A flat food processor

Abstract

The present invention discloses a flattened food processor, comprising a base and a blending cup mounted on the base. The base includes a housing, a motor, and an air duct through the motor. Along the airflow direction, the air duct comprises an air inlet channel upstream of the motor, an air outlet channel downstream of the motor, and a heat dissipation cavity between the inlet and outlet channels. The air duct includes an air inlet and an air outlet, each located on either side of the motor. The present invention has the beneficial effect of reducing the height of the base, and thereby the blending cup, thereby reducing shaking of the base and blending cup during processing and thereby reducing noise generation.

Description

Technical Field

[0001] The invention relates to food processing technology, in particular to a flat food processing machine. Background Art

[0002] Existing food processors generally consist of a base and a blender cup mounted on the base. The base includes a housing, a motor, and an air duct that flows through the motor. The bottom of the housing is equipped with an air inlet and outlet for the air duct. There are two air inlets, located on the left and right sides of the motor, and one air outlet, located on the rear side of the motor. The motor is wrapped in a motor cover, which encloses a heat dissipation chamber. The upper end of the motor cover forms an inlet for the heat dissipation chamber, which communicates with the air inlet. The lower end of the motor cover forms an outlet for the heat dissipation chamber, which communicates with the air outlet. The air duct includes the heat dissipation chamber, an air inlet channel that flows from the air inlet to the heat dissipation chamber inlet, and an air outlet channel that flows from the heat dissipation chamber outlet to the air outlet. A fan is located below the motor, located within the outlet channel. Driven by the fan, air enters the housing through the air inlets on the left and right sides of the motor, flows upward to the heat dissipation chamber inlet, then flows downward through the motor to the heat dissipation chamber outlet. Finally, it exits the housing through the air outlet, dissipating heat from the motor.

[0003] For existing food processors, the air outlet duct is located below the motor, which makes the height of the machine base higher, and in turn raises the height of the mixing cup, so that the center of gravity of the machine base and the mixing cup is increased, causing the machine base and the mixing cup to shake easily during the processing, increasing noise generation, which needs to be improved. Summary of the Invention

[0004] The present invention aims to provide a flattened food processor that can reduce the height of the machine base and thus the height of the mixing cup, thereby reducing the shaking of the machine base and the mixing cup during processing and thus reducing noise generation.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A flat food processor includes a machine base and a blending cup mounted on the machine base. The machine base includes a housing, a motor, and an air duct flowing through the motor. Along the direction of air flow, the air duct includes an air inlet channel located upstream of the motor, an air outlet channel located downstream of the motor, and a heat dissipation cavity located between the air inlet channel and the air outlet channel. The air duct includes an air inlet and an air outlet, and the air inlet and the air outlet are located on both sides of the motor.

[0007] By adopting the above technical solution, in existing food processors, the rear side of the heat dissipation chamber is located near the air outlet, the left and right sides of the heat dissipation chamber are located near the air inlet, and the front side of the heat dissipation chamber is located away from the air inlet and outlet. Therefore, in the shortest path from the air inlet to the air outlet, air easily flows through the left, right, and rear sides of the heat dissipation chamber, but has difficulty flowing through the front side. As a result, the heat dissipation efficiency of the left, right, and rear sides of the heat dissipation chamber is higher than that of the front side, resulting in poor uniform heat dissipation from the motor. To improve uniform heat dissipation from the motor, the motor cover is raised. In this case, the height of the air inlet duct increases the air's residence time in the duct, thereby increasing air distribution within the duct and allowing air to flow through the front side of the heat dissipation chamber, improving uniform heat dissipation from the motor. However, the height of the air inlet duct increases the height of the air duct, which in turn increases the height of the machine base. This, in turn, raises the height of the blender jar, raising the center of gravity of the machine base and blender jar. This can cause the machine base and blender jar to shake during processing, increasing noise generation. The air outlet duct is located below the motor. In this case, the base height is at least the sum of the heights of the motor and the air outlet duct. When the air outlet duct surrounds the side wall of the motor, the base height can be as low as the maximum of the two. This reduces the base height, and thus the height of the blender jar, minimizing movement of the base and jar during processing and thus reducing noise.

[0008] The motor is the primary source of noise in food processors. The noise generated by the motor is blocked upward by the blender bowl and downward by the work surface. Therefore, the noise primarily propagates outward from the motor's perimeter. In existing food processors, the air duct is located below the motor, making it unable to block the noise around the motor. However, when the air duct surrounds the motor's sidewalls, the noise generated by the motor is blocked as it propagates outward, thereby reducing the noise generated by the motor.

[0009] At the same time, the lowered height of the machine base and blender cup also makes it easier for people to take, place and operate, improving the user experience.

[0010] The present invention is further configured as follows: the motor is wrapped with a motor inner cover, a heat dissipation cavity is formed inside the motor inner cover, and an air outlet channel is formed outside the motor inner cover.

[0011] By adopting the above technical solution, the air outlet duct is located outside the motor inner cover, thereby being able to surround the motor located inside the motor inner cover. The noise generated by the motor is blocked by the motor inner cover, thereby reducing the propagation of the noise generated by the motor and playing a role in reducing noise.

[0012] The present invention is further configured as follows: a motor outer cover surrounds the motor inner cover, and an air outlet channel is formed between the motor inner cover and the motor outer cover.

[0013] By adopting the above technical solution, when the noise generated by the motor propagates outward from all sides of the motor, it will be blocked by the motor inner cover and the motor outer cover in turn when passing through the air outlet channel, thereby greatly reducing the propagation of the noise generated by the motor and playing a role in reducing noise.

[0014] The present invention is further configured as follows: a heat dissipation cavity is formed inside the motor, the heat dissipation cavity is provided with a heat dissipation cavity outlet for air to leave the heat dissipation cavity, the heat dissipation cavity outlet is located on the side wall of the motor, and the air outlet channel is connected to the heat dissipation cavity outlet.

[0015] By adopting the above technical solution, if the heat dissipation cavity outlet is located on the top wall or bottom wall of the motor, and the air outlet channel is connected to the heat dissipation cavity outlet, it is inevitable that part of the air outlet channel is located above or below the motor, so that the height of the machine base can only reach the sum of the heights of the part of the air outlet channel located above or below the motor and the motor, which is not conducive to lowering the height of the machine base, and further not conducive to lowering the height of the mixing cup, and is not conducive to reducing the shaking of the machine base and the mixing cup during processing, and is therefore not conducive to reducing noise generation.

[0016] The present invention is further configured such that: the air outlet channel spirally surrounds the motor.

[0017] By adopting the above technical solution, the spiral-shaped air outlet channel is characterized by gradually increasing in size along the air flow direction. At this time, the air will continuously emit and interfere with each other during its flow in the air outlet channel, thereby reducing noise.

[0018] The present invention is further configured as follows: the casing includes a main body, a base located below the main body, and a partition located between the main body and the base, the partition separates the air inlet channel and the air outlet channel, and a spiral wind shield is provided outside the heat dissipation cavity, one end of the wind shield abuts against the partition, and the other end abuts against the base or the main body so that the wind shield and the casing form an air outlet channel that spirally surrounds the motor.

[0019] The present invention is further configured such that: the air outlet channel is located within a height range of the motor.

[0020] By adopting the above technical solution, the base can be as low as the height of the motor, thus preventing the base from being affected by the air outlet. Therefore, the base height can be reduced, and in turn, the height of the blender cup can be reduced, reducing the shaking of the base and blender cup during processing, thereby reducing noise.

[0021] The present invention is further configured as follows: the height of the longitudinal overlapping portion of the air outlet channel and the motor is h, the height of the motor is D, and h / D=0.1-1:1.

[0022] By adopting the above technical solution, the air outlet duct is located within the height range of the motor. Therefore, the height of the longitudinal overlap between the air outlet duct and the motor is the same as the height of the air outlet duct. If h / D is less than 0.1, the height of the longitudinal overlap between the air outlet duct and the motor is too small, that is, the air outlet duct height is too small, resulting in high air flow resistance in the air outlet duct, requiring increased fan power, which is not conducive to reducing noise. Therefore, h / D = 0.1-1:1, which not only avoids excessive air flow resistance in the air outlet duct, but also reduces the height of the machine base, and thus the height of the blender cup, reducing the shaking of the machine base and blender cup during processing, thereby reducing noise generation.

[0023] The present invention is further configured as follows: the height of the air duct is Z, the distance between the horizontal projection of the air inlet and the horizontal projection of the motor shaft of the motor is X1, the distance between the horizontal projection of the air outlet and the horizontal projection of the motor shaft of the motor is X2, the sum of X1 and X2 is X, and Z<X.

[0024] In the present invention, Z < X, meaning the horizontal air movement distance in the air duct accounts for a higher proportion than the vertical air movement distance. Therefore, after reducing the vertical air movement distance, the horizontal air movement distance can be increased to compensate for the need for uniform air distribution, thereby improving the uniformity of heat dissipation from the motor. Reducing the vertical air movement distance in the air duct, i.e., lowering the height of the air duct, also reduces the height of the machine base, and accordingly, the height of the blender cup. This lowers the center of gravity of the machine base and blender cup, reducing shaking of the machine base and blender cup during processing, thereby reducing noise generation.

[0025] The height of the machine base is limited by the height of the air duct, and the maximum horizontal distance of the machine base is limited by the maximum horizontal distance of air in the duct. If the maximum horizontal distance of air in the duct is greater than the duct height, this means that the maximum horizontal distance of the machine base can be greater than the duct height, resulting in a flatter overall machine base. This lowered height and center of gravity increase the machine base's footprint, increasing its stability and reducing vibration and noise during machining.

[0026] At the same time, the lowered height of the machine base and blender cup also makes it easier for people to take, place and operate, improving the user experience.

[0027] The present invention is further configured as follows: the air inlet channel surrounds the air outlet channel; or the air inlet channel and the air outlet channel are located on both sides of the motor; or the air inlet channel is located above the air outlet channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of Example 1 of the present invention;

[0029] Figure 2 This is a schematic structural diagram of the base portion in Example 1 of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the base portion in the upward direction of embodiment 1 of the present invention;

[0031] Figure 4 This is a schematic structural diagram of the base portion of Example 1 of the present invention after the air inlet is displaced when viewed from above;

[0032] Figure 5 This is a schematic structural diagram of the base portion in Example 2 of the present invention;

[0033] Figure 6 This is a schematic structural diagram of the base portion in Example 3 of the present invention;

[0034] Figure 7 This is a schematic structural diagram of the base portion in Example 4 of the present invention;

[0035] Figure 8 This is an exploded view of Example 4 of the present invention;

[0036] Figure 9 This is a schematic diagram of the structure of the base in the upward direction in Example 4 of the present invention;

[0037] Figure 10 This is a schematic diagram of the structure of the base after the air inlet is displaced when viewed from above in Example 4 of the present invention;

[0038] Figure 11 This is a schematic structural diagram of the air outlet channel after deformation when viewed from above in the base in Example 4 of the present invention.

[0039] Figure 12 This is a schematic structural diagram of Example 5 of the present invention;

[0040] Figure 13 This is a schematic structural diagram of Example 6 of the present invention;

[0041] Figure 14 This is a structural diagram of Example 7 of the present invention;

[0042] Figure 15 This is a schematic diagram of the structure of Example 7 of the present invention when viewed from above, with the bottom cover and part of the base removed.

[0043] Figure 1: 1. base; 2. blending cup; 3. housing; 4. motor; 5. control assembly; 6. main body; 7. base; 8. top wall; 9. front side wall; 10. rear side wall; 11. left side wall; 12. right side wall; 13. air inlet; 14. air outlet; 15. motor inner cover; 16. motor outer cover; 17. stud; 18. motor cover sealing ring; 19. air outlet channel; 20. heat dissipation chamber; 21. connecting port; 22. fan; 23. air inlet channel; 24. circulation hole; 25. motor shaft; 26. rotor; 27. Stator; 28. Upper cover; 29. ​​Lower cover; 30. Heat dissipation channel; 31. Connecting hole; 32. Power board; 33. Control board; 34. Air inlet baffle; 35. Air outlet baffle; 36. Axis hole; 37. Heat dissipation chamber inlet; 38. Heat dissipation chamber outlet; 39. Positioning plate; 40. Upper mounting hole; 41. Placement portion; 42. Protrusion; 43. Through hole; 44. Support plate; 45. Lower mounting hole; 46. Bottom cover; 47. Wind shield; 48. Side mounting slot; 49. Side sound-absorbing cotton; 50. Bottom mounting slot; 51. Bottom sound-absorbing cotton. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below with reference to the accompanying drawings.

[0045] Example 1

[0046] Reference Figure 1 and 2 A flat food processing machine includes a machine base 1 and a mixing cup 2 mounted on the machine base 1. The machine base 1 includes a housing 3, a motor 4, and a control component 5.

[0047] Reference Figure 2 and 3The casing 3 includes a main body 6 and a base 7 located below the main body 6. The main body 6 includes a top wall 8, a front side wall 9, a rear side wall 10, a left side wall 11 and a right side wall 12. The top wall 8 of the main body 6 serves as the upper end of the casing 3, and the base 7 serves as the lower end of the casing 3. The maximum height difference between the top wall 8 of the main body 6 and the base 7, that is, the height of the casing 3, is H1, and H1≤100mm. Preferably, H1=80mm. The height of the base 1 of the existing food processing machine is generally around 200mm, which is equivalent to the maximum height of the base 1 of the present application being half the height of the base 1 of the existing food processing machine. Accordingly, the height of the mixing cup 2 can be lowered, so that the center of gravity of the base 1 and the mixing cup 2 is lowered, reducing the shaking of the base 1 and the mixing cup 2 during processing, thereby reducing noise generation. At the same time, the lowered height of the base 1 and the mixing cup 2 also makes it easier for people to take and operate, thereby improving user experience. The projected area of ​​the housing 3 in the horizontal plane is S, 0.005≤H1 / S≤0.08, and the unit is cm / cm2. Preferably, H1 / S=0.012cm / cm2. If H1 / S>0.08, the projected area of ​​the housing 3 in the horizontal plane is too small, and the housing 3 occupies a small area. During the operation of the food processor, the food processor needs to be placed on the work surface, and the housing 3 is in direct contact with the work surface. Therefore, the support surface of the housing 3 is too small, resulting in poor stability of the food processor on the work surface. If H1 / S<0.005, the projected area of ​​the housing 3 in the horizontal plane is too large, and the housing 3 occupies too large an area, which is not conducive to storage. 0.005≤H1 / S≤0.08, while ensuring the stability of the food processor when placed on the work surface, makes it convenient for the user to store the housing 3. When the blending cup 2 is mounted on the base 1, the total height of the base 1 and blending cup 2 is H2, where 0.03 ≤ H2 / S ≤ 0.35, expressed in cm / cm2. Preferably, H2 / S = 0.045 cm / cm2. If H2 / S > 0.35, the projected area of ​​the housing 3 in the horizontal plane is too small, and the housing 3 occupies a small area. During operation, the food processor needs to be placed on a work surface, with the housing 3 in direct contact with the work surface. Therefore, the support surface of the housing 3 is too small, resulting in poor stability on the work surface. If H2 / S < 0.03, the projected area of ​​the housing 3 in the horizontal plane is too large, and the housing 3 occupies an excessively large area, making it difficult to store. 0.03 ≤ H2 / S ≤ 0.35, while ensuring the stability of the food processor when placed on the work surface, facilitates storage of the housing 3 for the user. The base 7 has upwardly projecting steps near the left and right side walls 11 and 12, with air inlets 13 positioned on the steps. Air inlet 13 is located at one end of the base 7 near the front side wall 9, while an air outlet 14 is positioned on the rear side wall 10. The air inlet 13 and air outlet 14 are located on either side of a vertical interface that passes through the center of gravity of the motor 4.Motor 4 is located within the circle formed by the shortest connecting line of the projections of air inlet 13 and air outlet 14 onto a plane perpendicular to motor shaft 25. As much of the perimeter of motor 4 as possible is covered by air inlet 13 and air outlet 14, allowing air to flow through all areas of motor 4 and improving heat dissipation uniformity.

[0048] Reference Figure 2 The housing 3 is provided with a motor inner cover 15 that wraps around the motor 4 and a motor outer cover 16 that surrounds the motor inner cover 15. When the noise generated by the motor 4 propagates outward from all sides, it will be blocked by the motor inner cover 15 and the motor outer cover 16 in turn, thereby greatly reducing the propagation of the noise generated by the motor 4 and playing a role in reducing noise. The top wall 8 of the main body 6 has studs 17 extending downward. The motor inner cover 15 is hoisted on the top wall 8 of the main body 6 by the cooperation of the screws and the studs 17 and the motor 4 is clamped with the top wall 8 of the main body 6. The lower end of the motor inner cover 15 is located above the lower end of the motor outer cover 16 and a motor cover sealing ring 18 is interferingly abutted between the lower end of the motor inner cover 15 and the lower end of the motor outer cover 16. The upper end of the motor outer cover 16 is fixedly connected to the top wall 8 of the main body 6, so that the motor outer cover 16, the motor inner cover 15 and the top wall 8 of the main body 6 form an air outlet channel 19. The motor inner cover 15 encloses a heat dissipation cavity 20. A gap exists between the upper end of the motor inner cover 15 and the inner side of the top wall 8 of the main body 6, connecting the heat dissipation cavity 20 with the air outlet duct 19. In this case, the air outlet duct 19 is located outside the side wall of the motor 4 and surrounds it. Existing food processors place the air outlet duct 19 below the motor 4. In this case, the height of the base 1 is at least the sum of the heights of the motor 4 and the air outlet duct 19. When the air outlet duct 19 surrounds the side wall of the motor 4, the base 1 can be at its lowest height, whichever is greater. This reduces the height of the base 1, and in turn, the height of the blender jar 2, minimizing movement of the base 1 and blender jar 2 during processing and thus reducing noise. The motor 4 is the primary source of noise in the food processor. Noise generated by the motor 4 is blocked upward by the blender jar 2 and downward by the work surface. Therefore, noise generated by the motor 4 primarily propagates outward from the surrounding area of ​​the motor 4. In existing food processing machines, the air outlet duct 19 is located below the motor 4, and the air outlet duct 19 cannot block the propagation of the noise generated by the motor 4 around the motor 4. When the air outlet duct 19 surrounds the side wall of the motor 4, the noise generated by the motor 4 will be blocked by the air outlet duct 19 when it propagates outward from all sides of the motor 4, thereby reducing the propagation of the noise generated by the motor 4 and playing a role in reducing noise. At the same time, the lowered height of the base 1 and the mixing cup 2 also makes it easier for people to take, place and operate, thereby improving the user experience. The motor cover 16 is provided with a connecting port 21 aligned with the air outlet 14, so that the air outlet duct 19 is connected to the air outlet 14. A fan 22 is provided at the connecting port 21 to drive air out of the housing 3 from the air outlet 14.

[0049] Reference Figure 2The motor inner cover 15, the motor outer cover 16, the main body 6, and the base 7 form an air inlet channel 23, so that the air inlet channel 23 surrounds the air outlet channel 19. If the air inlet channel 23 is located below the motor 4 and / or below the air outlet channel 19, the height of the base 1 is at least the sum of the heights of the motor 4 and the air inlet channel 23, or the sum of the heights of the air inlet channel 23 and the air outlet channel 19. If the air inlet channel 23 surrounds the air outlet channel 19, the air inlet channel 23, the motor 4, and the air outlet channel 19 are arranged in a horizontal manner. In this case, the minimum height of the base 1 can be the maximum height among the air inlet channel 23, the motor 4, and the air outlet channel 19. Therefore, the height of the base 1 can be reduced, thereby reducing the height of the blending cup 2, reducing the shaking of the base 1 and the blending cup 2 during processing, and thus reducing noise generation. The air inlet 13 is located on the base 7, so that the air inlet channel 23 and the air inlet 13 are connected. The heat dissipation cavity 20 includes a heat dissipation cavity inlet 37 for air to enter the heat dissipation cavity 20 and a heat dissipation cavity outlet 38 for air to leave the heat dissipation cavity 20. A flow hole 24 serving as the heat dissipation cavity inlet 37 is formed at the lower end of the motor inner cover 15, thereby connecting the air inlet channel 23 and the heat dissipation cavity 20. The horizontal distance between the air inlet 13 and the heat dissipation cavity inlet 37 is greater than the vertical distance. For existing food processing machines, the air flows from the air inlet 13 to the heat dissipation cavity inlet 37 in a longitudinal direction. The fact that the horizontal distance between the air inlet 13 and the heat dissipation cavity inlet 37 is greater than the vertical distance means that the air extends horizontally as a whole during the process of flowing from the air inlet 13 to the heat dissipation cavity inlet 37, thereby reducing the height of the air duct. Accordingly, the height of the machine base 1 can also be reduced, thereby reducing the height of the mixing cup 2, lowering the center of gravity of the machine base 1 and the mixing cup 2, reducing the shaking of the machine base 1 and the mixing cup 2 during processing, and thus reducing noise generation. The motor 4 includes a motor shaft 25, a rotor 26 surrounding the motor shaft 25, a stator 27 surrounding the rotor 26, and an upper cover 28 and a lower cover 29 located above and below the stator 27, respectively. A fan 22 is disposed between the upper cover 28 and the rotor 26 and is sleeved onto the motor shaft 25. The maximum height difference between the upper cover 28 and the lower cover 29 defines the height D of the motor 4. A gap exists between the lower cover 29 and the motor inner cover 15, and a gap exists between the upper cover 28 and the top wall 8 of the main body 6. Multiple heat dissipation channels 30 are formed between the stator 27 and the rotor 26. The upper and lower covers 28 and 29 are also provided with multiple communication holes 31 that communicate with the heat dissipation channels 30. The communication holes 31 of the upper cover 28 serve as heat dissipation chamber outlets 38. Horizontally, the multiple heat dissipation channels 30 surround the circulation hole 24, and the multiple communication holes 31 also surround the circulation hole 24. If the projection of the heat dissipation channel 30 in the horizontal plane is only located on one side of the heat dissipation cavity inlet 37 , the projection of the heat dissipation channel 30 in the horizontal plane has a portion close to the heat dissipation cavity inlet 37 and a portion far from the heat dissipation cavity inlet 37 .The portion of the heat dissipation channel 30 corresponding to the portion of the heat dissipation channel 30 near the heat dissipation chamber inlet 37 in the horizontal plane is relatively easy to enter, while the portion of the heat dissipation channel 30 corresponding to the portion near the heat dissipation chamber outlet 38 is relatively difficult to enter. This results in different air impacts on different portions of the heat dissipation channel 30, which in turn causes the motor 4 to shake under the air impact, increasing noise generation. Furthermore, the portion of the heat dissipation channel 30 corresponding to the portion of the heat dissipation channel 30 near the heat dissipation chamber inlet 37 in the horizontal plane has higher heat dissipation efficiency, while the portion of the heat dissipation channel 30 corresponding to the portion near the heat dissipation chamber outlet 38 has lower heat dissipation efficiency, resulting in uneven heat dissipation efficiency across the heat dissipation channel 30. If the heat dissipation channel 30's horizontal projection surrounds the heat dissipation chamber inlet 37, air can enter the heat dissipation channel 30 evenly from the heat dissipation chamber inlet 37. This not only ensures that all portions of the heat dissipation channel 30 are evenly impacted by air, reducing motor 4 shaking and noise generation, but also ensures uniform heat dissipation efficiency across all portions of the heat dissipation channel 30. The motor outer cover 16 and the motor inner cover 15 act as partitions, preventing direct communication between the air inlet channel 23 and the air outlet channel 19. The air inlet 13, the air inlet channel 23, the heat dissipation cavity 20, the air outlet channel 19 and the air outlet 14 constitute a complete air duct. When the air flows in the air inlet channel 23 and the air outlet channel 19, the air flows in the same direction as the length of the housing 3. Therefore, the air flow direction in the air inlet channel 23 and the air outlet channel 19 is the same. Compared with the longitudinal extension of the air inlet channel 23 of the existing food processor, the air inlet channel 23 is set to extend horizontally, so that the height of the air duct can be reduced. Accordingly, the height of the machine base 1 can also be reduced, thereby reducing the height of the mixing cup 2, lowering the center of gravity of the machine base 1 and the mixing cup 2, reducing the shaking of the machine base 1 and the mixing cup 2 during processing, and thus reducing noise generation. At the same time, the reduced height of the machine base 1 and the mixing cup 2 also makes it easier for people to take and operate, thereby improving the user experience.

[0050] Reference Figure 2, the angle between the line connecting the midpoint of the air inlet 13 and the motor shaft 25 of the motor 4 and the line connecting the midpoint of the air outlet 14 and the motor shaft 25 of the motor 4 is α, 90°≤α≤180°. Preferably, α=135°. After the air enters the casing 3 from the air inlet 13, it flows through the motor 4 and is discharged from the air outlet 14. 90°≤α≤180°, so that the overall flow direction of the air from the air inlet 13 to the motor 4 and from the motor 4 to the air outlet 14 is the same. Compared with the situation where the overall flow directions of the air from the air inlet 13 to the motor 4 and from the motor 4 to the air outlet 14 are opposite, when the overall flow directions of the air from the air inlet 13 to the motor 4 and from the motor 4 to the air outlet 14 are the same, the floor space of the machine base 1 is increased, the stability of the machine base 1 is also higher, thereby reducing the shaking of the machine base 1 during processing, thereby reducing noise generation. The distance between the horizontal projection of the midpoint of the air inlet 13 and the horizontal projection of the motor shaft 25 of the motor 4 is X1, the distance between the horizontal projection of the midpoint of the air outlet 14 and the horizontal projection of the motor shaft 25 of the motor 4 is X2, and the sum of X1 and X2 is X. The height difference between the highest and lowest points of the air duct, i.e., the height of the air duct, is Z. Here, 0.1 ≤ Z / X ≤ 0.4. In this embodiment, the lowest point of the air duct is located between the base 7 and the motor inner cover 15, and the highest point of the air duct is located between the upper cover 28 and the top wall 8 of the main body 6. The height of the air duct Z = 78 mm, while X = 200 mm, and Z / X = 0.39. In existing food processors, the rear side of the heat dissipation chamber 20 is close to the air outlet 14, the left and right sides of the heat dissipation chamber 20 are close to the air inlet 13, and the front side of the heat dissipation chamber 20 is far away from the air inlet 13 and the air outlet 14. Therefore, in the shortest path of air flowing from the air inlet 13 to the air outlet 14, the air easily flows through the left, right, and rear sides of the heat dissipation cavity 20, but has difficulty flowing through the front side of the heat dissipation cavity 20. Therefore, the heat dissipation efficiency of the left, right, and rear sides of the heat dissipation cavity 20 is higher than the heat dissipation efficiency of the front side of the heat dissipation cavity 20, resulting in difficulty in uniform heat dissipation of the motor 4. In order to improve the uniformity of heat dissipation of the motor 4, the height of the motor 4 cover is relatively high. At this time, the height of the air inlet channel 23 is relatively high, which prolongs the residence time of the air inlet channel 23, thereby increasing the uniform distribution of the air in the air inlet channel 23, allowing the air to flow through the front side of the heat dissipation cavity 20, and improving the uniformity of heat dissipation of the motor 4. However, the height of the air inlet channel 23 is relatively high, which makes the height of the air duct higher, and the height of the machine base 1 is naturally higher, which in turn raises the height of the mixing cup 2, causing the center of gravity of the machine base 1 and the mixing cup 2 to increase, causing the machine base 1 and the mixing cup 2 to shake easily during processing, increasing noise generation. In the present application, Z<X, which means that the proportion of horizontal movement distance of air in the air duct is higher than the proportion of vertical movement distance. Therefore, after reducing the vertical movement distance, the horizontal movement distance can be increased to compensate for the need for uniform air distribution, thereby improving the uniformity of heat dissipation of the motor 4.The reduced vertical distance of air travel in the duct, meaning the duct height, reduces the height of the machine base 1. Consequently, the height of the blender jar 2 is also reduced, lowering the center of gravity of the machine base 1 and blender jar 2. This reduces any shaking during processing, thereby reducing noise generation. The height of the machine base 1 is limited by the height of the duct, and the maximum horizontal distance of the machine base 1 is limited by the maximum horizontal distance of air travel in the duct. If the maximum horizontal distance of air travel in the duct is greater than the duct height, this means the maximum horizontal distance of the machine base 1 can be greater than the duct height, resulting in a flatter overall appearance. This lowered height and center of gravity increase the machine base 1's footprint, increasing its stability and reducing any shaking during processing, thereby reducing noise generation. Furthermore, the lowered height of the machine base 1 and blender jar 2 also makes it easier to access and operate, improving the user experience. A value of Z / X < 0.1 indicates that Z is too small. Air generally flows through the motor 4 along its axis. Therefore, a too small Z indicates that air flows through a smaller area of ​​the motor 4, impairing heat dissipation. If Z / X > 0.4, Z is too large, making it difficult to lower the base 1 due to the height of the air duct. This hinders lowering the base 1's height, and consequently, the height of the blender 2. This also hinders reducing the shaking of the base 1 and blender 2 during processing, which in turn hinders noise generation. Therefore, 0.1 ≤ Z / X ≤ 0.4 allows air to flow through the motor 4 as much as possible, enhancing heat dissipation, while also lowering the base 1's height and reducing noise generation. The air duct height Z and the housing 3 height H1 satisfy 0.4 ≤ Z / H1 < 1, preferably, Z / H1 = 0.975. If Z / H1 < 0.4, H1 is too large. If Z / H1 < 0.4, Z is too small. Air generally flows through the motor 4 axially, so a small Z means that less air flows through the motor 4, hindering heat dissipation. Therefore, 0.4 ≤ Z / H1 < 1 maximizes air flow through the motor 4, enhancing heat dissipation. The air outlet channel 19 is located within the height range of the motor 4. The height of the base 1 can be as low as the height of the motor 4, so that the height of the base 1 is not affected by the air outlet channel 19. Therefore, the height of the base 1 is reduced, thereby reducing the height of the mixing cup 2, reducing the shaking of the base 1 and the mixing cup 2 during processing, and thus reducing noise generation. The height of the longitudinal overlapping part of the air outlet channel 19 and the motor 4 is h and the height D of the motor 4 satisfies h / D=0.1-1:1. Preferably, h / D=0.9. At this time, the air outlet channel 19 is located within the height range of the motor 4, so the height of the longitudinal overlapping part of the air outlet channel 19 and the motor 4 is the height of the air outlet channel 19. If h / D is less than 0.1, the height of the longitudinal overlapping part of the air outlet channel 19 and the motor 4 is too small, that is, the height of the air outlet channel 19 is too small, resulting in a large flow resistance of air in the air outlet channel 19, and the power of the fan 22 needs to be increased, which is not conducive to reducing noise.Therefore, h / D=0.1-1:1, which not only avoids excessive air flow resistance in the air outlet channel 19, but also can reduce the height of the machine base 1, and then reduce the height of the mixing cup 2, reduce the shaking of the machine base 1 and the mixing cup 2 during processing, and thus reduce noise generation. The height Z of the air duct and the height D of the motor 4 satisfy 0.6≤D / Z≤2.5. Preferably, D / Z=0.641. For the height D of the motor 4, the motor shaft 25 is not considered to be measured as part of the motor 4. If the fan 22 is sleeved with the motor shaft 25 and rotates under the drive of the motor shaft 25, the fan 22 is measured as a part of the motor 4. If the fan 22 is sleeved with the motor shaft 25 and rotates under the drive of the motor shaft 25, the fan 22 is measured as a part of the motor 4. D / Z>2.5, then D is too large. If the air duct height is low, but the motor 4 is still high, the base 1 and the blending cup 2 will also be high, resulting in a high center of gravity for the base 1 and blending cup 2. During processing, the base 1 and blending cup 2 will still shake significantly, causing more noise. If D / Z < 0.6, D is too small, and the corresponding motor 4 torque is low, thus failing to achieve a good crushing effect. 0.6 ≤ D / Z ≤ 2.5 can both reduce the height of the base 1 and blending cup 2 while keeping the air duct height low, reduce the shaking of the base 1 and blending cup 2 during processing, and reduce noise, while also meeting the torque requirements for motor 4.

[0051] Reference Figure 2 , the control component 5 is located in the air inlet channel 23, and plays the role of controlling the operation of the control motor 4. The control component 5 includes a power board 32 and a control board 33 located above the power board 32. The power board 32 and the control board 33 are horizontally arranged and located above the air inlet 13. If the power board 32 and the control board 33 are arranged vertically, the height of the base 1 will be limited by the height of the control component 5 and cannot be lowered, which is not conducive to lowering the height of the blending cup 2. If the control component 5 is placed horizontally, the control component 5 will not limit the height of the base 1, so that the base 1 can reduce its height after the air duct height is lowered, thereby lowering the height of the blending cup 2, reducing the shaking of the base 1 and the blending cup 2 during processing, and thus reducing noise generation.

[0052] Reference Figure 4 It is understood that the air inlet 13 may not be located at the end of the base 7 near the front sidewall 9, but instead directly below the motor inner cover 15 and the motor outer cover 16. In this case, the air inlet 13 and the air outlet 14 are still located on either side of the interface that vertically passes through the center of gravity of the motor 4. The motor 4 is still located within the circle formed by the shortest connecting line of the projections of the air inlet 13 and the air outlet 14 onto a plane perpendicular to the motor shaft 25.

[0053] It will be appreciated that when the control assembly 5 is no longer located within the housing 3, the overall size of the housing 3 approaches that of the motor 4. The height of the housing 3 is H1, and the projected area of ​​the housing 3 on a horizontal plane is S. Preferably, H1 / S = 0.08 cm / cm². When the blender jar 2 is mounted on the base 1, the total height of the base 1 and blender jar 2 is H2. Preferably, H2 / S = 0.3 cm / cm².

[0054] Example 2

[0055] The difference between Example 2 and Example 1 is that the distribution of the air outlet channel 19 and the motor 4 is different.

[0056] Reference Figure 5 In Example 2, the motor inner cover 15 and the motor outer cover 16 are eliminated, and the motor 4 is hoisted on the top wall 8 of the main body 6 by using screws and screw posts on the top wall 8 of the main body 6. An air inlet baffle 34 and an air outlet baffle 35 are respectively provided on two opposite sides of the motor 4. The upper end of the air inlet baffle 34 is in sealed contact with the motor 4, and the lower end extends downward to be in sealed contact with the base 7. The two sides are respectively in sealed contact with the left side wall 11 and the right side wall 12 of the main body 6. The lower end of the air outlet baffle 35 is in sealed contact with the motor 4, and the upper end extends upward to be in sealed contact with the top wall 8 of the main body 6. The two sides are respectively in sealed contact with the left side wall 11 and the right side wall 12 of the main body 6. The sides of the motor 4 that are not in contact with the air inlet baffle 34 and the air outlet baffle 35 are all in sealed contact with the main body 6.

[0057] At this point, the air inlet baffle 34 and the air outlet baffle 35, on one side, together with the main body 6 and base 7, form an air inlet channel 23, and on the other side, together with the main body 6 and base 7, form an air outlet channel 19. A heat dissipation chamber 20 is formed within the motor 4. The air inlet channel 23 and the air outlet channel 19 are located on either side of the motor 4. The connecting hole 31 of the lower cover 29 serves as the heat dissipation chamber inlet 37, and the connecting hole 31 of the upper cover 28 serves as the heat dissipation chamber outlet 38. If the air inlet channel 23 is located below the motor 4 and / or below the air outlet channel 19, the height of the machine base 1 is at least the sum of the heights of the motor 4 and the air inlet channel 23, or the sum of the heights of the air inlet channel 23 and the air outlet channel 19. If the air inlet channel 23 and the air outlet channel 19 are located on either side of the motor 4, the air inlet channel 23, the motor 4, and the air outlet channel 19 are arranged in a horizontal arrangement. In this case, the minimum height of the machine base 1 can be the maximum among the air inlet channel 23, the motor 4, and the air outlet channel 19. Therefore, the height of the machine base 1 can be lowered, and thus the height of the blending cup 2 can be lowered, thereby reducing the shaking of the machine base 1 and the blending cup 2 during the processing, thereby reducing the noise generation.

[0058] Example 3

[0059] The difference between Example 3 and Example 1 is that the distribution of the heat dissipation cavity inlet 37 and the heat dissipation cavity outlet 38 relative to the motor 4 is different.

[0060] Reference Figure 6 In Example 3, the motor inner cover 15 and the motor outer cover 16 are eliminated, and the motor 4 is hoisted to the top wall 8 of the main body 6 using screws in conjunction with screw posts on the top wall 8 of the main body 6. An air inlet baffle 34 and an air outlet baffle 35 are provided on opposite sides of the motor 4, respectively. The air inlet baffle 34 is in sealed contact with the housing 3 on all sides, and the air outlet baffle 35 is in sealed contact with the housing 3 on all sides. The air inlet baffle 34 is provided with flow holes 24 aligned with the side of the motor 4, and the air outlet baffle 35 is provided with flow holes 24 aligned with the side. The area of ​​the flow holes 24 in the air inlet baffle 34 and the air outlet baffle 35 is no larger than the area of ​​the side of the motor 4.

[0061] At this point, the air inlet baffle 34, the air outlet baffle 35, and the housing 3 form a heat dissipation chamber 20. The side of the air inlet baffle 34 facing away from the motor 4 and the housing 3 form an air inlet channel 23, and the side of the air outlet baffle 35 facing away from the motor 4 and the housing 3 form an air outlet channel 19. The flow holes 24 of the air inlet baffle 34 form a heat dissipation chamber inlet 37, and the flow holes 24 of the air outlet baffle 35 form a heat dissipation chamber outlet 38. At this point, the heat dissipation chamber inlet 37 and the heat dissipation chamber outlet 38 are located on either side of the motor 4, and the horizontal distance between the heat dissipation chamber inlet 37 and the heat dissipation chamber outlet 38 is greater than the vertical distance. Under the action of the fan 22 located at the air outlet 14, air flows through the air inlet 13, the air inlet channel 23, the heat dissipation chamber 20, the air outlet channel 19, and the air outlet 14 in sequence.

[0062] Example 4

[0063] The difference between Example 4 and Example 1 lies in the different structures of the motor 4, the position of the fan 22, and the distribution of the air inlet channel 23 and the air outlet channel 19.

[0064] Reference Figure 7In Example 4, the motor 4 includes a motor shaft 25, a rotor 26 wrapping around the motor shaft 25, a stator 27 wrapping around the rotor 26, and an upper cover 28 and a lower cover 29 located above and below the stator 27, respectively. An axial hole 36 is provided at the center of the upper cover 28, through which the upper end of the motor shaft 25 extends. The upper cover 28 covers the upper ends of the stator 27 and the rotor 26, while the lower cover 29 covers the lower ends of the stator 27 and the rotor 26. A fan 22 located above the lower cover 29 is fixedly mounted on the lower end of the motor shaft 25. A heat dissipation chamber 20 is provided inside the motor 4, and the heat dissipation chamber 20 passes between the stator 27 and the rotor 26. A heat dissipation chamber inlet 37 is formed between the upper cover 28 and the stator 27, and a heat dissipation chamber outlet 38 is formed between the lower cover 29 and the stator 27. The gap between the stator 27 and the upper cover plate 28 and the lower cover plate 29 is used to form a heat dissipation cavity inlet 37 and a heat dissipation cavity outlet 38, thereby increasing the contact area between the air and the stator 27 and enhancing the heat dissipation effect. The heat dissipation cavity inlet 37 and the heat dissipation cavity outlet 38 are located between the upper cover plate 28 and the lower cover plate 29 of the motor 4, so that there is no need to set a gap for air flow between the upper cover plate 28 and the housing 3 and between the lower cover plate 29 and the housing 3. Under the premise of ensuring air heat dissipation, the distance between the motor 4 and the outside world is reduced, the heat transfer between the motor 4 and the outside world is improved, and the heat dissipation effect is enhanced. At the same time, the height of the base 1 is reduced, and the height of the mixing cup 2 is also reduced, so that the center of gravity of the base 1 and the mixing cup 2 is lower and the stability is higher. If the heat dissipation cavity outlet 38 is located on the top wall 8 or the bottom wall of the motor 4, and the air outlet channel 19 is connected to the heat dissipation cavity outlet 38, it is inevitable that part of the air outlet channel 19 is located above or below the motor 4, so that the height of the machine base 1 can only reach the sum of the heights of the part of the air outlet channel 19 located above or below the motor 4 and the motor 4, which is not conducive to lowering the height of the machine base 1, and further not conducive to lowering the height of the mixing cup 2, and not conducive to reducing the shaking of the machine base 1 and the mixing cup 2 during processing, and thus not conducive to reducing noise generation. In addition, the lowering of the height of the machine base 1 and the mixing cup 2 also makes it easier for people to take and operate, thereby improving the user experience. At this time, the heat dissipation cavity inlet 37 and the heat dissipation cavity outlet 38 form a longitudinal misalignment. If the heat dissipation cavity inlet 37 and the heat dissipation cavity outlet 38 are in a longitudinal alignment state, it is assumed that the heat dissipation cavity inlet 37 and the heat dissipation cavity outlet 38 are both located between the stator 27 and the upper cover plate 28. If no partition is provided between the heat dissipation chamber inlet 37 and the heat dissipation chamber outlet 38, the two chambers are directly connected, resulting in less air entering the heat dissipation channel 30 and, naturally, insufficient heat dissipation from the windings within the motor 4. If a partition is provided between the heat dissipation chamber inlet 37 and the heat dissipation chamber outlet 38 to prevent direct connection between the two chambers, air can pass through the heat dissipation channel 30 to dissipate heat from the windings within the motor 4. However, in this case, only a portion of the space between the stator 27 and the upper cover 28 is used for air intake, while the remaining space is used for air exhaust, resulting in poor heat dissipation.The heat dissipation cavity inlet 37 and the heat dissipation cavity outlet 38 are longitudinally staggered, so that air can fully enter the heat dissipation channel 30 to dissipate heat to the winding inside the motor 4, and can fully utilize the air inlet space and the air outlet space to enhance the heat dissipation effect.

[0065] The height of the housing 3 is H1, H1≤100mm, preferably H1=50mm. The projected area S of the housing 3 on the horizontal plane, 0.005≤H1 / S≤0.08, unit is cm / cm2. Preferably, H1 / S=0.007cm / cm2. When the blending cup 2 is installed on the base 1, the total height of the base 1 and the blending cup 2 is H2, 0.03≤H2 / S≤0.35, unit is cm / cm2. Preferably, H2 / S=0.041cm / cm2. The maximum height difference between the heat dissipation cavity inlet 37 and the heat dissipation cavity outlet 38 is d, 0.2≤d / H1<1. Preferably, d / H1=0.4. The height of the air duct is Z, 0.5≤d / Z≤1. Preferably, d / Z=0.6. The maximum height difference between the upper cover 28 and the lower cover 29, that is, the height of the motor 4, is D, 0.4≤d / D<1. Preferably, d / D = 0.6. The height h of the longitudinal overlap between the air outlet duct 19 and the motor 4 and the height D of the motor 4 satisfy h / D = 0.1-1:1. Preferably, h / D = 0.3. The stator 27 is wrapped with a positioning plate 39. The lower cover 29 is fixedly connected to the positioning plate 39, and the upper cover 28 is fixedly connected to the positioning plate 39. The outer diameter of the positioning plate 39 is larger than the outer diameter of the lower cover 29.

[0066] Reference Figure 7 and 8 , the top wall 8 of the main body 6 is provided with an upper mounting hole 40, and the upper cover plate 28 is sealed against the top wall 8 of the main body 6 at the edge of the mounting hole. At this time, the upper cover plate 28 is exposed to the casing 3 and is in direct contact with the outside world. Compared with the upper cover plate 28 and the lower cover plate 29 being located inside the casing 3, the upper cover plate 28 is exposed to the casing 3, and the upper cover plate 28 exposed to the casing 3 can also become a heat dissipation path for the motor 4, thereby accelerating the heat dissipation of the motor 4 and enhancing the heat dissipation effect. Preferably, a step is formed on the edge of the upper cover plate 28, and the top wall 8 of the main body 6 at the edge of the mounting hole is just stuck at the step of the upper cover plate 28, so that the upper surface of the upper cover plate 28 and the upper surface of the top wall 8 of the main body 6 form a flat surface.

[0067] Reference Figure 7 、 89, the base 7 includes a placement portion 41 that contacts the desktop and a protruding portion 42 that protrudes upward. The placement portion 41 surrounds the front, left, and right sides of the protruding portion 42. A through hole 43 is formed at the upper end of the protruding portion 42. The portion of the motor 4 located below the positioning plate 39 passes through the through hole 43 so that the positioning plate 39 and the protruding portion 42 are in sealed contact. The side of the protruding portion 42 away from the placement portion 41 is provided with a flange extending downward and provided with an air outlet 14. The side of the flange away from the protruding portion 42 is integrally connected to a support plate 44 that is in sealed contact with the bottom of the lower cover plate 29. A lower mounting hole 45 is provided in the center of the support plate 44. Preferably, a step is formed on the edge of the lower cover plate 29, and the edge of the support plate 44 located at the lower mounting hole 45 is exactly stuck at the step of the lower cover plate 29, thereby exposing the lower cover plate 29 to the housing 3, and the lower surface of the lower cover plate 29 and the lower surface of the support plate 44 form a flat surface. Compared to the upper cover plate 28 and the lower cover plate 29 being located inside the casing 3, the lower cover plate 29 is exposed to the casing 3. The lower cover plate 29 exposed to the casing 3 can also serve as a heat dissipation path for the motor 4, thereby accelerating the heat dissipation of the motor 4 and enhancing the heat dissipation effect. The main body 6 and the base 7 form an air inlet channel 23. The portion of the motor 4 located above the positioning plate 39 is located between the top wall 8 of the main body 6 and the protrusion 42. Therefore, the heat dissipation cavity inlet 37 is connected to the air inlet channel 23. The portion between the flange and the heat dissipation cavity outlet 38 forms an air outlet channel 19. The portion of the motor 4 located below the positioning plate 39 is located inside the air outlet channel 19. Therefore, the heat dissipation cavity outlet 38 is connected to the air outlet channel 19. The positioning plate 39 is in sealing contact with the protrusion 42, so that the positioning plate 39 and the protrusion 42 form a partition that separates the air inlet channel 23 from the air outlet channel 19.

[0068] Because the front, left, and right sides of the protrusion 42 are all surrounded by the placement portion 41, the exhaust resistance of the front, left, and right heat dissipation cavity outlets 38 is relatively high. The rear heat dissipation cavity outlet 38, however, is not restricted by the placement portion 41, making the rear heat dissipation cavity outlet 38 dominant. Therefore, the front, left, and right heat dissipation cavity outlets 38 can be eliminated, leaving only the rear heat dissipation cavity outlet 38. When the front, left, and right heat dissipation cavity outlets 38 are eliminated, the flanges and support plates 44 can also be eliminated. Instead, multiple retaining ribs are formed between the rear side of the lower cover plate 29 and the rear side of the stator 27. The rear heat dissipation cavity outlet 38 is formed between two adjacent retaining ribs. In this case, the rear heat dissipation cavity outlet 38 is completely exposed. The placement portion 41, the protrusion 42, and the work surface define the air outlet duct 19. The mouth of the air outlet duct 19 forms the air outlet 14, and the rear heat dissipation cavity outlet 38 is located exactly at the air outlet 14. If the heat dissipation cavity outlet 38 is located inside the casing 3, the air needs to flow from the air inlet 13 of the casing 3 to the heat dissipation cavity inlet 37, and then flow from the heat dissipation cavity outlet 38 to the air outlet 14 of the casing 3. During the flow of air, the air will continuously transfer heat. When the air flows from the heat dissipation cavity outlet 38 to the air outlet 14 of the casing 3, the heat of the air is relatively high, and heat transfer will occur inside the casing 3, causing part of the heat to remain inside the casing 3 instead of being discharged from the casing 3 with the air, resulting in poor heat dissipation effect. At the same time, the air needs to flow from the heat dissipation cavity outlet 38 to the air outlet 14 of the casing 3, which extends the flow path of the air inside the casing 3, resulting in the loss of kinetic energy of the air. At this time, it is necessary to provide the air with more energy to overcome the increased kinetic energy loss caused by the extension of the air flow path. Providing more energy to the air will also generate more heat, reducing the heat dissipation effect. The heat dissipation cavity outlet 38 is exposed to the housing 3, so that the heat can be carried out of the housing 3 by the air as much as possible, reducing the heat remaining inside the housing 3. At the same time, the air flow path is shortened, thereby reducing the demand for air kinetic energy, which can not only enhance the heat dissipation effect, but also reduce energy consumption. If the air outlet 19 of the food processor is located inside the housing 3, the air will continuously transfer heat during the flow of air. When the air enters the air outlet 19, the heat content of the air is relatively high, and heat transfer will occur inside the housing 3, causing some heat to remain inside the housing 3 instead of being discharged from the housing 3 with the air, resulting in poor heat dissipation effect. At the same time, the air flow path in the housing 3 is extended, resulting in the loss of the air's kinetic energy. At this time, it is necessary to provide the air with more energy to overcome the increased kinetic energy loss caused by the extension of the air flow path. Providing more energy to the air will also generate more heat, reducing the heat dissipation effect.The air outlet duct 19 is located outside the casing 3, so that the heat can be carried out of the casing 3 by the air as much as possible, reducing the heat remaining inside the casing 3, and at the same time shortening the air flow path, thereby reducing the demand for air kinetic energy, which can not only enhance the heat dissipation effect, but also reduce energy consumption. In addition, it can also reduce the parts required to construct the air outlet duct 19 inside the casing 3, thereby reducing production costs.

[0069] Reference Figure 8 and 9 The two air inlets 13 are located on the left and right sides of the placement portion 41, with one half of each air inlet 13 located on the left and right sides of the placement portion 41 surrounding the protruding portion 42. While the air inlet duct 23 is connected to the air inlet 13, the air inlet 13 and the rear heat dissipation cavity outlet 38 are still located on either side of the interface passing through the center of gravity of the motor 4. The motor 4 is located within the circle formed by the shortest connecting line of the projections of the air inlet 13 and the air outlet 14 onto a plane perpendicular to the motor shaft 25.

[0070] At this time, the air inlet 13, the air inlet channel 23, the heat dissipation cavity 20, the air outlet channel 19, and the air outlet 14 form a complete air duct.

[0071] It is understandable that a heat dissipation cavity outlet 38 may be formed between the upper cover plate 28 and the stator 27 , and a heat dissipation cavity inlet 37 may be formed between the lower cover plate 29 and the stator 27 .

[0072] It is understandable that the top wall 8 of the main body 6 may not be provided with the upper mounting hole 40, but may directly abut against the upper cover 28. Compared to the upper cover 28 being located inside the housing 3 with a gap between the upper cover 28 and the housing 3, the upper cover 28 abutting against the housing 3 can also serve as a heat dissipation path for the motor 4, thereby accelerating the heat dissipation of the motor 4.

[0073] Reference Figure 10 , it can be understood that the air inlet 13 can also be located at one end of the placement portion 41 near the front side wall 9. At this time, X=200mm, the lowest point of the air duct is the heat dissipation cavity outlet 38, and the highest point of the air duct is the heat dissipation cavity inlet 37. The height difference between the highest point and the lowest point of the air duct is Z. At this time, Z=48mm. At this time, Z<X and Z / X=0.24. Z and D satisfy 0.6≤D / Z≤2.5. Preferably, D / Z=1.04. The height H1 and Z of the casing 3 satisfy 0.4≤Z / H1<1. Preferably, Z / H1=0.96. The angle between the line connecting the midpoint of the air inlet 13 and the motor shaft 25 of the motor 4 and the line connecting the midpoint of the air outlet 14 and the motor shaft 25 of the motor 4 is α, 90°≤α≤180°. Preferably, α=135°.

[0074] Reference Figure 11It can be understood that the flange and the support plate 44 can also be eliminated, and instead a plurality of retaining ribs can be formed between the lower cover plate 29 and the stator 27. A heat dissipation cavity outlet 38 is formed between two adjacent retaining ribs. At the same time, the protrusion 42 can be extended forward to penetrate the placement portion 41, so that the placement portion 41 is only surrounded by the left and right sides of the protrusion 42. At this time, the heat dissipation cavity outlet 38 is completely exposed, and the air inlet channel 23 is located above the air outlet channel 19. At this time, when the food processor is placed on the work surface, the placement portion 41, the protrusion 42 and the work surface form the air outlet channel 19, and the two end portions of the air outlet channel 19 form the air outlet 14. The motor 4 is located below the positioning plate 39 and is partially located in the air outlet channel 19, so the heat dissipation cavity outlet 38 is connected to the air outlet channel 19.

[0075] Example 5

[0076] The difference between Example 5 and Example 4 is that the distribution of the air inlet 13 and the air outlet 14 relative to the motor 4 is different.

[0077] Reference Figure 12 In Example 5, the air inlet 13 on the left side of the placement portion 41 extends rearward to align with the left heat dissipation cavity outlet 38, while the air inlet 13 on the right side of the placement portion 41 extends rearward to align with the right heat dissipation cavity outlet 38. Furthermore, an air inlet 13 is also provided on the front portion of the placement portion 41 near the protrusion 42. This air inlet 13 joins the air inlets 13 on the left and right sides of the placement portion 41, thereby enclosing the left, right, and front sides of the protrusion 42. Projected onto the same horizontal plane, the air inlet 13 surrounds three-quarters of the circumference of the motor 4, while the air outlet 14 surrounds one-quarter of the motor 4. Compared to a scenario where the air inlet 13 and air outlet 14 are located on one side of the motor 4, encircling the motor 4 with the air inlet 13 and air outlet 14 increases the coverage of the motor 4 by the air inlet 13 and air outlet 14, thereby increasing the uniformity of air intake and outlet, and thus improving the uniformity of heat dissipation from the motor 4.

[0078] Example 6

[0079] The difference between Example 6 and Example 4 is that the relative positions of the heat dissipation cavity inlet 37 and the heat dissipation cavity outlet 38 are different.

[0080] Reference Figure 13 In Example 6, a heat dissipation chamber inlet 37 and a heat dissipation chamber outlet 38 are formed between the upper cover plate 28 and the stator 27, on opposite sides of the motor 4. Alternatively, a heat dissipation chamber inlet 37 and a heat dissipation chamber outlet 38 are formed between the lower cover plate 29 and the stator 27, on opposite sides of the motor 4. In this case, the heat dissipation chamber inlet 37 and the heat dissipation chamber outlet 38 are longitudinally aligned.

[0081] Example 7

[0082] The difference between Example 7 and Example 4 is that the structure of the air outlet channel 19 is different.

[0083] Reference Figure 14 and 15 In Example 7, the base 7 includes a placement portion 41 in contact with the desktop and a protrusion 42 protruding upward. The placement portion 41 surrounds the front, left and right sides of the protrusion 42. A through hole 43 is formed at the upper end of the protrusion 42. The motor 4 is located below the positioning plate 39 and passes through the through hole 43 to seal the positioning plate 39 against the protrusion 42. A downwardly extending hollow flange is provided on the side of the protrusion 42 away from the placement portion 41. The side of the flange away from the protrusion 42 is integrally connected to a support plate 44 that abuts against the bottom of the lower cover 29. At the same time, the base 7 is also provided with a bottom cover 46 in contact with the desktop, the bottom cover 46 is located below the protrusion 42 to cover the protrusion 42, and the air outlet 14 is provided on the rear side of the bottom cover 46. A lower mounting hole 45 is provided at the center of the bottom cover 46. Preferably, a step is formed at the edge of the support plate 44, and the edge of the bottom cover 46 located at the lower mounting hole 45 is just stuck at the step of the support plate 44, so that the support plate 44 is exposed to the bottom cover 46. The lower surface of the support plate 44 and the lower surface of the bottom cover 46 form a flat surface.

[0084] The protrusion 42 is provided with a windshield 47 that extends toward the bottom cover 46 and surrounds the motor 4. The windshield 47 is generally spiral-shaped, and the lower end surface of the windshield 47 is provided with a side mounting groove 48. The side mounting groove 48 is provided with a side sound-absorbing cotton 49 used as a noise reduction component. The upper end surface of the bottom cover 46 is provided with a bottom mounting groove 50. The bottom mounting groove 50 is provided with a bottom sound-absorbing cotton 51. The side sound-absorbing cotton 49 and the bottom sound-absorbing cotton 51 are in interference fit, so that the windshield 47, the protrusion 42, and the bottom cover 46 together form an air outlet channel 19 that spirally surrounds the motor 4. The protrusion 42 forms a partition that separates the air inlet channel 23 from the air outlet channel 19. The characteristic of the spiral-shaped air outlet channel 19 is that the air outlet channel 19 gradually expands along the direction of air flow. At this time, the air will continuously emit and interfere with each other during its flow in the air outlet channel 19, thereby reducing noise. Compared with directly passing through the windshield 47, the noise generated by the motor 4 will cause greater loss when passing through the sound-absorbing cotton, which is beneficial to reducing noise.

[0085] It is understandable that the flange and the support plate 44 may be omitted, and in this case the bottom cover 46 directly contacts the lower cover plate 29 of the motor 4 .

[0086] in Figure 1-15 The arrows in the diagram indicate the direction of air flow.

[0087] This embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A flat food processor, comprising a base and a blending cup mounted on the base, wherein the base comprises a housing, a motor, and an air duct passing through the motor, and wherein: Along the air flow direction, the air duct includes an air inlet channel located upstream of the motor, an air outlet channel located downstream of the motor, and a heat dissipation cavity located between the air inlet channel and the air outlet channel. The air duct includes an air inlet and an air outlet. The air inlet and the air outlet are located on both sides of the motor. The height of the air duct is Z. The distance between the horizontal projection of the air inlet and the horizontal projection of the motor shaft of the motor is X1. The distance between the horizontal projection of the air outlet and the horizontal projection of the motor shaft of the motor is X2. The sum of X1 and X2 is X, and Z<X.

2. A flat food processing machine according to claim 1, characterized in that: The motor is wrapped with a motor inner cover, a heat dissipation cavity is formed inside the motor inner cover, and an air outlet channel is formed outside the motor inner cover.

3. A flat food processing machine according to claim 2, characterized in that: The motor inner cover is surrounded by a motor outer cover, and an air outlet channel is formed between the motor inner cover and the motor outer cover.

4. The flat food processing machine according to claim 1, characterized in that: A heat dissipation cavity is formed inside the motor, and the heat dissipation cavity is provided with a heat dissipation cavity outlet for air to leave the heat dissipation cavity. The heat dissipation cavity outlet is located on the side wall of the motor, and the air outlet channel is connected to the heat dissipation cavity outlet.

5. The flat food processing machine according to claim 1, characterized in that: The air outlet channel spirally surrounds the motor.

6. The flat food processing machine according to claim 1, characterized in that: The casing includes a main body, a base located below the main body, and a partition located between the main body and the base. The partition separates the air inlet channel and the air outlet channel. A spiral wind shield is provided outside the heat dissipation cavity. One end of the wind shield abuts the partition, and the other end abuts the base or the main body so that the wind shield and the casing form an air outlet channel that spirally surrounds the motor.

7. The flat food processing machine according to claim 1, characterized in that: The air outlet channel is located within the height range of the motor.

8. The flat food processing machine according to claim 7, characterized in that: The height of the longitudinal overlapping portion of the air outlet channel and the motor is h, the height of the motor is D, and h / D=0.1-1:

1.

9. The flat food processing machine according to claim 1, characterized in that: The air inlet channel surrounds the air outlet channel; or the air inlet channel and the air outlet channel are located on both sides of the motor; or the air inlet channel is located above the air outlet channel.

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