Food processor with waterproof ventilation structure

Abstract

The utility model belongs to the technical field of cooking equipment, and particularly relates to a food processor with a waterproof ventilation structure, which comprises a main machine, a cup body and a driving device, the main machine and the cup body are connected with each other, and the driving device is arranged in the main machine or on the cup body. A stirring assembly in transmission connection with the driving device is arranged in the stirring cavity, a battery module used for supplying power to the driving device or an external plug-in module is arranged in the main machine, a plurality of ventilation openings and a blocking piece used for sealing the ventilation openings are arranged at the bottom of the main machine, and the blocking piece can ascend to open the ventilation openings. When the blocking piece moves downwards to close the ventilation opening, water can be prevented from entering the main machine through the ventilation opening, and therefore the main machine can be directly washed and even placed in a dish washing machine to be washed, and the washing effect is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cooking equipment, in particular to a food cooking machine with a waterproof ventilation structure. Background Art

[0002] Food processors are a common cooking device for processing food ingredients and are popular among users due to their convenience, especially food processors with a stirring function, such as wall breaking machines and soy milk machines. The food processors include a main unit and a cup body. A heating plate and a chopping mechanism are provided on the top of the main unit, and a power device for driving the chopping mechanism to rotate is provided inside the main unit. In order to prevent heat accumulation inside the main unit, a ventilation structure for heat dissipation is usually required to be provided on the main unit, and a fan is provided inside the main unit for driving air flow through the ventilation structure in and out of the main unit to take away heat. However, due to the ventilation structure, in order to prevent water from entering the main unit, the existing main unit cannot be directly rinsed, especially cannot be directly put into a dishwasher for cleaning. Therefore, food residues on the heating plate and the chopping mechanism are often not thoroughly cleaned or are difficult to clean. Therefore, it is very necessary to develop a food processor that can be directly rinsed. Utility Model Content

[0003] The purpose of the utility model is to overcome the technical deficiency of the existing food processor that the host machine cannot be directly rinsed, and to provide a food processor with a waterproof ventilation structure, which can achieve heat dissipation by opening the ventilation structure during operation and achieve sealing and waterproofing by closing the ventilation structure during cleaning, thereby making the cleaning of the host machine more thorough.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A food processor with a waterproof ventilation structure comprises a main unit and a cup body connected to each other, and a driving device arranged in the main unit or on the cup body, the cup body is provided with a stirring chamber, a stirring assembly drivingly connected to the driving device is provided in the stirring chamber, a battery module or an external plug-in module for supplying power to the driving device is provided in the main unit, a plurality of vents and sealing members for sealing the plurality of vents are provided at the bottom of the main unit, and the sealing members can rise to open the vents.

[0006] Compared with the prior art, the food processor provided by the utility model is provided with a plugging member that can open the vent. When the plugging member opens the vent, wind can enter and exit the main unit through the vent, thereby achieving heat dissipation when the food processor is working. When the plugging member moves down to close the vent, water can be prevented from entering the main unit through the vent, thereby achieving direct rinsing of the main unit, or even placing it in a dishwasher for cleaning, thereby effectively improving the cleaning effect. This patent does not limit the driving method of the plugging member, which can be achieved by setting a mechanical mechanism, such as using an elastic pressing structure on an existing elastic sealing cover for a thermos pot, and repeatedly pressing the plugging member to achieve a change in its height, thereby switching between the two states of opening and closing the vent. Alternatively, the following structure can be used to automatically open the plugging member using gravity:

[0007] The bottom of the blocking piece is provided with a trigger convex portion extending downward from the bottom surface of the main unit. When the trigger convex portion is pushed upward, the blocking piece can be driven to rise and open the vent. By providing a trigger convex portion protruding from the bottom of the main unit, when the main unit is placed on the placement surface, the trigger convex portion is pushed upward to drive the blocking piece to move upward. This arrangement can automatically open the vent when the food processor is used, and the operation is very convenient.

[0008] As a specific setting method of a sealing member, the vent ring is provided with a first wind guide wall extending obliquely downward, the first wind guide wall is inclined inward from top to bottom to form a conical surface, the bottom of the first wind guide wall is connected to a first base plate, a first through hole is opened in the middle of the first base plate, the sealing member includes an axis portion that can pass through the first through hole up and down, a sealing portion connected to the upper end of the axis portion, the trigger protrusion is formed at the lower end of the axis portion, the host is configured with an elastic reset member that drives the sealing member to move downward and reset, the sealing portion is sealed and cooperated with the first wind guide wall as the sealing member moves downward, and a breathable structure is provided on the first wind guide wall and / or the first base plate. The above setting method can reduce the height of the sealing member and save internal space of the host. The inclined setting of the first wind guide wall can guide wind to the breathable structure, accelerate the flow of wind, and improve the heat dissipation effect.

[0009] As another way of setting the sealing member, the vent ring is provided with a second air guide wall extending downward, the bottom of the second air guide wall is connected to a second bottom plate, a second through hole is opened in the middle of the second bottom plate, the sealing member includes an axis portion that can pass through the second through hole up and down, a sealing portion connected to the upper end of the axis portion and located on the upper side of the vent, the trigger protrusion is formed at the lower end of the axis portion, the main unit is configured with an elastic reset member that drives the sealing member to move downward and reset, the sealing portion is arranged on the upper side of the vent as the sealing member moves downward, and a sealing cover is arranged on the upper side of the vent, and a breathable structure is arranged on the second air guide wall and / or the second bottom plate. This setting method has a good sealing effect.

[0010] Furthermore, the lower end of the shaft is connected to a base, and the elastic reset member is configured to abut against a spring between the bottom of the bottom plate and the base; or, a baffle fixedly connected to the host is provided above the vent, and the sealing member also includes a guide column connected to the upper end of the sealing portion, the baffle is provided with a through hole for the guide column to pass through up and down, and the elastic reset member is configured to abut against a spring between the upper end of the sealing portion and the bottom end of the baffle.

[0011] The cover is connected to the upper end of the shaft, and the cover is connected to the upper end of the shaft, and the sealing cover is arranged on the upper end of the third through hole.

[0012] Furthermore, in order to avoid water accumulation inside the sealing cover, a drainage structure is provided at the bottom of the sealing cover to drain water.

[0013] As another way of setting the blocking member, the blocking member includes a shaft portion that can move up and down and penetrate the vent, a plug connected to the upper end of the shaft portion, and a bottom cover connected to the bottom end of the shaft portion. The host is configured with an elastic reset member for driving the blocking member to move downward and reset. The trigger protrusion is arranged at the bottom of the bottom cover, and the plug is sealed and covered on the upper side of the vent as the blocking member moves downward. Preferably, the elastic reset member is arranged as a spring abutting between the outer periphery of the bottom side of the vent and the upper end of the bottom cover. Preferably, the upper end face of the plug is arranged as a conical surface with the middle portion extending obliquely downward toward the periphery. The setting of the conical surface can guide the wind to the periphery of the plug, thereby accelerating the wind flow to the vent.

[0014] Furthermore, a linkage mechanism is connected between the blocking pieces corresponding to the plurality of vents to drive the blocking pieces to move up and down synchronously. The linkage mechanism can realize the synchronous movement of the blocking pieces and quickly open or close the vents.

[0015] Furthermore, the vent is arranged at the lowest end of the main unit to achieve drainage, thereby preventing water from entering the main unit and accumulating in the main unit and being unable to be discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a food processor;

[0017] Figure 2 A schematic diagram of the bottom structure of a food processor when the fourth blocking member setting method is adopted;

[0018] Figure 3 and Figure 4 This is a cross-sectional view of a food processor using the fourth blocking member setting method, wherein Figure 3 To close the vent, Figure 4 To open the vent, Figure 4 The direction indicated by the arrow is the direction of wind flow;

[0019] Figure 5 A cross-sectional view of a food processor using the first blocking member setting method;

[0020] Figure 6 A cross-sectional view of a food processor using a second blocking member setting method;

[0021] Figure 7 A schematic diagram of the structure of one of the configuration modes of the elastic reset element;

[0022] Figure 8 A cross-sectional view of a food processor using a third sealing member setting method;

[0023] Fig. 9 It is a structural schematic diagram of a linkage mechanism between blocking parts;

[0024] Fig.10 A schematic diagram of the bottom structure of a food processor when the first and second blocking member settings are adopted;

[0025] Fig.11 It is a structural diagram of the linkage mechanism;

[0026] Fig.12 This is a schematic diagram of the bottom structure of a food processor when the third sealing member setting method is adopted. DETAILED DESCRIPTION

[0027] A preferred specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0028] See also Figures 1 to 4A food processor with a waterproof ventilation structure comprises a main unit 1 and a cup body 2 connected to each other, and a driving device 3, wherein the above-mentioned connection includes a case where the main unit 1 and the cup body 2 are detachable or integral, the cup body 2 is provided with a stirring chamber 20, the driving device 3 can be arranged on the main unit 1 or the cup body 2, and the driving device 3 of this embodiment is arranged inside the main unit 1, and a stirring assembly 4 is provided at the bottom of the stirring chamber 20, which is transmission-connected to the driving device 3, and a plurality of vents 5 and a blocking member 6 for sealing the vents 5 are arranged at the bottom of the main unit 1, and the blocking member 6 can be raised to open the vents 5, so that wind can enter and exit the main unit 1 through the vents 5, so as to achieve heat dissipation when the food processor is working, and when the blocking member 6 moves down to close the vents 5, it can prevent water from entering the main unit 1 through the vents 5, so as to achieve direct flushing of the main unit 1, or even put it in a dishwasher for 360-degree cleaning, effectively improving the cleaning effect. Further, the vents 5 are arranged at the lowest end of the main unit 1 to achieve drainage, so as to prevent water from accumulating in the main unit 1 after entering the main unit 1 and being unable to be discharged.

[0029] See also Figure 3 and Figure 4 In a specific embodiment, a chassis 13 is provided on the upper side of the main unit 1, and the chassis 13 can be a heating plate. The driving device 3 is arranged inside the main unit 1, and the bottom of the cup body 2 is open. A sealing ring 131 is arranged on the peripheral side of the chassis 13 to seal with the main unit 1. The cup body 2 can be detachably pressed against the upper end of the sealing ring 131 to enclose the chassis 13 to form the stirring chamber 20.

[0030] See also Figure 2 and Figure 3 The bottom of the blocking member 6 is provided with a trigger protrusion 61 extending downward from the bottom surface of the main unit 1. When the trigger protrusion 61 is pushed upward, the blocking member 6 can be driven to rise and open the vent 5. By setting the trigger protrusion 61 protruding from the bottom of the main unit 1, when the main unit 1 is placed on the placement surface, the trigger protrusion 61 is pushed up to drive the blocking member 6 to move upward. This setting method can automatically open the vent 5 when the food processor is used, and the operation is very convenient.

[0031] Four specific implementations of the blocking member 6 are provided below.

[0032] A first embodiment as the blocking member 6:

[0033] See also Figure 5 and Fig.10The vent 5 is surrounded by a first wind guide wall 51a extending obliquely downward, the first wind guide wall 51a is inclined inward from top to bottom to form a cone, the bottom of the first wind guide wall 51a is connected to a first bottom plate 52a, the middle of the first bottom plate 52a is provided with a first through hole 53a, the blocking member 6 includes a shaft portion 62 that can pass through the first through hole 53a up and down, and a sealing portion 63 connected to the upper end of the shaft portion 62, the trigger protrusion 61 is formed at the lower end of the shaft portion 62, the host 1 is provided with an elastic reset member 7 for driving the blocking member 6 to move downward and reset, the sealing portion 63 is sealed and cooperated with the first wind guide wall 51a as the blocking member 6 moves downward, and a breathable structure 50 is provided on the first wind guide wall 51a and / or the first bottom plate 52a. The above-mentioned arrangement can reduce the height of the blocking member 6 and save the internal space of the host 1. The inclined arrangement of the first wind guide wall 51a can guide the wind to the breathable structure 50, accelerate the flow of wind, and improve the heat dissipation effect.

[0034] 2. The second embodiment of the blocking member 6:

[0035] See also Figure 6 and Fig.10 The vent 5 is ringed with a second air guide wall 51b extending downward, the bottom of the second air guide wall 51b is connected to a second bottom plate 52b, a second through hole 53b is opened in the middle of the second bottom plate 52b, the blocking member 6 includes a shaft portion 62 that can pass through the second through hole 53b up and down, a sealing portion 63 connected to the upper end of the shaft portion 62 and located on the upper side of the vent 5, the trigger convex portion 61 is formed at the lower end of the shaft portion 62, the host 1 is configured with an elastic reset member 7 for driving the blocking member 6 to move downward and reset, the sealing portion 63 is arranged on the upper side of the vent 5 with the downward movement of the blocking member 6, and a breathable structure 50 is arranged on the second air guide wall 51b and / or the second bottom plate 52b, and this arrangement has a good sealing effect.

[0036] It should be noted that the shaft portion 62 and the corresponding first through hole 53a and second through hole 53b are preferably in a sealed sliding fit or a clearance fit.

[0037] For the above-mentioned first and second arrangements of the blocking member 6, the elastic reset member 7 has two specific arrangements, including:

[0038] 1See Figure 5 and Figure 6 The lower end of the shaft portion 62 is connected to a base 69 , and the elastic reset member 7 is configured as a spring abutting between the bottom of the bottom plate 53 a / 53 b and the base 69 .

[0039] 2See Figure 7A baffle 11 fixedly connected to the host 1 is provided above the vent 5, the blocking member 6 also includes a guide column 64 connected to the upper end of the sealing portion 63, the baffle 11 is provided with a through hole 111 for the guide column 64 to pass through up and down, and the elastic reset member 7 is configured as a spring abutting between the upper end of the sealing portion 63 and the bottom end of the baffle 11.

[0040] 3. A third embodiment of the blocking member 6:

[0041] See also Figure 8 and Fig.12 The vent 5 is surrounded by a third wind guide wall 51c extending downward, the bottom of the third wind guide wall 51c is connected to a third bottom plate 52c, a third through hole 53c is opened in the middle of the third bottom plate 52c, the blocking member 6 includes a shaft portion 62 that can pass through the third through hole 53c up and down, and a cover plate 65 connected to the upper end of the shaft portion 62, the cover plate 65 is reset as the blocking member 6 moves downward and is arranged on the upper end of the third through hole 53c, and the trigger protrusion 61 is arranged to be connected to the shaft portion The sealing cover 66 at the lower end of the third air guide wall 51c can be sealed and sleeved on the peripheral side of the third air guide wall 51c with the blocking member 6 moving up and down. An elastic reset member 7 is provided between the third bottom plate 52c and the sealing cover 66 to drive the blocking member 6 to move down and reset. A first exhaust port 511c is provided at the bottom of the third air guide wall 51c. A sealing structure, such as a sealing strip, is provided between the third air guide wall 51c and the sealing cover 66. The sealing structure is provided on the upper and lower sides of the first exhaust port 511c. The sealing cover 66 has a second exhaust port 661 corresponding to the exhaust port. When the sealing cover 66 moves up to the first exhaust port 511c and aligns with the second exhaust port 661, ventilation is achieved. The above-mentioned arrangement is compact in structure, and the cooperation between the sealing cover 66 and the third air guide wall 51c is smooth. When the sealing cover 66 moves down to the second exhaust port 661 and staggers with the first exhaust port 511c, the ventilation port 5 is sealed.

[0042] In order to prevent water from accumulating inside the sealing cover 66 , a drainage structure 662 is provided at the bottom of the sealing cover 66 for drainage.

[0043] Four as the fourth embodiment of the blocking member 6:

[0044] See also Figure 3 and Figure 4The blocking member 6 includes a shaft 62 that can move up and down and penetrate the vent 5, a plug 67 connected to the upper end of the shaft 62, and a bottom cover 68 connected to the bottom end of the shaft 62. The host 1 is provided with an elastic reset member 7 for driving the blocking member 6 to move down and reset. The trigger convex portion 61 is arranged at the bottom of the bottom cover 68, and the plug 67 is sealed and covered on the upper side of the vent 5 as the blocking member 6 moves down. It should be noted that the shaft 62 in this embodiment is interference fit with the vent 5, that is, there is a gap between the vent 5 and the shaft 62 for air to pass through.

[0045] See also Figure 4 The elastic reset member 7 is configured as a spring abutting between the periphery of the bottom side of the vent 5 and the upper end of the bottom cover 68. The upper end surface of the plug 67 is configured as a conical surface with the middle portion extending obliquely downward toward the periphery. The setting of the conical surface can guide the wind to the periphery of the plug 67, thereby accelerating the wind flow toward the vent 5.

[0046] See also Figure 4 A motor cover 8 is further provided in the main unit 1, and the vent 5 includes an air outlet 501 provided at the bottom of the main unit 1 and an air inlet 502 located at the side of the air outlet 501. The motor cover 8 is provided with an air outlet channel 81 extending downward and connected to the air outlet 501, and an air guide port 82 connected to the air outlet channel 81 is provided at the upper portion thereof. The driving device 3 is installed in the air outlet channel 81, and a fan 83 is further provided in the air outlet channel 81. The fan 83 is used to drive the wind to flow into the main unit 1 from the air inlet 502, and flow upward through the air guide port 82 to enter the air outlet channel 81, and then flow downward toward the air outlet 501.

[0047] See also Figure 4 A sealing ring 84 is provided on the lower side ring of the motor cover 8, and an upwardly extending side edge 12 is provided on the peripheral side of the main unit 1 located at the air outlet 501, and the sealing ring 84 abuts against the upper end of the side edge 12, or is infinitely close to the upper end of the side edge 12.

[0048] The above arrangement can ensure that the wind in the air outlet channel 81 flows toward the air outlet 501 without overflowing the air outlet channel 81 , thereby ensuring that the heat flows toward the air outlet 501 .

[0049] See also Fig.11 As an improved solution, the blocking pieces 6 corresponding to the plurality of vents 5 are connected with a linkage mechanism 60 for driving each blocking piece 6 to move up and down synchronously. Setting the linkage mechanism 60 can realize the synchronous movement of each blocking piece 6 and realize the rapid opening or closing of each vent 5.

[0050] Compared with the prior art, the food processor provided by the utility model utilizes gravity to realize the opening and closing of the vent 5. Specifically, when the food processor is placed on a placement surface, the placement surface will push up the blocking member 6, thereby automatically opening the vent 5 to exhaust air, so that the food processor can work normally. When it leaves the placement surface, under the elastic force of the elastic reset member 7, the blocking member 6 will automatically move downward and reset and close the vent 5, thereby sealing the main unit 1 to achieve waterproofing, so that the user can directly rinse the food processor. Of course, the main unit 1 can be directly disassembled for rinsing, or even put into the dishwasher for 360-degree cleaning, which effectively improves the cleaning effect and convenience of the food processor. It should be noted that the elastic force provided by the elastic reset member 7 of the utility model is smaller than the gravity of the food processor itself.

[0051] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A food processor with a waterproof and ventilated structure, comprising a main unit (1) and a cup body (2) connected to each other, and a driving device (3) arranged in the main unit (1) or on the cup body (2), the cup body (2) being provided with a stirring chamber (20), a stirring assembly (4) being provided in the stirring chamber (20) and being transmission-connected to the driving device (3), a battery module or an external plug-in module for supplying power to the driving device (3) being provided in the main unit (1), characterized in that: The bottom of the main machine (1) is provided with a plurality of ventilation openings (5) and a sealing member (6) for sealing the plurality of ventilation openings (5); the sealing member (6) can be raised to open the ventilation openings (5).

2. The food processor according to claim 1, characterized in that: The bottom of the blocking member (6) is provided with a trigger protrusion (61) extending downward from the bottom surface of the main unit (1); when the trigger protrusion (61) is pushed upward, the blocking member (6) can be driven to rise and open the vent (5).

3. The food processor according to claim 2, characterized in that: The vent (5) is surrounded by a first wind guide wall (51a) extending obliquely downward, the first wind guide wall (51a) is inclined inward from top to bottom to form a conical surface, the bottom of the first wind guide wall (51a) is connected to a first bottom plate (52a), a first through hole (53a) is opened in the middle of the first bottom plate (52a), the blocking member (6) comprises a shaft portion (62) which can pass through the first through hole (53a) up and down, and a sealing portion (63) connected to the upper end of the shaft portion (62), the triggering protrusion (61) is formed at the lower end of the shaft portion (62), the main unit (1) is provided with an elastic reset member (7) for driving the blocking member (6) to move downward and reset, the sealing portion (63) is sealed and matched with the first wind guide wall (51a) as the blocking member (6) moves downward, and a breathable structure (50) is provided on the first wind guide wall (51a) and / or the first bottom plate (52a).

4. The food processor according to claim 2, characterized in that: The ventilation opening (5) is surrounded by a second air guide wall (51b) extending downward, the bottom of the second air guide wall (51b) is connected to a second bottom plate (52b), a second through hole (53b) is provided in the middle of the second bottom plate (52b), the blocking member (6) comprises an axis (62) which can pass through the second through hole (53b) up and down, a sealing member (63) which is connected to the upper end of the axis (62) and is located on the upper side of the ventilation opening (5), the triggering protrusion (61) is formed at the lower end of the axis (62), the main unit (1) is provided with an elastic reset member (7) which drives the blocking member (6) to move downward and reset, the sealing member (63) is provided on the upper side of the ventilation opening (5) as the blocking member (6) moves downward, and a breathable structure (50) is provided on the second air guide wall (51b) and / or the second bottom plate (52b).

5. The food processor according to claim 3 or 4, characterized in that: The lower end of the shaft portion (62) is connected to a base (69), and the elastic reset member (7) is configured as a spring abutting between the bottom of the base plate and the base (69).

6. The food processor according to claim 3 or 4, characterized in that: A baffle (11) fixedly connected to the main unit (1) is provided above the vent (5); the blocking member (6) further comprises a guide column (64) connected to the upper end of the sealing portion (63); the baffle (11) is provided with a through hole (111) for the guide column (64) to pass through from top to bottom; and the elastic reset member (7) is configured as a spring abutting between the upper end of the sealing portion (63) and the bottom end of the baffle (11).

7. The food processor according to claim 2, characterized in that: The vent (5) is surrounded by a third air guide wall (51c) extending downward, the bottom of the third air guide wall (51c) is connected to a third bottom plate (52c), a third through hole (53c) is opened in the middle of the third bottom plate (52c), the blocking member (6) comprises a shaft portion (62) which can pass through the third through hole (53c) up and down, and a cover plate (65) connected to the upper end of the shaft portion (62), the cover plate (65) is arranged at the upper end of the third through hole (53c) when the blocking member (6) moves downward, and the trigger protrusion (61) is arranged to be connected to the lower end of the shaft portion (62). A sealing cover (66) is provided, wherein the sealing cover (66) can be movably mounted up and down with the blocking member (6) to be sealingly sleeved on the peripheral side of the third air guide wall (51c); an elastic reset member (7) is provided between the third bottom plate (52c) and the sealing cover (66) to drive the blocking member (6) to move downward and reset; a first exhaust port (511c) is provided at the bottom of the third air guide wall (51c); a second exhaust port (661) is provided in the sealing cover (66) corresponding to the exhaust port; ventilation is achieved when the sealing cover (66) moves up to the first exhaust port (511c) and is aligned with the second exhaust port (661).

8. The food processor according to claim 7, characterized in that A plurality of drainage structures (662) are provided at the bottom of the sealing cover (66).

9. The food processor according to claim 2, wherein: The blocking member (6) comprises a shaft (62) which can move up and down and penetrate the ventilation opening (5), a plug (67) connected to the upper end of the shaft (62), and a bottom cover (68) connected to the bottom end of the shaft (62). The host (1) is provided with an elastic reset member (7) for driving the blocking member (6) to move downward and reset. The trigger protrusion (61) is arranged at the bottom of the bottom cover (68). The plug (67) is sealed and covered on the upper side of the ventilation opening (5) as the blocking member (6) moves downward.

10. The food processor according to claim 9, characterized in that The elastic return member (7) is configured as a spring abutting between the periphery of the bottom side of the vent (5) and the upper end of the bottom cover (68).

11. The food processor according to claim 9, characterized in that The upper end surface of the plug (67) is arranged as a conical surface with the middle portion extending obliquely downward toward the periphery.

12. The food processor according to any one of claims 1, 2, 3, 4, 7 and 9, characterized in that: A linkage mechanism (60) is connected between the blocking pieces (6) corresponding to the plurality of ventilation openings (5) to drive each blocking piece (6) to move up and down synchronously.

13. The food processor according to any one of claims 3, 4, 7 and 9, characterized in that: The main unit (1) is also provided with a motor cover (8), the vent (5) comprises an air outlet (501) arranged at the bottom of the main unit (1) and an air inlet (502) located at the side of the air outlet (501), the motor cover (8) is provided with an air outlet channel (81) extending downward and connected to the air outlet (501), and an air guide port (82) connected to the air outlet channel (81) is provided at its upper portion, the driving device (3) is installed in the air outlet channel (81), and a fan (83) is also provided in the air outlet channel (81), the fan (83) is used to drive wind from the air inlet (502) to flow into the main unit (1), and flow upward through the air guide port (82) to enter the air outlet channel (81), and then flow downward toward the air outlet (501).

14. The food processor according to claim 13, characterized in that The lower ring of the motor cover (8) is provided with a sealing ring (84); the main unit (1) is provided with an upwardly extending side edge (12) on the peripheral side of the air outlet (501); the sealing ring (84) abuts against the upper end of the side edge (12) or is infinitely close to the upper end of the side edge (12).

15. The food processor according to claim 1, wherein: A chassis (13) is provided on the upper side of the main machine (1), the driving device (3) is arranged inside the main machine (1), the bottom of the cup body (2) is open, a sealing ring (131) which is sealed with the main machine (1) is arranged on the circumference of the chassis (13), and the cup body (2) is detachably pressed against the upper end of the sealing ring (131) to enclose the stirring chamber (20) with the chassis (13); And / or, the ventilation opening (5) is arranged at the lowest end of the host (1).

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