Food processor capable of improving heat dissipation

Abstract

The food processor comprises a main machine, a cup body assembly and a motor assembly, the cup body assembly and the motor assembly are installed on the main machine, a machine shell is provided with an air inlet, an air outlet and an extending hole for a motor shaft of the motor assembly to extend out, the motor assembly comprises an upper cover, a lower cover and a motor, and the upper cover is connected with the machine shell in a sealed mode to seal the extending hole; the upper cover and the lower cover clamp the motor and form a heat dissipation air channel inside, the upper cover and the lower cover are respectively provided with an air inlet hole and an air outlet hole which are communicated with the heat dissipation air channel, the air inlet hole is located above the heat dissipation air channel, and air flows into an inner cavity of the main machine from the air inlet, passes through the air inlet hole, the heat dissipation air channel and the air outlet hole from top to bottom and then flows out from the air outlet. Air flow can be directly injected into the heat dissipation air channel from the upper portion of the motor, flows vertically downwards and directly and is finally discharged out of the air outlet holes, reciprocating operation in the motor cover is not needed, and the heat dissipation efficiency of the air flow is improved. In addition, the size of the main machine can be compressed, and finally a simple, efficient and small food processor is provided for consumers.

Description

Technical Field

[0001] The invention relates to the field of food processing, and in particular to a food processor which realizes pulverizing processing by driving a pulverizing cutter with a motor. Background Art

[0002] Traditional food processors, especially wall breaking machines, use motors to drive crushing cutters to crush ingredients, and are equipped with heating elements to boil ingredients, which greatly meets the needs of people for cooking and processing ingredients. In order to provide the crushing effect of the food processor, the motor drives the crushing cutter to rotate at high speed, but the high-speed operation of the motor increases the noise of the food processor and also increases the operating temperature of the motor itself. Therefore, how to effectively reduce the noise and temperature rise of the motor is a technical problem faced and solved by technical personnel in this field.

[0003] Compared to directly setting the motor in the housing of the main machine, the existing food processing machines usually have a motor cover on the outer jacket of the motor, and use the motor cover to form a heat dissipation duct inside. When the motor is working, the fan is used to drive the airflow to flow into and through the motor from one end of the motor cover, and then flow out from the other end of the motor cover. For example, CN202022829287.2 discloses a food processor, including a motor, which is provided with a fan, and the motor is cooled by the fan. A motor cover is provided outside the motor, and the motor cover forms an air duct. The motor cover can not only soundproof and reduce noise, but also guide the airflow and improve the heat dissipation performance. However, such a technical solution can only meet simple functional requirements, and the improvement of noise reduction and heat dissipation is not outstanding.

[0004] As a technical improvement, the heat dissipation and noise reduction of the motor are improved by changing the matching structure between the motor and the motor cover. For example, CN201921024767.2 discloses a food processor, in which a motor cover is arranged outside the motor, and the motor cover includes a panel and an air duct member, a receiving cavity is arranged inside the panel, and a main air duct is arranged inside the air duct member. The motor cover is used to cover the motor to reduce the noise of the motor. The motor is installed in the receiving cavity, and the wind outside the motor cover is introduced into the receiving cavity through the main air duct, and the heat generated by the motor is taken away by the circulating flow of the wind to achieve heat dissipation. Such a scheme, by providing a closed motor cover and forming a closed receiving cavity and a main air duct, can block the noise of the motor in the closed receiving cavity, and the main air duct can guide most of the airflow to the motor to improve the heat dissipation effect of the motor. However, such a solution still has the following technical problems: since the motor cover needs to seal the motor and air duct parts and the main air duct are set on the outside, the motor cover needs to occupy a large volume in space, which increases the volume of the main unit of the food processor and compresses the space that can accommodate other components in the main unit, such as the circuit board, which is not conducive to the assembly of the internal components of the main unit. Such compression does not utilize the heat dissipation of the control board. Although the heat dissipation of the control board can be improved by setting an auxiliary air duct, when the heat dissipation demand of the main control board becomes larger, the closed space between the motor cover and the casing is not conducive to the heat dissipation of the control board; at the same time, although the closed main air duct and the accommodating cavity can guide most of the airflow to the motor, the airflow needs to reciprocate in the air duct. The internal shape and structure of the air duct will affect the speed and direction of the air flow, thereby affecting the heat dissipation effect of the motor cover on the motor. In addition, the reciprocating operation of the airflow will also increase the vibration and noise of the impact of the airflow during rotation.

[0005] During the product development process, the applicant has continuously explored the assembly structure of the motor and the motor cover to achieve better noise reduction and heat dissipation effects. For example, the food processors of CN202222626564.9 and CN202223521497.0, by arranging a motor cover outside the motor to form a motor assembly together with the motor, and using the motor assembly to form a chamber for spatially limiting the motor, the noise reduction and heat dissipation of the motor are fully improved.

[0006] However, the applicant found in-depth research and full analysis of the product market performance that although the existing technical solutions can achieve better and stronger heat dissipation and noise reduction effects for the motor, such technical solutions require complex structures to support them. Such structures usually occupy a large space, and the complex structure causes the gas to continuously reciprocate in the motor cover, which in turn affects the final efficiency. For some conventional food processing machines, it is not necessary to pursue the ultimate heat dissipation and noise reduction effect, and the existing technical solutions cannot fully meet the needs. Summary of the invention

[0007] The purpose of the present application is to provide a food processor with improved heat dissipation, which, while being able to meet the requirements of conventional noise reduction and heat dissipation, also meets the requirements of the volume of the main unit, the installation and heat dissipation of other components in the main unit, so as to ensure that on the basis of meeting various needs, the best balance between various modules is pursued to achieve a food processor with balanced indicators.

[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a food processing machine with improved heat dissipation, comprising a main machine and a cup body assembly installed on the main machine, the cup body assembly is provided with a crushing knife, the main machine comprises a casing and a motor assembly arranged in the casing for driving the crushing knife, the casing is provided with an air inlet, an air outlet and a through hole for a motor shaft of the motor assembly to extend, wherein the motor assembly comprises an upper cover, a lower cover and a motor, the upper cover is sealingly connected to the casing to close the extension hole, the upper cover and the lower cover clamp the motor and form a heat dissipation duct inside, the upper cover and the lower cover are respectively provided with an air inlet and an air outlet connected to the heat dissipation duct, the air inlet is located above the heat dissipation duct, air flows into the inner cavity of the main machine from the air inlet and flows through the air inlet, the heat dissipation duct and the air outlet from top to bottom, and then flows out through the air outlet.

[0009] Preferably, the upper cover is provided with a sealing ring abutting against the casing, the sealing ring surrounds the extension hole to close the extension hole, and the air inlet hole is located at the outer periphery of the sealing ring.

[0010] Preferably, the upper cover is made of a flexible material, the sealing ring is formed by extending upward from the upper surface of the upper cover, and the plurality of air inlet holes are arranged around the sealing ring.

[0011] Preferably, a sealing gasket is clamped between the upper cover and the casing, and a plurality of air inlet holes are arranged at the upper end of the upper cover and around the extension hole.

[0012] Preferably, the motor includes a motor bracket, the motor bracket is provided with a mounting hole, the upper cover and the lower cover are respectively provided with an upper hole and a lower hole connected to the mounting hole, and the motor assembly is fixedly connected to the casing through the upper hole, the mounting hole, and the lower hole that are connected in sequence.

[0013] Preferably, the motor assembly further comprises a motor foot pad arranged in the mounting hole, a through hole is arranged at the center of the motor foot pad, and the motor foot pad is provided with an upper shock absorbing part and a lower shock absorbing part respectively abutting against the upper cover and the lower cover.

[0014] Preferably, the motor foot pad includes three mounting grooves sequentially arranged along the axial direction, which are respectively clamped with the upper cover, the motor bracket and the lower cover.

[0015] Preferably, a retaining wall extending upward is provided on the periphery of the top wall of the lower cover, and the retaining wall is combined to form an installation cavity, and the motor bracket is arranged in the installation cavity. When the upper cover and the lower cover are combined, the retaining wall abuts against the lower side of the upper cover.

[0016] Preferably, a downwardly extending annular wall is provided on the periphery of the bottom wall of the upper cover, and the annular wall is sleeved on the outside of the retaining wall and is closely attached to the retaining wall.

[0017] Preferably, a shock-absorbing pad is sandwiched between the upper cover and the lower cover.

[0018] Preferably, a fixing column and a fixing hole that are plugged into each other are provided between the lower cover and the housing, a foot pad is clamped between the fixing column and the fixing hole, and the housing supports the motor assembly through the fixing column and the fixing hole.

[0019] Preferably, the bottom of the lower cover abuts against the casing and forms an exhaust passage between the lower cover and the casing, the exhaust passage communicates with the air outlet and the air outlet, and a sponge is clamped between the lower cover and the casing.

[0020] After adopting the above scheme, the present invention has the following advantages:

[0021] 1. Compared with the existing multi-layer wrapped motor assembly, the present application clamps the motor through the upper cover and the lower cover and forms a heat dissipation duct inside, and further sets air inlet and air outlet holes on the upper cover and the lower cover respectively. Relying on the wrapping and clamping of the motor by the upper cover and the lower cover, the heat dissipation and noise reduction of the motor can be achieved, meeting the basic needs for heat dissipation and noise reduction. The air inlet hole is set on the upper cover, and the air flow can be directly injected into the heat dissipation duct from the top of the motor and directly flow vertically downward and finally discharged from the air outlet hole, without having to reciprocate in the motor cover, thereby improving the heat dissipation efficiency of the air flow. Furthermore, the upper cover is sealed and connected to the casing to close the extension hole, so as to prevent gas and noise from being transmitted outward from the through hole of the casing. In this way, even if part of the noise of the motor is discharged outward from the air inlet hole of the upper cover, it will not leak out through the through hole of the casing, achieving a better noise reduction effect. It should be noted that the sealed connection here refers to the motor shaft around the motor at the extension hole, isolating the inside of the host from the outside, so as to prevent the air flow inside the host from being discharged outward from the extension hole. The airflow path from top to bottom through the air inlet, heat dissipation duct, and air outlet does not require other airflow channels to be set in the radial direction on the upper cover and the lower cover, which can compress the radial size of the motor assembly composed of the upper cover, the lower cover, and the motor. In this way, it is convenient to install other components in the casing, and it is also convenient to compress the size of the main machine, and finally provide consumers with a simple, efficient, and compact food processor. The air inlet of the motor assembly is located in the space formed by the upper cover and the casing. The heat dissipation of the motor assembly in the main machine enters the interior of the motor assembly from the air inlet of the upper cover. Other areas in the main machine can form effective heat dissipation for parts such as the control board. At the same time, after the airflow enters the main machine from the air inlet of the main machine, it flows through the control board and other components first, and then is injected into the motor assembly through the air inlet, so as to avoid the hot air flowing through the motor and then flowing through the control board assembly, which is more efficient and safer. Preferably, the air inlet, the heat dissipation duct and the air outlet are arranged to be axially connected, which means that the axial projections of the air inlet, the heat dissipation duct and the air outlet overlap, that is, when the air flow is transmitted axially through the air inlet, the heat dissipation duct and the air outlet, it can flow through without bending.

[0022] 2. Directly set a sealing ring on the upper cover, and use the installation between the upper cover and the housing to seal the extension hole. When the motor assembly and the housing are assembled in place, the sealing of the extension hole can be achieved and guaranteed, and the structure is simple and reliable. The air inlet hole is set on the outer periphery of the sealing ring. The air inlet hole and the sealing ring are both set by the upper cover, and can be made of the upper cover as a whole, so that the relative position of the air inlet hole position of the motor assembly and the sealing position of the extension hole are stable and reliable. After the airflow enters from the air inlet of the main unit, it flows through the external space of the motor assembly and reaches the air inlet hole and the sealing ring position. The airflow can flow into the motor assembly from the air inlet hole constantly, ensuring that the air intake into the motor assembly is stable and reliable.

[0023] 3. As mentioned above, in the earlier application documents, the applicant has focused on sealing the motor extension hole of the main unit to achieve a better noise reduction effect, and can also improve the sealing effect by providing a flexible sound insulation piece. However, the applicant further discovered through further research that the above scheme still has the following problems: In order to achieve a better noise reduction effect, the motor and the fixed cover are respectively fixedly connected to the housing of the main unit and clamped with the sound insulation piece, which greatly increases the radial space occupied by the motor assembly, and the main airflow for motor heat dissipation flows in the motor cover, which reduces the heat dissipation efficiency of the control panel. Therefore, how to achieve a technical solution with good performance in all technical directions by improving the space utilization of the main unit and compressing the volume of the motor assembly while maintaining the heat dissipation and noise reduction of the motor is the goal that this application continues to pursue. Based on the above application, the applicant changed the technical direction of the original application, based on the upper cover made of flexible material, and set the upper cover with a sealing ring that abuts against the casing and an air inlet hole surrounding the sealing ring. The upper cover is no longer completely fitted with the inner wall of the casing, and only the sealing ring needs to be retained to seal the extended shaft, and the air inlet hole ensures that the airflow can be directly guided into the heat dissipation duct from the top of the heat dissipation duct and directly dissipate heat to the motor, thereby improving the heat dissipation efficiency and the space utilization rate inside the host. The airflow is changed to directly pass through the axial direction, and it is no longer necessary to set other radial air flow ducts, so that the overall size of the motor assembly can be compressed, and the purpose of making the host small and light can be achieved. Multiple air inlet holes are set to make the air intake uniform, especially the axially penetrating airflow can further compress the gap between the inner wall of the heat dissipation duct and the outer wall of the motor, so that more airflow can be guided to the rotor assembly of the motor to better dissipate heat to the rotor, and the compressed space can also reduce the noise of the motor from being transmitted outward, achieving a better noise reduction effect.

[0024] 4. The upper cover and the lower cover are respectively provided with an upper hole and a lower hole, and then the upper hole, the mounting hole and the lower hole are coaxially arranged, so that the motor assembly can be directly coaxially fixedly connected to the housing without the need for the housing to be respectively fixedly connected to the upper cover, the lower cover or the motor, thereby reducing the assembly structure between the various accessories and saving the time spent on installing each component separately. In addition, the coaxial arrangement of the upper cover, the lower cover and the motor mounting structure can effectively compress the radial dimensions of the upper cover and the lower cover, avoid the motor assembly from occupying an excessively large dimension, further compress the dimensions of the motor assembly and the host, and facilitate the installation of other components other than the motor assembly, such as the control panel. Furthermore, the upper cover, the lower cover and the motor mounting structure are coaxially arranged, and no other air duct path is required between the upper cover and the lower cover. In this way, the size between the upper cover, the lower cover and the motor can be compressed, that is, the overall size of the motor assembly is reduced, and the size between the heat dissipation duct and the outer wall of the motor body is compressed, thereby reducing the airflow flowing through the gap between the outer wall of the motor body and the inner wall of the heat dissipation cavity, and allowing more airflow to flow from the inside of the motor, that is, between the stator and the rotor, thereby improving the heat dissipation effect of the motor.

[0025] 5. Use the motor foot pad to isolate the upper cover, lower cover and motor from each other, effectively avoiding the mutual vibration between the upper cover, lower cover and motor, thereby reducing the vibration and noise generated by the motor assembly, and achieving the purpose of noise reduction of the food processor. By setting a through hole in the center of the motor foot pad, the motor assembly is fixed to the housing of the main machine through a fixing structure passing through the through hole, so that shock isolation is also formed between the motor assembly and the housing, avoiding the vibration generated by the motor assembly from being transmitted to the housing through the fixing structure, and more effectively improving the shock reduction and noise reduction effect of the food processor.

[0026] 6. The upper cover, motor bracket and lower cover are fixedly installed through the mounting grooves and motor pads respectively, which strengthens the shock-absorbing effect of the motor pads on the upper cover, lower cover and motor. At the same time, the mounting grooves can also play a limiting role, so that the upper cover, lower cover and motor can be better positioned through the motor pads, ensuring the reliable installation of the motor assembly and making the installation structure between the motor assembly and the casing stable and reliable.

[0027] 7. The peripheral edge of the top wall of the lower cover is used to form a retaining wall and an installation cavity is formed inside. The motor bracket is directly arranged in the installation cavity, which can better limit the motor bracket and the motor and prevent the motor from shifting in the installation cavity, thereby ensuring that the motor is firmly positioned in the heat dissipation duct, thereby ensuring that the heat dissipation effect of the airflow on the motor is always maintained in a reliable and stable state.

[0028] 8. The upper cover is provided with a ring wall to fit with the retaining wall of the lower cover, so as to more effectively seal the motor and improve the heat dissipation effect. The sealing condition can also further improve the sealing effect of noise and play a noise reduction effect. At the same time, the upper and lower cover structures that are interlocked with each other are more stable, and the limit fixation of the motor is also more reliable, ensuring the stability of the motor assembly structure, and finally making the motor assembly reliably installed in the housing.

[0029] 9. A shock-absorbing pad is further arranged between the upper cover and the lower cover. With this arrangement, the upper cover and the lower cover are fixedly connected through the motor foot pad, and the upper cover and the lower cover body are then matched with each other through the shock-absorbing pad, so as to fully ensure that the upper cover and the lower cover are in contact through the flexible structure, thereby improving the shock-absorbing effect between the upper cover and the lower cover, and improving the shock-absorbing and noise-reducing effect of the motor assembly.

[0030] 10. A sealing gasket is arranged between the upper cover and the casing to strengthen the sealing between the motor assembly and the through hole of the casing, and prevent the airflow and noise in the casing from being transmitted outward through the through hole, that is, to ensure that the airflow can effectively enter the motor assembly through the air inlet hole of the upper cover in the casing, ensure effective heat dissipation of the motor, and strengthen the sealing effect of the noise in the casing, achieving a better noise reduction effect. Preferably, the shock-absorbing pad is a shock-absorbing cotton arranged between the upper cover and the inner wall of the casing, and a viscose is arranged on one side of the shock-absorbing cotton to adhere to the outer wall of the upper cover or the inner wall of the casing.

[0031] 11. Use the fixing column and the fixing hole to limit the motor assembly and the casing at the lower end, so as to avoid excessive strength requirements on the upper end of the casing when the motor assembly is completely hoisted on the upper end of the casing, and to prevent the bottom end from easily swinging when only the upper end of the motor is fixed, thereby improving the stability of the motor assembly. Then, by clamping the foot pad between the fixing column and the fixing hole, the bottom wall of the casing can provide flexible floating support for the motor assembly, which not only achieves the purpose of shock absorption, but also allows the motor assembly to retain a certain amount of floating, so as to avoid excessive swing force when the motor assembly is fixed too tightly at the bottom, and the crushing module of the motor and cup assembly is transmitted.

[0032] 12. Further set up an exhaust channel to strengthen and guide the hot air flow out of the motor assembly to quickly discharge to the outside of the casing, and prevent the hot air flow from entering the casing again to avoid affecting other components in the casing. Then clamping a sponge between the lower cover and the casing can effectively strengthen the sealing effect of the exhaust channel, better prevent the hot air flow in the exhaust channel from being discharged outward, and also play a shock-absorbing effect between the motor assembly and the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of a food processor with improved heat dissipation according to the present invention.

[0034] Figure 2 This is an exploded schematic diagram of the main machine structure of the first embodiment of the food processing machine described in the present invention.

[0035] Figure 3 It is a schematic diagram of the casing structure of the first embodiment of the food processing machine of the present invention.

[0036] Figure 4 It is a schematic diagram of the upper cover structure of the first embodiment of the food processing machine of the present invention.

[0037] Figure 5 This is a schematic diagram of the upper cover and motor structure of the first embodiment of the food processor of the present invention.

[0038] Figure 6 This is a schematic diagram of the structure of the motor assembly of the first embodiment of the food processing machine of the present invention.

[0039] Figure 7 This is a schematic diagram of the assembly structure of the casing and the motor assembly of the first embodiment of the food processing machine of the present invention.

[0040] Figure 8 This is a cross-sectional view of the main machine structure of the first embodiment of the food processing machine described in the present invention.

[0041] Fig. 9 for Figure 8 A is a partial enlarged schematic diagram of the middle part.

[0042] Fig.10 This is a schematic diagram of the airflow operation of the main machine of the first embodiment of the food processing machine described in the present invention.

[0043] Fig.11 This is an exploded schematic diagram of the main machine structure of the second embodiment of the food processing machine described in the present invention.

[0044] Fig.12 This is a cross-sectional view of the main machine structure of the second embodiment of the food processing machine of the present invention.

[0045] Fig.13 for Fig.12 A partial enlarged schematic diagram of B in the figure.

[0046] Fig.14 for Fig.12 A partial enlarged schematic diagram of C in the middle.

[0047] The corresponding names in the attached drawings are as follows:

[0048] 001. cup assembly; 002. host; 100. host cavity; 11. upper shell; 111. extension hole; 112. motor column; 113. fixing screw; 12. lower shell; 121. air inlet; 122. air outlet; 123. fixing hole; 21. upper cover; 211. upper cover hole; 212. air inlet hole; 213. upper hole; 214. ring wall; 215. limit cavity; 216. sealing groove; 217. sealing ring; 22. lower cover; 220. Hot air duct; 221. Lower hole; 222. Block wall; 223. Fixed column; 224. Air outlet; 225. Exhaust channel; 226. Wind shield column; 227. Installation cavity; 3. Motor; 31. Motor bracket; 311. Installation hole; 32. Fan; 41. Sealing pad; 42. Shock-absorbing pad; 43. Sponge; 5. Motor foot pad; 51. Through hole; 52. First installation slot; 53. Second installation slot; 54. Third installation slot; 55. Installation slot; 6. Foot pad. DETAILED DESCRIPTION

[0049] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0051] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. As for the positional relationships such as "upstream" and "downstream", they are based on the positional relationships when the fluid flows normally.

[0052] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0055] The food processing machine with improved heat dissipation of the present invention is as follows: Figure 1-14As shown, it includes a main unit and a cup assembly installed on the main unit, a crushing module (not shown) is arranged in the cup assembly, the main unit includes a casing and a motor assembly arranged in the casing, a protruding hole is arranged at the upper end of the casing, and the motor shaft of the motor assembly protrudes from the protruding hole to drive the crushing module and crush the food placed in the cup assembly, preferably, the cup assembly is also provided with a heating module for heating and boiling the food in the cup assembly. The casing is also provided with an air inlet and an air outlet, and the external air enters the casing through the air inlet and is discharged through the air outlet. The motor assembly includes an upper cover, a lower cover and a motor. The upper cover and the lower cover clamp the motor and form a heat dissipation duct inside. The motor is in the heat dissipation duct. The upper cover and the lower cover are respectively provided with an air inlet and an air outlet connected to the heat dissipation duct. Thus, the airflow entering the interior of the housing is injected into the heat dissipation duct from the air inlet of the upper cover, and after passing through the heat dissipation duct from top to bottom, it is discharged from the air outlet, and finally discharged from the main unit through the air outlet of the housing to complete the heat dissipation of the motor. The upper cover is sealed and connected to the housing to close the extension hole, which can block the housing of the main unit from being connected to the outside through the extension hole. Thus, the airflow and noise in the housing can be prevented from leaking out from the extension hole, that is, sufficient airflow injected into the motor assembly can be ensured to ensure the heat dissipation of the motor, and the noise in the housing can be prevented from being directly discharged from the extension hole to generate a high noise. The host structure of the food processing machine with the above structure is set. During operation, the airflow outside the host is injected into the casing through the air inlet of the host. After cooling other components in the casing, such as the control board, the airflow enters the motor assembly through the air inlet at the upper end of the motor assembly, passes through the heat dissipation duct from top to bottom, and then is discharged from the motor assembly through the air outlet at the lower end, thereby achieving heat dissipation of the motor. Compared with the motor cover with multiple structures set in the prior art, the heat dissipation duct of the present application is directly set from top to bottom, and it is no longer necessary to reciprocate in the motor cover, which improves the circulation efficiency of the airflow, and further improves the heat dissipation efficiency of the motor. It should be noted that compared with the technical solution of setting a closed heat dissipation duct in the prior art, the heat dissipation effect of the present application is not better than that of a completely closed structure, but the present application solution can not only meet the requirement of heat dissipation of the motor, but also dissipate the heat of other components in the casing of the host, such as the control board, without setting other heat dissipation structures or heat dissipation ducts. At the same time, the heat dissipation duct of the present application is set from top to bottom, rather than setting multiple paths in the radial direction, so that the radial size of the motor assembly is compressed, and the volume of the motor assembly is reduced, which facilitates the installation of other components in the casing, and can also reduce the volume of the main unit and compress the overall volume of the food processor.In this way, the technical solution of the present application does not need to pursue the ultimate noise reduction and heat dissipation effect while satisfying the heat dissipation of the motor and the noise reduction of the main unit. Instead, it meets the heat dissipation of other components, size reduction, simple installation, compact shape, cost optimization and other needs while meeting the needs of most users, thereby providing consumers with a more balanced food processor.

[0056] Embodiment 1.

[0057] As a first embodiment of a food processing machine with improved heat dissipation according to the present invention, Figure 1-10 As shown, the food processor includes a cup body component 001 and a main unit 002, wherein a crushing module (not shown) is arranged in the cup body component 001, and the main unit 002 includes a housing and a motor component arranged in the housing for driving the crushing module. Preferably, the housing includes an upper housing 11 and a lower housing 12 that are interlocked and connected, wherein the upper housing 11 and the lower housing 12 are fixedly connected and form a main unit inner cavity 100 inside, wherein the motor component and other components are arranged in the main unit inner cavity 100, and the housing is also provided with an air inlet 121 and an air outlet 122, and the upper housing 11 is also provided with an extension hole 111 for the motor shaft of the motor component to extend out. In this way, the motor shaft of the motor component extends out of the main unit through the extension hole 111 and is used to drive the crushing module, and the external air can flow into the main unit through the air inlet 121, and after the heat is dissipated to the motor component, it flows out through the air outlet 122, thereby achieving the heat dissipation of the motor component.

[0058] like Figure 2-9 As shown, the motor assembly includes an upper cover 21, a lower cover 22 and a motor 3. The motor 3 is provided with a motor bracket 31. The motor 3 is placed on the lower cover 22 through the motor bracket 31 so that the lower cover 22 supports the motor 3. The upper cover 21 covers the motor 3 and the lower cover 22 so that the upper cover 21 and the lower cover 22 are combined to form a heat dissipation duct 220.

[0059] The center of the upper cover 21 is provided with an upper cover hole 211 for the motor of the motor 3 to extend through, and the outer periphery of the upper cover 211 is provided with an air inlet hole 212. The periphery of the upper cover 21 is provided with an annular wall 214 extending downward, and the annular wall 214 defines a limiting cavity 215 inside the upper cover 21. The periphery of the top wall of the lower cover 22 is provided with a retaining wall 222 extending upward, and the retaining wall 222 cooperates with the annular wall 214. Preferably, the annular wall 214 is provided with a sealing groove 216, and a shock absorbing pad 42 is provided in the sealing groove 216. When the upper cover 21 is covered with the lower cover 22, the retaining wall 222 abuts against the bottom of the shock absorbing pad 42 to clamp the shock absorbing pad 42 between the upper cover 21 and the lower cover 22, so as to close the heat dissipation duct 220 formed by the upper cover 21 and the lower cover 22. The lower cover 22 is also provided with an air outlet hole 224 connected with the heat dissipation duct 220. Preferably, the air inlet 212, the heat dissipation duct 220 and the air outlet 224 are arranged to be axially continuous, that is, in the axial projection, the air inlet 212, the heat dissipation duct 220 and the air outlet 224 overlap each other, that is, the air flow can sequentially pass through the air inlet 212, the heat dissipation duct 220 and the air outlet 224 along a straight path. The limiting cavity 215 is defined by the annular wall 214 to form a certain space between the motor 3 and the upper cover 21, and the air flow entering from the air inlet 212 is dispersed through the limiting cavity 215 to flow to the stator and rotor of the motor 3, thereby ensuring uniform heat dissipation.

[0060] The motor support 31 is provided with a mounting hole 311, and the motor assembly further includes a motor foot pad 5 disposed at the mounting hole 311, the motor foot pad 5 is provided with a through hole 51, the upper cover 21 is provided with an upper hole 213, the lower cover 22 is provided with a lower hole 221, the upper shell 11 is provided with a motor column 112, and the motor foot pad 5 is provided with an upper shock absorbing portion and a lower shock absorbing portion respectively abutting against the upper cover 21 and the lower cover 22. The motor foot pad 5 is also provided with a first mounting groove 52, a second mounting groove 53 and a third mounting groove 54. When assembling the motor assembly, the motor foot pad 5 is disposed at the mounting hole 311, and the motor support 31 is clamped in the second mounting groove 53; the upper cover 21 and the lower cover 22 clamp the motor, and the motor foot pad 5 passes through the upper hole 213 and the lower hole 221 respectively, so that the upper cover 21 is clamped in the first mounting groove 52, and the lower cover 22 is clamped in the third mounting groove 54. The motor column 112 passes through the through hole 51, and a fixing screw 113 is arranged at the bottom to fix the motor assembly to the upper shell 11. In this way, the upper shell 11 and the motor assembly, the upper cover 21 and the motor 3, the upper cover 21 and the lower cover 22, and the motor 3 and the lower cover 22 are elastically connected through the motor foot pad 5, which can fully ensure that there is no direct hard contact between the accessories, effectively prevent the vibration transmission between the accessories, thereby achieving a better shock absorption effect and achieving the purpose of noise reduction. At the same time, the upper cover 21, the lower cover 22 and the motor 3 are installed and connected through the coaxial through hole 51, which reduces the installation size occupied in the radial direction when different installation structures are installed, and then effectively reduces the size of the motor assembly itself, that is, it avoids the motor assembly from occupying too much space in the inner cavity of the host, and can fully ensure the installation space of other components in the host, such as the control board, or compress the volume of the host to achieve a light and compact host. At the same time, the radial installation method also allows the motor assembly to be axially penetrated from top to bottom from the air inlet, the heat dissipation duct and the air outlet. After the airflow enters the motor assembly from the air inlet, it directly passes through the motor from top to bottom and is discharged from the air outlet. It is no longer necessary to reciprocate in the motor assembly, which improves the running efficiency of the airflow and improves the heat dissipation effect of the motor. Furthermore, the reduction in radial size also reduces the gap between the lower cover and the outer wall of the motor. In this way, less air flows between the motor and the lower cover, and more air can flow between the stator and the rotor, improving the heat dissipation efficiency of the motor rotor.

[0061] When the motor assembly is fixed to the upper shell 11 through the motor column 112, a sealing gasket 41 is also clamped between the upper cover 21 and the upper shell 11. The sealing gasket 41 is located at the extension hole 111, and when the upper cover 21 and the upper shell 11 are installed in place, the extension hole 111 is closed. In this way, the main engine cavity 100 is isolated from the external space by the sealing gasket 41, and the main engine cavity 100 is prevented from being directly connected to the external space through the extension hole 111, and the noise generated by the main engine cavity 100 is effectively prevented from being directly released outward from the extension hole 111, so as to better achieve the noise reduction of the main engine. The air inlet 212 is located on both sides of the upper cover hole 211, and is composed of a plurality of small holes arranged in a display. Preferably, the air inlet 212 is arranged on the corresponding side of the coil of the motor 3, so that after the airflow flows into the motor assembly from the air inlet 212, the motor can be better cooled. Preferably, the gap between the outer wall of the stator of the motor 3 and the inner wall of the lower cover 22 is G, where G≤3mm. Such a configuration allows a sufficiently small gap to be set between the upper cover, the lower cover and the motor, so that the lower cover can better wrap and clamp the motor, and the airflow no longer needs to reciprocate in the motor cover. The gap between the outer wall of the stator of the motor and the inner wall of the lower cover is further set to G≤3mm, ensuring that more and faster airflow can flow between the stator and the rotor of the motor, thereby improving the heat dissipation effect of the motor.

[0062] The bottom of the lower cover 22 is also provided with a fixing column 223, and the lower shell 12 is correspondingly provided with a fixing hole 123. When fixing the motor assembly, the fixing column 223 is inserted into the fixing hole 123 to limit the lower end of the motor assembly. The outer side of the fixing column 223 is provided with a foot pad 6, and the foot pad 6 is arranged between the fixing column 223 and the fixing hole 123. In this way, when the motor assembly is installed and fixed to the housing, it is not only fixed at the upper end of the motor assembly, but also correspondingly limited at the lower end, so as to avoid the cantilever swing when only one end of the motor assembly is fixed, which affects the stability of the motor. Further, a foot pad of elastic material is arranged between the fixing column 223 and the fixing hole 123, so that the motor assembly and the lower shell are elastically and flexibly connected, and preferably arranged in an axial floating manner, so that the motor has a certain amount of floating at the lower end, is limited at the lower end and has a certain floating space, and when the motor is deflected, it is subjected to swinging extrusion and pushed to reset, so as to ensure the stable and reliable operation of the motor, and reduce the vibration and noise when the motor is rigidly fixed.

[0063] The bottom of the lower cover 22 is further provided with an exhaust channel 225, and the exhaust channel 225 is connected with the heat dissipation duct 220 through the air outlet 224. A wind shield column 226 is also provided in the exhaust channel 225. Preferably, the wind shield columns 226 are arranged in multiple rows and are mutually staggered. The lower cover 22 fits with the lower shell 12 to close the exhaust channel 225 and connect the exhaust channel 225 with the air outlet 122. In this way, the hot air flow discharged from the heat dissipation duct 220 can pass through the exhaust channel 225 and be discharged to the outside of the host through the air outlet 122. The wind shield column 226 blocks the hot air flow and reduces the energy of the noise discharged from the heat dissipation duct 220, thereby achieving the purpose of noise reduction. A sponge 43 is also sandwiched between the lower cover 22 and the lower shell 12. On the one hand, the sponge 43 can make the sealing effect of the exhaust channel 225 better. On the other hand, the sponge also prevents the lower cover 22 from rigidly contacting the lower shell 12, thereby achieving the purpose of buffering and shock reduction. The exhaust channel 225 is used to guide and discharge the hot air flow in the motor assembly, which has a certain buffering effect. Preferably, by setting a volute-shaped and gradually enlarged open outlet structure, the air flow can be decelerated and the noise energy can be quickly attenuated, thereby avoiding the high impact and high noise of the high-speed and high-noise hot air flow when it is directly discharged. The windshield column is then used to further block and reduce the noise of the hot air flow, thereby achieving a better noise reduction purpose. At the same time, the porous properties of the sponge itself can also be used to achieve a better noise reduction effect.

[0064] like Figure 8-10 As shown, preferably, the host 002 is composed of an upper shell 11 and a lower shell 12 that are interlocked, and the motor assembly is wrapped in a host inner cavity 100 formed by the host 002, wherein the upper end of the motor assembly is fixedly connected to the upper shell 11 by fixing screws, and the lower end of the motor assembly is supported on the lower shell 12. Of course, the structure of the host 002 is not limited to this. For example, the host may be provided with a lower shell with side walls, the motor assembly is directly fixed to the lower shell, and the upper shell is covered on the lower shell to close the upper shell, and the motor shaft of the motor is extended to drive the cup body assembly placed on the host. There are other variations in the installation method involving only the outer shell of the host, which are all applicable to the installation of the motor assembly in this application and will not be repeated here. Fig.10As shown, the air flow of the food processor thus configured is shown by the arrows in the figure, and the external air flows into the main unit from the air inlet 121. Since the air does not directly flow into the motor assembly at this time, other components outside the motor assembly, such as the control board and the power board, can be fully cooled. Under the action of the fan, the air is sucked into the heat dissipation duct through the air inlet from the upper end of the motor assembly, and after passing through the motor assembly from top to bottom, it is discharged from the heat dissipation duct through the air outlet, and further discharged from the main unit through the exhaust channel and the air outlet. Since the airflow passes through and is discharged from the motor assembly from top to bottom, there is no need to form a multi-stage circulation in the motor assembly. On the one hand, the path of the airflow in the motor assembly is reduced, and the efficiency of the airflow flow is improved; on the other hand, the penetrating airflow can quickly flow through the surface of the motor, especially through the gap between the stator and the rotor, which can improve the heat dissipation efficiency of the motor. Since the airflow path is optimized, it in turn affects the structure of the upper cover and the lower cover, especially the heat dissipation duct formed by the upper cover and the lower cover, which only needs to be radially sufficient to install the motor, and can greatly compress the gap between the motor and the lower cover, that is, reduce the overall size of the motor assembly, and also reduce the gap between the motor stator and the lower cover, so that more air flows between the stator and the rotor. In summary, the motor assembly is formed by the upper cover, the lower cover and the motor, especially compared with the prior art, the motor assembly is provided with air inlet holes, heat dissipation ducts and air outlet holes from top to bottom, and the airflow is set from top to bottom, avoiding the prior art of setting a reciprocating air duct in the motor assembly, optimizing the airflow duct, and improving the efficiency of airflow. Of course, it should be noted that the airflow channels that run through the upper and lower parts cannot achieve better results in terms of heat dissipation and noise reduction than the existing motor components with multiple surround paths. However, such a solution can meet the heat dissipation and noise reduction requirements of the motor components while making the size of the motor components smaller, thereby increasing the installation space of other components in the main unit such as the control board, power board, etc., while ensuring the heat dissipation of the control board, power board, etc., and further optimizing the size of the main unit and the entire food processor, thereby greatly reducing the cost of the food processor and achieving a balance in cost, shape, volume, heat dissipation, and noise reduction of the food processor products, ultimately providing consumers with food processor products with no reduction in heat dissipation and noise reduction performance, good prices, and beautiful and compact shapes.

[0065] It is understandable that the upper cover can also be made directly of a flexible material, so that the upper cover itself can also play an elastic shock-absorbing effect, and then the upper cover can directly abut against the inner top wall of the upper shell without providing a sealing gasket between the upper cover and the upper shell. In this way, a shock-absorbing gasket is no longer provided between the upper cover and the lower cover, and the flexible upper cover and the lower cover are directly used to achieve a sealed fit.

[0066] It can be understood that the first mounting groove, the second mounting groove, and the third mounting groove only need to meet the requirements of clamping or abutting and fixing the upper cover, the lower cover and the motor bracket, and do not necessarily need to be provided with complete side walls and groove walls. For example, the first mounting groove or the third mounting groove may have only a protrusion on one side and a groove wall that shrinks toward the center, the upper cover or the lower cover is set at the shrinking groove wall, and the protrusion on one side abuts against the upper cover or the lower cover.

[0067] It can be understood that the upper cover and the lower cover can directly clamp and fix the motor completely without the need to provide structures such as a motor bracket and a mounting hole.

[0068] It can be understood that a sealing groove can be directly provided on the periphery of the upper cover, and the shock-absorbing pad is arranged in the sealing groove and clamped by the upper cover and the lower cover, without providing an annular wall on the upper cover.

[0069] It is understandable that other flexible components such as silicone, rubber, etc. can also be clamped between the lower cover and the lower shell.

[0070] Embodiment 2.

[0071] As a second embodiment of the food processing machine with improved heat dissipation according to the present invention, Figure 11-14 As shown, compared with the first embodiment, the upper cover and the lower cover have different installation structures. It should be noted that the specific first embodiment and the second embodiment described separately do not mean that the two embodiments are completely independent of each other, but are only for the purpose of specifically illustrating two preferred technical solutions, and the technical features and technical solutions of the two embodiments are common and can be used for reference.

[0072] like Figure 11-14 As shown, the motor assembly includes an upper cover 21, a lower cover 22 and a motor 3, and the upper cover 21 and the lower cover 22 clamp the motor 3. Preferably, a baffle 222 extending upward is provided on the periphery of the top wall of the lower cover 22, and the baffle 222 forms a mounting cavity 227 on the top wall of the lower cover 22, and a ring wall 214 extending downward is provided on the periphery of the upper cover 21, wherein the upper cover 21 is made of a flexible material, and when the upper cover 21 and the lower cover 22 are clamped and installed, the ring wall 214 is sleeved and attached to the side wall of the baffle 222 to close the heat dissipation duct inside the motor assembly.

[0073] The motor 3 is provided with a motor bracket 31, and the motor bracket 31 is provided with a mounting hole 311. Preferably, the motor assembly further includes a motor foot pad 5 arranged in the mounting hole 311, wherein the motor foot pad 5 has a mounting groove 55, and the motor bracket 31 is clamped in the mounting groove 55. When the upper cover 21 and the lower cover 22 are clamped and installed, the motor bracket 31 is placed in the mounting cavity 227 of the lower cover 22, the upper end of the motor foot pad 5 abuts against the inner top wall of the upper cover 21, and the lower end of the motor foot pad 5 abuts against the bottom wall of the mounting cavity 227 of the lower cover 22. The motor is clamped between the upper cover and the lower cover by directly using the motor foot pad, and the motor assembly is fixed to the upper shell through the through hole formed by the upper cover, the motor foot pad and the lower cover coaxially. This can simplify the installation of the motor assembly itself and the installation between the motor assembly and the upper shell. At the same time, the simplified motor foot pad structure can further compress the radial size of the motor assembly, thereby achieving the purpose of making the food processor more lightweight and compact.

[0074] The upper cover 21 is also provided with a sealing ring 217, which is arranged around the extension hole 111 and abuts against the top wall of the upper shell 11 to close the connection between the host cavity 100 and the external space at the extension hole 111, and block the heat flow and noise in the host cavity 100 from leaking out. The upper cover is directly used to form a sealing ring without the need to set up a separate sealing gasket, which reduces the number of installation accessories and the assembly error when installing accessories, making the structure more reliable.

[0075] The lower cover 22 and the lower shell 12 are provided with mutually matching fixing columns and fixing holes. Preferably, a foot pad 6 is also provided between the fixing columns and the fixing holes. The foot pad 6 is used to realize a flexible floating connection between the lower cover and the lower shell, thereby improving the installation reliability of the motor assembly. Furthermore, a sponge 43 is sandwiched between the lower cover 22 and the lower shell 12 to enhance the sealing effect between the lower cover 22 and the lower shell 12.

[0076] By changing the installation structure of the upper cover, preferably, the material of the upper cover can be changed to further optimize and compress the installation size of the motor assembly, so that the airflow flowing into the motor assembly can pass through the motor more and faster, and the heat dissipation of the motor can be more efficient. At the same time, the overall size of the motor assembly and the host can be further reduced, and the food processor can be made more portable and compact.

[0077] It is understandable that the lower cover can also be made of a flexible material so that the lower cover can be directly placed on the lower shell and flexibly floated and fixed with the lower shell. At the same time, the exhaust passage can also be directly closed between the lower cover and the lower shell.

[0078] It can be understood that the annular wall of the upper cover can also be inserted into the retaining wall of the lower cover and be arranged to fit with the inner side wall of the retaining wall.

[0079] It is understandable that the inner wall of the upper shell can extend downward around the extension hole to form a closed ring, and the closed ring abuts against the upper cover to enhance the sealing effect. It is understandable that a sealing rib can also be provided at the fitting position between the upper shell and the upper cover to enhance the sealing effect.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention and will not be listed one by one here.

Claims

1. A food processing machine with improved heat dissipation, comprising a main machine and a cup assembly mounted on the main machine, the cup assembly being provided with a crushing module, the main machine comprising a housing and a motor assembly arranged in the housing for driving the crushing module, the housing being provided with an air inlet, an air outlet and an extension hole for extending a motor shaft of the motor assembly, characterized in that: The motor assembly includes an upper cover, a lower cover and a motor. The upper cover is sealed and connected to the casing to close the extension hole. The upper cover and the lower cover clamp the motor and form a heat dissipation duct inside. The upper cover and the lower cover are respectively provided with an air inlet and an air outlet connected to the heat dissipation duct. The air inlet is located above the heat dissipation duct. Air flows into the inner cavity of the main unit from the air inlet and flows through the air inlet, the heat dissipation duct and the air outlet from top to bottom, and then flows out through the air outlet.

2. A food processor with improved heat dissipation as claimed in claim 1, characterized in that: The upper cover is provided with a sealing ring abutting against the housing, the sealing ring surrounds the extension hole to close the extension hole, and the air inlet hole is located at the outer periphery of the sealing ring.

3. A food processor with improved heat dissipation as claimed in claim 2, characterized in that: The upper cover is made of a flexible material, the sealing ring is formed by extending upward from the upper surface of the upper cover, and a plurality of air inlet holes are arranged around the sealing ring.

4. A food processor with improved heat dissipation as claimed in claim 1, characterized in that: A sealing gasket is clamped between the upper cover and the housing, and a plurality of air inlet holes are arranged at the upper end of the upper cover and surround the extension hole.

5. A food processor with improved heat dissipation as claimed in claim 1, characterized in that: The motor includes a motor bracket, which is provided with a mounting hole. The upper cover and the lower cover are respectively provided with an upper hole and a lower hole connected to the mounting hole. The motor assembly is fixedly connected to the casing through the upper hole, the mounting hole, and the lower hole that are connected in sequence.

6. A food processor with improved heat dissipation as claimed in claim 5, characterized in that: The motor assembly also includes a motor foot pad arranged in the mounting hole, a through hole is arranged at the center of the motor foot pad, and the motor foot pad is provided with an upper shock absorbing part and a lower shock absorbing part respectively abutting against the upper cover and the lower cover.

7. A food processor with improved heat dissipation as claimed in claim 6, characterized in that: The motor foot pad comprises three mounting grooves arranged in sequence along the axial direction, which are respectively clamped with the upper cover, the motor bracket and the lower cover.

8. A food processor with improved heat dissipation as claimed in claim 5, characterized in that: The periphery of the top wall of the lower cover is provided with a retaining wall extending upward, the retaining wall encloses to form an installation cavity, the motor bracket is arranged in the installation cavity, and the retaining wall abuts against the lower side of the upper cover when the upper cover and the lower cover are enclosed.

9. A food processor with improved heat dissipation as claimed in claim 1, characterized in that: A fixing column and a fixing hole that are plugged into each other are provided between the lower cover and the housing, and a foot pad is clamped between the fixing column and the fixing hole. The housing supports the motor assembly through the fixing column and the fixing hole.

10. A food processor with improved heat dissipation as claimed in claim 9, characterized in that: The bottom of the lower cover is in contact with the casing and an exhaust passage is formed between the lower cover and the casing. The exhaust passage is connected with the air outlet and the air outlet. A sponge is clamped between the lower cover and the casing.

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