Three-dimensional dough mixer capable of rapidly and uniformly controlling temperature

Abstract

The utility model discloses a three-dimensional dough mixer capable of rapidly and uniformly controlling temperature. Comprising a base, a dough kneading barrel and a dough kneading knife, the dough kneading barrel comprises an inner container and an outer cover; a flow guide cavity is formed in the outer cover, and the inner container is arranged in the flow guide cavity. The upper surface of the base is sunken to form a ventilation groove body, a ventilation gap is formed in the space between the ventilation groove body and the outer bottom face of the inner container, and a side wall cover gap is formed in the space between the outer side wall of the inner container and the inner side wall of the outer cover. The flow guide cavity further comprises a flow guide inlet and a flow guide outlet, the flow guide inlet is formed in the ventilation groove body and communicates with the ventilation gap, the flow guide outlet is formed in the top of the flow guide cavity and communicates with the side wall cover gap, and the flow guide outlet communicates with the external environment; a fan assembly is arranged in the base and comprises a first fan and a first air duct, and the air outlet end of the first fan communicates with the flow guide inlet through the first air duct and is used for conveying cold air or hot air to the flow guide cavity. According to the utility model, through the design of air guide structures such as the flow guide cavity, the rapid and uniform three-dimensional temperature control effect is realized.

Description

Technical Field

[0001] This utility model belongs to the technical field of household dough mixers, specifically relating to a three-dimensional dough mixer with rapid and uniform temperature control. Background Technology

[0002] A household dough mixer is a kitchen appliance designed specifically for home baking and pasta making, featuring both dough mixing and proofing functions. Existing household dough mixers can efficiently and evenly mix flour and liquids into a smooth dough, saving time and effort; they also have a constant temperature proofing mode to provide a suitable environment for dough fermentation and ensure thorough fermentation.

[0003] Existing household dough mixers generally include a base and a dough mixing bowl. To achieve better dough mixing and proofing functions, a heating element is usually installed on the base corresponding to the bottom of the dough mixing bowl. The heat generated by the heating element is slowly transferred from the bottom of the dough mixing bowl upwards. For example, Chinese Patent No. CN202496344U discloses a dough mixing and proofing machine, which also mentions that a heating element is placed directly below the dough mixing bowl, and the heating element is in contact with the inner surface of the base; therefore, during use, the temperature at the bottom of the dough mixing bowl is usually higher than the temperature of other parts of the dough mixing bowl.

[0004] Moreover, the technical shortcomings of this type of dough mixer are particularly apparent in cold conditions such as winter. During the dough proofing process, the dough mixer absorbs heat primarily from its bottom, while other areas (such as the sides) rapidly lose heat due to the low ambient temperature. This results in a significant temperature difference between the sides and bottom of the dough mixer, causing uneven heating of the dough in different parts of the mixer. This is detrimental to improving the proofing effect and ultimately affects the taste and quality of the final product.

[0005] In addition, existing technologies place the heating element on the side wall of the mixing bowl. While this arrangement speeds up the heating efficiency of the side wall to some extent, it creates a new problem: a temperature difference occurs at the bottom of the mixing bowl, which also fails to achieve uniform heating of the dough inside the bowl and cannot effectively improve the proofing effect. Summary of the Invention

[0006] In response to the problems in related technologies, this utility model proposes a three-dimensional dough mixer with rapid and uniform temperature control to overcome the aforementioned technical problems in existing related technologies. This utility model utilizes the characteristics of wind, adopts a three-dimensional temperature control method, and achieves rapid and uniform temperature control through the design of air guiding structures such as air guiding cavities.

[0007] The technical solution of this utility model is as follows: a three-dimensional fast and uniform temperature-controlled dough mixer includes a base, a dough mixing bowl and a dough mixing blade, wherein the dough mixing bowl is disposed on the base and the dough mixing blade is disposed inside the dough mixing bowl;

[0008] The mixing bowl includes an inner liner and an outer cover; the outer cover is placed on a base and has a flow guide cavity inside, and the inner liner is placed inside the flow guide cavity; the flow guide cavity includes a ventilation gap and a side wall cover gap that are connected to each other; the upper surface of the base is recessed to form a ventilation groove, the space between the ventilation groove and the outer bottom surface of the inner liner forms the ventilation gap, and the space between the outer side wall of the inner liner and the inner side wall of the outer cover forms the side wall cover gap;

[0009] The flow guiding cavity further includes a flow guiding inlet and a flow guiding outlet. The flow guiding inlet is located on the ventilation slot and communicates with the ventilation gap. The flow guiding outlet is located at the top of the flow guiding cavity and communicates with the side wall cover gap. The flow guiding outlet is also in communication with the external environment.

[0010] The base is provided with a fan assembly that generates cold or hot air. The fan assembly includes a first fan and a first air duct. The air outlet of the first fan is connected to the guide inlet through the first air duct, and is used to deliver cold or hot air to the guide cavity.

[0011] Cold or hot air flows into the ventilation gap from the inlet, fills the entire ventilation cavity through the ventilation gap, and then exits to the external environment through the side wall cover gap.

[0012] Furthermore, the ventilation duct has a supporting cylinder protruding from the center of its bottom surface. One side of the supporting cylinder extends toward the side wall of the ventilation duct to form a transition structure. The space between the supporting cylinder and the side wall of the ventilation duct that has not extended to form a groove surrounding the supporting cylinder. The transition structure protrudes from the bottom surface of the groove, and each of its two opposite side walls is provided with a flow guide inlet. The flow guide inlets are oriented toward the groove, and the flow guide inlets on both side walls output air toward the groove in a clockwise or counterclockwise direction, respectively.

[0013] Furthermore, the groove is C-shaped, U-shaped, or U-shaped.

[0014] Furthermore, the shape of the flow inlet includes circular, elliptical, or polygonal.

[0015] Furthermore, the first air duct includes a connecting pipe and an air outlet pipe, the air outlet end of the first fan is connected to the air outlet pipe through the connecting pipe, and one side of the air outlet pipe is connected to the guide inlet;

[0016] Furthermore, the bottom of the transition structure extends away from the ventilation slot until it engages with the top of the air outlet duct.

[0017] The fan assembly also includes a heating element and a temperature sensor. The heating element is located inside the connecting pipe, and the temperature sensor is located inside the air outlet pipe for detecting the temperature of the air.

[0018] Furthermore, a support frame and an inner liner are sequentially arranged above the support cylinder, and a rotating assembly is mounted on the support frame; the lower part of the support cylinder extends away from the ventilation slot until it is connected to the drive unit; the output shaft of the drive unit passes through the support frame, the rotating assembly, and the inner liner in sequence, and is connected to the dough kneading knife drive.

[0019] Furthermore, the drive unit includes a drive motor; the rotating assembly includes a rotary bearing and a seal, and the shaft of the drive motor passes through the rotary bearing and is sealed to the bottom of the inner liner through the seal.

[0020] Furthermore, the sidewall cover gap has an annular structure, and its radial dimension gradually decreases from bottom to top.

[0021] Furthermore, it also includes a top cover, which is detachably installed on the top of the inner liner and the outer cover; or, the top cover is hinged to the outer cover; when closed, the top cover covers the top of the inner liner and the outer cover.

[0022] Furthermore, the bottom of the top cover is provided with a flange structure extending toward the inner liner; the flange structure extends into the interior of the inner liner and is movably connected to the inner wall of the inner liner.

[0023] Furthermore, the inner wall of the inner liner is provided with an inwardly protruding locking protrusion, and the outer wall of the flange structure is provided with a locking groove, and the locking protrusion and the locking groove are connected in a cooperative manner.

[0024] Furthermore, the top of the outer cover is provided with a plurality of protrusions extending toward the top cover; when the cover is closed, the gap between the bottom of the top cover and the top of the outer cover forms the flow outlet.

[0025] Furthermore, the top of the outer cover is provided with a horizontally inwardly extending protruding edge, and the protrusion extends from the upper surface of the protruding edge toward the top cover.

[0026] The convex edge is also provided with a horizontally outward recessed notch for the air to flow out.

[0027] Furthermore, the center of the top cover extends away from the inner liner to form a handle; the handle is open and covered by a cover plate; the cover plate is detachably connected to the handle.

[0028] Furthermore, the inner wall of the outer cover is provided with multiple guide ribs extending axially from bottom to top, and the guide ribs are inclined from bottom to top.

[0029] The beneficial effects of this utility model are:

[0030] (1) First, the fan assembly generates cold or hot air and quickly delivers the air to the guide inlet using the first fan and the first air duct. The air quickly enters the ventilation gap and, utilizing the efficient flow characteristics of the air, can quickly exchange heat with the inner liner. Compared with traditional natural heat dissipation or slow heating / cooling methods, this invention can significantly shorten the temperature adjustment time of the inner liner and significantly improve the temperature control efficiency.

[0031] (2) Moreover, the design of the ventilation slots not only provides a flow channel for the airflow but also guides the airflow to be evenly distributed within the ventilation gaps. This even distribution of airflow ensures effective temperature regulation at all locations at the bottom of the inner liner. Simultaneously, the side wall hoods are connected to the ventilation gaps, allowing the airflow to enter through the ventilation gaps and flow upwards along a specific path. The structural design of the side wall hoods enables the airflow to fully exchange heat with the sides of the inner liner. The airflow can circulate around the sides of the inner liner, achieving 360-degree all-around temperature control and preventing inconsistent dough texture due to temperature differences on the sides.

[0032] (3) In addition, in different production environments, such as seasonal changes and workshop temperature differences, the dough mixer described in this utility model can control the temperature of the inner tank by adjusting the temperature of the air generated by the fan assembly, so as to ensure that the dough mixing process is not affected by the ambient temperature, ensure stable product quality, and improve the versatility and adaptability of the equipment. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a three-dimensional dough mixer with rapid and uniform temperature control according to the present invention;

[0034] Figure 2 This is a cross-sectional view of a three-dimensional dough mixer with rapid and uniform temperature control according to the present invention.

[0035] Figure 3 This is another sectional view of a three-dimensional dough mixer with rapid and uniform temperature control according to the present invention.

[0036] Figure 4 This is a schematic diagram of the dough mixer of this utility model, omitting the dough mixing bucket and top cover;

[0037] Figure 5 This is an exploded structural diagram of a three-dimensional dough mixer with rapid and uniform temperature control according to the present invention.

[0038] Figure 6 This is a cross-sectional view of the dough mixer of this utility model with some components omitted;

[0039] Figure 7 for Figure 6 Enlarged view of point A;

[0040] Figure 8This is a schematic diagram of the ventilation slot of this utility model;

[0041] Figure 9 This is a cross-sectional view of the ventilation slot of this utility model;

[0042] Figure 10 This is a schematic diagram of the structure of the fan assembly of this utility model;

[0043] Figure 11 This is a structural schematic diagram of the combination of the inner liner, dough mixer, drive unit, support frame, rotating assembly and ventilation slot of this utility model;

[0044] Figure 12 This is a cross-sectional view of the assembly of the inner liner, dough mixer, drive unit, support frame, rotating component and ventilation slot of this utility model.

[0045] Marker explanation:

[0046] 1. Base; 11. First fan; 12. Heating element; 13. Temperature sensor; 14. Connecting pipe; 15. Air outlet pipe; 2. Mixing bucket; 21. Inner liner; 211. Protrusion; 22. Outer cover; 221. Protruding edge; 222. Notch; 223. Protrusion; 224. Guide rib; 23. Flow guide cavity; 231. Flow guide inlet; 232. Flow guide outlet; 233. Ventilation gap; 234. Side wall cover gap; 3. Mixing knife; 4. Ventilation slot; 41. Support cylinder; 42. Transition structure; 43. Groove; 5. Top cover; 51. Flange structure; 511. Slot; 52. Handle; 53. Cover plate; 6. Support frame; 7. Rotary bearing; 8. Seal; 9. Drive motor; 91. Shaft. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0049] like Figure 1-3 As shown, this embodiment provides a three-dimensional, rapid, and uniformly temperature-controlled dough mixer, including a base 1, a dough mixing bowl 2, and a dough mixing blade 3. The dough mixing bowl 2 is disposed on the base 1, and the dough mixing blade 3 is disposed inside the dough mixing bowl 2.

[0050] The mixing bucket 2 includes an inner liner 21 and an outer cover 22; the outer cover 22 is placed on a base 1 and has a flow guide cavity 23 inside, and the inner liner 21 is placed inside the flow guide cavity 23; the flow guide cavity 23 includes a ventilation gap 233 and a side wall cover gap 234 that are connected to each other; the upper surface of the base 1 is recessed to form a ventilation groove 4, the space between the ventilation groove 4 and the outer bottom surface of the inner liner 21 forms the ventilation gap 233, and the space between the outer side wall of the inner liner 21 and the inner side wall of the outer cover 22 forms the side wall cover gap 234;

[0051] like Figure 7-9 As shown, the flow guiding cavity 23 also includes a flow guiding inlet 231 and a flow guiding outlet 232. The flow guiding inlet 231 is located on the ventilation slot 4 and communicates with the ventilation gap 233. The flow guiding outlet 232 is located at the top of the flow guiding cavity 23 and communicates with the side wall cover gap 234. The flow guiding outlet 232 is also in communication with the external environment.

[0052] like Figure 10 As shown, the base 1 is provided with a fan assembly that generates cold or hot air. The fan assembly includes a first fan 11 and a first air duct. The air outlet of the first fan 11 is connected to the guide inlet 231 through the first air duct, and is used to deliver cold or hot air to the guide cavity 23.

[0053] like Figure 3 , Figure 4 and Figure 6 As shown, cold or hot air flows into the ventilation gap 233 from the guide inlet 231, fills the entire guide cavity 23 after passing through the ventilation gap 233, and is then discharged to the external environment from the guide outlet 232 after passing through the side wall cover gap 234.

[0054] First, the fan assembly generates cold or hot air, which is quickly delivered to the air inlet 231 via the first fan 11 and the first air duct. The air then rapidly enters the ventilation gap 233, utilizing the efficient flow characteristics of air to quickly exchange heat with the inner liner 21. During the dough fermentation stage, if the temperature is too high, the cold air can quickly lower the temperature to prevent over-fermentation; if the temperature is too low, the hot air can promptly raise the temperature to ensure normal fermentation and keep the dough in optimal condition. Compared to traditional natural heat dissipation or slow heating / cooling methods, this design significantly shortens the temperature adjustment time of the inner liner 21 and significantly improves temperature control efficiency.

[0055] Secondly, the ventilation groove 4 formed by the recess on the upper surface of the base 1 and the outer bottom surface of the inner liner 21 form a ventilation gap 233, and the airflow acts directly on the bottom of the inner liner 21 through the guide inlet 231. When the dough is kneaded, it will make full contact with the bottom of the inner liner 21. This design can effectively dissipate heat or heat the bottom.

[0056] Secondly, the side wall gap 234 between the outer wall of the inner liner 21 and the inner wall of the outer cover 22 allows the airflow to circulate around the side of the inner liner 21 after filling the side wall gap 234, achieving 360-degree all-round temperature control of the side of the inner liner 21. During the kneading process, the dough will roll in the kneading bowl 2. Side temperature control can ensure that the temperature of all parts of the dough is uniform, avoiding inconsistent dough texture due to side temperature differences and improving the quality of kneading.

[0057] Furthermore, the design of the ventilation slot 4 not only provides a flow channel for the airflow but also guides the airflow to be evenly distributed within the ventilation gap 233. This evenly distributed airflow ensures effective temperature regulation at all locations at the bottom of the inner liner 21, providing a stable bottom temperature environment for the dough. Simultaneously, the side wall hood gap 234 is connected to the ventilation gap 233. After entering the side wall hood gap 234 from the ventilation gap 233, the airflow flows upward along a specific path. The structural design of the side wall hood gap 234 allows for sufficient heat exchange between the airflow and the side of the inner liner 21, and the airflow is evenly discharged from the guide outlet 232, avoiding dead zones or eddies during airflow and ensuring smooth and uniform airflow throughout the guide cavity 23.

[0058] In different production environments, such as seasonal changes and workshop temperature differences, the dough mixer described in this embodiment can control the temperature of the inner tank 21 by adjusting the temperature of the air generated by the fan assembly, ensuring that the dough mixing process is not affected by the ambient temperature, guaranteeing stable product quality, and improving the versatility and adaptability of the equipment.

[0059] like Figure 8-9As shown, the ventilation duct 4 has a supporting cylinder 41 protruding from the middle of its bottom surface. One side of the supporting cylinder 41 extends toward the side wall of the ventilation duct 4 to form a transition structure 42. The space between the supporting cylinder 41 and the side wall of the ventilation duct 4 that has not been extended forms a groove 43 surrounding the supporting cylinder 41. The transition structure 42 protrudes from the bottom surface of the groove 43, and each of its two opposite side walls is provided with a guide inlet 231. The guide inlets 231 are oriented toward the groove 43, and the guide inlets 231 on the two side walls output air toward the groove 43 in a clockwise or counterclockwise direction, respectively.

[0060] Specifically, the groove 43 is C-shaped, U-shaped, or U-shaped.

[0061] Specifically, the shape of the flow inlet 231 includes circular, elliptical, or polygonal shapes.

[0062] like Figure 10 As shown, the first air duct includes a connecting pipe 14 and an air outlet pipe 15. The air outlet end of the first fan 11 is connected to the air outlet pipe 15 through the connecting pipe 14. One side of the air outlet pipe 15 is connected to the flow guide inlet 231.

[0063] More specifically, such as Figure 3 and Figure 9 As shown, the bottom of the transition structure 42 extends away from the ventilation slot 4 until it engages with the top of the air outlet duct 15.

[0064] like Figure 10 As shown, the fan assembly also includes a heating element 12 and a temperature sensor 13. The heating element 12 is located inside the connecting pipe 14, and the temperature sensor 13 is located inside the air outlet pipe 15 for detecting the temperature of the air.

[0065] like Figure 12 As shown, a support frame 6 and an inner liner 21 are sequentially arranged above the support cylinder 41, and a rotating assembly is mounted on the support frame 6; the lower part of the support cylinder 41 extends away from the ventilation slot 4 until it is connected to the drive unit; the output shaft of the drive unit passes through the support frame 6, the rotating assembly, and the inner liner 21 in sequence, and is connected to the dough knives 3 in a transmission connection.

[0066] Specifically, the drive unit includes a drive motor 9; the rotating assembly includes a rotating shaft 91 bearing and a seal 8, wherein the rotating shaft 91 of the drive motor 9 passes through the rotating shaft 91 bearing and is sealed to the bottom of the inner liner 21 through the seal 8.

[0067] Specifically, the sidewall cover gap 234 has an annular structure, and its radial dimension gradually decreases from bottom to top, so that the sidewall cover gap 234 forms a shape that is wider at the top and narrower at the bottom in the vertical direction. The gradually decreasing radial dimension can guide the wind to flow upward quickly along a specific path, reduce the eddy phenomenon of the wind, reduce energy loss, and improve the smoothness and efficiency of the wind flow.

[0068] like Figure 5 and Figure 11 As shown, it also includes a top cover 5, which is detachably installed on the top of the inner liner 21 and the outer cover 22; or, the top cover 5 is hinged to the outer cover 22; when the cover is closed, the top cover 5 covers the top of the inner liner 21 and the outer cover 22.

[0069] Specifically, the bottom of the top cover 5 is provided with a flange structure 51 extending toward the inner liner 21; the flange structure 51 extends into the interior of the inner liner 21 and is movably connected to the inner wall of the inner liner 21.

[0070] More specifically, the inner wall of the inner liner 21 is provided with an inwardly protruding locking protrusion 211, and the outer wall of the flange structure 51 is provided with a locking groove 511. The locking protrusion 211 and the locking groove 511 are engaged and connected. By rotating the top cover 5, the locking protrusion 211 and the locking groove 511 are engaged, thereby locking the top cover 5.

[0071] Specifically, the top of the outer cover 22 is provided with a plurality of protrusions 223 extending toward the top cover 5; when the cover is closed, the gap between the bottom of the top cover 5 and the top of the outer cover 22 forms the flow outlet 232.

[0072] Specifically, the top of the outer cover 22 is provided with a horizontally inwardly extending protruding edge 221, and the protrusion 223 extends from the upper surface of the protruding edge 221 toward the top cover 5.

[0073] The protruding edge 221 is also provided with a horizontally outward recessed notch 222 for allowing air to flow out;

[0074] The protruding edge 221, while ensuring that the airflow can pass through the opening 222, also acts as a barrier to the airflow. This barrier is not completely closed, but rather guides and controls the airflow direction through the reasonable design of the shape and size of the protruding edge 221. On the one hand, the protruding edge 221 can slow down the rate at which the airflow from the top of the side wall cover gap 234 flows to the external environment, thus prolonging the residence time of the airflow inside the device and increasing the contact time between the airflow and the inner liner 21, thereby ensuring uniform temperature on the inner liner 21.

[0075] Specifically, the middle part of the top cover 5 extends away from the inner liner 21 to form a handle 52; the handle 52 is open and is covered by a cover plate 53; the cover plate 53 is detachably connected to the handle 52.

[0076] More specifically, the inner wall of the outer cover 22 is provided with a plurality of guide ribs 224 extending axially from bottom to top. The guide ribs 224 are inclined from bottom to top, so that the inner wall of the outer cover 22 can form an interference fit connection with the outer wall of the ventilation slot 4.

[0077] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A three-dimensional, rapid, and uniformly temperature-controlled dough mixer, comprising a base, a dough mixing bowl, and a dough mixing blade, wherein the dough mixing bowl is disposed on the base, and the dough mixing blade is disposed inside the dough mixing bowl, characterized in that: The mixing bowl includes an inner liner and an outer cover; the outer cover is placed on a base and has a flow guide cavity inside, and the inner liner is placed inside the flow guide cavity; the flow guide cavity includes a ventilation gap and a side wall cover gap that are connected to each other; the upper surface of the base is recessed to form a ventilation groove, the space between the ventilation groove and the outer bottom surface of the inner liner forms the ventilation gap, and the space between the outer side wall of the inner liner and the inner side wall of the outer cover forms the side wall cover gap; The flow guiding cavity further includes a flow guiding inlet and a flow guiding outlet. The flow guiding inlet is located on the ventilation slot and communicates with the ventilation gap. The flow guiding outlet is located at the top of the flow guiding cavity and communicates with the side wall cover gap. The flow guiding outlet is also in communication with the external environment. The base is equipped with a fan assembly that generates cold or hot air. The fan assembly includes a first fan and a first air duct. The air outlet of the first fan is connected to the flow guide inlet through the first air duct, and is used to deliver cold or hot air to the flow guide cavity.

2. A dough mixer according to claim 1, characterised in that The ventilation duct has a supporting cylinder protruding from the center of its bottom surface. One side of the supporting cylinder extends toward the side wall of the ventilation duct to form a transition structure. The space between the supporting cylinder and the side wall of the ventilation duct that has not extended to form a groove surrounding the supporting cylinder. The transition structure protrudes from the bottom surface of the groove, and each of its two opposite side walls is provided with a flow guide inlet. The flow guide inlets are oriented toward the groove, and the flow guide inlets on both side walls output air toward the groove in a clockwise or counterclockwise direction, respectively.

3. A dough mixer according to claim 1 or 2, characterised in that, The first air duct includes a connecting pipe and an air outlet pipe. The air outlet end of the first fan is connected to the air outlet pipe through the connecting pipe, and one side of the air outlet pipe is connected to the flow guide inlet. The fan assembly also includes a heating element and a temperature sensor. The heating element is located inside the connecting pipe, and the temperature sensor is located inside the air outlet pipe for detecting the temperature of the air.

4. The dough mixer of claim 2, wherein A support frame and an inner liner are sequentially arranged above the support cylinder, and a rotating assembly is mounted on the support frame; the lower part of the support cylinder extends away from the ventilation slot until it is connected to the drive unit; the output shaft of the drive unit passes through the support frame, the rotating assembly, and the inner liner in sequence, and is connected to the dough kneading knife drive.

5. A dough mixer according to claim 4, characterised in that The drive unit includes a drive motor; the rotating assembly includes a rotary bearing and a seal, and the shaft of the drive motor passes through the rotary bearing and is sealed to the bottom of the inner liner through the seal.

6. The dough mixer of claim 1, wherein The sidewall cover gap has an annular structure, and its radial dimension gradually decreases from bottom to top.

7. The dough mixer of claim 1, wherein It also includes a top cover, which is detachably mounted on the top of the inner liner and the outer cover; or, the top cover is hinged to the outer cover; when closed, the top cover covers the top of the inner liner and the outer cover.

8. A dough mixer according to claim 7, characterised in that The bottom of the top cover is provided with a flange structure extending toward the inner liner; the flange structure extends into the interior of the inner liner and is movably connected to the inner sidewall of the inner liner.

9. The dough mixer of claim 7, wherein The top of the outer cover is provided with a plurality of protrusions extending toward the top cover; when the cover is closed, the gap between the bottom of the top cover and the top of the outer cover forms the flow outlet.

10. A dough mixer according to claim 9, characterised in that The top of the outer cover is provided with a horizontally inwardly extending protruding edge, and the protrusion extends from the upper surface of the protruding edge toward the top cover. The convex edge is also provided with a horizontally outward recessed notch for the air to flow out.

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