Crushing power assembly and food processor

Abstract

The utility model discloses a smashing power assembly and a food processor, and relates to the field of life electric appliances, the smashing power assembly comprises a heating disc and a brushless motor arranged below the heating disc, the brushless motor comprises a motor main body and a motor lower shell arranged on the outer side of the motor main body, the motor lower shell is fixedly connected with the heating disc so that the motor main body can be fixed between the motor lower shell and the heating disc, the top end of a motor shaft of the motor main body is fixedly connected with a smashing cutter, the smashing power assembly comprises a connecting piece, and the connecting piece penetrates through the motor lower shell and is directly fixed to the heating disc. The food processor comprises a main machine and a smashing cup, the smashing cup comprises the smashing power assembly, the heating disc forms the bottom of the smashing cup, the weight of the whole machine is reduced, meanwhile, the axial height of the smashing power assembly is compressed, and therefore the axial height of the whole machine is lower and thinner.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, in particular to a crushing power component and a food processing machine. Background Art

[0002] With the development of society and the improvement of living standards, people's pursuit of dietary diversity and healthy diet is constantly increasing. As a result, various industrial food processing machines have gradually become smaller and entered thousands of households. For example, soymilk machines not only meet people's demand for healthy and nutritious diets, but also greatly improve people's quality of life, and are therefore popular among people.

[0003] Existing food processors usually include a main unit and a crushing cup with a built-in stirring element. For example, Chinese utility model patent CN208740776U discloses a new electromagnetic heating wall-breaking machine, which includes a cup body and a base. The bottom of the cup body is detachably connected to the top of the base. The bottom of the cup body is provided with a crushing knife assembly, and the top of the base is provided with a heating assembly. The interior of the base is provided with a drive motor for driving the crushing knife assembly. The transmission between the drive motor and the crushing knife requires transmission components to be realized, that is, the top of the motor shaft of the drive motor disclosed in the patent is provided with a first drive connecting member, and the bottom of the crushing knife is provided with a second drive connecting member that cooperates with the first drive connecting member. This transmission method will cause noise between the transmission components due to transmission collision or vibration, and will cause energy loss during the transmission process, and the transmission efficiency of the whole machine is low.

[0004] For example, Chinese utility model patent CN217720848U discloses a food processing machine with a series-wound motor, which includes a main unit and a series-wound motor arranged in the main unit. The series-wound motor includes a stator and a rotor having a rotor shaft. In order to fix the series-wound motor, the patent provides a motor bracket to fix the series-wound motor in the main unit, and the motor bracket includes a front bracket and a rear bracket located at both ends of the stator core, and two oppositely arranged isolation brackets are respectively provided on the front bracket and the rear bracket.

[0005] Another food processing machine, such as Chinese utility model patent CN111493695A, discloses a wall breaking machine, which includes a machine base and a machine body, a receiving cavity is provided on the machine base, the machine body is detachably provided on the receiving cavity, a first electrical connector is provided at the bottom of the receiving cavity, the machine body includes a cup cover, a cup body, a cup base, a motor, a cutter, a heating plate assembly and a second electrical connector, that is, the motor is directly installed in the cup body assembly so that it can be detached from the main machine together with the cup body assembly. If the series motor in CN217720848U is applied In this solution, the overall weight and volume of the series-excited motor will result in a larger weight and space occupied by the cup assembly. It will be very strenuous for users to pick up the entire cup assembly, and it will be very inconvenient to store it. In addition, the motor bracket is fixed to the main unit through the front bracket and the rear bracket, which further increases the weight of the entire machine and causes the axial height of the entire machine to be too high, thereby increasing the center of gravity of the entire machine. As a result, the food processor will shake or even fall over due to the high center of gravity when processing ingredients, seriously affecting the consumer experience. Utility Model Content

[0006] The purpose of the utility model is to provide a crushing power assembly and a food processor to solve the problems of low transmission efficiency between the motor and the crushing blade of the existing food processor, high resonance noise, and uneven force between the motor shaft and the shaft seal causing shaft seal leakage.

[0007] To achieve the above-mentioned purpose, the present invention provides a crushing power assembly, comprising a heating plate and a brushless motor arranged below the heating plate, the heating plate being used to form the bottom of a crushing cup of a food processor, the brushless motor comprising a motor body and a motor lower shell arranged outside the motor body, the motor lower shell being fixedly connected to the heating plate to fix the motor body between the motor lower shell and the heating plate, the top end of the motor shaft of the motor body being fixedly connected to a crushing knife, the crushing power assembly comprising a connecting piece, the connecting piece passing through the motor lower shell and being directly fixed to the heating plate.

[0008] Furthermore, the motor body includes a stator assembly and a rotor assembly, the motor lower shell includes a bearing portion abutting against the lower end of the stator assembly and a connecting portion connected to the heating plate, and the connecting member is directly fixed to the heating plate through the connecting portion.

[0009] Furthermore, a mounting post is provided at the bottom of the heating plate, a threaded hole is provided in the mounting post, and a through hole is provided in the connecting portion. The connecting piece passes through the through hole and the threaded hole in sequence, and is locked and fixed to the heating plate through the threaded hole. The connecting piece does not contact the stator assembly.

[0010] Furthermore, a mounting baffle is provided at the bottom of the heating plate, and the mounting baffle is provided with an abutting portion, and the abutting portion and the bearing portion abut against the upper end and the lower end of the stator assembly respectively to clamp the stator assembly between the heating plate and the lower shell of the motor.

[0011] Furthermore, the stator assembly includes a stator core and a coil, the bearing portion includes a lower positioning step arranged on the inner wall of the lower shell of the motor, and the abutting portion includes an upper positioning step arranged on the inner side of the mounting baffle, the upper end face of the stator core abuts against the step end face of the upper positioning step, and the lower end face of the stator core abuts against the step end face of the lower positioning step.

[0012] Furthermore, the stator assembly includes a stator core and a coil, the outer side surface of the stator core is provided with a positioning protrusion, and the mounting baffle and the motor lower shell are provided with a positioning groove that cooperates with the positioning protrusion.

[0013] Furthermore, the step side surface of the upper positioning step and the step side surface of the lower positioning step respectively cooperate with the upper portion of the outer side surface of the stator core and the lower portion of the outer side surface of the stator core.

[0014] Furthermore, the rotor assembly includes a rotor, the motor shaft rotating with the rotor, an upper bearing and a lower bearing arranged on the motor shaft, a through hole for the motor shaft to pass through and an upper bearing mounting cavity for installing the upper bearing are provided in the middle of the heating plate, and a lower bearing mounting cavity for installing the lower bearing is provided in the middle of the motor lower shell, the inner top surface of the upper bearing mounting cavity and the inner bottom surface of the lower bearing mounting cavity are respectively abutted against the upper end surface of the upper bearing and the lower end surface of the lower bearing to clamp the rotor assembly between the heating plate and the motor lower shell.

[0015] Furthermore, an upper gasket is provided between the inner top surface of the upper bearing installation cavity and the upper end surface of the upper bearing, and a lower gasket is provided between the inner bottom surface of the lower bearing installation cavity and the lower end surface of the lower bearing.

[0016] Furthermore, the utility model also provides a food processing machine, including a main unit and a crushing cup, wherein the crushing cup is detachably connected to the main unit, the crushing cup includes the crushing power assembly, the heating plate constitutes the bottom of the crushing cup, and the crushing knife is located in the crushing cup.

[0017] The beneficial effects of the utility model are:

[0018] The connector of the pulverizing power assembly passes directly through the lower housing of the motor and is directly fixed to the heating plate, simplifying the installation of the motor body and preventing the vibration of the motor body from being directly transmitted upward through the connector to the heating plate and then to the pulverizing blade, which would cause the pulverizing blade to resonate and make loud noise during pulverizing operation. Furthermore, once the brushless motor is installed, the pulverizing blade on the motor shaft is aligned with the motor body and installed in place, minimizing the coaxial deviation between the pulverizing blade, the stator assembly of the motor body, and the rotor assembly of the motor body. This ensures more uniform circumferential and radial forces on the shaft seal between the motor shaft and the heating plate, extending the service life of the shaft seal and the overall service life of the pulverizing power assembly, improving the pulverizing performance and stability of the pulverizing power assembly, and reducing transmission resonance and noise. The pulverizing cup of a food processor using this pulverizing power assembly significantly reduces vibration and noise, improves the rotational stability of the motor body's rotor assembly, and thus improves the pulverizing performance of the pulverizing blade. The outer dimensions of the motor body's stator assembly are also reduced, making it easier to securely install the motor body and making the pulverizing cup more lightweight.

[0019] The connecting piece passes through the through hole and the threaded hole in sequence, and is locked and fixed to the heating plate through the threaded hole, and the connecting piece does not contact the stator assembly. The stator core in the stator assembly generally includes a plurality of laminations. Due to the superposition of the dimensional consistency deviation of the laminations themselves and the dimensional deviation generated by the assembly of the plurality of laminations, the radial dimensional deviation of the stator assembly is large. The connecting piece does not contact the stator assembly, which can eliminate the radial positioning deviation between the heating plate, the motor shaft and the motor lower shell caused by the large radial dimensional deviation of the stator assembly, thereby improving the coaxiality between the motor shaft of the motor body and the heating plate and the motor lower shell. In particular, when the connecting piece is rigidly connected to the motor lower shell and the heating plate respectively, it can also effectively prevent the motor body from directly transmitting vibration to the heating plate through the connecting piece, effectively reducing the resonance noise between the heating plate, the motor body and the motor lower shell, thereby reducing the overall noise of the crushing power assembly and making the transmission more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 This is an exploded view of the food processing machine in Example 1 of the present invention.

[0022] Figure 2 This is a cross-sectional view of the food processing machine in Example 1 of the present invention.

[0023] Figure 3This is an exploded view of the grinding cup, base and other components in Example 1 of the present utility model.

[0024] Figure 4 This is a further exploded view of the grinding cup, base and other components in the first embodiment of the present invention.

[0025] Figure 5 This is a structural diagram of another brushless motor in Example 1 of the present utility model.

[0026] Figure 6 This is an exploded view of another brushless motor in Example 1 of the present invention.

[0027] Figure 7 This is a cross-sectional view of another food processing machine in the first embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the structure of the grinding cup of the food processor in the second embodiment of the present invention.

[0029] Figure 9 This is a schematic diagram of the structure of the crushing power component in the second embodiment of the present utility model.

[0030] Figure 10 This is a schematic diagram of the heating disk shell structure in Example 2 of the present utility model.

[0031] Figure 11 This is a schematic diagram of the lower housing structure of the motor in the second embodiment of the present utility model.

[0032] Figure 12 This is a schematic diagram of the stator core structure in Example 2 of the present utility model.

[0033] Description of reference numerals:

[0034] 1-main unit; 2-crushing cup; 3-base; 4-heating plate; 5-stirring element; 6-brushless motor, 61-motor body, 611-stator assembly, 6111-fixing part, 6112-terminal, 612-rotor assembly, 62-motor lower shell, 621-bearing part, 622-connecting part, 623-through hole; 7-control module; 8-fan; 9-crushing knife; 10-connecting piece; 11-mounting column; 12-threaded hole; 13-through hole; 14-mounting baffle; 15-abutment part; 16-lower positioning step; 17-upper positioning step; 18-step end face; 19-step side face; 20-stator core; 21-positioning protrusion; 22-positioning groove; 23-motor shaft; 24-upper bearing; 25-lower bearing; 26-upper bearing mounting cavity; 27-lower bearing mounting cavity; 28, upper gasket; 29, lower gasket. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0036] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific implementation methods disclosed below.

[0037] Example 1

[0038] like Figures 1 to 6 As shown, the utility model provides a food processing machine that is easy to use, including a main body 1 with a grinding cup 2 having a built-in stirring member 5, a heating plate 4 is provided below the grinding cup 2, and a brushless motor 6 is also provided below the heating plate 4, the brushless motor 6 includes a motor body 61 and a motor lower shell 62 provided on the outside of the bottom of the motor body 61, the motor lower shell 62 is fixedly connected to the heating plate 4 to fix the motor body 61 between the motor lower shell 62 and the heating plate 4, and the top end of the motor shaft of the motor body 61 is fixedly connected to the stirring member 5.

[0039] The present application sets a heating plate 4 under the grinding cup 2, so that when the user needs to heat the ingredients in the grinding cup 2 when using the food processor to process ingredients, the user can control the heating plate 4 to generate heat to heat the ingredients in the grinding cup 2, thereby improving the temperature and taste of the output ingredients. At the same time, the heated ingredients are easier to stir and process, which helps to improve the processing efficiency of the ingredients and meet the user's needs.

[0040] At the same time, a brushless motor 6 is also provided below the heating plate 4. Due to the characteristics of the brushless motor 6, when the user uses the food processor to process food, the motor's rotational noise is lower, achieving a noise reduction effect. The brushless motor 6 can also achieve variable frequency control, allowing the food processor to control the brushless motor 6 to output different speeds according to different food ingredients and the processing process. This can achieve better and more complete processing of food ingredients, improving the taste of the finished food. Furthermore, the brushless motor 6 occupies a small space, which helps to improve the compactness of the entire machine's internal structure, reduce the space occupied by the food processor, and facilitate storage. Moreover, compared to traditional brushed motors with the same output performance, the brushless motor 6's high power density can reduce the motor's weight by 30%. Even using high-grade rare earth magnets can reduce the weight by more than 40%, effectively reducing the weight of the entire machine, making it easier to handle and operate, and making it easier for users to move and clean the food processor, thereby improving the user experience.

[0041] Furthermore, the top end of the motor shaft of the motor body 61 is fixedly connected to the stirring member 5, so that the motor shaft can be directly connected to the stirring member 5 and thus directly drive the stirring member 5, eliminating the need for separate transmission components such as couplings, etc., which not only improves the transmission efficiency of the motor, but also reduces the noise generated by transmission collision or vibration between the components, and reduces the number of parts of the whole machine, making the internal structure more compact, and further reducing the weight of the whole machine, making it easier for users to pick up and operate. It should be noted that this application does not specifically limit the relative relationship between the brushless motor 6 and the crushing cup 2. It can be that the brushless motor 6 is arranged laterally relative to the crushing cup 2 in the axial direction, and the transmission of the motor shaft is achieved through transmission components such as gears, etc., which will not be repeated here.

[0042] In addition, the motor lower shell 62 is fixedly connected to the heating plate 4 to fix the motor body 61 between the motor lower shell 62 and the heating plate 4. On the one hand, it eliminates the need to arrange an outer shell outside the motor body 61 and then fix the entire motor in the base 3 through the motor bracket, which greatly simplifies the number of parts of the entire motor and the entire machine, and helps to further improve the compactness of the internal structure of the whole machine and further reduce the overall weight; on the other hand, compared with the traditional method of fixing the motor in the base 3 through the upper motor bracket and the lower motor bracket, the entire motor body 61 and the heating plate 4 can be fixed by only one motor lower shell 62, which further reduces the number of parts and at the same time compresses the axial height of the integrated assembly of the brushless motor 6 and the heating plate 4, thereby making the axial height of the whole machine lower and thinner, further reducing the occupied space of the food processor, and at the same time reducing the center of gravity height of the whole machine, making the food processor more stable when working.

[0043] It should be noted that the present application does not specifically limit the structure of the motor lower housing 62, which may be any one of the following embodiments:

[0044] Example 1: Figure 3 、 Figure 4 As shown, the motor body 61 includes a stator assembly 611 and a rotor assembly 612 rotatably disposed in the stator assembly 611 , and the motor lower shell 62 includes a bearing portion 621 abutting against the bottom end of the stator assembly 611 and a connecting portion 622 connected to the heating plate 4 .

[0045] By setting the motor lower shell 62 to include a bearing portion 621 abutting the bottom end of the stator assembly 611 and a connecting portion 622 connected to the heating plate 4, the entire motor body 61 is clamped and fixed between the bearing portion 621 and the heating plate 4, which helps to improve the stability of the motor body 61, and the motor lower shell 62 does not need to limit the side wall of the stator assembly 611. It not only further simplifies the structure of the motor lower shell 62 and reduces its occupied space and weight, but also increases the heat dissipation area of the motor body 61 and the heat dissipation effect of the brushless motor 6, and avoids the situation where the motor lower shell 62 fully wraps the stator assembly 611, resulting in poor heat dissipation effect of the brushless motor 6, causing the brushless motor 6 to have a significant temperature rise, and the internal components are seriously aged by heat, which helps to extend the service life of components such as the brushless motor 6.

[0046] Furthermore, if Figure 3 、 Figure 4 As shown, the stator assembly 611 includes a stator coil and a stator shell. The outer wall of the stator shell is provided with a fixing portion 6111 aligned with the connecting portion 622. The food processor also includes a connecting piece, which passes through the connecting portion 622 and the fixing portion 6111 in sequence and is fixed to the heating plate 4.

[0047] By providing a fixing portion 6111 aligned with the connecting portion 622 on the outer wall of the stator housing, and the food processor also including a connecting piece, the connecting piece passes through the connecting portion 622 and the fixing portion 6111 in sequence and is fixed to the heating plate 4, so that the three components are fixedly connected after the connecting piece passes through the connecting portion 622 and the fixing portion 6111 and is fixed to the heating plate 4. On the one hand, after the connecting piece passes through the fixing portion 6111, the radial and circumferential limitation of the stator assembly 611 can be achieved, thereby improving the positional stability of the stator assembly 611 and the entire motor body 61, and avoiding the circumferential or radial movement of the stator assembly 611 during operation of the brushless motor 6, resulting in unstable rotation or even inability to work; on the other hand, one connecting piece can fix the stator housing, the motor body 61 and the heating plate 4, which helps to improve the coaxiality of the three, thereby ensuring the rotation stability of the brushless motor 6, and can improve assembly efficiency and shorten assembly time.

[0048] Specifically, if Figure 3 、 Figure 4 As shown, the connecting portion 622 is a protrusion provided on the outer periphery of the bearing portion 621, and a through hole is provided on the protrusion. At the same time, the fixing portion 6111 is a protrusion provided on the outer wall of the stator shell and extending axially. A through hole is provided in the protrusion extending up and down. The heating plate 4 is provided with a downwardly extending mounting column, and a threaded hole is provided in the mounting column. The connecting piece is preferably a bolt, which passes through the through hole on the protrusion and the through hole on the protrusion in turn and is locked in the threaded hole to realize the fixed connection between the motor lower shell 62, the motor body 61 and the heating plate 4.

[0049] Example 2: Figure 5 、 Figure 6 As shown, in this embodiment, the motor body 61 includes a stator assembly 611 and a rotor assembly 612 rotatably disposed in the stator assembly 611 , and the motor lower shell 62 is a plastic package sealed around the outside of the stator assembly 611 .

[0050] By setting the motor lower shell 62 as a plastic package that is sealed and wrapped around the outside of the stator assembly 611, not only can the motor body 61 be fixed through the connection between the motor lower shell 62 and the heating plate 4, but the stator assembly 611 can also be sealed, so that the stator assembly 611 is not exposed. At the same time, the rotor assembly 612 has no live parts, so that the user can spray a small amount of water on the brushless motor 6 when cleaning the entire machine without causing internal insulation failure of the brushless motor 6, thereby improving the waterproofness of the brushless motor 6, protecting the brushless motor 6, improving product and user safety, and helping to extend the service life of the brushless motor 6.

[0051] Furthermore, if Figure 5 、 Figure 6 As shown, the stator coil in the stator assembly 611 is connected to the power line through the terminal 6112 , and the plastic package is provided with a through hole 623 for the terminal 6112 to pass through, and a sealing member is provided between the through hole 623 and the terminal 6112 .

[0052] By providing a through hole 623 for the terminal 6112 to pass through in the plastic package, and providing a seal between the through hole 623 and the terminal 6112, a seal is achieved between the through hole 623 and the terminal 6112, thereby preventing external cleaning water from flowing into the interior of the motor body 61, especially the stator coil, through the gap between the through hole 623 and the terminal 6112 when the user cleans the entire machine, thereby preventing the brushless motor 6 from short-circuiting or even being damaged. This further improves the waterproof performance of the brushless motor 6 and the protection of the brushless motor 6.

[0053] It should be noted that this application does not specifically limit the structure of the food processor. Figure 7 As shown, it can be provided with a mounting cavity in the main unit 1, and the grinding cup 2, the heating plate 4 and the brushless motor 6 are all accommodated in the mounting cavity. It can also be used as a preferred embodiment of the present application, such as Figure 2 As shown, the food processor also includes a base 3 connected to the bottom of the grinding cup 2 and detachably arranged on the main body 1. The main body 1 is provided with a control module 7 and a lower coupler electrically connected to the control module 7. The base 3 is also provided with an upper coupler electrically connected to the brushless motor 6 and the heating plate 4 and can be coupled with the lower coupler.

[0054] By providing a control module 7 within the main unit 1, the user can control the operation of the entire machine through the control module 7, thereby achieving control of the brushless motor 6 and the heating plate 4, meeting the user's usage needs. At the same time, compared with the traditional method of installing the control module 7 and other components on the base 3, the weight of the grinding cup 2 and the base 3 is further reduced, making it more convenient for the user to take the grinding cup 2. Moreover, when the user cleans the grinding cup 2, the cleaning water will not splash onto the control module 7, causing the control module 7 and other electrical components to become damp and short-circuit or even damage. This protects the control module 7 and helps to extend the service life of the entire machine.

[0055] Further, if Figure 2 As shown, the main body 1 and the base 3 are further provided with a heat dissipation channel communicating with each other, and the food processor further includes a fan 8 provided in the heat dissipation channel.

[0056] Since the main unit 1 and the base 3 are provided with interconnected heat dissipation channels, and the food processor also includes a fan 8 arranged in the heat dissipation channel, when the food processor is in use, the fan 8 can drive the air flow in the heat dissipation channel, so that the external cold air passes into the heat dissipation channel, thereby achieving heat dissipation of the components in the heat dissipation channel, avoiding the situation where the internal components have poor heat dissipation effect and the temperature is too high for a long time, causing serious aging, which helps to extend the service life of each component.

[0057] Moreover, the heat dissipation channel in the main unit 1 is interconnected with the heat dissipation channel in the base 3, which greatly improves the heat dissipation efficiency. Preferably, only one fan 8 can be set in the heat dissipation channel to realize the flow of air in the heat dissipation channel and realize the overall heat dissipation of the entire food processor. Compared with the method of setting fans 8 in both the base 3 and the main unit 1, the number of parts is greatly simplified. One fan 8 can realize the heat dissipation of the entire machine, which helps to further reduce the weight of the entire machine and is convenient for users to take and store.

[0058] It should be noted that the present application does not specifically limit the configuration of the fan 8, which may be any one of the following embodiments:

[0059] Example 1: Figure 2 As shown, in this embodiment, the fan 8 is located in the base 3 and is drivingly connected to the bottom end of the motor shaft.

[0060] By setting the fan 8 to be located inside the base 3 and connected to the bottom end of the motor shaft, the brushless motor 6 can synchronously drive the fan 8 to rotate when working, thereby realizing the flow of air in the entire heat dissipation channel and achieving heat dissipation of various components. At the same time, the motor shaft directly drives the fan 8, eliminating the structure of a separate transmission component, which helps to improve the transmission efficiency of the fan 8, while further reducing the number of components and reducing the weight of the entire machine.

[0061] Embodiment 2: In this embodiment, the fan 8 is located in the main unit 1, the bottom end of the motor shaft is connected to an upper coupling, and the fan 8 is provided with a lower coupling that can be connected to the upper coupling.

[0062] By setting the fan 8 to be located inside the main unit 1, the bottom end of the motor shaft is connected to the upper coupling, and the fan 8 is provided with a lower coupling that can be connected to the upper coupling, so that when the crushing cup 2 and the base 3 are installed on the main unit 1, the upper coupling and the lower coupling are driven to cooperate to achieve a transmission connection, and the fan 8 is arranged inside the main unit 1, which further reduces the weight of the crushing cup 2 and the base 3, thereby further facilitating the user to take the crushing cup 2 and the base 3.

[0063] Example 3: In this example, the fan 8 is located in the host 1, and a driving motor for driving the fan 8 to rotate is also provided in the host 1.

[0064] By arranging the fan 8 to be located inside the main unit 1, and also providing a drive motor inside the main unit 1 to drive the fan 8 to rotate, the fan 8 is driven by a separate drive motor, eliminating the need for transmission components to achieve a transmission connection between the brushless motor 6 and the fan 8, further simplifying the components inside the grinding cup 2 and the base 3, and further reducing the weight of the grinding cup 2 and the base 3, making it easier to take the grinding cup 2 and the base 3.

[0065] As a preference under this embodiment, the heat dissipation channel has an air inlet and an air outlet, and the control module 7 is located on the side close to the air inlet so that the air flow passes through the control module 7 first and then passes through the brushless motor 6.

[0066] By providing the heat dissipation channel with an air inlet and an air outlet, and the control module 7 being located on the side close to the air inlet, so that the airflow first passes through the control module 7 and then passes through the brushless motor 6, the external cold air can first dissipate heat to the control module 7 after entering the heat dissipation channel, which helps to improve the heat dissipation effect of the airflow on the control module 7, can reduce the impact of excessive temperature on the control module 7, and reduce the risk of serious aging of electrical components in the control module 7 due to long-term high temperature, and avoid the airflow passing through other components such as the brushless motor 6 and then passing through the control module 7, causing the airflow temperature to rise and passing through the control module 7, resulting in poor heat dissipation effect of the airflow on the control module 7, so that the control module 7 is easily damaged due to excessive temperature.

[0067] It should be noted that the heat dissipation channel in this application is not limited to the above-mentioned setting. It can also be a separate heat dissipation channel set in the host 1 and the base 3. At the same time, a fan 8 connected to the motor shaft of the brushless motor 6 is set in the base 3, and a drive motor and a fan 8 connected to the drive motor are set in the host 1 to achieve separate heat dissipation of the host 1 and the entire machine, thereby improving the heat dissipation efficiency. At the same time, it eliminates the need to open a through hole in the host 1 to connect with the entire machine, thereby improving the sealing and waterproof performance of the host 1, making it easier for users to clean the host 1 and improving the user experience.

[0068] As a preferred embodiment of the present application, Figure 2 As shown, the grinding cup 2 is a through structure, and the heating plate 4 abuts against the bottom end of the grinding cup 2 to enclose the grinding cup 2 to form a grinding chamber.

[0069] By setting the grinding cup 2 as a top-to-bottom through structure, and the heating plate 4 abutting the bottom end of the grinding cup 2 to enclose the grinding cup 2 to form a grinding chamber, the setting of the bottom wall of the grinding cup 2 is eliminated, which not only helps to reduce the demoulding amount of the grinding cup 2, and thus reduces the weight of the grinding cup 2, thereby further reducing the weight of the whole machine and facilitating the taking of the whole machine, but also enables the heat generated by the heating plate 4 to be directly transferred to the food, which helps to improve the heat conduction effect and improve the heating efficiency.

[0070] Example 2

[0071] like Figures 8 to 12 As shown, a crushing power assembly includes a heating plate 4 and a brushless motor 6 arranged below the heating plate. The heating plate is used to form the bottom of the crushing cup of the food processor. The heating plate is provided with a heating element, preferably a heating tube and the heating tube is embedded in the aluminum die-cast heating plate. The brushless motor includes a motor body 61 and a motor lower shell 62 provided on the outside of the motor body. The motor body includes a stator assembly 611 and a rotor assembly 612. The motor lower shell is fixedly connected to the heating plate to fix the motor body between the motor lower shell and the heating plate. The top end of the motor shaft of the motor body is fixedly connected with a crushing knife 9. The crushing power assembly includes a connecting piece 10. The connecting piece 10 passes through the motor lower shell and is directly fixed to the heating plate, which simplifies the installation of the motor body and solves the problem that the vibration of the motor body is directly transmitted upward to the heating plate and then to the crushing knife through the connecting piece, resulting in high resonance noise of the crushing knife under crushing working conditions. It also solves the problem that the coaxiality deviation between the crushing knife at the upper end of the motor shaft and the lower end of the motor shaft is large, and the shaft seal at the connection between the motor shaft and the heating plate is unevenly stressed in the circumferential and radial directions, resulting in shaft seal damage and shaft seal leakage.

[0072] The brushless motor of the prior art generally includes an upper end cover, a lower end cover and a motor body. When the brushless motor of the prior art is installed on a food processing machine, at least two assembly processes are required. The first assembly process is to install and fix the motor body of the brushless motor in the upper end cover and the lower end cover of the motor to form a brushless motor structure of the smallest unit that can operate independently. The second assembly process is to install and fix the brushless motor of the smallest unit to the heating plate. Not only are there many structural parts, but the assembly process is also complicated. The turnover time of the parts between the motor factory and the whole machine assembly factory, the space occupied by the parts, and other turnover and transportation costs are higher.

[0073] In order to solve the problems of high assembly cost, low assembly efficiency and large space occupied by brushless motors and food processors, the applicant proposed an implementation scheme in the utility model patent with patent number CN202322295197.3, entitled "A convenient food processor". The specific description is recorded in paragraphs

[0055] to

[0057] of the utility model patent specification: "The food processor includes a connecting member, which passes through the connecting portion and the fixing portion in sequence and is fixed to the heating plate. On the one hand, the connecting member can realize radial and circumferential limitation of the stator assembly after passing through the fixing portion. On the other hand, a connecting member can realize the stator housing, the motor housing, and the motor housing. The fixed structure of the main body and the heating plate helps improve their coaxiality, thereby ensuring the stability of the brushless motor's rotation, and can also improve assembly efficiency and shorten assembly time. The applicant further discovered that although this embodiment eliminates the upper end cover of the prior art brushless motor and reduces the assembly process, simplifying and integrating the brushless motor's minimum operating unit onto the heating plate, the connector in this embodiment rigidly connects the motor lower housing, the stator assembly of the motor main body, and the heating plate. This allows the stator assembly to directly transmit vibrations upward to the heating plate through the connector, significantly increasing the resonance noise between the motor main body, the heating plate, and the motor lower housing. Secondly, the stator core in the stator assembly is generally formed by stacking multiple silicon steel sheets. Due to the superposition of the dimensional consistency deviation of the silicon steel sheets themselves and the dimensional deviation caused by the assembly of multiple silicon steel sheets, the radial dimensional deviation of the stator core is large. When the connecting parts pass through the connecting part of the motor lower shell and the fixed part on the stator core in sequence and are fixed to the heating plate, the assembly dimension chain is long and the radial installation and positioning dimension deviation of the connecting parts is large, especially when passing through the fixed part, resulting in radial displacement of the connecting parts, thereby greatly reducing the installation and positioning accuracy between the motor lower shell and the heating plate, and further resulting in radial displacement between the upper end crushing knife of the motor shaft and the lower end of the motor shaft, and even a large angle of inclination, which reduces the coaxiality of the rotor assembly and the crushing knife, and makes the radial and circumferential force of the shaft seal at the connection between the heating plate and the motor shaft uneven. The shaft seal is easily damaged, resulting in water leakage, and liquid penetrates into the motor and damages the motor, thereby affecting the service life of the food processor. Furthermore, the connector passes through the connecting portion and the fixing portion in sequence, which increases the difficulty of assembling the heating plate, the motor body, and the motor lower housing. The connector needs to be aligned at the connecting portion, the fixing portion, and then mounted on the heating plate. This triple alignment actually reduces assembly efficiency. Therefore, the applicant continues to research and seek solutions to the above technical problems.

[0074] In this embodiment, specifically, Figure 9 and Figure 11As shown, the motor lower housing includes a bearing portion 621 that abuts the lower end of the stator assembly and a connecting portion 622 connected to the heating plate. The connecting member 10 passes through the connecting portion and is directly fixed to the heating plate 4. After the brushless motor is installed in place, the crushing blade on the motor shaft is aligned with the motor body and installed in place, minimizing the coaxial deviation between the crushing blade, the stator assembly of the motor body, and the rotor assembly of the motor body. This improves the crushing performance and stability of the crushing power assembly, and the shaft seal provided at the connection between the motor shaft and the heating plate is evenly stressed and reliably sealed, and the transmission resonance noise between the motor body, the heating plate, and the motor lower housing is reduced. Preferably, the bearing portion includes a housing side wall and a housing bottom wall.

[0075] As a preference, Figure 9 and Figure 10 As shown, a mounting post 11 is provided at the bottom of the heating plate, a threaded hole 12 is provided in the mounting post, and a through hole 13 is provided in the connecting portion. The connecting member passes through the through hole and the threaded hole in sequence, and is locked and fixed to the heating plate through the threaded hole. Preferably, the connecting member 10 is a screw, which passes through the mounting through hole of the motor lower shell from bottom to top and is locked and fixed in the threaded hole of the heating plate. The screw does not pass through the physical internal structure of the stator assembly, but is spaced apart on the outer peripheral side of the stator assembly. The screw and the outer side surface of the stator core are provided with a gap, which makes the assembly of the crushing power assembly more efficient and the assembly accuracy higher. The connecting member 10 does not contact the stator assembly, and the radial positioning deviation between the heating plate, the motor shaft and the motor lower shell caused by the large radial dimensional deviation of the stator assembly is eliminated to the greatest extent, thereby improving the coaxiality between the motor shaft of the motor body and the heating plate and the motor lower shell. In particular, when the connecting parts are rigidly connected to the lower shell of the motor and the heating plate respectively, it can also effectively prevent the motor body from directly transmitting vibration to the heating plate through the connecting parts, effectively reducing the resonance noise between the heating plate, the motor body and the lower shell of the motor, thereby reducing the overall noise of the crushing power assembly and making the transmission more stable.

[0076] like Figure 10As shown, a mounting baffle 14 is provided at the bottom of the heating plate, and the mounting baffle is in the form of an interval arc segment baffle, or a continuous arc segment baffle, which is arranged around the outside of the stator core, and the mounting baffle is provided with an abutment portion 15, and the abutment portion 15 and the bearing portion 621 abut against the upper end and the lower end of the stator assembly respectively to clamp the stator assembly between the heating plate and the lower shell of the motor, and the stator assembly is axially and radially limited by the abutment portion and the bearing portion. Specifically, the stator assembly includes a stator core 20 and a coil, and the bearing portion includes a lower positioning step 16 provided on the inner wall of the lower shell of the motor. In this embodiment, the lower positioning step is preferably provided in the shell side wall of the lower shell of the motor, and the abutting portion includes an upper positioning step 17. The inner side wall of the mounting baffle is provided with the upper positioning step 17. The upper end face of the stator core 20 abuts against the step end face 18 of the upper positioning step, and the lower end face of the stator core abuts against the step end face 18 of the lower positioning step to accurately position the stator assembly axially. The step side face 19 of the upper positioning step and the step side face 19 of the lower positioning step respectively cooperate with the upper outer side face of the stator core and the lower outer side face of the stator core to accurately position the stator assembly radially. The stator assembly includes a stator core and a coil, such as Figure 12 As shown, the stator core outer surface is provided with a positioning protrusion 21, and the mounting baffle and the motor lower housing are provided with a positioning groove 22 that cooperates with the positioning protrusion to accurately limit the circumferential position of the stator assembly. It is understood that the mounting baffle and the mounting post can be connected as a whole or provided separately. Of course, the mounting baffle can also be formed by extending outward from the mounting post to improve the strength of the heating plate and the positioning accuracy of the stator assembly.

[0077] The rotor assembly 612 includes a rotor, a motor shaft 23 that rotates with the rotor, an upper bearing 24 and a lower bearing 25 mounted on the motor shaft. A through hole for the motor shaft to pass through and an upper bearing mounting cavity 26 for mounting the upper bearing are provided in the middle of the heating plate. A lower bearing mounting cavity 27 for mounting the lower bearing is provided in the middle of the motor lower housing. The inner top surface of the upper bearing mounting cavity and the inner bottom surface of the lower bearing mounting cavity abut against the upper end surface of the upper bearing and the lower end surface of the lower bearing, respectively, to clamp the rotor assembly between the heating plate and the motor lower housing. A connector directly connects the heating plate and the motor lower housing and does not contact the stator assembly, greatly improving the installation accuracy of the rotor assembly and the motor shaft, and unaffected by dimensional deviations of the stator core. The inner ring of the bearing is interference-fitted with the motor shaft, and the outer ring of the bearing is interference-fitted with the inner surface of the bearing mounting cavity, thereby improving the coaxiality of the rotor assembly with the heating plate and the motor lower housing, as well as the coaxiality and transmission performance of the motor shaft and the crushing blade. A shaft seal installation cavity is also provided above the upper bearing installation cavity, and a shaft seal is provided in the shaft seal installation cavity to prevent the liquid in the grinding cup from leaking into the motor body.

[0078] Preferably, an upper gasket 28 is provided between the inner top surface of the upper bearing mounting cavity and the upper end surface of the upper bearing, and a lower gasket 29 is provided between the inner bottom surface of the lower bearing mounting cavity and the lower end surface of the lower bearing. The gasket can be a hard gasket or a flexible gasket, thereby forming a buffer to further reduce the resonance noise between the upper bearing and the heating plate, and the lower bearing and the lower shell of the motor.

[0079] This embodiment also provides a food processing machine, including a main machine and a grinding cup, wherein the grinding cup is detachably connected to the main machine, and the grinding cup includes the grinding power assembly, such as Figure 8 As shown, the heating plate constitutes the bottom of the pulverizing cup, and the pulverizing blade is located inside the pulverizing cup. The vibration noise of the pulverizing cup of the food processor using the pulverizing power assembly is greatly reduced, and the rotation stability of the rotor assembly of the motor body is improved, thereby improving the pulverizing performance of the pulverizing blade, and the shaft seal at the connection between the motor shaft and the heating plate is evenly stressed, thereby extending the service life. At the same time, the outer contour size of the stator assembly of the motor body is also reduced, which makes it more convenient to reliably install the motor body and the pulverizing cup more lightweight. Preferably, the pulverizing cup includes a glass cup body, the upper and lower ends of the glass cup body are through-set, and the heating plate is arranged at the lower end of the glass cup body. The heating plate includes a bottom wall and a side wall, the edge of the side wall extends outward to form a rim, a fixed bracket is provided below the pulverizing power assembly, the fixed bracket and the lower end of the glass cup body clamp and fix the rim, and a seal is provided between the heating plate and the cup body.

[0080] It is understandable that the grinding cup can also be a full metal cup body, preferably the cup body and the heating plate are integrally formed by aluminum die-casting.

[0081] It can be understood that the heating plate is provided with a heating element, and the heating element can also be configured as an electromagnetic induction coil or an electric heating film.

[0082] In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "inner", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0083] In this utility model, terms such as "first," "second," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0084] The technical solutions protected by this utility model are not limited to the above-described embodiments. It should be noted that the combination of the technical solutions of any one embodiment with the technical solutions of one or more other embodiments falls within the scope of protection of this utility model. Although the above description of this utility model has been provided in detail using general instructions and specific embodiments, it is obvious to those skilled in the art that modifications or improvements can be made based on this utility model. Therefore, such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A crushing power assembly, characterized in that: It includes a heating plate and a brushless motor arranged below the heating plate, the heating plate is used to form the bottom of the grinding cup of the food processor, the brushless motor includes a motor body and a motor lower shell arranged outside the motor body, the motor lower shell is fixedly connected to the heating plate to fix the motor body between the motor lower shell and the heating plate, the top end of the motor shaft of the motor body is fixedly connected to the grinding knife, and the grinding power assembly includes a connecting piece, which passes through the motor lower shell and is directly fixed to the heating plate.

2. A crushing power assembly according to claim 1, characterized in that: The motor body includes a stator assembly and a rotor assembly, the motor lower shell includes a bearing portion abutting against the lower end of the stator assembly and a connecting portion connected to the heating plate, and the connecting member is directly fixed to the heating plate through the connecting portion.

3. A crushing power assembly according to claim 2, characterized in that: A mounting post is provided at the bottom of the heating plate, a threaded hole is provided in the mounting post, a through hole is provided in the connecting portion, the connecting piece passes through the through hole and the threaded hole in sequence, and is locked and fixed to the heating plate through the threaded hole, and the connecting piece does not contact the stator assembly.

4. A crushing power assembly according to claim 2 or 3, characterized in that: A mounting baffle is provided at the bottom of the heating plate. The mounting baffle is provided with an abutting portion. The abutting portion and the bearing portion abut against the upper end and the lower end of the stator assembly respectively to clamp the stator assembly between the heating plate and the lower shell of the motor.

5. A crushing power assembly according to claim 4, characterized in that: The stator assembly includes a stator core and a coil, the bearing portion includes a lower positioning step arranged on the inner wall of the lower shell of the motor, and the abutting portion includes an upper positioning step arranged on the inner side of the mounting baffle, the upper end surface of the stator core abuts against the step end surface of the upper positioning step, and the lower end surface of the stator core abuts against the step end surface of the lower positioning step.

6. A crushing power assembly according to claim 4, characterized in that: The stator assembly includes a stator core and a coil. The outer side surface of the stator core is provided with a positioning protrusion, and the mounting baffle and the motor lower shell are provided with a positioning groove that cooperates with the positioning protrusion.

7. A crushing power assembly according to claim 5, characterized in that: The step side surface of the upper positioning step and the step side surface of the lower positioning step are respectively matched with the upper portion of the outer side surface of the stator core and the lower portion of the outer side surface of the stator core.

8. A crushing power assembly according to claim 2 or 3, characterized in that: The rotor assembly includes a rotor, the motor shaft rotating with the rotor, an upper bearing and a lower bearing arranged on the motor shaft, a through hole for the motor shaft to pass through and an upper bearing mounting cavity for installing the upper bearing are provided in the middle of the heating plate, and a lower bearing mounting cavity for installing the lower bearing is provided in the middle of the motor lower shell, the inner top surface of the upper bearing mounting cavity and the inner bottom surface of the lower bearing mounting cavity are respectively abutted against the upper end surface of the upper bearing and the lower end surface of the lower bearing to clamp the rotor assembly between the heating plate and the motor lower shell.

9. A crushing power assembly according to claim 8, characterized in that: An upper gasket is provided between the inner top surface of the upper bearing installation cavity and the upper end surface of the upper bearing, and a lower gasket is provided between the inner bottom surface of the lower bearing installation cavity and the lower end surface of the lower bearing.

10. A food processing machine, characterized in that: It includes a main unit and a crushing cup, the crushing cup is detachably connected to the main unit, the crushing cup includes the crushing power assembly according to any one of claims 1 to 9, the heating plate constitutes the bottom of the crushing cup, and the crushing knife is located in the crushing cup.

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