is a limiting ring fitted onto the outside of the crushing cup; Alternatively, the mouth of the grinding cup protrudes out of the outer side of the housing, and a cup lid is sealed at the mouth of the cup. The cup lid has an auxiliary cavity into which liquid can flow upward, and the cup lid and the grinding cup enclose a pulping chamber.

6. The food processing machine according to claim 1, characterized in that: The connecting bracket is a motor cover fitted onto the outside of the motor.

7. The food processing machine according to claim 6, characterized in that: The motor cover has an opening at its rear end, and the support base is provided with an air duct that communicates with the outside. The opening is flexibly connected to the inlet of the air duct, and the rear end of the motor is provided with a circulating fan that extends from the opening at the rear end of the motor cover and into the inlet of the air duct; or, the motor cover includes an inner wall, an outer wall, and a sound insulation cavity located between the inner wall and the outer wall.

8. The food processing machine according to claim 1, characterized in that: A first shock absorber is provided between the motor and the crushing cup; Alternatively, a second shock absorber may be provided between the connecting bracket and the crushing cup; Alternatively, the pulverizing cup may be a metal cup body integrally formed with the heating tube; Alternatively, the connecting bracket may be a connecting column that connects the crushing cup to the support base.

9. The food processing machine according to claim 1, characterized in that: The support base has an air duct, and the support base includes a base for supporting the crushing cup assembly and a bottom shell fixed to the base, the air duct being formed by the base and the bottom shell.

10. The food processing machine according to claim 1, characterized in that: The distance from the fulcrum to the front end of the motor body is not less than 1 / 2 of the height of the motor body.

11. The food processing machine according to claim 1, characterized in that: The limiting component is integrally formed with the housing; Alternatively, the limiting member is fixed to the inner wall of the housing.

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