Motor and kitchen waste equipment

Abstract

The utility model discloses a motor and kitchen waste equipment, the motor comprises a rotor assembly and a stator assembly, a rotor iron core of the rotor assembly is provided with 2P series permanent magnets, and the number of poles 2P satisfies: 10 < = 2P < = 20; a stator core of the stator assembly is provided with M grooves, the number M of the grooves is larger than or equal to 12 and smaller than or equal to 24, and the common multiple of the groove poles is the maximum value. Therefore, the motor can optimize the performance of the internal rotor assembly and the stator assembly, the motor can be lighter and thinner, the lightening and thinning trend of the motor is met, and the working performance of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the field of kitchen waste treatment devices, in particular to a motor and kitchen waste equipment. Background Art

[0002] With the development of science and technology, people's requirements for the performance of household appliances are constantly increasing. As the power source of electrical appliances, the size and weight of motors have become one of the key factors limiting the performance improvement of household appliances. At present, some household appliances on the market, such as food waste disposers, often use brushed DC motors or induction motors as power. In order to ensure a larger power output, it is usually necessary to increase the size of the motor, and the weight increases accordingly. It is also proposed to use gear transmission to increase power, but gear transmission often also brings about an increase in noise. In recent years, some have also used brushless DC motors as power. They are slightly smaller than brushed DC motors, and the outer diameter of the motor core is mostly no more than 95mm. In order to obtain sufficient working torque required by the equipment, it is usually achieved by increasing the thickness of the core.

[0003] In the related technologies, brushed DC motors, induction motors and brushless DC motors all have the problem of increased size and weight under low speed and high torque conditions, which causes the motor installation to occupy more space, and causes greater load and increased cost, reducing the user experience. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a motor that can optimize the performance of the internal rotor assembly and stator assembly, and can improve the motor's lightweight performance and working performance.

[0005] The utility model also provides a kitchen waste device having the motor.

[0006] According to the motor of the first aspect of the utility model, the motor includes: a rotor assembly and a stator assembly, the rotor core of the rotor assembly has 2P stages, and the pole number 2P satisfies: 10≤2P≤20; the stator core of the stator assembly has M slots, the slot number M satisfies: 12≤M≤24, and the slot-pole common multiple is selected as the maximum value.

[0007] According to the motor of the utility model, by limiting the number of poles 2P within the range of 10 to 20, the number of slots M within the range of 12 to 24, and selecting the lowest common multiple of the number of slots and the number of poles as much as possible, the performance of the rotor assembly and the stator assembly can be optimized, so that on the basis of ensuring a large output torque of the motor, the volume and weight of the motor can be optimized, the motor can be made thinner and lighter, meeting the trend of thinner motors, and improving the working performance of the motor, and can save economic costs, which can effectively improve the user experience.

[0008] According to some embodiments of the present utility model, the motor further includes: a first shell and a second shell, the first shell and the second shell define a accommodating cavity, and the rotor assembly and the stator assembly are both disposed in the accommodating cavity.

[0009] Furthermore, the motor further comprises: a limiting structure, which is disposed in the first housing and is adapted to cooperate with the stator assembly to limit the circumferential rotation of the stator assembly.

[0010] Furthermore, the stator assembly is sleeved on the rotor assembly, and the stator assembly and the first shell participate in defining the limiting structure.

[0011] In some embodiments, the limiting structure includes a limiting column, a first slot and a second slot, the limiting column is arranged between the stator assembly and the first shell, the first slot is formed in the stator assembly, the second slot is formed in the first shell, and at least a portion of the limiting column is located in the first slot, and at least another portion is located in the second slot.

[0012] Furthermore, a diameter D1 of the equivalent cylindrical hole defined by the first groove and the second groove satisfies: 2mm≤D1≤5mm.

[0013] In some embodiments, the chord height of the first slot is H1, and the width L of the yoke of the stator core of the stator assembly satisfies: 1 / 8≤H1 / L≤1 / 4.

[0014] According to some embodiments of the present utility model, the center line of the teeth of the stator core coincides with the center line of the first slot when projected in the radial direction of the motor.

[0015] According to some embodiments of the present invention, the diameter of the stator core is 100 mm to 150 mm.

[0016] Furthermore, a ratio K of the diameter of the stator core to the thickness of the stator core satisfies: 5≤K≤15.

[0017] According to the kitchen waste device of the second aspect of the embodiment of the utility model, the kitchen waste device includes: the motor described in any one of the above embodiments.

[0018] Furthermore, the kitchen waste device has a kitchen waste crushing chamber, which is formed in the second shell of the motor and is located on a side of the second shell away from the accommodating chamber.

[0019] Furthermore, the inner diameter of the kitchen waste crushing chamber is D2, the outer diameter of the stator assembly is D3, and the following relationship is satisfied: 0.7≤D3 / D2≤1.

[0020] In summary, the motor of the utility model includes a rotor assembly, a stator assembly, a first shell, a second shell and a limiting structure. Among them, the rotor core of the rotor assembly has 2P levels, and the pole number 2P satisfies: 10≤2P≤20; the stator core of the stator assembly has M slots, the slot number M satisfies: 12≤M≤24, and the slot-pole common multiple is selected as the maximum value; the first shell and the second shell define a receiving cavity, and the rotor assembly and the stator assembly are both arranged in the receiving cavity; the limiting structure is arranged in the first shell, and is suitable for cooperating with the stator assembly to limit the circumferential rotation of the stator assembly. By limiting the number of poles 2P to 10 to 20, the number of slots M to 12 to 24, and selecting the minimum common multiple of the number of slots and the number of poles as much as possible, the volume and weight of the motor can be optimized on the basis of ensuring a large output torque of the motor, so that the motor can be improved in terms of lightness and thinness and working performance, and can save economic costs, and can effectively improve the user experience. The limiting structure can limit the circumferential rotation of the stator assembly, and can prevent the stator assembly from slipping due to the interaction force between the rotor assembly and the stator assembly when the motor is working. It can effectively improve the operating stability of the stator assembly and enhance the working reliability of the motor.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic cross-sectional view of a kitchen waste device according to some embodiments of the present utility model;

[0024] Figure 2 is an exploded view of a kitchen waste device according to some embodiments of the present utility model;

[0025] Figure 3 It is a schematic diagram of a limiting structure, a stator assembly and a first housing according to some embodiments of the utility model;

[0026] Figure 4 It is a cross-sectional view of the cooperation between the limiting structure, the stator assembly and the first housing according to some embodiments of the utility model;

[0027] Figure 5 It is an axial cross-sectional view of the limiting structure, the stator assembly and the first housing according to some embodiments of the utility model;

[0028] Figure 6 It is a schematic cross-sectional view of a stator core according to some embodiments of the utility model.

[0029] Reference numerals:

[0030] Kitchen waste equipment 1;

[0031] Rotor assembly 111, rotating shaft 1111;

[0032] Stator assembly 112, stator core 1121, teeth 11211, yoke 11212;

[0033] A first housing 113;

[0034] A second housing 114;

[0035] Limiting column 1151, first groove 115a, second groove 115b;

[0036] Accommodating chamber 11a, kitchen waste crushing chamber 11b, and discharge port 11c;

[0037] The cutter disc 12 , the first cutter disc 121 , the second cutter disc 122 , the bolts 13 , the bolt cover 14 , the third housing 15 , the feed port 15 a , the fourth housing 16 , the sealing ring 17 , the shaft sleeve 18 , and the oil seal 19 . DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0040] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0041] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0043] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0046] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0047] The term "plurality" used in the present application refers to two or more (including two).

[0048] Reference below Figure 1-Figure 6The motor and the kitchen waste device 1 according to the embodiments of the present invention are described.

[0049] like Figure 1 As shown, the motor according to the embodiment of the first aspect of the utility model includes: a rotor assembly 111 and a stator assembly 112 .

[0050] Among them, the rotor core of the rotor assembly 111 has 2P stages, and the pole number 2P satisfies: 10≤2P≤20; the stator core 1121 of the stator assembly 112 has M slots, and the slot number M satisfies: 12≤M≤24, and the slot-pole common multiple is selected as the maximum value.

[0051] Specifically, the rotor assembly 111 and the stator assembly 112 are both arranged in the motor. After being energized, the rotor assembly 111 and the stator assembly 112 can generate an interacting magnetic field. The rotor assembly 111 rotates due to the electromagnetic force, so that the motor can convert electrical energy into mechanical energy output. When selecting the values ​​of the number of poles 2P and the number of slots M, the rotor assembly 111 and the stator assembly 112 are selected to maximize the least common multiple of the number of slots and the number of poles. The least common multiple of the slot-pole is increased, so that the cogging torque during the operation of the motor can be reduced, thereby reducing vibration and improving the working performance of the motor. In the utility model, the number of poles 2P satisfies: 10≤2P≤20, and the number of slots M satisfies: 12≤M≤24. For example, the number of slots can be constructed as 18 slots, and the number of stages can preferably be 16 poles or 20 poles.

[0052] It should be pointed out that the number of stages 2P of the above-mentioned rotor core, when 2P<10, the motor needs a larger volume to achieve the same torque, and when 2P>20, more poles are needed, more permanent magnets are needed, which will lead to increased production efficiency and cost; correspondingly, the number of slots M of the above-mentioned stator core 1121, when M<12, the number of turns per slot is large, the winding end of the stator assembly 112 is high, and the end loss is large, which affects the efficiency of the motor, and when M>24, the number of slots is large, the winding efficiency is slow, and the area utilization rate of each slot is low. Therefore, by setting the number of poles and slots within the above-mentioned conditions, when the motor outputs the same torque, the motor volume and weight can be optimized and the production cost can be saved.

[0053] In addition, in the related art, the working cavity diameter of the kitchen waste equipment 1 is generally 100-200mm, the working speed is generally 1500-3500r / min, the motor output power needs to be 400-800W, the kitchen waste equipment 1 has a low working speed and a large torque, so the motor needs to be designed according to the method of low speed and high torque. According to the motor design principle, the electromagnetic torque T of the motor is related to the torque coefficient K and the armature current I, and the relationship between the three is T / K=I. To increase the motor torque, the method of increasing the torque coefficient K or the armature current I can be used, but the increase in armature current will lead to increased copper loss, increased heat, and temperature rise, and the method of increasing the armature current has limited effect on increasing the torque, so the best way is to increase the torque coefficient K. The torque coefficient K is related to the torque constant C and the main magnetic flux per pole Φ, and the relationship between the three is K / C=Φ. Increasing the torque constant C or the main magnetic flux per pole Φ can increase the torque coefficient K, but since increasing the main magnetic flux per pole Φ requires increasing the magnetic induction intensity, it is necessary to increase the grade of magnetic material when the rotor core material remains unchanged, which will increase the material cost. Therefore, it is preferred to increase the torque constant C. Furthermore, the torque constant C is positively correlated with the number of stages 2P and the total number of turns N of the armature winding. In order to increase the torque, since N is limited by the motor slot area, increasing N will reduce the diameter of the enameled wire, increase the resistance, and increase the loss, so increasing the number of poles 2P is a more effective way.

[0054] According to the motor of the present invention, by limiting the number of poles 2P within the range of 10 to 20, limiting the number of slots M within the range of 12 to 24, and selecting the slots and the poles in such a way as to maximize the least common multiple, the performance of the rotor assembly 111 and the stator assembly 112 can be optimized, so that the volume and weight of the motor can be optimized while ensuring a large output torque of the motor. In this way, the motor can be made thinner and lighter, meeting the trend of thinner motors, improving the working performance of the motor, saving economic costs, and effectively improving the user experience.

[0055] like Figure 1 As shown, according to some embodiments of the present invention, the motor further includes: a first housing 113 and a second housing 114 .

[0056] The first shell 113 and the second shell 114 define a receiving chamber 11 a , and the rotor assembly 111 and the stator assembly 112 are both disposed in the receiving chamber 11 a .

[0057] Specifically, at least portions of the first shell 113 and the second shell 114 can be spaced apart and define a receiving cavity 11a, and at least portions of the stator assembly 112 and the rotor assembly 111 can be accommodated in the receiving cavity 11a. The first shell 113 and the second shell 114 can install, support and protect the rotor assembly 111 and the stator assembly 112, thereby ensuring the normal operation of the rotor assembly 111 and the stator assembly 112, improving the safety and life of the rotor assembly 111 and the stator assembly 112, and improving the working performance of the motor.

[0058] like Figure 2-Figure 5 As shown, according to some embodiments of the present invention, the motor further includes: a limiting structure, which is disposed in the first housing 113 and is suitable for cooperating with the stator assembly 112 to limit the circumferential rotation of the stator assembly 112 .

[0059] Specifically, the limiting structure can be arranged in the first shell 113 and is suitable for cooperating with the stator assembly 112. When the motor is working, the rotor assembly 111 is the rotating part of the motor, and the stator assembly 112 is the fixed part of the motor and needs to remain fixed. An interactive magnetic field will be generated between the rotor assembly 111 and the stator assembly 112 to rotate the rotor assembly 111. During this process, the rotor assembly 111 applies an electromagnetic force to the stator assembly 112. By setting the limiting structure, the limiting structure can limit the circumferential rotation of the stator assembly 112, and can prevent the stator assembly 112 from slipping due to the interactive force between the rotor assembly 111 and the stator assembly 112 when the motor is working. The operating stability of the stator assembly 112 can be effectively improved, and the reliability of the motor can be improved.

[0060] It should be pointed out that the limiting structure can be but is not limited to the circumferential rotation of the stator assembly 112. The limiting structure can also be constructed to have a limiting effect in both the axial and circumferential directions of the stator assembly 112, so that the stator assembly 112 and the first shell 113 do not move relative to each other, thereby effectively preventing the stator assembly 112 from axial movement or circumferential rotation, and further improving the operating stability of the stator assembly 112.

[0061] like Figure 2-Figure 5 As shown, according to some embodiments of the present invention, the stator assembly 112 is sleeved on the rotor assembly 111 , and the stator assembly 112 and the first housing 113 participate in defining a limiting structure.

[0062] Specifically, the rotor assembly 111 and the stator assembly 112 are coaxially arranged, and the stator assembly 112 is sleeved on the outer periphery of the rotor assembly 111 to achieve the cooperation between the two. The stator assembly 112 and the first housing 113 both participate in defining the limiting structure, that is, at least part of the limiting structure is formed by the cooperation of the stator assembly 112 and the first housing 113. In this way, it can be ensured that the limiting structure has good limiting performance between the stator assembly 112 and the first housing 113, which is conducive to improving the limiting reliability and limiting effect, thereby helping to further enhance the fixing strength of the stator assembly 112.

[0063] like Figure 3 As shown, according to some embodiments of the present invention, the limiting structure includes a limiting column 1151, a first groove 115a and a second groove 115b.

[0064] The limiting column 1151 is arranged between the stator assembly 112 and the first shell 113, the first slot 115a is formed in the stator assembly 112, the second slot 115b is formed in the first shell 113, and at least part of the limiting column 1151 is located in the first slot 115a, and at least another part is located in the second slot 115b.

[0065] Specifically, the first groove 115a can be formed on the outer circumferential surface of the stator assembly 112 and extend axially along the stator assembly 112, and the second groove 115b can be formed on the inner circumferential surface of the first shell 113 and extend axially. When the stator assembly 112 is arranged in the accommodating cavity 11a, the first groove 115a of the stator assembly 112 and the second groove 115b of the first shell 113 can be combined to form a space suitable for accommodating the limiting column 1151. The limiting column 1151 can be arranged between the stator assembly 112 and the first shell 113 through the space, and the limiting column 1151 can extend axially along the stator assembly 112. Among them, at least part of the limiting column 1151 is located in the first groove 115a, and at least another part is located in the second groove 115b. Furthermore, the extension direction of the interface between at least part of the limiting column 1151 that cooperates with the first groove 115a and at least another part of the limiting column 1151 that cooperates with the second groove 115b is consistent with the extension direction of the limiting column 1151, that is, the first groove 115a and the second groove 115b are suitable for being assembled along the radial direction of the stator assembly 112 to accommodate the limiting column 1151. The limiting column 1151 is accommodated in the first groove 115a and the second groove 115b in a limiting fit manner. On the one hand, the outer surface of the limiting column 1151 is fully utilized, so that the limiting fit area between the limiting column 1151 and the first groove 115a and the second groove 115b is large, which can effectively improve the limiting effect and reliability, so that the stator assembly 112 can have good operating stability; on the other hand, the limiting column 1151 and the stator assembly 112 and the first shell 113 can be easily assembled along the axial direction, which can increase the assembly convenience and improve the motor production efficiency.

[0066] In addition, in some specific embodiments of the present invention, the first slot 115a is constructed as a plurality of slots 115a arranged at intervals along the circumferential direction of the stator assembly 112, and the second slot 115b and the limiting column 1151 are constructed as a plurality of slots 115a corresponding to each other one by one, which helps to enhance the limiting strength.

[0067] In some other specific embodiments of the present invention, the limiting column 1151 is integrated with the first shell 113 and defines a protrusion protruding from the inner circumferential surface of the first shell 113. The first groove 115a on the stator assembly 112 is suitable for cooperating with the protrusion. In this way, production processes can be saved and production efficiency can be improved.

[0068] like Figure 5 As shown, according to some embodiments of the present invention, the diameter D1 of the equivalent cylindrical hole defined by the first groove 115a and the second groove 115b satisfies: 2mm≤D1≤5mm.

[0069] Specifically, the first slot 115a and the second slot 115b can be radially spliced ​​together along the stator assembly 112 to define an equivalent cylindrical hole, and the aperture D1 of the equivalent cylindrical hole satisfies: 2mm≤D1≤5mm. For example, the aperture of the equivalent cylindrical hole can be 2mm, 4mm or 5mm. By setting the aperture D1 of the equivalent cylindrical hole within the above range, the radius of the equivalent cylindrical hole and the limiting column 1151 is limited within a suitable range. On the basis of ensuring that the limiting structure has sufficient limiting strength for the stator assembly 112, it is possible to avoid the stator core 1121 from generating magnetic saturation, which leads to an increase in motor current and a relative decrease in output power. Therefore, setting the aperture D1 of the equivalent cylindrical hole within the above range can also effectively improve the motor efficiency and life.

[0070] like Figure 6 As shown, according to some embodiments of the present invention, the chord height of the first slot 115 a is H1, and the width L of the yoke 11212 of the stator core 1121 of the stator assembly 112 satisfies: 1 / 8≤H1 / L≤1 / 4.

[0071] Specifically, when H1 / L<1 / 8, the diameter of the first slot 115a is small. When the design torque of the motor is large, the stator assembly 112 is prone to slipping, which reduces the reliability of the motor; and when H1 / L>1 / 4, the first slot 115a occupies a large width of the yoke 11212 of the stator core 1121, which easily leads to high magnetic density of the yoke 11212 of the stator core 1121 and causes magnetic saturation, thereby increasing the motor current, reducing the output power relatively, and shortening the life. By setting the proportional relationship between the chord height H1 of the first slot 115a and the width L of the yoke 11212 of the stator core 1121 within the above range, it is helpful to improve the limiting effect of the limiting structure on the stator assembly 112 and increase the output torque of the motor.

[0072] like Figure 6 As shown, according to some embodiments of the present invention, the center line of the tooth portion 11211 of the stator core 1121 coincides with the center line of the first slot 115 a when projected in the radial direction of the motor.

[0073] Specifically, the first slot 115a is located on the outer periphery of the stator core 1121, and the center line of the tooth portion 11211 on the inner periphery of the stator core 1121 can coincide with the radial projection of the center line of the first slot 115a in the motor. In this way, the stator core 1121 can be ensured to have a good structural balance, and it helps to optimize the limiting effect of the limiting structure on the stator assembly 112, thereby improving the operating stability of the stator assembly 112 and improving the working reliability of the motor.

[0074] like Figure 1 As shown, according to some embodiments of the present invention, the diameter of the stator core 1121 is 100 mm to 150 mm.

[0075] Specifically, the motor housing in the utility model can be integrated with the housing of the kitchen waste equipment 1. Compared with the related art that sets an independent motor and needs to increase the connection structure between the motor and the kitchen waste equipment 1, the motor housing in the utility model is integrated with the housing of the kitchen waste equipment 1, which can save the intermediate connection structure between the motor and the kitchen waste equipment 1, reduce the number of components, improve assembly efficiency, and increase the diameter range of the adaptable motor stator assembly 112, so that the diameter of the stator core 1121 can be set within the range of 100mm to 150mm, which is conducive to improving the lightness and thinness of the motor and further optimizing the working performance of the motor.

[0076] like Figure 1 As shown, according to some embodiments of the present invention, a ratio K of the diameter of the stator core 1121 to the thickness of the stator core 1121 satisfies: 5≤K≤15.

[0077] Specifically, since the diameter of the stator core 1121 can range from 100 mm to 150 mm, and the number of slots of the stator core 1121 can be set in the range of 12 to 24, by optimizing the diameter and the number of slots of the stator core 1121, it is ultimately possible to achieve that the ratio K of the diameter of the stator core 1121 to the thickness of the stator core 1121 can be set in the range of 5 to 15.

[0078] For example, the diameter of the stator core 1121 can be 100 mm, and the thickness of the stator core 1121 is 20 mm, corresponding to a ratio K of 5. The diameter of the stator core 1121 can also be 150 mm, and the thickness of the stator core 1121 is 10 mm, corresponding to a ratio K of 15. Compared with the K range of about 1.7 to 4.8 in the related art, the utility model sets the ratio of the diameter of the stator core 1121 to the thickness of the stator core 1121 within the above range, so that the motor can be made thinner while outputting the same torque, which can fully meet the trend of thinning motors. Figure 1-Figure 6 As shown, according to the kitchen waste device 1 of the second aspect of the embodiment of the utility model, the kitchen waste device 1 includes: the motor described in any one of the above embodiments. Since the kitchen waste device 1 according to the second aspect of the embodiment of the utility model includes the motor described in any one of the above embodiments, the motor in the kitchen waste device 1 is small in size and light in weight, so that the size and weight of the kitchen waste device 1 can be optimized, the space occupied by the kitchen waste device 1 in the cabinet layout can be saved, and the sink load can be reduced.

[0079] like Figure 1 As shown, according to some embodiments of the present invention, the kitchen waste device 1 has a kitchen waste crushing chamber 11b, which is formed in the second housing 114 of the motor and is located on a side of the second housing 114 away from the accommodating chamber 11a.

[0080] Specifically, the kitchen waste crushing chamber 11b is located on the side of the second shell 114 away from the accommodating chamber 11a. The kitchen waste crushing chamber 11b can be used to accommodate working parts (such as the knife disc 12, etc.). The leftovers discarded from food processing and kitchen waste materials such as leftovers can be crushed in the kitchen waste crushing chamber 11b, so that the kitchen waste equipment 1 can effectively prevent the sink and pipe from being blocked, and can play a role in cleaning the environment, eliminating odors, and reducing pest harassment. By forming a accommodating chamber 11a on the side of the second shell 114 facing the first shell 113 and forming a kitchen waste crushing chamber 11b on the side of the second shell 114 away from the first shell 113, the motor has a double-chamber structure. Compared with the independent arrangement of the motor in the related art, the kitchen waste device 1 in the utility model can integrate the motor housing with the kitchen waste device 1 housing, thereby saving materials and improving the integration between components, achieving cost reduction and weight reduction, optimizing the volume of the kitchen waste device 1 and improving the efficiency of component assembly. In this way, the utilization rate of the cabinet space can be increased, the sink load can be reduced to extend the life of the sink, the production efficiency of the kitchen waste device 1 can be improved, and economic costs can be saved, which can effectively improve the user experience.

[0081] In addition, in a specific embodiment of the present invention, the second shell 114 has a discharge port 11c connected to the kitchen waste crushing chamber 11b, and the crushed materials in the kitchen waste crushing chamber 11b can be discharged from the discharge port 11c.

[0082] In some specific embodiments of the present invention, the cutter disc 12 includes a first cutter disc 121 and a second cutter disc 122. The first cutter disc 121 is connected to the rotating shaft 1111 of the rotor assembly 111. The second cutter disc 122 is arranged on the side of the first cutter disc 121 axially close to the accommodating chamber 11a and is connected to the first cutter disc 121. The first cutter disc 121 can support and limit the second cutter disc 122; wherein, the first cutter disc 121 is connected to the rotating shaft 1111 of the rotor assembly 111 by bolts 13, and a bolt cover 14 is provided on the outer peripheral cover of the head of the bolt 13 protruding from the rotating shaft 1111 to protect the connection between the bolt 13 and the first cutter disc 121 and the rotating shaft 1111.

[0083] In some other specific embodiments of the present invention, the kitchen waste device 1 further includes: a third shell 15 and a fourth shell 16, one end of the third shell 15 in the axial direction is connected to the end of the second shell 114 in the axial direction away from the first shell 113, and defines a kitchen waste crushing chamber 11b, and the end of the third shell 15 in the axial direction away from the second shell 114 is formed with a feed port 15a, and the feed port 15a is used to provide a channel for kitchen waste materials to enter the kitchen waste crushing chamber 11b, and the third shell 15 can ensure that the material in the kitchen waste crushing chamber 11b will not splash to the outside and can ensure the normal feeding of the kitchen waste device 1; the fourth shell 16 is arranged between the first shell 113 and the second shell 114, and is suitable for abutting against one end of the stator assembly 112 in the axial direction close to the kitchen waste crushing chamber 11b, and the fourth shell 16 can limit, support and protect the stator assembly 112 and the rotor assembly 111, and can further improve the working reliability of the stator assembly 112 and the rotor assembly 111.

[0084] In some further specific embodiments of the present invention, the kitchen waste device 1 further includes: a sealing ring 17, a shaft sleeve 18 and an oil seal 19. The sealing ring 17 is arranged between the third housing 15 and the second housing 114 to improve the airtightness of the connection between the third housing 15 and the second housing 114; the shaft sleeve 18 is sleeved on at least part of the outer circumference of the rotating shaft 1111 of the rotor assembly 111 to optimize the fastening, heat dissipation and vibration reduction performance of the rotating shaft 1111; the oil seal 19 is arranged on the outer circumference of the rotating shaft 1111 of the rotor assembly 111, and can seal, waterproof and dustproof the rotating shaft 1111, thereby improving the working safety of the rotor assembly 111 and extending its service life.

[0085] like Figure 1 As shown, according to some embodiments of the present invention, the inner diameter of the kitchen waste crushing chamber 11b is D2, the outer diameter of the stator assembly 112 is D3, and the following condition is satisfied: 0.7≤D3 / D2≤1.

[0086] Specifically, when D3 / D2<0.7, the diameter of the stator assembly 112 will be too small. Under the condition of the same output power, the stator assembly 112 needs to be made thicker, which increases the height of the accommodating chamber 11a, so that the motor needs to occupy more cabinet space. At the same time, it also brings about an increase in weight, resulting in an increase in the sink load; when D3 / D2>1.0, the diameter of the accommodating chamber 11a will be larger than the diameter of the food waste crushing chamber 11b, and the food waste equipment 1 as a whole needs to be wrapped in a larger shell, which will also increase the volume and weight of the food waste equipment 1, resulting in reduced cabinet space utilization and increased load. By setting the proportional relationship between the inner diameter of the kitchen waste crushing chamber 11b and the outer diameter of the stator assembly 112 within the above range, illustratively, D3 / D2 can be equal to 0.7, 0.8, 0.9 or 1.0, etc., the inner diameter of the kitchen waste crushing chamber 11b and the outer diameter of the stator assembly 112 can have a suitable proportional range, which helps to optimize the volume and weight of the kitchen waste device 1, improve space utilization, save material costs, and reduce the sink load.

[0087] In addition, in some specific embodiments of the present invention, the inner diameter D2 of the kitchen waste crushing chamber 11b satisfies: 100mm≤D2≤200mm, and the outer diameter D3 of the stator assembly 112 satisfies: 100mm≤D3≤150mm. For example, when the inner diameter D2 of the kitchen waste crushing chamber 11b is configured to be 150mm, the outer diameter D3 of the stator assembly 112 can be configured to be 105mm, 120mm, 135mm or 150mm, etc.

[0088] In summary, the motor of the utility model includes a rotor assembly 111, a stator assembly 112, a first housing 113, a second housing 114 and a limiting structure. Among them, the rotor core of the rotor assembly 111 has 2P levels, and the pole number 2P satisfies: 10≤2P≤20; the stator core 1121 of the stator assembly 112 has M slots, the slot number M satisfies: 12≤M≤24, and the slot-pole common multiple is selected as the maximum value; the first housing 113 and the second housing 114 define a receiving cavity 11a, and the rotor assembly 111 and the stator assembly 112 are both arranged in the receiving cavity 11a; the limiting structure is arranged in the first housing 113, and is suitable for cooperating with the stator assembly 112 to limit the circumferential rotation of the stator assembly 112. By limiting the number of poles 2P to 10 to 20, the number of slots M to 12 to 24, and selecting the slots and the number of poles to maximize the least common multiple, the volume and weight of the motor can be optimized while ensuring a large output torque of the motor. In this way, the motor's lightweight performance and working performance can be improved, and economic costs can be saved, which can effectively improve the user experience. The limit structure can limit the circumferential rotation of the stator assembly 112, and can prevent the stator assembly 112 from slipping due to the interaction force between the rotor assembly 111 and the stator assembly 112 when the motor is working, which can effectively improve the operating stability of the stator assembly 112 and improve the working reliability of the motor.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 utility model. 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0090] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that: include: A rotor assembly, wherein the rotor core of the rotor assembly has 2P stages, and the number of poles 2P satisfies: 10≤2P≤20; A stator assembly, wherein the stator core of the stator assembly has M slots, the number of slots M satisfies: 12≤M≤24, and the slot pole common multiple is selected as the maximum value.

2. The motor according to claim 1, characterized in that The motor further includes: a first shell and a second shell, wherein the first shell and the second shell define a receiving cavity, and the rotor assembly and the stator assembly are both disposed in the receiving cavity.

3. The motor according to claim 2, characterized in that The motor further comprises: a limiting structure, which is disposed in the first housing and is adapted to cooperate with the stator assembly to limit the circumferential rotation of the stator assembly.

4. The motor according to claim 3, characterized in that The stator assembly is sleeved on the rotor assembly, and the stator assembly and the first shell participate in defining the limiting structure.

5. The motor according to claim 3, characterized in that The limiting structure includes a limiting column, a first slot and a second slot, the limiting column is arranged between the stator assembly and the first shell, the first slot is formed in the stator assembly, the second slot is formed in the first shell, and at least a portion of the limiting column is located in the first slot, and at least another portion is located in the second slot.

6. The motor according to claim 5, characterized in that The diameter D1 of the equivalent cylindrical hole defined by the first groove and the second groove satisfies: 2mm≤D1≤5mm.

7. The motor according to claim 5, characterized in that The chord height of the first slot is H1, and the width L of the yoke of the stator core of the stator assembly satisfies: 1 / 8≤H1 / L≤1 / 4.

8. The motor according to claim 5, characterized in that The center line of the teeth of the stator core coincides with the center line of the first slot when projected in the radial direction of the motor.

9. The motor according to claim 1, characterized in that The diameter of the stator core is 100 mm to 150 mm.

10. The motor according to claim 9, characterized in that A ratio K of the diameter of the stator core to the thickness of the stator core satisfies: 5≤K≤15.

11. A kitchen waste device, characterized in that: include: The motor according to any one of claims 1 to 10.

12. The kitchen waste device according to claim 11, characterized in that: The kitchen waste device comprises a kitchen waste crushing chamber, which is formed in the second shell of the motor and is located at a side of the second shell away from the accommodating chamber.

13. The kitchen waste device according to claim 12, characterized in that: The inner diameter of the kitchen waste crushing chamber is D2, the outer diameter of the stator assembly is D3, and the following relationship is satisfied: 0.7≤D3 / D2≤1.

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