Waterproof food processor

Abstract

The utility model belongs to the technical field of kitchen appliances, and particularly relates to a waterproof food processor which comprises a main machine and a cup assembly, the cup assembly comprises a cup body, a cup base, a frequency conversion brushless motor and an upper coupler electrically connected with the frequency conversion brushless motor, and a rotating shaft of the frequency conversion brushless motor extends into the cup body and is connected with a smashing cutter. A power panel and a lower coupler connected with the power panel are arranged in the main machine, the power panel is provided with an IPM module used for driving the variable-frequency brushless motor, an installation opening is formed in the bottom wall of the cup base, the upper coupler is fixed in the installation opening in a sealed mode and matched with the lower coupler in an inserted mode, and the upper end of the cup base is open and connected with the cup body in a sealed mode. A closed containing cavity is defined between the cup base and the bottom wall of the cup body, and the frequency conversion brushless motor is installed in the containing cavity. The probability that water and sundries enter the cup base is reduced through the closed containing cavity, a user can wash the cup assembly more easily, cleaning and using are convenient, meanwhile, the interior of the cup base is prevented from being moist, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and particularly relates to a waterproof food processor. Background Art

[0002] A wall-breaking cooking machine is disclosed in the prior art, which includes a base and a cup body assembly. The main control board is arranged in the base. The cup body assembly includes a cup body and a cup holder. The cup holder is provided with a support cavity and a motor fixing seat located in the support cavity. The motor is fixed on the motor fixing seat, so that the motor is connected with the cup body assembly as a whole. However, in this cooking machine, a series-wound motor is adopted, which includes a stator assembly, a rotor assembly, carbon brushes, a commutator, etc. When the motor is working, not only does the stator winding generate heat, but also a large amount of frictional heat is generated at the contact part of the carbon brushes and the commutator. Therefore, the heat dissipation requirement of the motor is relatively large.

[0003] In the prior art, by arranging a blower in the base, indoor air is sucked into the base by the blower, and then enters the cup holder through an air inlet pipe to dissipate heat from the motor. After the air flow passes through the motor, it enters the base through the air outlet holes of the base, flows through the main control board and then is discharged, realizing the heat dissipation of the motor and the main control board.

[0004] However, if the air ducts of the cup holder and the base are to be connected, first, at least two groups of ventilation openings need to be arranged on the bottom wall of the cup holder for air inlet and outlet respectively. Correspondingly, communication openings must also be arranged on the top wall of the base correspondingly, so that the inner cavities of the base and the cup holder are connected to form a heat dissipation air duct. Such an arrangement causes that when the user removes the cup body assembly from the base, the ventilation openings at the bottom of the cup holder are exposed. For example, when the user pours out some slurry and temporarily places the cup body assembly on the workbench, at this time the cup holder directly contacts the workbench. If there are small particle sundries or accumulated water on the workbench, the sundries and accumulated water will directly enter the cup holder through the ventilation openings, causing trouble for the user to clean and even interfering with the normal operation of the motor; or, when the user rinses the cup body assembly with water after use, if the operation is improper, the cleaning water will directly enter the cup holder through the ventilation openings, making the inside of the cup holder wet, reducing the service life of metal components such as the motor, and even damaging the motor. The user must strictly avoid the ventilation openings from touching water during cleaning, increasing the cleaning and use difficulty for the user and affecting the user experience.

[0005] Due to the heat dissipation requirement of the series-wound motor in the prior art, there is a contradiction between the motor heat dissipation and the product waterproofness in the existing products, and the two cannot be satisfied simultaneously. Therefore, in the prior art, only on the premise of ensuring the normal operation of the product, the waterproofness of the product is appropriately sacrificed. Summary of the Utility Model

[0006] The utility model provides a waterproof food processor, which is driven by a variable-frequency brushless motor to reduce the heat generated by the motor, and the structure of the cup holder is improved to solve the problems that the cup holder in the prior art is easy to let water and sundries in, resulting in easy damage of the motor.

[0007] The technical solution adopted by the utility model is as follows:

[0008] The utility model provides a waterproof food processor, which comprises a main body and a cup assembly detachably installed above the main body. The cup assembly comprises a cup body, a cup holder, a variable-frequency brushless motor and an upper coupler electrically connected to the variable-frequency brushless motor. The rotating shaft of the variable-frequency brushless motor extends into the cup body and is connected with a crushing knife. A power supply board and a lower coupler connected to the power supply board are arranged in the main body. The power supply board is provided with an IPM module for driving the variable-frequency brushless motor. An installation opening is formed in the bottom wall of the cup holder. The upper coupler is hermetically fixed in the installation opening and is in plug-in fit with the lower coupler. The upper end of the cup holder is open and is hermetically connected to the cup body to form a closed accommodating cavity between the bottom wall of the cup holder and the cup body. The variable-frequency brushless motor is installed in the accommodating cavity.

[0009] A waterproof food processor provided by the present utility model is driven by a variable-frequency brushless motor, and the variable-frequency brushless motor and the power supply board are respectively arranged in the cup assembly and the main body. This effectively prevents the working heat generated by the variable-frequency brushless motor and the power supply board from being superimposed. At the same time, compared with the traditional series-wound motor, the variable-frequency brushless motor has no carbon brush friction heat, which reduces the working heat and the heat dissipation requirement. On this basis, by sealing and fixing the upper coupler in the installation port, on the one hand, it ensures the bonding strength between the upper coupler and the installation port, preventing loosening due to the frequent plugging and unplugging of the upper coupler with the lower coupler, and on the other hand, it avoids water ingress into the installation port, improving the waterproof and dustproof performance of the cup base. Further, the upper end of the cup base is open and is hermetically connected to the cup body to form a closed accommodation cavity between the bottom wall of the cup base and the cup body. The variable-frequency brushless motor is installed in the accommodation cavity. The cup bottom and the cup body form a closed accommodation cavity, blocking the flow between the inside and outside of the accommodation cavity. Therefore, the closed accommodation cavity effectively prevents water and debris from entering the cup base. Users can more easily rinse the cup assembly, which is convenient for cleaning and use. At the same time, it prevents the inside of the cup base from getting wet, prolonging the service life of the motor. In addition, the closed accommodation cavity can isolate the noise generated by the vibration during the operation of the motor inside the accommodation cavity, preventing the noise from spreading outwards, thereby also reducing the overall working noise of the machine and providing a quieter use experience. It should be noted that there are technical solutions in the prior art that use a variable-frequency brushless motor to drive the crushing knife. However, in the prior art, the variable-frequency brushless motor and the corresponding IPM module are both arranged in the machine base, and there is no solution to simply replace the motor in the cup assembly with a variable-frequency brushless motor. Therefore, although the variable-frequency brushless motor is significantly superior to the traditional series-wound motor in terms of noise and heat generation, the variable-frequency brushless motor requires a dedicated IPM module for driving, and only better driving can fully utilize the technical advantages of the variable-frequency brushless motor, which also creates a certain technical barrier for the variable-frequency brushless motor. Based on the full research of the variable-frequency brushless motor and IPM drive, the applicant disassembles the IPM module and the variable-frequency brushless motor, arranges the IPM module in the main body, and arranges the variable-frequency brushless motor in the cup assembly, respectively giving full play to their own advantages. Further, the two heat sources of the IPM module and the variable-frequency brushless motor are disassembled, and then a sealing structure is set for the cup assembly where the variable-frequency brushless motor is installed, achieving noise reduction, heat dissipation, and improving the overall safety of the cup assembly.

[0010] In a preferred embodiment, the variable-frequency brushless motor includes a motor housing, a stator fixed inside the motor housing, and a rotor cooperating with the stator. A heat dissipation cavity is formed inside the motor housing, and the heat dissipation cavity communicates with the accommodation cavity to form an internal circulation air duct.

[0011] The variable-frequency brushless motor includes a motor housing, a stator, and a rotor. A heat dissipation cavity is provided inside the motor housing, which can concentrate the air flow and make it flow along a specific path, that is, the air flow flows in the internal circulation air duct formed by the communication of the heat dissipation cavity and the accommodation cavity, playing a role in dissipating heat from the variable-frequency brushless motor, effectively reducing the temperature rise of the motor in high-load working scenarios, and further making the motor operate stably. Therefore, on the basis of achieving the purpose of effectively waterproofing and dustproofing the cup holder, it can also prevent the motor from overheating and stabilize the motor performance.

[0012] In a preferred embodiment, the variable-frequency brushless motor includes a heat dissipation sleeve sleeved outside the motor housing. The heat dissipation sleeve is provided with an air inlet and an air outlet, and the heat dissipation cavity, the inner cavity of the heat dissipation sleeve and the accommodation cavity communicate to form the internal circulation air duct.

[0013] By sleeving a heat dissipation sleeve outside the motor housing of the variable-frequency brushless motor, the heat dissipation sleeve is further used to concentrate the air flow, making the air flow flow orderly along the internal circulation air duct, thereby realizing efficient heat exchange with the stator and the rotor, further improving the heat dissipation effect of the motor, improving the temperature rise of the variable-frequency brushless motor during high-load operation, and stabilizing the motor performance.

[0014] In a preferred embodiment, the variable-frequency brushless motor further includes a fan driven by a rotating shaft.

[0015] The variable-frequency brushless motor further includes a fan driven by a rotating shaft. The fan can be used to accelerate the air flow velocity in the internal circulation air duct, improving the heat exchange efficiency between the air flow and the stator and the rotor. The fan is driven by the rotating shaft, which can simplify the structure of the fan, and the fan starts and stops with the start and stop of the rotating shaft. When the variable-frequency brushless motor starts to heat up after starting, the fan can work in time to drive the air flow to dissipate heat from the stator and the rotor, and the heat dissipation is more timely and efficient.

[0016] In a preferred embodiment, a fixing opening for the lower coupler to be exposed is provided on the top wall of the main body. The lower coupler is in sealed cooperation with the fixing opening, and the main body defines a closed installation cavity to accommodate the power supply board.

[0017] By providing a fixing hole on the top wall of the main body and the lower coupler being in sealed cooperation with the fixing opening to define a closed installation cavity in the main body to accommodate the power supply board, the waterproofing and dustproofing of the main body are realized, effectively protecting the power supply board from being damaged by water and prolonging the service life of the power supply board.

[0018] In a preferred embodiment, the power supply board is horizontally arranged in the installation cavity;

[0019] By horizontally placing the power supply board in the installation cavity, the height of the host can be reduced, which is beneficial to lowering the center of gravity of the whole machine, making the whole machine work stably, reducing noise, and moreover, reducing the vertical occupied space of the whole machine, and also facilitating the user to take the cup assembly.

[0020] In a preferred embodiment, heat dissipation fins covering the IPM module are provided on the power supply board.

[0021] By providing heat dissipation fins, the surface area of contact between the IPM module and the air is increased, which helps to more effectively dissipate the heat generated by the IPM module into the surrounding environment, reduce the temperature of the IPM module, and improve its working efficiency and reliability. The heat dissipation fins can also help the heat to be more evenly distributed over the entire IPM module, avoid local overheating, achieve uniform heat dissipation, and extend the service life of the power supply board.

[0022] In a preferred embodiment, the side wall of the cup body includes a main body section and a contraction section that contracts inward relative to the main body section. A step surface is formed between the main body section and the contraction section. The cup holder is sleeved and fixed on the outside of the contraction section. A first sealing ring is sleeved outside the step surface, and the cup holder and the step surface clamp the first sealing ring.

[0023] By setting the cup body to include a main body section and a contraction section, and using the contraction section to sleeve the cup holder, it is possible to avoid an overly large outer diameter at the position of the cup holder, which is beneficial to reducing the radial size of the entire cup assembly. In addition, the contraction section contracts relative to the main body section, forming a step surface between the main body section and the contraction section. A first sealing ring is sleeved outside the step surface, and the cup holder and the step surface clamp the first sealing ring. On the one hand, the step surface provides axial limitation to the cup holder, making the fixation between the cup holder and the cup body more reliable. On the other hand, by using the step surface and the cup holder to clamp the first sealing ring, the first sealing ring is more reliably positioned between the cup holder and the cup body, realizing a reliable sealed connection between the cup holder and the cup body, thereby achieving a reliable seal of the accommodation cavity, improving the waterproof and dustproof performance of the cup assembly. Moreover, the first sealing ring makes a flexible connection between the cup holder and the cup body, reducing the collision noise at this connection part during the operation of the whole machine and reducing the noise of the whole machine.

[0024] In a preferred embodiment, the cup body includes a cup body with open upper and lower ends and a heating plate sealed at the bottom of the cup body. The cup holder includes a sleeved portion sleeved and fixed with the cup body and a step portion extending inward from the sleeved portion. The edge of the heating plate is clamped between the step portion and the lower end surface of the cup body.

[0025] Adopt a cup body with open tops and bottoms, which is convenient for the demolding and manufacturing of the glass cup body. Enclose the heating plate at the bottom of the cup body to achieve uniform heating of the liquid in the cup body. The cup base includes a socket part fixedly sleeved with the cup body and a step part extending inward from the socket part. The edge of the heating plate is hermetically clamped between the step part and the lower end surface of the cup body. That is, during the assembly process, the heating plate can be supported by the step part, and the heating plate is hermetically clamped as the cup base and the cup body are fixed, realizing reliable positioning and sealing, and efficient assembly.

[0026] In a preferred embodiment, one of the inner side wall of the socket part and the outer side wall of the cup body is provided with a rotary buckle, and the other is provided with a buckle groove, and the rotary buckle is rotationally engaged with the buckle groove;

[0027] In a preferred embodiment, the inner side wall of the socket part is provided with an internal thread, and the outer side wall of the cup body is provided with an external thread that cooperates with the internal thread.

[0028] Adopting the way of rotational engagement between the rotary buckle and the buckle groove and the way of thread cooperation can both achieve reliable fixation of the cup body and the cup base, make the heating plate fixed reliably, and at the same time save the fixation with additional parts, making the assembly and disassembly more convenient.

[0029] In a preferred embodiment, the food processor further includes a second sealing ring, and the second sealing ring is clamped between the step part and the heating plate and integrally extends between the heating plate and the cup body.

[0030] The second sealing ring is clamped between the step part and the heating plate to seal the mating gap between the cup base and the heating plate. The second sealing ring integrally extends between the heating plate and the cup body, that is, the second sealing ring synchronously seals the heating plate and the cup body. Therefore, the structure is integrated, the structure of the whole machine is simplified, while improving the mating tightness between the cup base, the heating plate and the cup body, it is also convenient for assembly and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0032] Figure 1 is a schematic structural diagram of a food processor in an embodiment of the present invention;

[0033] Figure 2 is a schematic cross-sectional structural diagram of a cup assembly in an embodiment of the present invention;

[0034] Figure 3The bottom view of the cup assembly in an embodiment of the present utility model;

[0035] Figure 4 The exploded structural schematic diagram of the main body in an embodiment of the present utility model;

[0036] Figure 5 The sectional structural schematic diagram of the main body in an embodiment of the present utility model.

[0037] Explanation of reference numerals: 10, main body; 101, housing; 102, base; 103, operation panel assembly; 11, power board; 12, lower coupler; 111, IPM module; 20, cup assembly; 21, cup body; 211, main body section; 212, contraction section; 213, stepped surface; 214, first sealing ring; 215, cup body; 216, heating plate; 217, stepped portion; 218, second sealing ring; 22, cup base; 221, accommodation cavity; 23, variable frequency brushless motor; 231, motor housing; 232, stator; 233, rotor; 234, heat dissipation cavity; 235, internal circulation air duct; 236, heat dissipation sleeve; 237, fan; 24, mounting opening; 25, upper coupler; 26, crushing knife. Detailed implementation manners

[0038] In order to more clearly illustrate the overall concept of the present utility model, the following will be described in detail by way of examples in conjunction with the accompanying drawings of the specification.

[0039] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below. It should be noted that, without conflict, the embodiments of the present utility model and the features in each embodiment can be combined with each other.

[0040] In addition, in the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model.

[0041] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature can 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 terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0043] As Figures 1-5 shown, the present utility model provides a waterproof food processor, including a main body 10 and a cup assembly 20 detachably installed above the main body 10. As Figures 1-3 shown, the cup assembly 20 includes a cup body 21, a cup base 22, a variable frequency brushless motor 23, and an upper coupler 25 electrically connected to the variable frequency brushless motor 23. The rotating shaft of the variable frequency brushless motor 23 extends into the cup body 21 and is connected with a crushing knife 26. A power supply board 11 and a lower coupler 12 connected to the power supply board 11 are provided in the main body 10. The power supply board 11 is provided with an IPM module 111 for driving the variable frequency brushless motor 23. An installation opening 24 is formed in the bottom wall of the cup base 22, and the upper coupler 25 is hermetically fixed in the installation opening 24 and is in plug-in fit with the lower coupler 12. The upper end of the cup base 22 is open and is hermetically connected to the cup body 21 to form a sealed accommodation cavity 221 between the bottom walls of the cup base 22 and the cup body 21, and the variable frequency brushless motor 23 is installed in the accommodation cavity 221.

[0044] A waterproof food processor provided by the present utility model is driven by a variable-frequency brushless motor 23. The variable-frequency brushless motor 23 and the power supply board 11 are respectively arranged in the cup assembly 20 and the main body 10, effectively preventing the superposition of the working heat generated by the variable-frequency brushless motor 23 and the power supply board 11. At the same time, compared with the traditional series-excited motor, the variable-frequency brushless motor 23 has no carbon brush friction heat, reducing the working heat and the heat dissipation requirement. On this basis, by hermetically fixing the upper coupler 25 in the mounting opening 24, on the one hand, the bonding strength between the upper coupler 25 and the mounting opening 24 is ensured, preventing loosening due to the frequent plugging and unplugging of the upper coupler 25 with the lower coupler 12, and on the other hand, preventing water from entering the mounting opening 24, improving the waterproof and dustproof performance of the cup base 22. Further, the upper end of the cup base 22 is open and is hermetically connected to the cup body 21 to form a closed receiving cavity 221 between the bottom walls of the cup base 22 and the cup body 21. The variable-frequency brushless motor 23 is installed in the receiving cavity 221. Therefore, the closed receiving cavity 221 reduces the probability of water and sundries entering the cup base 22. The user can more easily rinse the cup assembly 20, which is convenient for cleaning and use. At the same time, it prevents the inside of the cup base 22 from getting wet and extends the service life of the motor. In addition, the closed receiving cavity 221 can isolate the noise generated by the vibration during the operation of the motor inside the receiving cavity 221, preventing the noise from spreading outwards, thereby reducing the overall machine operation noise and providing a quieter use experience.

[0045] As Figure 2 shown, in a preferred embodiment, the variable-frequency brushless motor 23 includes a motor housing 231, a stator 232 fixed inside the motor housing 231, and a rotor 233 cooperating with the stator 232. A heat dissipation cavity 234 is formed inside the motor housing 231, and the heat dissipation cavity 234 communicates with the receiving cavity 221 to form an internal circulation air duct 235. More preferably, as Figure 3 shown, the variable-frequency brushless motor 23 includes a heat dissipation sleeve 236 sleeved outside the motor housing 231. The heat dissipation sleeve 236 is provided with an air inlet and an air outlet. The heat dissipation cavity 234, the inner cavity of the heat dissipation sleeve 236 and the receiving cavity 221 communicate to form an internal circulation air duct 235.

[0046] The variable-frequency brushless motor 23 includes a motor housing 231, a stator 232, and a rotor 233. A heat dissipation cavity 234 is arranged inside the motor housing 231, which can make the air flow concentrated and flow along a specific path, that is, the air flow flows in the internal circulation air duct 235 formed by the communication between the heat dissipation cavity 234 and the accommodation cavity 221, playing a role in dissipating heat from the variable-frequency brushless motor 23, and can effectively reduce the temperature rise of the motor in high-load working scenarios, further making the motor operate stably. Therefore, on the basis of achieving the purpose of effectively waterproofing and dustproofing the cup holder 22, it can also avoid the motor from overheating and stabilize the motor performance. By sleeving a heat dissipation sleeve 236 outside the motor housing 231 of the variable-frequency brushless motor 23, the heat dissipation sleeve 236 is used to further achieve the effect of concentrating the air flow, so that the air flow flows orderly along the internal circulation air duct 235, as Figure 3 shown by the arrow in, so as to realize efficient heat exchange with the stator 232 and the rotor 233, further improve the heat dissipation effect of the motor, improve the temperature rise of the variable-frequency brushless motor 23 during high-load operation, and stabilize the motor performance.

[0047] As Figure 2 shown, in a more preferred embodiment, the variable-frequency brushless motor 23 further includes a fan 237 driven by a rotating shaft.

[0048] The variable-frequency brushless motor 23 further includes a fan driven by a rotating shaft. The fan can be used to accelerate the air flow velocity in the internal circulation air duct 235, so that the heat exchange efficiency between the air flow and the stator 232 and the rotor 233 is improved. The fan is driven by the rotating shaft, which can simplify the structure of the fan, and the fan starts and stops with the start and stop of the rotating shaft. When the variable-frequency brushless motor 23 starts to heat up after starting, the fan can work in time to drive the air flow to dissipate heat from the stator 232 and the rotor 233, and the heat dissipation is more timely and efficient.

[0049] It should be noted that the present invention does not limit the installation position of the fan. For example, the fan can be arranged inside the motor housing 231 or inside the heat dissipation sleeve 236. Of course, in fact, a fan can also be separately arranged in the cup holder 22, and the fan is independently driven and not connected to the rotating shaft.

[0050] As Figure 1 、 4 、5 shown, in a preferred embodiment, a fixing port 104 for the lower coupler 12 to be exposed is provided on the top wall of the host 10, and the lower coupler 12 is in sealed cooperation with the fixing port. The host 10 defines a sealed installation cavity to accommodate the power supply board 11. Preferably, the power supply board 11 is horizontally arranged in the installation cavity.

[0051] Preferably, as Figure 4 shown, the host 10 includes a housing 101 and a base 102. The power supply board 11 is arranged in the installation cavity surrounded by the housing 101 and the base 102. The host 10 further includes an operation panel assembly 103 arranged vertically.

[0052] By providing fixing holes on the top wall of the main body 10 and making the lower coupler 12 fit tightly with the fixing port 104, and applying glue at the mating position of the lower coupler 12 and the fixing port, a sealed installation cavity is defined within the main body 10 to accommodate the power supply board 11, thereby achieving waterproof and dustproof functions for the main body 10, effectively protecting the power supply board 11 from water damage, and extending the service life of the power supply board 11. By horizontally placing the power supply board 11 in the installation cavity, the height of the main body 10 can be reduced, which is beneficial to lowering the center of gravity of the whole machine, making the whole machine operate stably, reducing noise, and moreover, reducing the vertical occupied space of the whole machine, and also facilitating the user to take the cup assembly 20.

[0053] Combined with Figure 5 , considering the heat generation during the operation of the IPM module, the IPM module 111 of the power supply board 11 can achieve heat dissipation through the self - characteristic of the upward movement of the hot air flow from bottom to top. Since the power supply board and the variable - frequency brushless motor are respectively arranged in the main body and the cup holder, it prevents the superposition of the heat of the two, which is beneficial to heat dissipation.

[0054] More preferably, heat - dissipating fins (not shown) covering the IPM module 111 are provided on the power supply board 11.

[0055] By providing the heat - dissipating fins, the surface area of contact between the IPM module 111 and the air is increased, which helps to more effectively dissipate the heat generated by the IPM module into the surrounding environment, reduce the temperature of the IPM module, improve its working efficiency and reliability. The heat - dissipating fins can also help the heat to be more evenly distributed over the entire IPM module, avoid local overheating, achieve uniform heat dissipation, and extend the service life of the power supply board 11.

[0056] In addition, it should be noted that the present utility model does not limit the sealing connection method between the cup holder and the cup body. As Figure 2 shown, in a preferred embodiment, the side wall of the cup body 21 includes a main body section 211 and a contraction section 212 that contracts inward relative to the main body section 211. A stepped surface 213 is formed between the main body section 211 and the contraction section 212. The cup holder 22 is sleeved and fixed on the outside of the contraction section 212. A first sealing ring 214 is sleeved outside the stepped surface 213, and the cup holder 22 and the stepped surface 213 clamp the first sealing ring 214.

[0057] Preferably, the cup body 21 includes a cup body 215 with openings at both the top and bottom and a heating plate 216 closed at the bottom of the cup body 215. The cup holder 22 includes a sleeved portion sleeved and fixed with the cup body 215 and a stepped portion 217 extending inward from the sleeved portion. The edge of the heating plate 216 is clamped between the stepped portion 217 and the lower end surface of the cup body 215.

[0058] By setting the cup body 21 to include a main body section 211 and a contraction section 212, and using the contraction section 212 to sleeved the cup base 22, it is possible to avoid the excessive outer diameter at the position of the cup base 22, which is beneficial to reducing the radial dimension of the entire cup assembly 20. In addition, the contraction section 212 contracts relative to the main body section 211, forming a step surface 213 between the main body section 211 and the contraction section 212. A first sealing ring 214 is sleeved outside the step surface 213, and the cup base 22 and the step surface 213 clamp the first sealing ring 214. On the one hand, the step surface 213 axially limits the cup base 22, making the fixation of the cup base 22 and the cup body 21 more reliable. On the other hand, by clamping the first sealing ring 214 with the step surface 213 and the cup base 22, the first sealing ring 214 is more reliably positioned between the cup base 22 and the cup body 21, realizing a reliable sealed connection between the cup base 22 and the cup body 21, thereby realizing the reliable sealing of the accommodating cavity 221, improving the waterproof and dustproof performance of the cup assembly 20. Moreover, the first sealing ring 214 makes a flexible connection between the cup base 22 and the cup body 21, reducing the collision noise at this connection part during the operation of the whole machine and reducing the noise of the whole machine.

[0059] Adopting a cup body 215 with open upper and lower ends is convenient for the demolding and manufacturing of the glass cup body 21. The heating plate 216 is enclosed at the bottom of the cup body 215 to realize uniform heating of the liquid in the cup body 21. The cup base 22 includes a sleeved part sleeved and fixed with the cup body 215 and a step part 217 extending inward from the sleeved part. The edge of the heating plate 216 is hermetically clamped between the step part 217 and the lower end surface of the cup body 215, that is, during the assembly process, the heating plate 216 can be supported by the step part 217, and the heating plate 216 is hermetically clamped as the cup base 22 and the cup body 215 are fixed, realizing reliable positioning and sealing, and high-efficiency assembly.

[0060] Of course, the cup body 21 of the present utility model is not limited to the above-mentioned cup body 215 with open upper and lower ends. In fact, in other embodiments, the cup body 21 is a bottom-closed cup body 21 including a cup body 215 and a cup bottom. A heating tube is fixed at the cup bottom to heat the liquid in the cup body 21, and the cup base 22 is directly sleeved on the lower part of the cup body 215.

[0061] Regarding the specific fixing method of the cup base and the cup body, in a preferred embodiment, one of the inner side wall of the sleeved part and the outer side wall of the cup body 215 is provided with a rotary buckle, and the other is provided with a buckle groove, and the rotary buckle and the buckle groove are rotationally engaged; of course, in other embodiments, the inner side wall of the sleeved part is provided with an internal thread, and the outer side wall of the cup body 215 is provided with an external thread matching the internal thread.

[0062] Adopting the method of mutual rotational engagement of the rotary buckle and the buckle groove and the method of thread engagement can both realize the reliable fixation of the cup body 215 and the cup base 22, making the heating plate 216 fixed reliably, and at the same time saving the need for fixing with additional parts, making the assembly and disassembly more convenient.

[0063] As Figure 2 shown, in a preferred embodiment, the food processor further includes a second sealing ring 218, which is clamped between the stepped portion 217 and the heating plate 216 and integrally extends between the heating plate 216 and the cup body 215.

[0064] The second sealing ring is clamped between the stepped portion 217 and the heating plate 216 to seal the mating gap between the cup base 22 and the heating plate 216. The second sealing ring integrally extends between the heating plate 216 and the cup body 215, that is, the second sealing ring synchronously seals the heating plate 216 and the cup body 215. Therefore, the structure is integrated, the structure of the whole machine is simplified, the mating sealing performance between the cup base 22, the heating plate 216, and the cup body 215 is improved, and the assembly is convenient while the cost is reduced.

[0065] What is not described in the present utility model can be achieved by adopting or referring to the existing technology.

[0066] Each embodiment in this specification is described in a progressive manner. The same or similar parts between the embodiments can be referred to each other, and the differences between each embodiment and other embodiments are emphasized.

[0067] The above are only the embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the scope of the claims of the present utility model.

Claims

1. A waterproof food processor, comprising a main body and a cup assembly detachably mounted above the main body, characterized in that, The cup assembly includes a cup body, a cup base, a variable-frequency brushless motor, and an upper coupler electrically connected to the variable-frequency brushless motor. The rotating shaft of the variable-frequency brushless motor extends into the cup body and is connected with a crushing knife. A power supply board and a lower coupler connected to the power supply board are arranged in the main body. The power supply board is provided with an IPM module for driving the variable-frequency brushless motor. An installation opening is formed in the bottom wall of the cup base. The upper coupler is hermetically fixed in the installation opening and is in plug-in fit with the lower coupler. The upper end of the cup base is open and is hermetically connected to the cup body to form a sealed accommodation cavity between the bottom wall of the cup base and the cup body. The variable-frequency brushless motor is installed in the accommodation cavity.

2. A waterproof food processor according to claim 1, wherein, The variable-frequency brushless motor includes a motor housing, a stator fixed in the motor housing, and a rotor cooperating with the stator. A heat dissipation cavity is formed inside the motor housing, and the heat dissipation cavity communicates with the accommodation cavity to form an internal circulation air duct.

3. A waterproof food processor according to claim 2, wherein, The variable-frequency brushless motor includes a heat dissipation sleeve sleeved outside the motor housing. The heat dissipation sleeve is provided with an air inlet and an air outlet. The heat dissipation cavity, the inner cavity of the heat dissipation sleeve, and the accommodation cavity communicate to form the internal circulation air duct.

4. A waterproof food processor according to claim 2, wherein The variable-frequency brushless motor further includes a fan driven by the rotating shaft.

5. A waterproof food processor according to claim 1, characterized in that, A fixing opening for the lower coupler to be exposed is arranged on the top wall of the main body. The lower coupler is in sealed fit with the fixing opening. The main body defines a sealed installation cavity to accommodate the power supply board.

6. A waterproof food processor according to claim 5, characterized in that, The power supply board is horizontally arranged in the installation cavity; Or, heat dissipation fins covering the IPM module are arranged on the power supply board.

7. A waterproof food processor according to claim 1, wherein, The side wall of the cup body includes a main body section and a contraction section that contracts inward relative to the main body section. A step surface is formed between the main body section and the contraction section. The cup base is sleeved and fixed outside the contraction section. A first sealing ring is sleeved outside the step surface, and the cup base and the step surface clamp the first sealing ring.

8. A waterproof food processor according to claim 1, wherein, The cup body includes a cup body with upper and lower openings and a heating plate sealed at the bottom of the cup body. The cup base includes a sleeved portion sleeved and fixed with the cup body and a step portion extending inward from the sleeved portion. The edge of the heating plate is hermetically clamped between the step portion and the lower end surface of the cup body.

9. A waterproof food processor according to claim 8, wherein, One of the inner side wall of the sleeved portion and the outer side wall of the cup body is provided with a rotary buckle, and the other is provided with a buckle groove. The rotary buckle is in rotary engagement with the buckle groove; Or, an internal thread is arranged on the inner side wall of the sleeved portion, and an external thread cooperating with the internal thread is arranged on the outer side wall of the cup body.

10. A waterproof food processor according to claim 8, characterized in that, The food processor further includes a second sealing ring, and the second sealing ring is clamped between the step portion and the heating plate and integrally extends between the heating plate and the cup body.

Images