Food processor base with simple heat dissipation structure

Abstract

The utility model discloses a food processor base with a simple heat dissipation structure, which comprises a casing, a driving motor and an electric control element, the driving motor and the electric control element are arranged in an inner cavity of the casing, the electric control element comprises a circuit board, the bottom wall of the casing below the driving motor extends upwards to form a sleeve, and an air outlet of the base is arranged on the inner side of the sleeve. A cooling fan is arranged below the driving motor, the bottom of the driving motor abuts against the top of the sleeve to seal an opening of the sleeve, the cooling fan is located in the sleeve to form an air outlet cavity, and the driving motor is further provided with a motor air inlet communicated with the air outlet cavity; the circuit board is provided with a radiator corresponding to a high-temperature area on the circuit board and is obliquely arranged, so that radiating fins of the radiator arranged on the high-temperature area of the circuit board can face the driving motor and are closer to an air channel formed between the motor air inlet and the engine base air inlet; the radiating fins facing the driving motor can radiate the heat of the high-temperature area of the circuit board absorbed by the radiator towards the air channel, and the radiated heat is rolled away by utilizing the airflow of the air channel, so that the heat radiation of the circuit board is realized, a wind scooper or a complicated transverse air channel structure does not need to be arranged in the base, and the internal structure of the base is simplified.

Description

Technical Field

[0001] The utility model relates to the field of food processors, in particular to a food processor base with a simple heat dissipation structure. Background Art

[0002] The food processor includes a machine base and a mixing cup. The mixing cup is mounted on the machine base and is provided with a mixing knife in the mixing cup, which is connected to the driving motor in the machine base through the transmission knife base, and the driving motor drives the mixing cup to mix and crush the ingredients in the mixing cup. The driving motor and other electrical components of the food processor are controlled by a circuit board, and the driving motor and the circuit board generate heat due to work when the food processor is working, so the driving motor and the circuit board need to be cooled. In a flat food processor base, in order to obtain a shorter body, the circuit board is horizontally placed to save the height space for arranging the circuit board and achieve the purpose of reducing the height of the body. However, after the circuit board is placed horizontally, it is not easy to dissipate heat. For this reason, in the prior art, heat is dissipated for the horizontally placed circuit board by adding an air guide cover or arranging a horizontal air duct, but this makes the internal structure of the base too complicated. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a food processor base with a simple heat dissipation structure.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A food processor base with a simple heat dissipation structure comprises a casing, a driving motor and an electric control element disposed in an inner cavity of the casing, the top of the casing forms an installation position for placing a food processor cup, a driving shaft of the driving motor passes through the installation position and is transmission-connected to a crushing blade in the food processor cup, the electric control element comprises a circuit board,

[0006] A sleeve is extended upward from the bottom wall of the casing below the driving motor, and a machine base air outlet and a machine base air inlet are also provided on the bottom wall of the casing, the machine base air outlet and the machine base air inlet are separated by the sleeve, the machine base air outlet is arranged on the inner side of the sleeve, and the machine base air inlet is arranged on the outer side of the sleeve and arranged around the sleeve;

[0007] A cooling fan coaxially rotating with the driving shaft is provided below the driving motor, and the bottom of the driving motor is pressed against the top of the sleeve to close the opening of the sleeve, the cooling fan is located in the sleeve to form an air outlet cavity, and the driving motor is also provided with a motor air inlet connected to the air outlet cavity; the circuit board, the driving motor and the air inlet of the base are in the same space of the inner cavity of the casing, the circuit board is tilted and a radiator is provided corresponding to the high temperature area on the circuit board;

[0008] The distance between the edge of the circuit board closest to the drive motor and the projection of the drive axis in the horizontal direction is a, and the distance between the edge of the heat sink closest to the drive motor and the projection of the drive axis in the horizontal direction is b, and b is smaller than a.

[0009] The air inlet of the base is arranged close to the circuit board.

[0010] The air inlets of the machine base are arranged at two locations symmetrically.

[0011] The bottom wall of the casing bulges inwardly to form an air inlet cavity at the bottom of the casing, and the base air inlet is arranged at the top of the air inlet cavity.

[0012] The bottom wall of the casing extends downward to form a baffle, and the baffle is spaced between the air inlet of the base and the air outlet of the base and is provided with an opening toward the rear side of the casing.

[0013] A sealing gasket is provided at the bottom of the driving motor and is clamped between the bottom of the driving motor and the top edge of the sleeve.

[0014] The beneficial effects of the utility model are as follows: the utility model tilts the horizontally placed circuit board without affecting the design of lowering the height of the machine base and can enable the cooling fins of the radiator arranged on the high-temperature zone of the circuit board to face the drive motor and be closer to the air duct formed between the motor air inlet and the machine base air inlet; the cooling fins facing the drive motor can dissipate the heat absorbed by the radiator in the high-temperature zone of the circuit board toward the air duct, and use the airflow of the air duct to sweep away the dissipated heat, thereby achieving heat dissipation of the circuit board; there is no need to arrange an air guide cover or a complex horizontal air duct structure in the machine base, and the internal structure of the machine base is simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a cross-sectional view of the air duct of the utility model;

[0018] Figure 3 It is a disassembly schematic diagram of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the casing part of the utility model. DETAILED DESCRIPTION

[0020] Reference Figures 1 to 4A food processor base includes a casing 1, a driving motor 2 and an electronic control component placed in an inner cavity of the casing, a mounting position 11 for placing a food processing cup is formed on the top of the casing 1, a driving shaft 21 of the driving motor 2 passes through the mounting position 11 and is transmission-connected to a crushing blade in the food processing cup, and the electronic control component includes a circuit board 3.

[0021] A sleeve 12 extends upward from the bottom wall of the casing 1 below the driving motor 2, and the bottom wall of the casing 1 is also provided with a base air outlet 13 and a base air inlet 14, the base air outlet 13 and the base air inlet 14 are separated by the sleeve 12, the base air outlet 13 is arranged on the inner side of the sleeve 12, and the base air inlet 14 is arranged on the outer side of the sleeve 12 and arranged around the sleeve 12. A cooling fan 4 that rotates coaxially with the driving shaft 21 is provided below the driving motor 2, and the bottom of the driving motor 2 is pressed against the top of the sleeve 12 to close the opening of the sleeve 12. The cooling fan 4 is located in the sleeve 12 and rotates to fan the air flow and exhaust air from the base air outlet 13, so that an air outlet cavity 7 is formed in the sleeve 12. The driving motor 2 is also provided with a motor air inlet 22 that is connected to the air outlet cavity 7. Due to the continuous exhaust of air in the air outlet cavity 7, a negative pressure is formed, so that the motor air inlet 22 sucks air from the inner cavity of the casing 1 to dissipate heat inside the driving motor 2, and the base air inlet 14 continuously replenishes the inner cavity of the casing 1 with external cold air. At this time, an air duct 8 is formed in the inner cavity of the casing 1 between the motor air inlet 22 and the base air inlet 14, and convection heat dissipation is achieved in conjunction with the exhaust of the air outlet cavity 7.

[0022] The circuit board 3, the drive motor 2 and the base air inlet 14 are in the same space of the inner cavity of the casing 1, the circuit board 3 is tilted and a radiator 5 is provided corresponding to the high temperature zone on the circuit board 3. At this time, the distance between the edge of the circuit board 3 closest to the drive motor 2 and the projection of the drive shaft 21 in the horizontal direction is a, and the distance between the edge of the radiator 5 closest to the drive motor 2 and the projection of the drive shaft 21 in the horizontal direction is b, and b is less than a, that is, the radiator 5 is arranged closer to the drive motor 2 than the circuit board 3, so that the cooling fins 51 of the radiator 5 can face the drive motor 2 and be closer to the air duct 8 formed between the motor air inlet 22 and the base air inlet 14, and the cooling fins 51 facing the drive motor 2 can dissipate the heat absorbed by the radiator 5 in the high temperature zone of the circuit board 3 toward the air duct 8, and use the airflow of the air duct 8 to roll away the dissipated heat, thereby realizing the heat dissipation of the circuit board 3.

[0023] In order to enhance the effect of the air duct 8 on the heat dissipated by the radiator 5, the machine base air inlet 14 is arranged close to the circuit board 3, so that the air duct 8 formed between the machine base air inlet 14 and the motor air inlet 22 is located on the side where the circuit board 3 is located, which is easier to draw in the heat dissipated by the radiator 5. The machine base air inlet 14 is arranged in two symmetrical locations, thereby forming a larger range of air duct 8.

[0024] The bottom wall of the housing 1 bulges inwards, so that an air inlet cavity 6 is formed at the bottom of the housing 1. The base air inlet 14 is arranged at the top of the air inlet cavity 6, so that the air inlet is smoother, thereby obtaining a larger air inlet volume, and forming a stronger heat dissipation airflow in the air duct 8. The bottom wall of the housing 1 also extends downward to form a baffle 15, and the baffle 15 is spaced between the base air inlet 14 and the base air outlet 13 and has an opening 16 toward the rear side of the housing 1, so that the air inlet and air outlet of the base will not affect each other, and also ensure the smoothness of the air inlet and outlet, so that the convection effect becomes better.

[0025] A sealing gasket 9 is provided at the bottom of the driving motor 2 and clamped between the bottom of the driving motor 2 and the top edge of the sleeve 12 to ensure that the airflow will completely enter from the motor air inlet 22 and flow through the interior of the driving motor 2 into the air outlet cavity 7.

[0026] The utility model tilts the horizontally placed circuit board 3, which does not affect the design of lowering the height of the base and can achieve heat dissipation of the circuit board 3. There is no need to arrange an air guide cover or a complex horizontal air duct structure in the base, and the internal structure of the base is simplified.

Claims

1. A food processor base with a simple heat dissipation structure, comprising a housing (1), a driving motor (2) and an electric control element disposed in an inner cavity of the housing, wherein a mounting position (11) for placing a food processor cup is formed on the top of the housing (1), a driving shaft (21) of the driving motor (2) passes through the mounting position (11) and is transmission-connected to a crushing blade in the food processor cup, and the electric control element comprises a circuit board (3), characterized in that: A sleeve (12) extends upward from the bottom wall of the casing (1) below the drive motor (2); the bottom wall of the casing (1) is also provided with a machine base air outlet (13) and a machine base air inlet (14); the machine base air outlet (13) and the machine base air inlet (14) are separated by the sleeve (12); the machine base air outlet (13) is arranged on the inner side of the sleeve (12); and the machine base air inlet (14) is arranged on the outer side of the sleeve (12) and surrounds the sleeve (12); A cooling fan (4) is provided below the driving motor (2) and rotates coaxially with the driving shaft (21), and the bottom of the driving motor (2) is pressed against the top of the sleeve (12) to close the opening of the sleeve (12); the cooling fan (4) is located inside the sleeve (12) to form an air outlet cavity (7); the driving motor (2) is also provided with a motor air inlet (22) connected to the air outlet cavity (7); the circuit board (3), the driving motor (2) and the base air inlet (14) are located in the same space of the inner cavity of the casing (1); the circuit board (3) is arranged obliquely and a radiator (5) is provided corresponding to the high temperature area on the circuit board (3); The distance between the edge of the circuit board (3) closest to the drive motor (2) and the projection of the drive shaft (21) in the horizontal direction is a, and the distance between the edge of the heat sink (5) closest to the drive motor (2) and the projection of the drive shaft (21) in the horizontal direction is b, and b is smaller than a.

2. The food processor base according to claim 1, characterized in that: The base air inlet (14) is arranged close to the circuit board (3).

3. The food processor base according to claim 2, characterized in that: The machine base air inlets (14) are arranged at two locations symmetrically.

4. The food processor base according to claim 1, 2 or 3, characterized in that: The bottom wall portion of the casing (1) bulges inwards, so that an air inlet cavity (6) is formed at the bottom of the casing (1), and the base air inlet (14) is arranged at the top of the air inlet cavity (6).

5. The food processor base according to claim 1, 2 or 3, characterized in that: The bottom wall of the casing (1) extends downward to form a baffle (15); the baffle (15) is spaced between the base air inlet (14) and the base air outlet (13) and is provided with an opening (16) toward the rear side of the casing (1).

6. The food processor base according to claim 1, characterized in that: A sealing gasket (9) is provided at the bottom of the drive motor (2) and is clamped between the bottom of the drive motor (2) and the top edge of the sleeve (12).

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