Brushless motor of milk foam machine

Abstract

The utility model relates to a brushless motor of a milk foam machine. The brushless motor comprises a stator assembly; the bottom shell wraps the stator assembly, the bottom shell is provided with an accommodating cavity with an opening, the bottom shell is provided with a first eccentric channel, and the bottom shell is provided with a first clamping part at the opening of the accommodating cavity; the rotor is arranged in the center of the containing cavity, and the stator assembly drives the rotor to rotate; the stirring disc rotates along with the rotor, a first bubbling protrusion array is arranged on the face, facing the opening, of the stirring disc, a first gap channel is formed between the stirring disc and the inner bottom of the bottom shell, and a second gap channel is formed between the stirring disc and the inner side wall of the bottom shell; the sealing cover is provided with a second clamping part matched with the first clamping part in a clamping mode, the peripheral wall of the sealing cover is connected with the bottom shell in a sealed mode, the sealing cover is provided with a second bubbling protrusion array, a bubbling channel is formed between the first bubbling protrusion array and the second bubbling protrusion array, and the sealing cover is provided with a second eccentric channel; the first eccentric channel, the first gap channel, the second gap channel, the bubbling channel and the second eccentric channel are sequentially communicated.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a brushless motor for a milk foam machine. Background Art

[0002] As society continues to develop and progress, people's quality of life continues to improve. The home appliance industry, especially the beverage market, is growing, and the requirements for motors are also increasing. Traditional beverage equipment is equipped with multiple motors driving pumps below the mixing chamber. Agitators penetrate the mixing chamber to stir and pressurize dairy products. This equipment is relatively large in size and has room for improvement in food safety. Utility Model Content

[0003] In view of the above situation, it is necessary to provide a low-height brushless motor for a milk frothing machine.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a brushless motor for a milk frother, comprising:

[0005] stator assembly;

[0006] A bottom shell, wherein the side wall of the bottom shell wraps the stator assembly, the stator assembly has a cable passing through the bottom shell to the outside, the bottom shell has an open accommodating cavity, a first eccentric channel communicating with the accommodating cavity is provided on a side of the bottom shell facing away from the accommodating cavity, and the bottom shell is provided with a first clamping portion at the opening of the accommodating cavity;

[0007] A rotor is disposed at the center of the accommodating cavity, and generates a magnetic field under the action of the current in the stator assembly and drives the rotor to rotate;

[0008] a stirring disc disposed in the accommodating cavity and arranged around the rotor, the stirring disc rotating with the rotor, a first bubbling protrusion array being provided on a surface of the stirring disc facing the opening, a first gap channel being defined between the stirring disc and the inner bottom of the bottom shell, and a second gap channel being defined between the stirring disc and the inner sidewall of the bottom shell;

[0009] The cover is provided with a second clamping portion that is engaged with the first clamping portion, the outer peripheral wall of the cover is sealed with the bottom shell, and a second bubble protrusion array is provided on the side of the cover facing the stirring disk, the first bubble protrusion array and the second bubble protrusion array are staggered in the radial direction and a bubble channel is formed between the first bubble protrusion array and the second bubble protrusion array, and the cover is provided with a second eccentric channel facing away from the stirring disk, and the first eccentric channel, the first gap channel, the second gap channel, the bubble channel and the second eccentric channel are connected in sequence.

[0010] Furthermore, a convex ring is provided on a side of the sealing cover facing the stirring disc, the second eccentric channel is arranged in the convex ring, and the convex ring has a notch communicating with the bubbling channel.

[0011] Furthermore, the exposed portion of the rotor is wrapped by a packaging layer.

[0012] Furthermore, the first bubble protrusion array includes a plurality of first array circles, and the inclination of one side of the first protrusion forming the first array circle is greater than the inclination of the other side, so that the thickness of the first protrusion gradually decreases radially outward.

[0013] Furthermore, the length of the first protrusion gradually increases in the radial outward direction.

[0014] Furthermore, in the same second array circle, there are reinforcing connecting ribs between the roots of the circumferentially adjacent first protrusions.

[0015] Furthermore, the first bubble protrusion array also includes an outermost second array circle, and the second protrusions forming the second array circle are symmetrically arranged on both sides, and the first protrusions and the second protrusions have the same height.

[0016] Furthermore, the outer side surface of the top of the second protrusion has an arc-shaped guide surface.

[0017] Furthermore, the second bubble protrusion array includes several third array circles, and the inclination of one side of the several third protrusions forming the third array circle is greater than the inclination of the other side, and the inclination direction of the third protrusion is opposite to the inclination direction of the first protrusion.

[0018] Furthermore, the first clamping portion includes a plurality of clamping grooves and fixing grooves connected in the circumferential direction, the clamping grooves are upwardly open, and the second clamping portion includes a plurality of clamping protrusions, the clamping protrusions extend from the clamping grooves and are rotated into the fixing grooves.

[0019] The beneficial effect of this utility model lies in: the stator assembly is built into the bottom shell through injection molding, and the current generates a magnetic field, which drives the rotor in the accommodating cavity to rotate, and in turn drives the stirring plate to rotate and stir. This replaces the existing motor and pump body design, saving product space and cost, greatly reducing the overall height, meeting the demand for miniaturization of terminal home appliances, and achieving high integration, reducing assembly costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic cross-sectional view of a brushless motor for a milk frother according to an embodiment of the present invention;

[0021] Figure 2This is a schematic diagram of the appearance and structure of a brushless motor for a milk frother according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the external structure of a brushless motor for a milk frother according to an embodiment of the present invention, viewed from another direction;

[0023] Figure 4 This is a structural schematic diagram of a bottom shell of a brushless motor for a milk frother according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic structural diagram of a stirring disc and a rotor of a brushless motor for a milk frother according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic structural diagram of a stirring disc and a rotor of a brushless motor for a milk frother according to an embodiment of the present invention, viewed from another direction;

[0026] Figure 7 This is a structural schematic diagram of a cover of a brushless motor for a milk frother according to an embodiment of the present invention;

[0027] Figure 8 It is a structural schematic diagram of another direction of the cover of a brushless motor of a milk frother according to an embodiment of the present invention.

[0028] Description of labels:

[0029] 100, stator assembly; 110, cable; 200, bottom shell; 210, accommodating cavity;

[0030] 220, first eccentric channel; 230, first clamping portion; 231, clamping groove; 232, locking groove;

[0031] 300, rotor; 310, shaft; 320, permanent magnet; 400, stirring plate;

[0032] 410, first bubble protrusion array; 411, first array ring; 4111, first protrusion;

[0033] 412, second array ring; 4121, second protrusion; 4122, arc-shaped guide surface;

[0034] 420, first gap channel; 430, second gap channel; 440, reinforcing connecting rib;

[0035] 500, cover; 510, second clamping portion; 511, clamping protrusion; 520, second blister protrusion array;

[0036] 521, third array ring; 5211, third protrusion; 530, bubbling channel; 540, second eccentric channel; 550, convex ring; 560, sealing groove; 600, sealing ring. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the present invention more clearly understood, the following describes a brushless motor for a milk frother in accordance with the present invention in further detail, with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention.

[0038] Please refer to Figures 1-8 , a brushless motor for a milk froth machine, comprising:

[0039] stator assembly 100;

[0040] The bottom shell 200 has a sidewall that encloses the stator assembly 100. The stator assembly 100 has a cable 110 extending outward through the bottom shell 200. The bottom shell 200 has an open accommodating cavity 210. A first eccentric passage 220 communicating with the accommodating cavity 210 is provided on a surface of the bottom shell 200 that faces away from the accommodating cavity 210. The bottom shell 200 has a first clamping portion 230 at the opening of the accommodating cavity 210.

[0041] The rotor 300 is disposed at the center of the accommodating cavity 210 , and generates a magnetic field under the action of the current in the stator assembly 100 and drives the rotor 300 to rotate;

[0042] The stirring disk 400 is disposed within the accommodating chamber 210 and surrounds the rotor 300. The stirring disk 400 rotates with the rotor 300. A first bubbling protrusion array 410 is provided on a surface of the stirring disk 400 facing the opening. A first gap channel 420 is defined between the stirring disk 400 and the inner bottom of the bottom shell 200. A second gap channel 430 is defined between the stirring disk 400 and the inner sidewall of the bottom shell 200.

[0043] The cover 500 is provided with a second clamping portion 510 that is clamped with the first clamping portion 230. The outer peripheral wall of the cover 500 is sealed with the bottom shell 200. A second bubble protrusion array 520 is provided on the side of the cover 500 facing the stirring disk 400. The first bubble protrusion array 410 and the second bubble protrusion array 520 are staggered in the radial direction and a bubble channel 530 is formed between the first bubble protrusion array 410 and the second bubble protrusion array 520. The cover 500 is provided with a second eccentric channel 540 facing away from the stirring disk 400. The first eccentric channel 220, the first gap channel 420, the second gap channel 430, the bubble channel 530 and the second eccentric channel 540 are connected in sequence.

[0044] The stator assembly 100 is built into the bottom housing 200 through injection molding. Electric current generates a magnetic field, driving the rotor 300 within the accommodating cavity 210 to rotate, which in turn drives the stirring plate 400 to rotate and stir the food. This design replaces the existing motor-pump design, saving product space and cost, significantly reducing the overall height, meeting the demand for miniaturization of the finished appliance. It also features high integration and reduces assembly costs.

[0045] Please refer to Figure 7 and Figure 8 The cover 500 is provided with a convex ring 550 on the side facing the stirring disk 400. The second eccentric channel 540 is disposed in the convex ring 550. The convex ring 550 has a gap connected to the foaming channel 530. The convex ring 550 slows down the flow of milk foam, so that the milk can be fully foamed.

[0046] Preferably, the exposed portion of the rotor 300 is encapsulated by an encapsulation layer. Preferably, the encapsulation layer is made of food-grade plastic and is injection-molded around the exposed portion of the rotor 300, ensuring that the portion in contact with the milk foam meets food safety requirements. In particular, the rotor 300 and the stirring disc 400 are integrally formed.

[0047] Please refer to Figure 5 and Figure 6 The first bubble-generating protrusion array 410 includes a plurality of first array circles 411. The inclination of one side of the first protrusion 4111 forming the first array circle 411 is greater than the inclination of the other side, causing the thickness of the first protrusion 4111 to gradually decrease radially outward. It will be understood that the plurality of first array circles 411 are concentric but have different diameters. The side surfaces of the first protrusion 4111 refer to the two side surfaces in the circumferential direction. In particular, the first protrusions 4111 of adjacent first array circles 411 are staggered in the circumferential direction, preventing milk from directly entering the second eccentric channel 540 and ensuring sufficient stirring.

[0048] Please refer to Figure 5 and Figure 6 The length of the first protrusion 4111 gradually increases in the radially outward direction. When the milk flows from the outside to the inside, the first protrusion 4111 on the outside has a large length and can fully stir the milk.

[0049] Please refer to Figure 5 and Figure 6 In the same second array circle 412, the roots of the circumferentially adjacent first protrusions 4111 are provided with reinforcing ribs 440. The reinforcing ribs 440 not only improve strength but also act as a barrier, slowing the speed of milk foam moving toward the center, allowing the milk to be fully stirred and frothed.

[0050] Please refer to Figure 5 and Figure 6The first bubble protrusion array 410 also includes an outermost second array ring 412, and the second protrusions 4121 forming the second array ring 412 are symmetrically arranged on both sides, and the first protrusions 4111 and the second protrusions 4121 have the same height.

[0051] Please refer to Figure 6 The outer side surface of the top of the second protrusion 4121 has an arc-shaped guide surface 4122. The arc-shaped guide surface is provided to facilitate the milk to smoothly enter the foaming channel 530.

[0052] Please refer to Figure 7 and Figure 8 The second bubble-forming protrusion array 520 includes a plurality of third array circles 521. The inclination of one side of the plurality of third protrusions 5211 forming the third array circle 521 is greater than the inclination of the other side. The inclination direction of the third protrusions 5211 is opposite to that of the first protrusions 4111. That is, after assembly, when the first protrusions 4111 tilt clockwise, the third protrusions 5211 tilt counterclockwise, and vice versa, thereby enhancing the stirring effect. Specifically, within the same third array circle 521, the roots of circumferentially adjacent third protrusions 5211 are provided with reinforcing ribs.

[0053] Please refer to Figure 4 and Figure 7 The first engaging portion 230 includes a plurality of circumferentially interconnected engaging grooves 231 and locking grooves 232. The engaging grooves 231 open upward. The second engaging portion 510 includes a plurality of engaging protrusions 511. The engaging protrusions 511 extend from the engaging grooves 231 and rotate into the locking grooves 232. This snap-on connection is convenient and simple, requires no additional components, and ensures food safety.

[0054] Understandable, please refer to Figure 1 and Figure 6 The outer wall of the stirring plate 400 and the bottom shell 200 can be sealed by a sealing ring 600, that is, a sealing groove 560 is provided on the outer wall of the stirring plate 400, and the sealing ring 600 is configured in the sealing groove 560. It can be understood that multiple sealing rings 600 can be provided in the height direction.

[0055] Generally, to facilitate liquid injection and discharge, the first eccentric channel 220 usually extends outward with a first connecting nozzle, and the second eccentric channel 540 extends outward with a second connecting nozzle, thereby facilitating connection to pipelines.

[0056] As will be appreciated, rotor 300 typically includes a rotating shaft 310 and several permanent magnets 320 (magnetic steel), which are encapsulated and integrated into a single unit. This structure is identical to that of conventional brushless motor rotors 300. Stator assembly 100 similarly comprises silicon steel sheets with multi-pole slots, within which enameled wire is wound. The stator is then encapsulated by an injection-molded bottom shell 200, generating a magnetic field that drives rotor 300.

[0057] It is understandable that in order to facilitate the rotation of the rotor 300, a shaft 310 groove is usually provided on the bottom shell 200 and the cover 500. A shaft 310 bearing can be provided in the shaft 310 groove as needed, and the rotating shaft 310 cooperates with the shaft 310 bearing to ensure smooth rotation.

[0058] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0059] In addition, if the embodiments of the present invention include descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0060] In summary, the brushless motor for a milk frother, provided by this utility model, incorporates a stator assembly within a bottom housing via injection molding. Electric current generates a magnetic field, driving the rotor within the housing chamber to rotate, which in turn drives the stirring disc to produce stirring. This design replaces the existing motor-pump design, saving product space and cost, significantly reducing overall height, meeting the demand for miniaturization in finished home appliances. Furthermore, it offers a high degree of integration, reducing assembly costs.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A brushless motor for a milk frother, characterized in that: include: stator assembly; A bottom shell, wherein the side wall of the bottom shell wraps the stator assembly, the stator assembly has a cable passing through the bottom shell to the outside, the bottom shell has an open accommodating cavity, a first eccentric channel communicating with the accommodating cavity is provided on a side of the bottom shell facing away from the accommodating cavity, and the bottom shell is provided with a first clamping portion at the opening of the accommodating cavity; A rotor is disposed at the center of the accommodating cavity, and generates a magnetic field under the action of the current in the stator assembly and drives the rotor to rotate; a stirring disc disposed in the accommodating cavity and arranged around the rotor, the stirring disc rotating with the rotor, a first bubbling protrusion array being provided on a surface of the stirring disc facing the opening, a first gap channel being defined between the stirring disc and the inner bottom of the bottom shell, and a second gap channel being defined between the stirring disc and the inner sidewall of the bottom shell; The cover is provided with a second clamping portion that is engaged with the first clamping portion, the outer peripheral wall of the cover is sealed with the bottom shell, and a second bubble protrusion array is provided on the side of the cover facing the stirring disk, the first bubble protrusion array and the second bubble protrusion array are staggered in the radial direction and a bubble channel is formed between the first bubble protrusion array and the second bubble protrusion array, and the cover is provided with a second eccentric channel facing away from the stirring disk, and the first eccentric channel, the first gap channel, the second gap channel, the bubble channel and the second eccentric channel are connected in sequence.

2. The brushless motor for a milk frother according to claim 1, characterized in that: A convex ring is provided on a side of the sealing cover facing the stirring disk, the second eccentric channel is arranged in the convex ring, and the convex ring has a notch communicating with the bubbling channel.

3. The brushless motor for a milk frother according to claim 1, characterized in that: The exposed portion of the rotor is wrapped by an encapsulation layer.

4. The brushless motor for a milk frother according to claim 1, characterized in that: The first bubble protrusion array includes a plurality of first array circles. The inclination of one side of the first protrusion forming the first array circle is greater than the inclination of the other side, so that the thickness of the first protrusion gradually decreases radially outward.

5. The brushless motor for a milk frother according to claim 4, characterized in that: The length of the first protrusion gradually increases in the radial outward direction.

6. The brushless motor for a milk frother according to claim 4, characterized in that: In the same second array circle, there are reinforcing connecting ribs between the roots of the circumferentially adjacent first protrusions.

7. The brushless motor for a milk frother according to claim 4, characterized in that: The first bubble protrusion array further includes an outermost second array circle, and the second protrusions forming the second array circle are symmetrically arranged on both sides, and the first protrusions and the second protrusions have the same height.

8. The brushless motor for a milk frother according to claim 7, characterized in that: The outer side surface of the top of the second protrusion has an arc-shaped guiding surface.

9. The brushless motor for a milk frother according to claim 4, characterized in that: The second bubbling protrusion array includes several third array circles, the inclination of one side of the several third protrusions forming the third array circle is greater than the inclination of the other side, and the inclination direction of the third protrusion is opposite to the inclination direction of the first protrusion.

10. The brushless motor for a milk frother according to claim 1, characterized in that: The first clamping portion includes a plurality of clamping grooves and locking grooves connected in the circumferential direction, the clamping grooves are upwardly open, and the second clamping portion includes a plurality of clamping protrusions, the clamping protrusions extend from the clamping grooves and are rotated into the locking grooves.

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