WO2014201753A1

WO2014201753A1 - Milk foaming machine

Info

Publication number: WO2014201753A1
Application number: PCT/CN2013/080375
Authority: WO
Inventors: 熊兴剑
Original assignee: Xiong Xingjian
Priority date: 2013-06-21
Filing date: 2013-07-30
Publication date: 2014-12-24

Abstract

Disclosed is a milk foaming machine, comprising a housing (1), a container lid (3) and a magnetic drive device (8), wherein a container (2) and a heating device (4) are arranged in the housing (1), and the magnetic drive device (8) is arranged below the container (2). The container lid (3) is arranged at the upper end of the container (2), and the container (2) is provided therein with an air tube (5) which is in communication with the outside of the container (2). The lower end of the air tube (5) is connected to a stirring shaft (6), and the stirring shaft (6) at an outlet of the lower end of the air tube (5) is connected to a stirrer (7), and the lower end of the air tube (5) is provided with an opening. In the whole rotational operating process of the stirrer (7), by means of a negative pressure generated by the rotation of the stirrer (7), the above-mentioned milk foaming machine continuously introduces air through the air tube (5), which is located above the stirrer (7), into a foaming area near the stirrer (7), thereby providing the air required for the continuous stirring and foaming, so as to make the foaming of milk more sufficient and finer. The product is simple in structure, quick in production assembly, lower in costs, convenient in consumer use and easy in cleaning.

Description

Instruction manual

Milk foaming machine

The present invention relates to an apparatus for preparing a foam using milk, and more particularly to a milk foaming machine. Background technique

At present, the equipment for preparing foams using milk on the market mainly includes steam-foaming appliances and mechanically-stirred foaming appliances.

A steam-foaming device, generally a steam generating device, delivers steam through a steam tube to a container containing milk. This method of generating milk foam by steam requires the provision of additional steam generating means and steam delivery means. The structure is complicated and the cost is high. At the same time, the foaming effect has a great relationship with the user's operation skill, and the user's operation skill is poor, which may result in unsatisfactory foaming effect.

A mechanically agitated foaming device is used in which milk foam is formed by rotating in a container containing milk at a suitable speed by a stirrer, and the air is quickly incorporated and mixed into the milk to form a milk foam. However, the current common problems with the use of mechanically agitated foaming appliances are: the amount of milk remaining in the container that is not foamed is excessive, and the foaming of the milk is insufficient; the reason is: when the agitator rotates and stirs the milk, About half of the working time of the agitator, the agitator used for foaming is almost covered by a part of the already foamed milk foam, so that the air can no longer be mixed into the foam near the lower agitator of the container. Area, at this time, although the agitator is still rotating, since almost no new air is introduced into the vicinity of the agitator, the remaining milk which affects the bottom of the container continues to foam, resulting in a surplus of the remaining unfoamed milk. , making the milk foam insufficient and delicate, also affecting the durability of the milk foam. Summary of the invention

The object of the present invention is to overcome the above-mentioned deficiencies of the prior art, and to provide a milk foaming machine which, through the rotation of the agitator, relies on the negative pressure generated by the rotation of the agitator, and passes the air through the air tube located above the agitator. Introduced into the foaming area near the agitator, especially after the agitator is covered by the milk foam, can continue to introduce air to the vicinity of the agitator, providing the air required for continuous agitation foaming, and the remaining part of the milk can be stirred to continue foaming. , make milk foam longer, foam more fully, raise milk The amount of foaming significantly reduces the amount of milk that has not been foamed, the structural unit, the lower cost of the product, and the ease of operation.

The present invention is achieved by a milk foaming machine comprising a casing and a container cover, wherein the casing is provided with a container and a heating device and a magnetic driving device for heating the container, the magnetic driving device is arranged The container is disposed at an upper end of the container, and the container cover is disposed at an upper end of the container. The container is provided with an air tube communicating with the outside of the container, and the air tube is connected with a stirring shaft. An agitator is connected to the agitating shaft at the outlet of the lower end of the air tube, and the lower end of the air tube is provided with an opening.

Optionally, the upper portion of the air tube is connected to the container cover by an external thread or a snap structure; the upper portion of the air tube is further provided with an internal thread, and the internal thread is connected with a stirring shaft handle, and the stirring shaft is The upper end is fixedly connected to the stirring shaft handle, and the agitator is rotatably connected to the lower end of the stirring shaft through an elastic sleeve.

Optionally, a fixing screw is fixedly disposed on the agitating shaft, and the fixing screw is screwed with an axial positioning nut, and the positioning nut is configured to resist the elastic sleeve when the agitator is inserted into the elastic sleeve. The elastic sleeve has a stepped inner hole, the side wall of the elastic sleeve is provided with a notch, and the diameter of the through hole through which the stirring shaft passes through the upper portion of the elastic sleeve is smaller than the step of the lower end of the stirring shaft The outer diameter of the outer surface of the elastic sleeve is larger than the outer diameter of the step surface of the lower end of the stirring shaft, and the elastic sleeve is rotatably disposed on the step surface of the lower end of the stirring shaft and is in line contact with the step surface. The center of the agitator has a cylindrical boss, and the bottom of the circular arc groove of the side wall of the cylindrical boss is provided with two first rotation preventing surfaces, and the inner side of the elastic sleeve is correspondingly disposed to abut against the Two second rotation preventing surfaces of the first rotation preventing surface, the outer sleeve of the elastic sleeve is provided with an elastic clip member, and the first rotation preventing surface of the cylindrical boss of the center of the agitator and the inner side of the elastic sleeve The second stop surface forms an elastic card Buckle detachable connection.

Optionally, the lower part of the air tube is provided with an elastic clamping sleeve, the elastic clamping sleeve is provided with a notch, and the side of the stirring shaft is provided with a rotation preventing plane, and the inner side wall of the elastic clamping sleeve is correspondingly disposed There is a rotation stop portion which is adjacent to the rotation stop plane of the side of the stirring shaft, and an elastic clip member is further disposed on the outer side of the elastic clamping sleeve, and the stirring shaft is rotatably connected with the center hole of the agitator, and is stirred. The lower portion of the device is in line contact with the step of the agitating shaft, and the agitating shaft is inserted into the inner hole of the elastic clamping sleeve to form an elastic detachable anti-rotation connection.

Optionally, the air tube is internally provided with a supporting portion, and the upper end of the stirring shaft is fixedly connected to the supporting portion; the fixing end of the stirring shaft is fixedly sleeved with a fixing raft, and the upper end of the fixing raft is connected with a gasket passing through the agitating shaft, above which is provided a rotary connecting ring passing through the agitating shaft, The rotating connecting ring has a magnet built therein, the rotating connecting ring is located at an upper end of the pad and is in line contact with the pad, and the agitator is rotatably sleeved on the agitating shaft and connected to the rotating ring Form a detachable magnetic connection.

Optionally, the lower end of the air tube is provided with an opening, the agitator is disposed near an outlet of the lower end of the air tube, and the agitator and the outlet of the lower end of the air tube are provided for Air is introduced into the gap near the agitator in the vessel.

Optionally, the magnetic drive device includes a motor, an active magnet disk, a magnet is disposed in the active magnet disk, and a magnet is disposed in the agitator; the active magnet disk is fixedly coupled to the rotating shaft of the motor and The corresponding coaxial is located below the agitator.

Optionally, the air tube includes an upper portion of the air tube and a lower portion of the air tube, and the upper portion of the air tube and the lower portion of the air tube are detachably threaded or snap-connected, and the upper portion of the air tube and the lower portion of the air tube There is a seal 间 between them.

Optionally, the container has air introduced from the exterior of the container to the interior of the container through the mouth of the container and/or through a slot provided in the lid of the container.

Optionally, a temperature controller is further disposed under the bottom surface of the container, and the control base board, the power take-off connector, and the detachable power take-off base are further disposed on the base of the housing.

The milk foaming machine provided by the invention continuously presses the air tube located above the agitator into the foaming area near the agitator, especially during the whole rotating operation of the agitator, by means of the negative pressure generated by the rotation of the agitator, in particular After the agitator is covered by the milk foam, the air can be continuously introduced to the vicinity of the agitator, providing the air required for continuous agitation foaming, and the remaining milk can be stirred to continue foaming, increasing the amount of milk foam generation, and significantly reducing the remaining The amount of foamed milk, the milk is more fully foamed, the milk foam is more durable, the operation process is simple, and the product structure is simple, the production assembly is quick, the cost is low, and the consumer is easy to use and easy to use. Cleaning, economical use.

DRAWINGS

In order to more clearly illustrate the technical solutions of the present invention, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. For the ordinary technicians, other drawings can be obtained based on these drawings without any creative work. 1 is a schematic cross-sectional view of a milk foaming machine according to a first embodiment of the present invention;

2 is a perspective exploded view of a milk foaming machine according to Embodiment 1 of the present invention;

3 is a schematic cross-sectional view showing a container cap, an air tube, a stirring shaft handle, a stirring shaft, an elastic sleeve, a stirrer, an axial positioning screw, and a positioning nut in the milk foaming machine according to the first embodiment of the present invention;

Figure 4 is a schematic cross-sectional view of the container cover removed in Figure 3;

Figure 5 (a) is an exploded view of Figure 4;

Figure 5 (b) is an exploded perspective view of the air removal tube and the agitator in Figure 5 (a);

Figure 6 (a) is a plan view showing the slot of the elastic sleeve of the milk foaming machine provided in the first embodiment of the present invention; Figure 6 (b) is a slot of the elastic sleeve of the milk foaming machine provided in the first embodiment of the present invention; Another schematic diagram of the plane;

Figure 7 is a schematic cross-sectional view showing a milk foaming machine according to a second embodiment of the present invention;

Figure 8 is a partially enlarged schematic view of a portion A in Figure 7;

Figure 9 is a perspective exploded view showing the elastic clamping sleeve and the elastic clip member of the slot in the air tube of the milk foaming machine provided in the second embodiment of the present invention;

Figure 10 is a perspective exploded view showing the air tube and the container cover in the milk foaming machine according to the second embodiment of the present invention;

Figure 11 is a perspective exploded view of the container cap, the air tube, the agitating shaft, and the agitator in the milk foaming machine provided in the second embodiment of the present invention;

Figure 12 is a perspective exploded view of a stirring shaft and a stirrer in a milk foaming machine according to a second embodiment of the present invention;

Fig. 13 is a perspective view showing the three-dimensional assembly of the stirring shaft and the agitator in the milk foaming machine according to the second embodiment of the present invention.

Figure 14 is a partial schematic view showing the quick release structure of the agitator in the milk foaming machine provided in the third embodiment of the present invention;

Figure 15 (a) is a schematic cross-sectional view showing a detachable threaded connection structure of an air tube in a milk foaming machine according to a fourth embodiment of the present invention;

Figure 15 (b) is a cross-sectional view showing the detachable threaded connection structure of the air tube in the milk foaming machine provided in the fourth embodiment of the present invention. detailed description The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments.

Embodiment 1:

As shown in FIG. 1 to FIG. 6(b), the present invention provides a milk foaming machine comprising a casing 1 and a container cover 3, and a silicone anti-vibration ring 22 disposed on a side wall of the container cover 3, which is disposed in the casing 1 There is a container 2 and a heating device 4 for heating the container 2 and a magnetic drive device 8, the magnetic drive device 8 includes a motor 81, an active magnet disk 83 and a magnet 82, the active magnet disk is provided with a magnet 82; The magnetic drive device is disposed below the container 2; the agitator 7 disposed in the container 2 has a built-in magnet 71; the agitator 7 is composed of a stirrer skeleton 72, a built-in magnet 71, an elastic tie 73, and an outer side Stainless steel spring 74. The lower end of the outer casing 1 is provided with a power take-off connector 12 and a detachable power take-off base 11, a handle 21 is disposed on the upper portion of the outer casing, and a switch 9 is further disposed on the outer casing; the upper end of the container 2 is provided as an opening, and the container cover 3 is disposed At the upper end of the container 2. The container 2 is provided with an air tube 5 communicating with the outside of the container 2, the air tube 5 is connected with a stirring shaft 6, and the stirring shaft 6 at the outlet of the lower end of the air tube 5 is connected with a stirrer 7, the air The lower end of the tube 5 is provided with an opening, and the agitator 7 and the outlet of the lower end of the air tube 5 have a gap 11 for introducing air into the vicinity of the agitator 7 in the container 2. When the agitator 7 rotates and stirs the milk, the agitator 7 rotates to pour the milk toward the inner wall of the container 2, the milk forms a vortex along the central axis of the agitator 7, and the air in the vortex is continuously mixed by the agitator 7 into the milk. The air inside the container 2 is caused to generate a negative pressure, and the negative pressure causes the outside air of the container 2 to enter the container 2 via the mouth 201 of the container 2 or the small hole 301 provided in the container cover 3; in the agitator 7 Before being covered by the foam, the air is introduced into the vicinity of the agitator 7 both inside and outside the air tube. As the milk foam generated by the stirring of the agitator 7 completely covers the agitator 7, the air passes through the air tube 5 from the air. The lower end of the tube is naturally continuously added to the vicinity of the agitator 7 to provide the air required for the foam to continue to foam; during the entire rotational agitation of the agitator 7, the air naturally enters the vicinity of the agitator 7 due to the negative pressure. Foaming area, no need to add any additional air compression to add equipment, milk foam is more full and delicate, milk foaming amount is significantly increased, milk foam Better durability. In particular, when the agitator is covered by the foam, the air tube 5 can continue to introduce air, which is a beneficial improvement to the conventional mechanical agitation foaming machine, and the effect is obvious.

In the conventional foaming machine, when the foam is covered with the agitator, almost no new air is continuously introduced into the vicinity of the agitator, which affects the subsequent foaming of the milk.

The combination structure of the air tube 5 and the agitator 7 of the present embodiment solves this problem. In a specific application, the container 2 has air introduced from the outside of the container 2 into the interior of the container 2 through the mouth of the container 2 and/or through a slot provided in the container lid 3. The wall of the pipe in which the air pipe 5 is immersed in milk or milk foam must be sealed. The upper part of the pipe exposed to the outside of the milk or milk foam is provided with an air inlet passage or an air inlet hole, and is immersed in the milk under the pipe near the agitator 7. The port portion is unblocked. Of course, air can also be introduced into the opening at the side of the lower port of the air tube 5, so that when the agitator 7 is rotated and agitated, the air can continuously enter the vicinity of the agitator 7 through the pipe to provide continuous foaming of the milk. The air needed.

Specifically, as shown in FIG. 1 to FIG. 6(b), the upper portion of the air tube 5 is connected to the container cover 3 by an external thread or a snap structure; the upper portion of the air tube 5 is further provided with an internal thread 501. The internal thread 501 is coupled to the lower outer thread 551 of the agitator shaft handle 55. The upper end of the agitator shaft 6 is fixedly coupled to the agitator shaft handle 55. The agitator 7 is rotatably coupled to the agitating shaft 6 via an elastic sleeve 56. The lower end. The lower end of the agitating shaft 6 is provided with a blocking edge 611, and the elastic sleeve 56 is in line contact with the blocking edge 611. Specifically, as shown in FIG. 1 to FIG. 6(b), the agitating shaft 6 is fixedly provided with a fixing screw 57, and the fixing screw 57 is screwed with an axial positioning nut 58; the axial positioning nut 58 and the elastic sleeve Adjacent to the 56, the positioning nut 58 serves to resist the slip of the elastic sleeve 56 when the agitator 7 is inserted into the elastic sleeve 56, and restricts the elastic sleeve 56 and the agitation when the agitator 7 rotates. The axial sliding of the device 7 causes the elastic sleeve 56 and the agitator 7 to rotate only circumferentially. The elastic sleeve 56 has stepped inner holes 561 and 561a, and an R-shaped bone position 565 is disposed between the step inner holes 561 and 561a, and the side wall of the elastic sleeve 56 is provided with a notch 562. The diameter of the through hole 561a through which the agitating shaft 6 passes is smaller than the outer diameter of the lower end 611 of the agitating shaft 6, and the inner diameter of the inner hole 561 of the lower portion of the elastic sleeve 56 is larger than the lower end of the agitating shaft 6. The outer diameter of 611, the elastic sleeve 56 is rotatably disposed on the stepped surface 611a of the lower end of the stirring shaft 6, the bone position 565 in the elastic sleeve 56 is in line contact with the stepped surface 611a of the stirring shaft 6, and the stirring shaft 6 is made of stainless steel, and the elastic sleeve 56 is made of non-stainless steel with a small friction coefficient to reduce the rotational friction. According to the elastic size, the notch 562 of the elastic sleeve 56 can be penetrated through the bottom end of the elastic sleeve 56 or not through the elastic sleeve. The bottom end of 56. The agitator 7 has a cylindrical boss 74. The cylindrical boss 74 is inserted into the stepped inner hole 561 of the elastic sleeve 56. The bottom of the circular arc groove 564 of the side wall of the cylindrical boss 74 is provided with Two first rotation preventing surfaces 741 are disposed on the inner side of the elastic sleeve 56 corresponding to the two second rotation preventing surfaces 563 of the first rotation preventing surface 741, and the outer sleeve of the elastic sleeve 56 is elastically disposed. The clip member 59 is used to appropriately increase the clamping force and reliability. The first rotation stop surface 741 of the cylindrical boss 74 at the center of the agitator 7 forms a spring with the second rotation stop surface 563 of the elastic sleeve 56. The detachable buckle is detachable. The elastic clip member 59 may be a stainless steel wire elastic tie or an elastic snap spring that fits within the arcuate groove 564 outside the elastic sleeve 56. The first rotation stop surface 741 and the second rotation stop surface 563 function to: prevent relative rotation between the agitator 7 and the elastic sleeve 56, and ensure that the agitator 7 and the elastic sleeve 56 rotate around the agitating shaft 6.

In this embodiment, as shown in FIG. 1 to FIG. 6(b), by providing an internal thread 501 on the upper portion of the air tube 5, an external thread 551 is provided on the outer side of the lower portion of the agitator shaft handle 55 fixedly coupled to the agitating shaft 6, and the air tube is provided. A detachable threaded connection is made between the 5 and the agitator shaft handle 55 to facilitate cleaning of the air tube 5 and the agitator shaft 6 assembly. After the agitator shaft 6 assembly is connected to the air tube 5, the air tube 5 and the container lid 3 can be snap-fitted or screwed. The fixing screw 57 fixedly disposed on the stirring shaft 6 is screwed to the axial positioning nut 58. After the axial positioning nut 58 and the fixing screw 57 are loosened, the axial positioning nut 58 and the elastic sleeve 56 can be on the shaft of the stirring shaft 6. To the movement, it is convenient to thoroughly clean and disinfect the axial positioning nut 58, the fixing screw 57, the elastic sleeve 56 and the stirring shaft 6. After the axial positioning nut 58 and the fixing screw 57 are fixed in position, when the cylindrical boss 74 of the agitator 7 is inserted into the stepped inner hole 561 of the elastic sleeve 56, the end face A of the axial positioning nut 58 can block the end face B of the elastic sleeve 56. The axial movement ensures that the agitator cylindrical boss 74 can be inserted into position when inserted into the stepped bore 561 of the elastomeric sleeve 56 to ensure a quick and reliable connection of the elastomeric sleeve 56 to the agitator 7. A proper gap is provided between the end face A and the end face B, and does not affect the rotation of the elastic sleeve 56 and the agitator 7. The cylindrical boss 74 of the agitator 7 and the stepped inner hole 561 of the elastic sleeve 56 are detachably and elastically inserted; the axial notch 562 provided on the elastic sleeve 56 functions to: provide the elastic sleeve 56 with a radial direction Flexibility. When the cylindrical boss 74 of the agitator 7 is inserted into the stepped inner hole 561, the second non-rotation surface 563 in the elastic sleeve 56 is radially elastically deformed by the insertion pressure of the cylindrical boss 74 of the agitator 7, on the agitator 7 The first rotation stop surface 741 is engaged with the second rotation stop surface 563 in the elastic sleeve 56. The notch 562 has two configurations of opening and not opening. In order to maintain and increase the durability and reliability of the elastic sleeve 56, an elastic circlip or elastic zipper 59 is disposed in the arcuate groove 564 on the outer cylindrical surface of the elastic sleeve 56.

When the product is working, the air tube 5, the agitating shaft 6, and the axial positioning nut 58 remain not rotated. The agitator 7 and the elastic sleeve 56, which are connected to each other, are rotated about the agitating shaft 6 by the magnetic force of the active magnet disk 83 on the motor 81.

With such a design, the agitator 7 is inserted and connected with the elastic sleeve 56 and pulled out to operate the cartridge. Moreover, the detachable structural design facilitates cleaning of the air tube 5, the agitator shaft assembly, the agitator 7, and the container cover 3. Embodiment 2:

As shown in FIG. 7 and FIG. 8, the second embodiment has the same principle as that of the first embodiment, and the structure is similar, and the difference is that the agitation shaft 6 is connected to the air tube 5 in a different manner.

Specifically, as shown in FIG. 7, in the present embodiment, the lower end of the air tube 5 is provided with an opening, the agitator 7 is close to the lower end of the air tube 5, and the agitator 7 and the lower end of the air tube 5 are provided for air. The gaps H, 4 introduced into the container 2 utilize the negative pressure of the air formed by the swirling of the milk along the central axis of the agitator 7 and flow, so that the air can be continuously sucked into the vortex from the outside of the container 2 through the air tube, especially After the agitator is covered by the milk foam, the air can continue to enter the area near the agitator, so that the milk is better and more fully foamed. Of course, it is also possible to introduce air at the opening at the side of the lower end of the air tube 5. In specific applications, the wall of the pipe in which the air pipe 5 is immersed in milk or milk foam must be sealed. The upper part of the pipe exposed to the outside of the milk or milk foam is provided with an air inlet passage or an air inlet hole, and is immersed in the milk close to the agitator. The lower mouth of the pipe of 7 is unobstructed, and when the agitator 7 is rotated and agitated, air can continue to enter the area near the agitator 7 through the pipe to provide the air required for the foam to continue to foam.

Specifically, as shown in Fig. 7, the side wall of the container lid 3 is provided with a silicone anti-vibration rim 22. A handle 21 is attached to the outer side of the outer casing 1.

Specifically, as shown in Figs. 7 and 8, the agitator 7 incorporates a magnet 71 composed of an agitator skeleton 72, a built-in magnet 71, an elastic zipper 73, and a stainless steel spring 74 disposed outside. A magnetic drive device 8 for driving the agitator 7 is disposed under the container 2; the magnetic drive device 8 includes a motor 81, an active magnet disk 83 and a magnet 82. The active magnet disk 83 is fixedly coupled to the rotating shaft of the motor 81 and is coaxially located at the agitator. Below the seventh, the active magnet disk 83 has a magnet 82 built therein.

Specifically, as shown in FIG. 7 and FIG. 8 , the heating device 4 is fixedly disposed on the outer surface and/or the side surface of the bottom of the container 2 , and the motor 81 and the active magnet disk 83 are disposed below the bottom surface of the container 2 , and a temperature controller is further disposed. The base of the outer casing 1 is provided with an electronic board 84, and a power take-off connector 12, and a detachable power take-off base 11. The heating device 4 may be an infrared heating device, an electromagnetic induction heating device, or a resistive heating plate heating device.

Specifically, as shown in FIG. 10, the upper end of the air tube 5 is connected to the container cover by a snap structure or a screw 3. For example, two snap connection slots 31 can be symmetrically disposed in the container cover 3, and the two short cylinders 51 symmetrically disposed at the upper end of the air tube 5 can be screwed into the snap connection slots 31, or can be concave-convex fit. The buckle structure connects the upper end of the air tube 5 to the container cover 3, or the air tube 5 and the container cover 3 are screwed, and the air tube 5 is easily disassembled and assembled, which is convenient for the user to clean.

As a manner of realizing the quick release function, in the embodiment, as shown in FIG. 7 to FIG. 13 , the air tube 5 is internally provided with an elastic clamping sleeve 51 , and the elastic clamping sleeve is provided with a notch 520 and a stirring shaft 6 can be quickly inserted into the inner hole between the elastic sleeves 51 in the form of an open sleeve. In the present embodiment, the air tube 5 has a support portion 52 inside, and the support portion 52 is provided with a hole 521 for supplying air. The upper end of the elastic gripping sleeve 51 is fixedly coupled or integrally formed at the lower end of the support portion 52.

Specifically, as shown in FIG. 8, FIG. 12 and FIG. 13, the elastic clamping sleeve 51 is symmetrically disposed with two rotation preventing planes 511, and the side surface of the stirring shaft 6 is correspondingly provided with a rotation preventing plane 601, when the stirring shaft 6 is When the inner hole of the elastic clamping sleeve 51 is inserted, the rotation preventing planes 511 and 601 abut against each other and are elastically clamped to prevent the agitating shaft 6 from rotating and falling off, and the agitator 7 lower portion 72 and the agitating shaft 6 stepped surface 61 Line contact.

Specifically, as shown in FIGS. 10 to 13, the outer side of the elastic clamping sleeve 51 is provided with an elastic clip member 53 to appropriately increase the clamping force and improve the reliability. The elastic clip member 53 may be a stainless steel wire elastic ties or a stainless steel elastic circlip, which can keep the notched elastic clamping sleeves 51 facing each other to clamp the stirring shaft 6, and the rotation reliability is high. Using the general force, directly pull the agitator 7, the agitator shaft 6 - is pulled out, easy to disassemble, realizes the function of quick release, and facilitates the cleaning of the agitator 7 and the air tube 5.

Specifically, as shown in Fig. 8, the lower end of the agitating shaft 6 is provided with a step 61 for supporting the agitator 7, and the step 61 is in line contact with the agitator 7. In a specific application, the lower end of the agitator 7 is provided with a contact ring 72 having an arcuate end face to reduce friction.

Specifically, as shown in FIG. 8 and FIG. 9, the outer side of the elastic clamping sleeve 51 is provided with a card slot 510, and the elastic clip member 53 is locked in the card slot 510 to prevent the elastic clip member 53 from falling off and the structure reliability is high.

In a specific application, the elastic clamping sleeve 51 may be provided with at least two notches. In the milk foaming machine provided in this embodiment, the whole process of continuously stirring the milk, the air relies on the negative pressure, and continuously enters the vicinity of the agitator 7 through the air tube 5, so that the milk continues to foam, and the structure is simple, and the production is simple. Fast assembly, low cost, easy to use, easy to clean, and economical to use.

The working process of the milk foaming machine provided in this embodiment is as follows:

When the switch is energized and the switch is started, the circuit board 84 supplies power to the motor 81, and the motor 81 drives the active magnet disk 83 fixed on the shaft of the motor 81 to rotate, and the magnet (active magnet 82) built in the active magnet plate 83 is stirred. The magnet (magnet 71) built in the device 7 acts magnetically, causing the agitator 7 to follow the rotation of the active magnet disk 83. Embodiment 3:

This embodiment is identical to the principle of the second embodiment, and differs from the milk foaming machine of the second embodiment in that the structure of the quick release function of the agitator is different.

As another way of realizing the quick release function, in the embodiment, as shown in FIG. 14, the rotating shaft 6 is provided with a rotating connecting ring 66, the rotating connecting ring 66 has a built-in magnet 63, and the agitator 7 has a built-in The magnet 71 and the rotary connecting ring 66 are magnetically connected to the agitator 7. The agitator 7 is magnetically attracted to the magnet 63, and the user can conveniently remove the agitator 7 for cleaning.

Specifically, the magnetic pole N of the upper magnet surface of the built-in magnet 71 of the agitator 7 and the lower magnet surface magnetic pole S of the built-in magnet 63 of the rotary connecting ring 66 are magnetically detachably connected, and the built-in magnet of the agitator 7 The magnetic pole S of the lower magnet surface of the motor 71 and the magnet 82 of the active magnet disk 83 of the motor 81 form a magnetic drive rotation, and the magnetic attraction between the magnets 71 and 63 is greater than the magnetic attraction between the magnets 71 and 82. After the stirrer 7 is magnetically attracted and coupled to the rotary connecting ring 66, the stirrer 7 is not rotated by the magnetic force of the active magnet disk 83 on the motor 81. The rotary joint ring 66.

Specifically, as shown in FIG. 14 , the air tube 5 is internally provided with a support portion 52 and a through hole 521 . The upper end of the agitating shaft 6 is fixedly connected to the support portion 52 . The lower end of the agitating shaft 6 is fixedly provided with a fixing 圏 64 for fixing 圏A spacer 65 is attached to the upper end of the 64, and the spacer 65 may be a stainless steel spacer. The rotating sleeve 6 is provided with a rotating connecting ring 66. The rotating connecting ring 66 is provided with a curved ring 661. The R-shaped ring 661 of the rotating connecting ring 66 is located at the upper end of the spacer 65 and between the spacer 65. The wire contacts to reduce the friction; the agitator 7 is placed on the agitating shaft 6 and attached to the lower end of the rotary connecting ring 66 under the action of a magnetic force. The fixed jaw 64 is used to support the rotary joint 66. The upper end of the agitator 7 is provided with a ring-shaped arcuate end 73 which is used to reduce the frictional force between the agitator 7 and the fixed crotch end face when the agitator 7 is strung in the force imbalance. Embodiment 4:

In the present embodiment, as shown in Figs. 15(a) and 15(b), the difference from the milk foaming machine of the second embodiment and the third embodiment is the structure of the air tube 5.

Specifically, in the embodiment, the air tube 5 includes an air tube upper section 511 and an air tube lower section 512, and the air tube upper section 511 and the air tube lower section 512 are screwed, and the air tube upper section 511 A seal ring 513 is disposed between the lower portion 512 of the air tube. It is convenient to disassemble and clean the air tube 5. The agitator shaft 6 is coupled to the lower portion 512 of the air tube.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. These improvements and retouchings are also considered. It is the scope of protection of the present invention.

Claims

Claim

A milk foaming machine comprising a casing and a container cover, wherein the casing is provided with a container and a heating device and a magnetic driving device for heating the container, the magnetic driving device being disposed under the container; The upper end of the container is provided as an opening, and the container cover is disposed at an upper end of the container, wherein the container is provided with an air tube communicating with the outside of the container, and the air tube is connected with a stirring shaft. An agitator is connected to the agitating shaft at the outlet of the lower end of the air tube, and the lower end of the air tube is provided with an opening.

2 . The milk foaming machine according to claim 1 , wherein an upper portion of the air tube is connected to the container cover by an external thread or a snap structure; and an upper portion of the air tube is further provided with an internal thread, A stirring shaft handle is connected to the internal thread, and an upper end of the stirring shaft is fixedly connected to the stirring shaft handle, and the agitator is rotatably connected to the lower end of the stirring shaft through an elastic sleeve.

The milk foaming machine according to claim 2, wherein the agitating shaft is fixedly provided with a fixing screw, the fixing screw is screwed with an axial positioning nut, and the positioning nut is used for When the agitator is inserted into the elastic sleeve, it acts to resist the slip of the elastic sleeve; the elastic sleeve has a step inner hole, the side wall of the elastic sleeve is provided with a notch, and the upper part of the elastic sleeve is provided for the stirring shaft The diameter of the through hole passing through is smaller than the outer diameter of the step surface of the lower end of the stirring shaft, and the diameter of the inner hole of the lower portion of the elastic sleeve is larger than the outer diameter of the step surface of the lower end of the stirring shaft, and the elastic sleeve is rotatably disposed on the a step surface of the lower end of the agitating shaft and in contact with the step surface; the center of the agitator has a cylindrical boss, and the bottom of the arc groove of the side wall of the cylindrical boss is provided with two first rotation preventing surfaces, The inner side of the elastic sleeve is correspondingly provided with two second rotation preventing surfaces abutting against the first rotation preventing surface, and the outer sleeve of the elastic sleeve is sleeved with an elastic clip member, and the cylindrical convex portion of the center of the agitator First stop surface of the table An elastic snap-fit detachable connection is formed with the second rotation stop surface on the inner side of the elastic sleeve.

The milk foaming machine according to claim 1, wherein the inner portion of the air tube is provided with an elastic clamping sleeve, the elastic clamping sleeve is provided with a notch, and the side of the stirring shaft is provided with a stop. a rotating surface, the inner side wall of the elastic clamping sleeve is correspondingly provided with a rotation preventing portion which is adjacent to the rotation preventing plane of the side of the stirring shaft, and the outer side of the elastic clamping sleeve is further provided with an elastic clamping member. The stirring shaft is rotatably connected to the central hole of the agitator, and the lower part of the agitator is in line contact with the step surface of the agitating shaft, and the agitating shaft is inserted into the inner hole of the elastic clamping sleeve to form an elastic detachable anti-rotation connection.

The milk foaming machine according to claim 1, wherein the air tube is internally provided with a support portion, and an upper end of the stirring shaft is fixedly coupled to the support portion; a fixed cymbal is disposed, the upper end of the fixed cymbal is connected with a gasket passing through the agitating shaft, and a rotating connecting ring passing through the stirring shaft is disposed above the shims, and the rotating connecting ring has a built-in magnet The rotating connecting ring is located at an upper end of the gasket and is in line contact with the gasket, and the agitator is rotatably sleeved on the stirring shaft and forms a detachable magnetic connection with the rotating connecting ring.

The milk foaming machine according to any one of claims 1 to 5, wherein a lower end of the air tube is provided with an opening, and the agitator is disposed at a lower end outlet of the air tube There is a gap between the agitator and the outlet of the lower end of the air tube for introducing air into the vicinity of the agitator in the container.

The milk foaming machine according to any one of claims 1 to 5, wherein the magnetic drive device comprises a motor and an active magnet disk, and the active magnet disk is provided with a magnet, the agitator Correspondingly, a magnet is disposed in the middle; the active magnet disk is fixedly connected to the rotating shaft of the motor and is coaxially located below the agitator.

The milk foaming machine according to any one of claims 1 to 4, wherein the air tube comprises an upper portion of the air tube and a lower portion of the air tube, and between the upper portion of the air tube and the lower portion of the air tube A detachable threaded connection or a snap connection is used, and a sealing jaw is disposed between the upper portion of the air tube and the lower portion of the air tube.

The milk foaming machine according to any one of claims 1 to 5, wherein the container has air passing through a mouth of the container and/or through a slot provided in the container cover Introduced from the outside of the container to the inside of the container.

The milk foaming machine according to any one of claims 1 to 5, wherein a temperature controller is further disposed under the bottom surface of the container, and the control circuit board is further provided on the outer casing base to take power Connector and detachable power take-off base.