Food processor

Abstract

The utility model relates to a food processor which comprises a cup body and a shell, a motor is arranged in the shell and located below the cup body, a fan is arranged at the rear end of the motor, an air outlet channel is further arranged in the shell and comprises an air inlet end and an air outlet end, the fan of the motor is located at the air inlet end of the air outlet channel, and an air outlet is formed in the shell. The air outlet end is arranged opposite to the air outlet, the air outlet channel is communicated with the outside through the air outlet, a blocking block used for adsorbing carbon powder is arranged in the air outlet channel and comprises a windward wall, the windward wall is arranged towards the air inlet end, a communicating channel is arranged in the blocking block and penetrates through the blocking block, and a plurality of communicating holes are formed in the windward wall; the total area of the communicating holes is s1, the area of the cross section of the air outlet channel is s2, s1 / s2 is larger than or equal to 0.75 and smaller than or equal to 0.85, the hole diameter of a single communicating hole is d, and d is larger than or equal to 1.5 mm and smaller than or equal to 2.5 mm. The food processor is used for solving the problems that an existing food processor using a brush motor is poor in carbon powder adsorption effect and large in air outlet noise.

Description

Technical Field

[0001] The utility model relates to a kitchen appliance, in particular to a food processing machine. Background Art

[0002] A food processor includes a housing that houses a motor and a cup body. A crushing device is installed in the cup body. The motor drives the crushing device to rotate to process food. The temperature of the motor rises when it is working, and a heat dissipation structure is usually required in the housing to dissipate the heat of the motor. However, the heat dissipation of the motor is usually accompanied by a large air outlet noise, which affects the consumer experience.

[0003] In addition, when using a brushed motor, the motor is equipped with carbon brushes. During the operation of the motor, the carbon brushes will generate carbon powder. The carbon powder will be diffused to the outside of the casing through the air outlet along with the air flow generated by the heat dissipation mechanism, affecting the user experience. To this end, patent CN201920725885.X discloses a solution, which is provided with a carbon powder adsorption member at the air outlet to adsorb the carbon powder generated by the motor carbon brush. However, in this solution, the carbon brush is located at the front end of the motor, and the carbon powder adsorption member is located at the bottom of the motor. Although the heat dissipation port is also set at the rear end of the motor, since the motor shaft is also provided at the front end of the motor, the carbon powder generated by the carbon brush is still relatively easy to diffuse from the gap between the motor shaft and the motor housing to the area outside the motor when the motor is working. The carbon powder scattered on electronic devices such as the power board can easily cause a short circuit in the power board. In addition, this solution only provides an adsorption pad at the air outlet, and the airflow generated by the motor working flows toward the air outlet at a faster rate. When the airflow carrying carbon powder flows through the adsorption pad, the adsorption pad may not be able to completely adsorb the carbon powder in the airflow. The unadsorbed carbon powder can still follow the airflow and diffuse from the air outlet to the outside, causing environmental pollution and affecting the consumer experience. Utility Model Content

[0004] The utility model provides a food processor, which is used to solve the problems of poor motor carbon powder adsorption effect and high noise when the motor is radiating heat, in existing food processors using brush motors.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a food processing machine, comprising a cup body with a grinding chamber, a shell, and a grinding device arranged in the grinding chamber, a motor is arranged in the shell below the cup body, a fan is arranged at the rear end of the motor, and the motor drives the grinding device to rotate, and an air outlet channel is also arranged in the shell, the air outlet channel includes an air inlet end and an air outlet end, the fan of the motor is located at the air inlet end of the air outlet channel, an air outlet is arranged on the shell, the air outlet end and the air outlet are arranged opposite to each other, and the air outlet channel is connected to the outside through the air outlet, characterized in that: a blocking block for adsorbing carbon powder is arranged in the air outlet channel, the blocking block includes a windward wall, the windward wall is arranged toward the air inlet end, a connecting channel is arranged in the blocking block, the connecting channel passes through the blocking block and a plurality of connecting holes are formed on the windward wall, wherein the total area of ​​the connecting holes is s1, the area of ​​the cross section of the air outlet channel is s2, 0.75≤s1 / s2≤0.85, the aperture of a single ventilation hole is d, 1.5mm≤d≤2.5mm.

[0006] Furthermore, the outer side of the motor is provided with an air guide cover forming an air outlet channel, the bottom of the air guide cover extends downward and abuts against the inner bottom wall of the shell, the air outlet is provided on the bottom wall of the shell, and the blocking block is confined within the air guide cover.

[0007] Furthermore, the inner wall of the air guide cover is provided with a protrusion, and the blocking block is supported by the protrusion; or, the blocking block is supported by the bottom wall of the shell.

[0008] Furthermore, an air duct cover is provided in the shell, and the air duct cover and the bottom wall of the shell are combined to form an air outlet channel, and the blocking block is confined in the air outlet channel.

[0009] Furthermore, the air duct cover presses the blocking block against the inner bottom wall of the shell.

[0010] Furthermore, a limiting portion for limiting the blocking block is provided in the air outlet channel.

[0011] Furthermore, the limiting portion includes a limiting hole arranged on the outer wall of the blocking block and a limiting column arranged in the air outlet channel, and the limiting column is inserted into the limiting hole to fix the blocking block in the air outlet channel; or, the limiting portion includes a limiting protrusion arranged in the air outlet channel, and the blocking block abuts against the limiting protrusion; or, the limiting portion includes a limiting groove arranged in the air outlet channel, and the blocking block abuts against the groove wall of the limiting groove.

[0012] Furthermore, the blocking block also includes an air outlet wall, which is arranged toward the air outlet end. The cross-sectional area of ​​the air outlet channel gradually increases from the air inlet end to the air outlet end, and the area of ​​the air outlet wall of the blocking block is larger than the area of ​​the air inlet wall.

[0013] Furthermore, the blocking block is formed by mixing and pressing bamboo charcoal and clay.

[0014] Furthermore, the communication channel includes a plurality of sub-channels, and each sub-channel is respectively connected to a corresponding communication hole on the windward wall.

[0015] The above technical solution has the following beneficial technical effects:

[0016] The vents are formed in a manner that allows the carbon dust to escape from the vents and to flow out of the vents, and the vents are formed in a manner that allows the carbon dust to escape from the vents and to flow out of the vents. The connecting hole is dispersed into multiple tributaries, and each tributary flows out of the shell to the outside through the connecting channel. In this solution, the airflow is separated, and each tributary can be dispersed from the connecting hole into the connecting channel. In the process of flowing through the connecting channel, the blocking block can fully adsorb the carbon powder in the airflow, avoiding that some carbon powder in the airflow cannot be adsorbed and discharged to the outside. Compared with the solution of setting an adsorption pad in the prior art, this solution first sets an air outlet channel, and the airflow formed by the operation of the motor collects the carbon powder in the air outlet channel, and sets a blocking block in the air outlet channel. By setting a connecting channel in the blocking block, the flow path of the airflow in the blocking block is extended, and the contact time between the airflow carrying carbon powder and the blocking block is increased, ensuring that the blocking block can fully absorb the carbon powder in the airflow; at the same time, the windward wall of the blocking block reduces the initial wind pressure and wind speed of the airflow by dividing the airflow into multiple tributaries, avoiding the airflow hitting the shell at a higher wind speed to generate higher noise. The connecting channel further extends the flow path of the airflow, which is also conducive to reducing the noise reaching the air outlet of the shell.

[0017] 2. In the present invention, an air guide cover is provided on the outside of the motor, and an air outlet channel is formed inside the air guide cover. The air guide cover also limits the blocking block. The air guide cover can wrap the motor to prevent carbon powder from diffusing to other parts of the shell. At the same time, there is no need to set up additional components to form the air outlet channel, which reduces the number of parts in the shell, helps to reduce the volume of the whole machine, and makes the whole machine structure more compact.

[0018] 3. In the utility model, an air duct cover is provided in the outer shell, and the air duct cover presses the blocking block against the inner bottom wall of the outer shell to achieve the limitation of the blocking block. There is no need to set up an additional limiting structure for limiting the blocking block, which simplifies the structure of the air duct cover and the outer shell and improves the production and processing efficiency of each component.

[0019] 4. In the present invention, the cross-sectional area of ​​the air outlet end of the air outlet channel is larger than that of the air inlet end, the area of ​​the air outlet wall of the blocking block is larger than that of the air inlet wall, and the air inlet end and the windward wall can cooperate to achieve the limitation of the blocking block.

[0020] 5. In the present invention, the air outlet channel includes multiple sub-channels, and the multiple tributaries formed by the separation of the air flow can enter each sub-channel respectively. At this time, each sub-channel in the blocking block adsorbs the tributaries carrying carbon powder in the channel respectively. Compared with a single channel, the tributaries in each sub-channel carry less carbon powder, and the channel wall of the sub-channel can adsorb the carbon powder more effectively, further improving the adsorption effect of the carbon powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Figure 1 This is a structural schematic diagram of an embodiment of the food processing machine of the present utility model;

[0023] Figure 2 for Figure 1 A schematic cross-sectional view of a portion of the structure of a food processing machine;

[0024] Figure 3 for Figure 2 Explosion diagram of the middle part of the structure;

[0025] Figure 4 for Figure 3 Schematic cross-section of each structure;

[0026] Figure 5 for Figure 4 A magnified schematic diagram of point A in the middle;

[0027] Figure 6 for Figure 3 Schematic diagram of the structure of the middle windward wall;

[0028] Figure 7 is a cross-sectional schematic diagram of another embodiment of the food processing machine of the present invention;

[0029] Figure 8 for Figure 7 Enlarged schematic diagram of point B in the middle. DETAILED DESCRIPTION

[0030] like Figures 1-6FIG. 1 shows an embodiment of the present invention, a food processor, comprising a cup body 1, a housing 3 located at the bottom of the cup body 1, a handle 4 provided on one side of the cup body 1, and a soundproof cover 2 provided on the outer side of the cup body 1. A grinding chamber is formed within the cup body 1, and a grinding device is provided within the grinding chamber. A motor 7 is provided within the housing 3. The motor 7 includes a motor shaft provided at the front end of the motor 7 and a fan 71 provided at the rear end of the motor. The motor shaft extends from the bottom of the cup body 1 into the grinding chamber, and the grinding device is mounted at the end of the motor shaft.

[0031] The outer shell 3 includes a shell and a base 31. An air duct cover 5 is arranged in the outer shell 3. A limiting column is arranged on one side of the air duct cover 5. A through hole is arranged in the center of the limiting column. The bottom of the air duct cover 5 is open. The air duct cover 5 includes a circular accommodating cavity and a trapezoidal cover. An opening 51 is arranged on the top of the circular accommodating cavity. The circular accommodating cavity is connected to one end of the short side of the trapezoidal cover. One end of the long side of the trapezoidal cover is open. The bottom end of the air duct cover 5 abuts against the base 31, and one end of the long side of the trapezoidal cover abuts against the side wall of the base 31. The two together enclose an air outlet channel 32. The air outlet channel 32 includes an air inlet end 321 and an air outlet end 322. The air inlet end 321 corresponds to the short side of the trapezoidal cover, and the air outlet end 322 corresponds to the long side of the trapezoidal cover. At this time, the cross-sectional area of ​​the air outlet end 322 is larger than the cross-sectional area of ​​the air inlet end 321. An air outlet 311 is provided on the side wall of the base 31 , and the air outlet end 322 is arranged opposite to the air outlet 311 . A threaded column corresponding to the limiting column is provided on the bottom wall of the base 31 .

[0032] A blocking block 6 is provided within the air outlet duct 32. The blocking block 6 is formed by pressing a mixture of bamboo charcoal and clay. The shape of the blocking block 6 corresponds to the trapezoidal portion of the air duct cover 5. The blocking block 6 includes a windward wall 61 disposed toward the air inlet end 321 and an air outlet wall 62 disposed toward the air outlet end 322. A connecting channel is provided within the blocking block 6. The connecting channel includes multiple sub-channels 63. Each sub-channel 63 passes through the blocking block 6. The sub-channel corresponding to the air inlet end 321 has multiple connecting holes 64 formed on the windward wall 61. The other end of each sub-channel 63 has multiple air outlet holes formed on the air outlet wall 62. The total area of ​​the connecting holes 64 on the windward wall 61 is s1, the cross-sectional area of ​​the air outlet duct 32 is s2, s1 / s2 = 0.8, and the aperture of a single connecting hole is d, d = 2 mm.

[0033] The diameter d of the connecting hole should not be too large, otherwise the connecting hole will not effectively separate the airflow and cannot effectively reduce wind noise. d should not exceed 2.5mm. However, the connecting hole diameter d should not be too small either, because the air outlet channel also plays a role in cooling the motor. If the connecting hole diameter is too small, the airflow will not flow smoothly into the connecting hole, which may easily block the normal discharge of some hot air and increase wind resistance, affecting the cooling effect. Therefore, d should not be less than 1.5mm. Therefore, the aperture of the single connecting hole is set to the above range. Similarly, when the aperture of the connecting hole is determined, in order to fully separate the airflow, it is necessary to ensure that a sufficient number of connecting holes are set on the windward wall, and the ratio of the total area of ​​the connecting holes to the cross-sectional area of ​​the air outlet channel must be at a relatively large value. However, this ratio should not be too large. Considering that the connecting holes are set on the windward wall, in order to ensure that a sufficient number of connecting holes can be reasonably set on the windward wall and to ensure that there is an appropriate interval between each connecting hole, the ratio should not exceed 0.85. Of course, the interval between each connecting hole should not be too large, otherwise the area of ​​the non-connecting hole part on the windward wall will be larger, which will cause obstruction to the airflow and prevent part of the hot air from being discharged normally, which will also affect the heat dissipation effect of the motor. Therefore, the ratio should not be less than 0.75.

[0034] During installation, the blocking block 6 is placed on the base 31, with the air outlet wall 62 of the blocking block 6 abutting against the side wall of the housing, and the air outlet hole and the air outlet are arranged opposite each other. Then, the air duct cover 5 is sleeved on the outside of the blocking block 6 from top to bottom, with the short side of the trapezoidal cover of the air duct cover 5 corresponding to the windward wall 61 of the blocking block, and the long side of the trapezoidal cover corresponding to the air outlet wall 62 of the blocking block 6. Screws are passed through the through holes of the limit posts and threadedly connected to the threaded posts on the bottom wall of the base to fix the air duct cover 5. The bottom end of the air duct cover 5 is pressed against the base 31, and the air duct cover 5 and the base 31 together enclose an air outlet channel. At this time, the air duct cover 5 presses the blocking block 6 against the bottom wall of the base 31. Then, the motor 7 is fixed to the cup body 4, and the fan 71 at the rear end of the motor 7 extends from the opening 51 at the top of the air duct cover 5. The fan 71 is located at the air inlet end 321 of the air outlet channel 32.

[0035] The ratio between the total area of ​​the connecting holes and the cross-sectional area of ​​the air outlet channel is set to the aforementioned ratio, and the aperture range of a single connecting hole is limited. At this time, the area of ​​the windward wall of the blocking block is roughly equivalent to the area of ​​the cross-sectional area of ​​the air outlet channel. When the motor starts working, the fan at the rear end of the motor rotates to form an airflow. At the same time, the carbon powder generated by the motor carbon brush is carried by the airflow into the air inlet end of the air outlet channel. Since the windward wall of the blocking block basically blocks the air outlet channel, the airflow carrying carbon powder will be divided into multiple tributaries when passing through the connecting holes on the windward wall. Each tributary continues to flow into each sub-channel, and then flows out from the air outlet hole of the air outlet wall, and finally flows out from the air outlet on the side wall of the base.

[0036] In this embodiment, an air outlet channel is provided in the housing, so that the carbon powder generated by the carbon brush when the motor is working can be fully gathered, so that the carbon powder can be collected in the air outlet channel under the drive of the air flow formed by the motor working. At the same time, a blocking block is provided in the air outlet channel, and the connecting hole on the windward wall of the blocking block divides the air flow formed by the motor running into multiple tributaries, and each tributary flows into each sub-channel from the connecting hole. At this time, the air flow carrying more carbon powder is divided into several tributaries carrying less carbon powder. When each tributary flows through each sub-channel, the carbon powder can be fully absorbed by the channel wall of the sub-channel. Compared with the prior art, the present solution first provides an air outlet channel, and the air flow formed by the motor working can collect the carbon powder generated by the carbon brush in the air outlet channel. Carbon powder gathers in the air outlet channel. Secondly, a blocking block is set in the air outlet channel. The airflow is separated by the connecting hole of the blocking block and each sub-channel. The airflow carrying more carbon powder is divided into several tributaries carrying less carbon powder. Each tributary flows in the corresponding sub-channel respectively, which prolongs the flow path of the airflow in the blocking block and prolongs the contact time between the airflow and each sub-channel in the blocking block, which can ensure that the blocking block fully absorbs the carbon powder in the airflow; finally, while separating the airflow, the blocking block also reduces the wind pressure and wind speed of the airflow, avoiding the airflow hitting the shell at a higher wind speed to generate a higher noise. Each sub-channel further extends the flow path of the airflow, which is also conducive to reducing the noise reaching the air outlet of the shell. In addition, there may be a certain gap between the blocking block and the air outlet channel, but due to the limitation of the above-mentioned ratio, the size of the gap is small. Even if a part of the airflow may carry carbon powder into the gap, the sub-channel in the blocking block that is not directly opposite the air inlet end and the outer wall of the blocking block adjacent to the air outlet channel can also absorb the carbon powder, ensuring the adsorption effect of the carbon powder.

[0037] By fixing the air duct cover to the base to press the blocking block against the bottom wall of the base, there is no need to set up an additional limiting structure to limit the blocking block, which simplifies the structure of the air duct cover and the shell base and improves the production and processing efficiency of parts.

[0038] In another embodiment, the trapezoidal cover of the air duct cover may also be rectangular. In this case, the cross-sectional areas of the air inlet end and the air outlet end of the air outlet channel formed by the air duct cover and the base are the same.

[0039] Of course, the air duct cover can also be eliminated, and an air guide cover can be set inside the shell and sleeved on the outside of the motor. The bottom of the air guide cover is open, and the bottom end of the air guide cover abuts on the base. An air outlet channel is formed below the motor in the air guide cover, and the air outlet is set on the bottom wall of the base. The blocking block is located below the motor. In this case, the air inlet end of the air outlet channel is formed between the motor and the blocking block, and the air outlet end of the air outlet channel is formed at the bottom of the blocking block. The windward wall of the blocking block is set upward, and the air outlet wall of the blocking block is set downward. A protrusion protruding inward can be set on the inner wall of the air guide cover, and the air outlet wall of the blocking block is supported on the protrusion, forming a buffer gap between the air outlet wall and the base. In this case, the air flow flowing out through the connecting channel first passes through the buffer gap, and then flows out from the air outlet on the bottom wall of the base, which can further extend the flow path of the air flow and reduce noise. It is conceivable that the blocking block can also be directly supported by the base, and in this case, the air outlet wall of the blocking block directly abuts against the bottom wall of the base.

[0040] By eliminating the air duct cover and relying solely on the air guide cover mounted on the outside of the motor to form the air outlet channel, on the one hand, the air guide cover wraps the motor, which can prevent carbon powder from diffusing to other electrical components in the casing, ensuring that all carbon powder can flow through the air outlet channel. On the other hand, reducing the number of parts in the casing is conducive to reducing the volume of the entire machine, making the overall structure more compact.

[0041] For the limitation of the blocking block, a limiting part can also be set in the air outlet channel to limit the blocking block. Taking the above-mentioned air duct cover and the base enclosed to form the air outlet channel as an example, two limiting protrusions 52 can be set at intervals on the top wall of the air duct cover, such as Figure 7-8 As shown, the air duct cover is placed on the blocking block from top to bottom, and the windward wall and the air outlet wall of the blocking block are respectively in contact with two limiting protrusions. Of course, the limiting protrusions can also be set on the inner bottom wall of the base, or one can be set on the inner top wall of the air duct cover and the other on the inner bottom wall of the base.

[0042] In another embodiment, the limiting portion can also be a limiting post provided on the top wall of the air duct cover. Again, taking the air duct cover and the base enclosing the air outlet channel as an example, a limiting hole recessed into the blocking block is provided on the top wall of the blocking block. In this case, after the air duct cover is placed on the blocking block, the limiting post is inserted into the limiting hole from top to bottom. Of course, the limiting post can also be provided on the bottom wall of the base. In this case, the limiting hole is provided on the bottom wall of the blocking block. During installation, the blocking block can be directly installed by aligning the limiting hole with the limiting post, so that the blocking block is limited on the base.

[0043] In addition, the limiting portion can also be a limiting groove formed by the upward depression of the top wall inside the air duct cover. At this time, when the air duct cover is placed on the blocking block, the blocking block is inserted into the limiting groove, and the windward wall and the air outlet wall of the blocking block are respectively in contact with the groove walls of the limiting groove; the limiting groove can also be formed by the downward depression of the bottom wall inside the base. During installation, the blocking block can be directly placed into the limiting groove of the base, and then the air duct cover can be placed outside the blocking block.

[0044] For the connecting channels within the blocking block, each subchannel can have a curved zigzag or curved structure. A subchannel can also have a maze-like structure, meaning that a subchannel connected by a connecting hole can have multiple curved sections within the blocking block. The other end of the subchannel can connect to the corresponding outlet hole or to an outlet hole offset from the connecting hole. By configuring the subchannel as a zigzag structure or dividing it into multiple curved sections, the airflow already separated at the connecting hole can further offset interference within the connecting channel, improving the noise reduction effect of the airflow from each subchannel.

[0045] Of course, the connecting channel is not limited to multiple sub-channels; it can also be a single channel. In this case, the airflows separated by the connecting hole enter the connecting channel and cancel each other out. When the offset airflow flows through the outlet, it is further divided into several airflows by the outlet. Through division, confluence, and re-division, the noise energy consumption is further increased, thereby improving the noise reduction effect.

[0046] In another embodiment, the cup body can also be located within the housing. In this case, the motor and the cup body are contained as a whole by the housing, and the handle can be provided on the housing. Of course, the housing can also be the housing of a larger frame-type machine, which also includes a water tank that can be controlled by a water pump to supply water to the cup body, thereby realizing automated processing of the food processor.

[0047] The food processor of the present invention is not limited to a structure in which the motor directly drives the crushing device to rotate. The outer shell can also be a base arranged below the cup body. The crushing device in the cup body is connected to the upper coupling, and the motor is arranged in the base. The motor shaft is connected to the lower coupling. The cup body is detachably placed on the base, and the motor drives the crushing device through the docking of the upper and lower couplings.

[0048] It can be understood that the solutions of the above embodiments of the present invention are not independent and can be combined with each other.

[0049] Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

Claims

1. A food processor, comprising a cup body having a grinding chamber, a housing, and a grinding device disposed in the grinding chamber. A motor is disposed in the housing below the cup body, a fan is disposed at the rear end of the motor, and the motor drives the grinding device to rotate. An air outlet is also disposed in the housing, the air outlet comprises an air inlet end and an air outlet end, the fan of the motor is located at the air inlet end of the air outlet, an air outlet is disposed on the housing, the air outlet end and the air outlet are disposed opposite each other, and the air outlet is connected to the outside world through the air outlet. The invention is characterized in that: A blocking block for adsorbing carbon powder is provided in the air outlet channel, and the blocking block includes a windward wall, which is arranged toward the air inlet end. A connecting channel is provided in the blocking block, which passes through the blocking block and forms a plurality of connecting holes on the windward wall, wherein the total area of ​​the connecting holes is s1, the area of ​​the cross section of the air outlet channel is s2, 0.75≤s1 / s2≤0.85, the aperture of a single connecting hole is d, 1.5mm≤d≤2.5mm.

2. The food processing machine according to claim 1, characterized in that: The outer side of the motor is sleeved with an air guide cover forming an air outlet channel, the bottom of the air guide cover extends downward and abuts against the inner bottom wall of the shell, the air outlet is arranged on the bottom wall of the shell, and the blocking block is confined in the air guide cover.

3. The food processing machine according to claim 2, characterized in that: The inner wall of the air guide cover is provided with a protrusion, and the blocking block is supported by the protrusion; Alternatively, the blocking block is supported by the bottom wall of the shell.

4. The food processing machine according to claim 1, wherein: An air duct cover is arranged in the shell, and the air duct cover and the bottom wall of the shell are enclosed to form an air outlet channel, and the blocking block is limited to be located in the air outlet channel.

5. The food processing machine according to claim 4, characterized in that: The air duct cover presses the blocking block against the inner bottom wall of the shell.

6. The food processing machine according to claim 1, wherein: A limiting portion for limiting the blocking block is provided in the air outlet channel.

7. The food processing machine according to claim 6, characterized in that: The limiting portion includes a limiting hole provided on the outer wall of the blocking block and a limiting post provided in the air outlet channel, the limiting post being inserted into the limiting hole to fix the blocking block in the air outlet channel; Alternatively, the limiting portion includes a limiting protrusion provided in the air outlet channel, and the blocking block abuts against the limiting protrusion; Alternatively, the limiting portion includes a limiting groove provided in the air outlet channel, and the blocking block abuts against a groove wall of the limiting groove.

8. The food processing machine according to claim 1, wherein: The blocking block also includes an air outlet wall, which is arranged toward the air outlet end. The cross-sectional area of ​​the air outlet channel gradually increases from the air inlet end to the air outlet end. The area of ​​the air outlet wall of the blocking block is larger than the area of ​​the air inlet wall.

9. The food processing machine according to claim 1, wherein: The blocking block is formed by mixing and pressing bamboo charcoal and clay.

10. The food processor according to claim 1, wherein: The communication channel includes a plurality of sub-channels, and each sub-channel is respectively communicated with a corresponding communication hole on the windward wall.

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