Brewing cylinder, brewing device and water making machine

Abstract

The invention discloses a brewing cylinder, a brewing device and a water making machine. The brewing cylinder comprises an outer cylinder sleeve, an inner cylinder barrel and a limiting piece. A mounting channel is vertically formed in the outer cylinder sleeve in a penetrating manner, and a mounting groove communicated to the mounting channel is concavely formed in the end face of the outer cylinder sleeve; the inner cylinder barrel is inserted into the mounting channel; the limiting piece comprises a main body part assembled in the mounting groove and a limiting part extending towards the mounting channel, and the limiting part is connected with the exposed peripheral side wall of the inner cylinder barrel so as to at least limit the inner cylinder barrel from being disengaged outwards from the interior of the mounting channel. After the inner cylinder sleeve is inserted into the mounting channel, the main body part of the limiting piece is fixed relative to the outer cylinder sleeve. And then the limiting part is connected with the inner cylinder barrel, so that the connection strength between the inner cylinder barrel and the outer cylinder sleeve can be enhanced. In this way, the size requirements for the outer diameter of the inner cylinder sleeve and the inner diameter of the mounting channel can be properly reduced, and the inner cylinder barrel can be more conveniently and smoothly inserted into the mounting channel. According to the invention, the assembly stability and the assembly smoothness can be ensured to be compatible and sufficiently matched.

Description

Technical Field

[0001] The present invention relates to the technical field of beverage making equipment, and in particular to a brewing cylinder, a brewing device and a beverage making machine. Background Art

[0002] The brewing cylinder of a beverage-making device, such as a coffee machine, is typically used to receive coffee grounds and brew the liquid coffee. It is typically made of high-temperature-resistant, food-grade metal or ceramic materials. Metal has good thermal conductivity but poor heat preservation. Ceramics, on the other hand, offer better heat preservation, but require extensive preheating and are fragile.

[0003] To this end, there is a brewing cylinder made of an inner cylinder and an outer cylinder sleeve. As mentioned above, the inner cylinder mainly serves to receive coffee powder and brew coffee liquid. The outer cylinder sleeve is sleeved on the periphery of the inner cylinder and is used to connect to a drive mechanism so that it can drive the inner cylinder to switch between a powder receiving position and a brewing position under the drive of the drive mechanism. However, the existing inner cylinder and outer cylinder sleeve are generally fitted together by an interference fit, which makes it difficult to balance assembly stability and assembly smoothness, and easily leads to poor assembly effect. In addition, in order to ensure the sealing of coffee brewing, the inner wall processing precision of the brewing cylinder is very high. The one-piece brewing cylinder is very difficult to process the inner wall of the cylinder. The brewing cylinder is set as an inner and outer layer structure. On the one hand, it is convenient to process the inner wall of the brewing cylinder, and on the other hand, it is convenient to replace the inner cylinder. However, since the cylinder body is a cylindrical structure, the inner cylinder will undergo relative rotational displacement relative to the outer cylinder sleeve. Summary of the Invention

[0004] The main purpose of the present invention is to provide a brewing cylinder, a brewing device and a beverage making machine, aiming to solve the problem that the inner cylinder barrel and the outer cylinder sleeve in the traditional brewing cylinder are easily fitted through interference fit, which easily leads to poor assembly effect.

[0005] To achieve the above-mentioned purpose, the present invention provides a brewing cylinder, comprising:

[0006] The outer cylinder sleeve is provided with a mounting channel in the vertical direction, and the end surface of the outer cylinder sleeve is provided with a mounting groove connected to the mounting channel;

[0007] an inner cylinder, inserted into the mounting channel; and

[0008] The limiting member includes a main body assembled in the installation groove and a limiting portion extending toward the installation channel, wherein the limiting portion is connected to the exposed outer peripheral side wall of the inner cylinder to at least limit the inner cylinder from escaping out of the installation channel.

[0009] Optionally, the limiting portion interferes with and abuts against an exposed outer peripheral side wall of the inner cylinder, so as to at least limit the inner cylinder from falling out of the installation channel.

[0010] Optionally, the outer peripheral side wall of the inner cylinder is provided with a matching portion at least at a portion exposed in the mounting groove, and the matching portion and the limiting portion are limitedly matched.

[0011] Optionally, one of the limiting portion and the matching portion is a latching protrusion, and the other is a latching groove.

[0012] Optionally, the groove is adapted to extend in an arc shape to the outer peripheral side wall of the inner cylinder; and / or,

[0013] The free end surface of the locking protrusion is configured to be in the shape of a concave arc surface adapted to the shape of the locking groove.

[0014] Optionally, the limiting member is detachably connected to the outer cylinder sleeve via a connecting member.

[0015] Optionally, the brewing cylinder further includes a fastener, which includes a pressing portion. The pressing portion is stacked on a side of the main body facing away from the bottom wall of the mounting groove and is detachably connected to the outer cylinder sleeve via a connecting piece.

[0016] Optionally, the mounting groove is further provided with a slot on a side away from the mounting channel;

[0017] The fastener further includes an extension portion, which is arranged on a side of the pressing portion facing away from the installation channel and is inserted and connected to the slot.

[0018] Optionally, the pressing portion extends toward the mounting channel until it abuts against an outer peripheral side wall of the inner cylinder.

[0019] Optionally, the inner cylinder has a first end and a second end that are oppositely disposed, and an annular step is protruded from an outer peripheral side wall of the inner cylinder near the second end, and the annular step has a step surface facing the first end;

[0020] After being inserted into the installation channel, the outer peripheral side wall of the inner cylinder barrel near the first end is partially exposed in the installation groove, the annular step extends out of the installation channel, and the step surface abuts against the end surface of the outer cylinder sleeve.

[0021] In addition, to achieve the above-mentioned purpose, the present invention further provides a brewing cylinder, comprising:

[0022] The brewing part includes an outer cylinder sleeve and an inner cylinder barrel, wherein the outer cylinder sleeve is vertically penetrated by a mounting channel, and the inner cylinder barrel is inserted into the mounting channel;

[0023] a rotating part, used to connect with the driving component, wherein the rotating part is spaced apart and arranged on one radial side of the outer cylinder sleeve, and the axis of the outer cylinder sleeve is parallel to the axis of the brewing part;

[0024] a connecting portion connected at a gap between the outer cylinder sleeve and the rotating portion; and

[0025] A limiting member is connected between the connecting portion and the inner cylinder to at least limit the inner cylinder from escaping out of the installation channel.

[0026] Optionally, the limiting member includes a main body portion provided on the connecting portion, and a limiting portion provided on the inner cylinder;

[0027] The main body and the connecting portion are integrally formed; or

[0028] After the main body and the connecting portion are separately formed, they are connected and fixed detachably or non-detachably; or

[0029] The limiting portion is integrally formed with the inner cylinder; or

[0030] After the limiting portion and the inner cylinder are separately formed, they are connected and fixed in a detachable or non-detachable manner.

[0031] Optionally, one end portion of the outer cylinder sleeve is protruding from the connecting portion, and a notch is provided on a side of the protruding portion facing the connecting portion;

[0032] After the inner cylinder is inserted into the installation channel, a portion of the inner cylinder is exposed outward from the notch.

[0033] Optionally, the limiting member passes through the notch and is connected to the exposed portion of the inner cylinder to limit the axial movement of the inner cylinder relative to the outer cylinder sleeve.

[0034] Optionally, the brewing cylinder further includes a fastener, which includes a pressing portion. The pressing portion is stacked on a side of the limiting member facing away from the connecting portion and is detachably connected to the outer cylinder sleeve via a connecting member.

[0035] In addition, to achieve the above-mentioned purpose, the present invention further provides a brewing cylinder, comprising:

[0036] The brewing part includes an outer cylinder sleeve and an inner cylinder barrel, wherein the outer cylinder sleeve is vertically penetrated by a mounting channel, and the inner cylinder barrel is inserted into the mounting channel;

[0037] a rotating part, used to connect with the driving component, wherein the rotating part is spaced apart and arranged on one radial side of the outer cylinder sleeve, and the axis of the outer cylinder sleeve is parallel to the axis of the brewing part;

[0038] a connecting portion connected at a gap between the outer cylinder sleeve and the rotating portion; and

[0039] A limiting member is fixed to the connecting portion and extends toward the inner cylinder to partially engage the cylinder wall of the inner cylinder to limit the movement of the inner cylinder relative to the outer cylinder sleeve.

[0040] In addition, to achieve the above-mentioned purpose, the present invention also provides a brewing device, comprising the brewing cylinder as described above.

[0041] In addition, to achieve the above-mentioned purpose, the present invention also provides a beverage maker, comprising the brewing device as described above.

[0042] In the technical solution provided by the present invention, after the inner cylinder sleeve is inserted into the installation channel, the main body of the limiter is fixed relative to the outer cylinder sleeve. Then, the connection strength between the inner cylinder and the outer cylinder sleeve can be strengthened by connecting the limiter and the inner cylinder barrel. In this way, the dimensional requirements for the outer diameter of the inner cylinder sleeve and the inner diameter of the installation channel can be appropriately reduced, so that the installation channel can be more convenient for the smooth insertion of the inner cylinder barrel. The present application ensures that both assembly stability and assembly smoothness can be achieved and are sufficiently adaptable. The opening of the installation groove can effectively accommodate the main body of the limiter and can play a certain positioning and limiting role on the main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0044] Figure 1 A three-dimensional schematic diagram of an embodiment of a brewing cylinder provided by the present invention;

[0045] Figure 2 for Figure 1 Schematic diagram of the main structure of the middle brewing tank;

[0046] Figure 3 for Figure 1 Schematic diagram of the middle and outer cylinder sleeves;

[0047] Figure 4 for Figure 1 A three-dimensional schematic diagram of the inner cylinder;

[0048] Figure 5 for Figure 1 A three-dimensional schematic diagram of the middle limiter;

[0049] Figure 6 for Figure 1 Schematic diagram of the fastener.

[0050] Description of Figure Numbers:

[0051] 10 brewing part; 100 outer cylinder sleeve; 110 installation channel; 120 installation groove; 130 slot; 140 notch; 200 inner cylinder; 201 first end; 202 second end; 210 annular step; 211 step surface; 220 matching part; 300 limiter; 310 main body; 320 limiter; 400 fastener; 410 pressing part; 420 extension part; 500 connecting part; 60 rotating part; 70 connecting part.

[0052] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0054] 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.

[0055] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0056] See also Figures 1 to 6 The present invention provides a brewing cylinder and an applicable brewing device and beverage making machine.

[0057] The beverage making machine may be a brewing machine that is only used to brew the raw materials, or the beverage making machine may also be equipped with one or more of the functions of grinding, mixing, cleaning, heating, etc.

[0058] In addition to the brewing cylinder, the brewing device may also include, for example, a drive mechanism. The drive mechanism is located within the beverage maker and is drivably connected to the brewing cylinder. Driven by the drive mechanism, the brewing cylinder can move in any suitable manner as needed, for example, from a pre-set powder receiving position to a pre-set brewing position.

[0059] In addition, for ease of understanding, in the following embodiments, the brewing cylinder, the brewing device, and the beverage maker are described as having corresponding vertical and horizontal directions, wherein the vertical and horizontal directions are substantially perpendicular.

[0060] In view of this, please combine Figures 1 to 6 The brewing cylinder provided by the present invention may include a brewing part 10, a rotating part 60, a connecting part 70 and a limiting member 300.

[0061] The brewing part 10 includes an outer cylinder sleeve 100 and an inner cylinder barrel 200. The outer cylinder sleeve 100 is vertically penetrated by a mounting channel 110. The inner cylinder barrel 200 is inserted into the mounting channel 110.

[0062] The rotating part 60 is used to connect with the driving component. The rotating part 60 is spaced apart and arranged on one radial side of the outer cylinder sleeve 100. The axis of the outer cylinder sleeve 100 is parallel to the axis of the brewing part 10.

[0063] The connecting portion 70 is connected at a gap between the outer cylinder liner 100 and the rotating portion 60 .

[0064] The limiting member 300 is connected between the connecting portion 70 and the inner cylinder 200 to at least limit the inner cylinder 200 from escaping outward from the installation channel 110 .

[0065] It can be understood that the space defined by the inner cylinder 200 in the brewing part 10 can be used to brew and extract, for example, powdered materials, and ultimately obtain a beverage.

[0066] During use, the brewing part 10 can be set to be movable relative to the housing of the beverage maker. Therefore, according to actual needs, preset functions can be associated with preset positions in the movement trajectory of the brewing part 10. For example, the brewing part 10 has a powder receiving position, a brewing position and a scraping position during its movement. When it moves to the powder receiving position, the inner cylinder 200 can receive the powder provided directly by the hopper, or it can receive the powder obtained by grinding the bean material by the grinding module. When it moves to the brewing position, the powder received in the inner cylinder 200 can be pressurized and brewed by, for example, a piston part, a liquid supply component, etc. When it moves to the scraping position, the residue remaining on the inner wall of the inner cylinder 200 can be cleaned by, for example, a piston part and a scraping plate.

[0067] The brewing position and the scraping position can be two different positions, or the brewing position and the scraping position can be the same position.

[0068] The movement of the brewing portion 10 is not limited to any specific movement, and may be, but is not limited to, translational movement along a certain direction. Alternatively, it may be rotational movement about a certain vertical axis. In the case of rotational movement, the movement of the brewing portion 10 requires a pre-set drive component in the brewing device to drive it.

[0069] Based on this, the rotating part 60 can be connected and fixed with the driving component. Since the axis of the rotating part is parallel or nearly parallel to the axis of the brewing part 10, when the rotating part 60 is driven by the driving component to rotate, it can also drive the brewing part 10 to rotate, thereby realizing flexible switching between the powder receiving position and the brewing position / scraping position.

[0070] The rotating part 60 and the brewing part 10 are spaced apart in the radial direction so that the brewing part 10 forms a sufficient rotation radius. The connecting part 70 is provided at the interval between the rotating part 60 and the brewing part 10. The connecting part 70 connects the rotating part 60 and the brewing part 10.

[0071] It should be noted that the rotating portion 60 and the connecting portion 70 may be integrally formed, or the rotating portion 60 and the connecting portion 70 may be separately formed and then detachably or non-detachably connected.

[0072] Similarly, the brewing part 10 and the connecting part 70 can be integrally formed. Alternatively, the brewing part 10 and the connecting part 70 can be separately formed and then detachably or non-detachably connected.

[0073] The limiting member 300 is provided at the connecting portion 70 and the inner cylinder 200 , so that the movement of the inner cylinder 200 can be restricted by means of the connecting portion 70 .

[0074] Among them, if the limiting part 300 is defined as including a main body 310 provided on the connecting part 70, and a limiting part 320 provided on the inner cylinder 200. Then specifically, the main body 310 can be integrally formed with the connecting part 70. Alternatively, the main body 310 can also be connected and fixed to the connecting part 70 in a detachable or non-detachable manner after being separately formed. Similarly, the limiting part 320 can be integrally formed with the inner cylinder 200. Alternatively, the limiting part 320 can also be connected and fixed to the inner cylinder 200 in a detachable or non-detachable manner after being separately formed.

[0075] The one-piece molding arrangement can simplify the molding and assembly of the stopper 300, the connecting portion 70, and the inner cylinder 200. The separate molding arrangement can provide more flexibility in the selection of materials, molding methods, etc. for the stopper 300, the connecting portion 70, and the inner cylinder 200.

[0076] However, it should be noted that when one of the connecting part 70 and the inner cylinder 200 is integrally formed with the limiting member 300, the other one is generally configured to be separately formed from the limiting member 300 to adapt to the detachable connection of the inner cylinder 200 relative to the outer cylinder sleeve 100.

[0077] Generally, the main portion 310 of the stopper 300 is located at the connecting portion 70. The stopper portion 320 needs to extend toward the inner cylinder 200 and be connected and fixed to the inner cylinder 200 in any of the above-mentioned ways. The main purpose of the stopper 300 is to limit the movement of the inner cylinder 200 relative to the outer cylinder liner 100, especially to limit the axial movement of the inner cylinder 200 relative to the outer cylinder liner 100.

[0078] However, if the axial end surfaces between the outer cylinder sleeve 100 and the connecting portion 70 are not flush, or if the connecting portion 70 is partially recessed for the main body 310 so that the axial end surface of the outer cylinder sleeve 100 protrudes relative to the recessed portion, or if the axial end surface of the outer cylinder sleeve 100 protrudes relative to the connecting portion 70 regardless of whether the connecting portion 70 is recessed, a notch 140 may be provided on the side of the outer cylinder sleeve 100 facing the protruding portion of the connecting portion 70.

[0079] After the inner cylinder 200 is inserted into the installation channel 110, a portion of it is exposed through the notch 140. The stopper 300 then passes through the notch 140 and connects with the exposed portion of the inner cylinder 200, restricting the axial movement of the inner cylinder 200 relative to the outer cylinder sleeve 100. The notch 140 leaves ample space for the stopper 300 to better connect with the inner cylinder 200.

[0080] Based on one or more of the above embodiments, when the wall thickness of the outer cylinder sleeve 100 near the rotating portion 60 is sufficiently thick, or when the outer cylinder sleeve 100 and the connecting portion 70 are integrally formed, the connecting portion 70 is equivalent to constituting a part of the outer cylinder sleeve 100. The following, based on this setting (i.e., the connecting portion 70 is regarded as a part of the outer cylinder sleeve 100) as an example, will specifically describe the specific connection scheme of the limiting member 300 at the connecting portion 70 and the brewing portion 10.

[0081] The outer cylinder sleeve 100 has a mounting groove 120 on one vertical end surface thereof, which is connected to the mounting channel 110. The connection between the mounting groove 120 and the mounting channel 110 can be referred to as a communication port. The communication port runs through the same vertical end of the outer cylinder sleeve 100.

[0082] The inner cylinder 200 is inserted into the installation channel 110. After being inserted into place, at least a section of the inner cylinder 200 is exposed in the installation groove 120. That is, the insertion height of the inner cylinder 200 is at least such that the end of the inner cylinder 200 is higher than the edge of the communication port.

[0083] The limiting member 300 includes a main body 310 assembled in the mounting groove 120 and a limiting portion 320 extending toward the mounting channel 110. The limiting portion 320 is connected to the exposed outer peripheral sidewall of the inner cylinder 200 to at least limit the inner cylinder 200 from escaping from the mounting channel 110.

[0084] In the technical solution provided by the present invention, after the inner cylinder liner is inserted into the mounting channel 110, the main body 310 of the retaining member 300 is fixed relative to the outer cylinder liner 100. The retaining member 320 is then connected to the inner cylinder barrel 200, thereby strengthening the connection strength between the inner cylinder barrel 200 and the outer cylinder liner 100. This can appropriately reduce the dimensional requirements for the outer diameter of the inner cylinder liner and the inner diameter of the mounting channel 110, making the mounting channel 110 more convenient for the smooth insertion of the inner cylinder barrel 200.

[0085] The present application ensures that both assembly stability and assembly smoothness can be achieved and are sufficiently adaptable. The installation groove 120 can effectively accommodate the main body 310 of the limiting member 300 and can play a certain positioning and limiting role on the main body 310.

[0086] The main body 310 and the limiting portion 320 of the limiting member 300 can be integrally formed. Alternatively, the main body 310 and the limiting portion 320 can be separately formed and then detachably or non-detachably connected to obtain the same.

[0087] In order to prevent the inner cylinder 200 from being dislodged from the mounting channel 110 , there are several options for the limiting portion 320 :

[0088] For example, in one application, the stopper 320 interferes with and abuts the exposed outer peripheral sidewall of the inner cylinder 200, thereby at least limiting the inner cylinder 200 from being dislodged from the mounting channel 110. That is, the stopper 320 and the exposed outer peripheral sidewall of the inner cylinder 200 are in contact with each other. This ensures that during the contact process, sufficient interference is formed between the stopper 320 and the outer peripheral sidewall of the inner cylinder 200. This interference is sufficient to constrain the movement of the inner cylinder 200 relative to the outer cylinder sleeve 100.

[0089] Based on this, the interference amount can be mainly generated in the limiting portion 320. Correspondingly, the outer peripheral side wall exposed by the inner cylinder 200 can maintain the original structural features without any structural improvement.

[0090] For example, in one embodiment, the end of the main body 310 facing the mounting channel 110 may be provided with a roughened protrusion. This roughened protrusion constitutes the stopper 320. This roughened protrusion abuts against the exposed outer peripheral sidewall of the inner cylinder 200, and the friction generated therebetween is sufficient to maintain the inner cylinder 200 stationary relative to the outer cylinder sleeve 100.

[0091] Alternatively, the outer peripheral sidewall of the inner cylinder 200 is provided with a mating portion 220 at least in the portion exposed within the mounting groove 120. The mating portion 220 and the limiting portion 320 are mutually restrained. In other words, the aforementioned interference is generated by the limiting portion 320 and the mating portion 220. Accordingly, structural improvements need to be made to the exposed outer peripheral sidewall of the inner cylinder 200.

[0092] For example, in one embodiment, one of the limiting portion 320 and the matching portion 220 is a protrusion, and the other is a groove. Figures 2 to 5 As shown, the limiting portion 320 is a latching protrusion, and the matching portion 220 is a latching groove. The latching protrusion is partially or completely inserted into the latching groove, which can form a vertical movable constraint between the inner cylinder 200 and the outer cylinder sleeve 100.

[0093] In a further embodiment, the slot can be adapted to the shape of the outer peripheral side wall of the inner cylinder 200 and extend in an arc shape. The slot with an arc-shaped extension can appropriately extend the concave-convex adaptation length between the slot and the protrusion. The protrusion can be extended to the length of the slot. Alternatively, the protrusion can be set to be shorter than the length of the slot. In this way, any groove segment within the arc length range defined by the slot can be engaged with the protrusion. This helps to reduce the circumferential size requirements of both the protrusion and the slot to a certain extent.

[0094] Alternatively, the retaining groove can be adapted to form an annular ring around the outer circumferential sidewall of the inner cylinder 200. This effectively creates a circumferential constraint between the inner cylinder 200 and the outer cylinder liner 100. The inner cylinder 200 can be rotated arbitrarily, allowing for any desired circumferential adjustment. This allows the retaining groove to engage with the retaining projection at any circumferential section of the inner cylinder 200.

[0095] In a further embodiment, the free end surface of the latching protrusion is configured to be concavely curved to conform to the shape of the slot. This ensures that when the latching protrusion is inserted into the slot, the free end surface of the latching protrusion and the bottom wall of the slot fit closely together, creating a sufficiently large contact area. This also helps minimize unnecessary assembly gaps between the two.

[0096] In a further embodiment, at least the portion of the latching projection that engages the slot and / or a portion of the inner wall of the slot may be provided with an elastic structure, with the outer diameter of the latching projection appropriately larger than the inner diameter of the slot. The elastic structure may be, for example, a layer of elastic material. In this way, the elastic deformation of the elastic structure can increase the engagement strength between the latching projection and the slot, thereby enhancing the retaining effect of the retaining member 300 on the inner cylinder 200. However, it should be noted that the elastic structure should meet the application requirements of the brewing cylinder as much as possible, for example, by selecting a relatively high-temperature-resistant material.

[0097] For example, in another embodiment, one of the limiting portion 320 and the mating portion 220 is a magnetic attraction structure, and the other is a magnetic mating structure. The magnetic attraction structure and the magnetic mating structure are magnetically attracted to each other. The magnetic attraction structure is, for example, a magnet or an electromagnet. For example, when the inner cylinder 200 is made of a metal material, and further, when the metal material includes one or more of iron, cobalt, and nickel materials, the inner cylinder 200 as a whole constitutes the magnetic mating structure.

[0098] For example, in another embodiment, one of the limiting portion 320 and the matching portion 220 is a suction cup structure, and the other is a matching structure. The matching structure is, for example, a relatively smooth adsorption surface. The suction cup structure can be effectively adsorbed on the adsorption surface.

[0099] Of course, in other applications, a non-contact connection can also be established between the limiting portion 320 and the exposed outer peripheral side wall of the inner cylinder 200. For example, in one embodiment, both the limiting portion 320 and the mating portion 220 are magnetic structures. However, a repulsive force is generated between the two magnetic structures. Under the action of the repulsive force, the limiting member 300 and the inner cylinder 200 will not come into contact, but the inner cylinder 200 will be pushed against the side of the mounting channel 110 away from the mounting groove 120, which can also serve the purpose of limiting movement.

[0100] Based on one or more of the above embodiments, the mounting groove 120 further includes a recessed slot 130 on a side away from the mounting channel 110. The position limiting member 300 also includes a plug-in portion. The plug-in portion is provided on the side of the main body 310 facing away from the position limiting member 320 and is plug-connected to the slot 130. On the one hand, the plug-in connection between the plug-in portion and the slot 130 is equivalent to increasing the connection area between the position limiting member 300 and the outer cylinder sleeve 100, which in turn helps to strengthen the connection strength between the position limiting member 300 and the outer cylinder sleeve 100. On the other hand, if the position limiting member 320 applies an abutting force along a first direction to the inner cylinder barrel 200, then the slot 130 can at least form a movement limit for the plug-in portion in a second direction opposite to the first direction. In other words, it can limit the position limiting member 320 from moving away from the inner cylinder barrel 200 along the second direction. This helps to ensure that a sufficiently strong abutment is formed between the position limiting member 320 and the inner cylinder barrel 200.

[0101] Furthermore, the stopper 300 is detachably connected to the outer cylinder liner 100 via the connector 500. That is, once installed, the connector 500 further strengthens the connection between the stopper 300 and the outer cylinder liner 100. This ensures that the stopper 300 will not substantially shift relative to the outer cylinder liner 100, thereby ensuring that the stopper 300 maintains its positional contact with the inner cylinder 200. Furthermore, the connector 500 prevents the stopper 300 from completely detaching from the outer cylinder liner 100.

[0102] Specifically, the limiting member 300 can be a sheet material. The main body 310 of the limiting member 300 is attached to the bottom wall of the mounting groove 120. One end of the limiting member 300 directly forms a latching protrusion, namely the limiting portion 320. The other end of the limiting member 300 extends away from the limiting portion 320 and then bends vertically to form a plug-in portion. The provision of a sheet material can increase the contact area between the limiting member 300 and the outer cylinder sleeve 100 and further contribute to material saving.

[0103] Based on one or more of the above embodiments, in a further solution, the brewing cylinder further includes a fastener 400. The fastener 400 includes a pressing portion 410. The pressing portion 410 is stacked on the side of the main body 310 facing away from the bottom wall of the mounting groove 120, and is detachably connected to the outer cylinder sleeve 100 through a connector 500. The fastener 400 can realize the connection between the limiter 300 and the outer cylinder sleeve 100. On this basis, the main body 310 can be detachably connected to the outer cylinder sleeve 100 through the above-mentioned connector 500. Alternatively, the main body 310 can be directly overlapped on the bottom wall of the mounting groove 120.

[0104] In a specific application, threaded holes can be vertically opened at corresponding locations of the main body 310, the pressing part 410, and the outer cylinder sleeve 100. The connecting member 500 is a threaded member. The connecting member 500 sequentially connects the threaded holes of the main body 310, the pressing part 410, and the outer cylinder sleeve 100.

[0105] Furthermore, the mounting groove 120 is further provided with a slot 130 on a side away from the mounting channel 110. The fastener 400 further includes an extension portion 420. The extension portion 420 is provided on a side of the pressing portion 410 facing away from the mounting channel 110 and is inserted and connected to the slot 130.

[0106] It should be noted that when the fastener 400 also includes an extension 420, the stopper 300 may be provided with an inserting portion. In this case, the extension 420 and the inserting portion are substantially stacked. Both the extension 420 and the inserting portion are inserted into the same slot 130. Alternatively, if two slots 130 are provided, the extension 420 and the inserting portion are inserted into each of the two slots 130.

[0107] When the fastener 400 further includes the extension 420, the position limiting member 300 may not be provided with the plug-in portion. In this case, only the extension 420 and the slot 130 are plugged in, so that the extension 420 can be used to limit the main body 310 along the second direction as described above.

[0108] A gap can be maintained between the pressing portion 410 and the inner cylinder 200. The pressing portion 410 only needs to be sufficiently spaced to press against the main body 310. Alternatively, the pressing portion 410 can extend toward the mounting channel 110 until it abuts against the outer peripheral sidewall of the inner cylinder 200. This helps further secure the inner cylinder 200 with the aid of the fastener 400.

[0109] In one embodiment, the inner cylinder 200 has a first end 201 and a second end 202 that are opposite to each other. An annular step 210 is formed on the outer peripheral sidewall of the inner cylinder 200 near the second end 202. The annular step 210 has a step surface 211 facing the first end 201.

[0110] After being inserted into the installation channel 110, the outer peripheral sidewall of the inner cylinder 200 near the first end 201 is partially exposed in the installation groove 120. The annular step 210 extends out of the installation channel 110. The step surface 211 abuts against the end surface of the outer cylinder sleeve 100.

[0111] In this way, the step surface 211 of the annular step 210 abuts the end surface of the outer cylinder liner 100, leveraging the end surface of the outer cylinder liner 100 to provide a vertical stop for the inner cylinder barrel 200 along one end. Furthermore, through the aforementioned stopper 320, specifically the engagement of the protrusion and groove described above, a vertical stop can be provided for at least the other end of the inner cylinder barrel 200. This overall secure assembly of the inner cylinder barrel 200 relative to the outer cylinder liner 100 is strengthened.

[0112] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A brewing cylinder, characterized in that: include: The outer cylinder sleeve is provided with a mounting channel in the vertical direction, and the end surface of the outer cylinder sleeve is provided with a mounting groove connected to the mounting channel; an inner cylinder, inserted into the installation channel; as well as, The limiting member includes a main body assembled in the installation groove and a limiting portion extending toward the installation channel, wherein the limiting portion is connected to the exposed outer peripheral side wall of the inner cylinder to at least limit the inner cylinder from escaping out of the installation channel.

2. The brewing cylinder according to claim 1, characterized in that: The limiting portion interferes with and abuts against the exposed outer peripheral side wall of the inner cylinder, so as to at least limit the inner cylinder from escaping outward from the installation channel.

3. The brewing cylinder according to claim 1, characterized in that: The outer peripheral side wall of the inner cylinder is provided with a matching portion at least at a portion exposed in the mounting groove, and the matching portion is positionally matched with the limiting portion.

4. The brewing cylinder according to claim 3, characterized in that: One of the limiting portion and the matching portion is a locking protrusion, and the other is a locking groove.

5. The brewing cylinder according to claim 4, characterized in that: The groove is adapted to extend in an arc shape on the outer peripheral side wall of the inner cylinder; and / or, The free end surface of the locking protrusion is configured to be in the shape of a concave arc surface adapted to the shape of the locking groove.

6. The brewing cylinder according to claim 1, characterized in that: The limiting member is detachably connected to the outer cylinder sleeve via a connecting member.

7. The brewing cylinder according to any one of claims 1 to 6, characterized in that: The brewing cylinder further includes a fastener, which includes a pressing portion. The pressing portion is stacked on a side of the main body facing away from the bottom wall of the installation groove and is detachably connected to the outer cylinder sleeve via a connecting piece.

8. The brewing cylinder according to claim 7, characterized in that: The mounting groove is further provided with a slot on a side away from the mounting channel; The fastener further includes an extension portion, which is arranged on a side of the pressing portion facing away from the installation channel and is inserted and connected to the slot.

9. The brewing cylinder according to claim 7, wherein: The pressing portion extends toward the installation passage until it abuts against an outer peripheral side wall of the inner cylinder.

10. The brewing cylinder according to claim 1, wherein: The inner cylinder has a first end and a second end that are opposite to each other, and an annular step is formed on the outer peripheral side wall of the inner cylinder near the second end, and the annular step has a step surface facing the first end; After being inserted into the installation channel, the outer peripheral side wall of the inner cylinder barrel near the first end is partially exposed in the installation groove, the annular step extends out of the installation channel, and the step surface abuts against the end surface of the outer cylinder sleeve.

11. A brewing tank, characterized in that: include: The brewing part includes an outer cylinder sleeve and an inner cylinder barrel, wherein the outer cylinder sleeve is vertically penetrated by a mounting channel, and the inner cylinder barrel is inserted into the mounting channel; a rotating part, used to connect with the driving component, wherein the rotating part is spaced apart and arranged on one radial side of the outer cylinder sleeve, and the axis of the outer cylinder sleeve is parallel to the axis of the brewing part; a connecting portion connected at a gap between the outer cylinder sleeve and the rotating portion; and A limiting member is connected between the connecting portion and the inner cylinder to at least limit the inner cylinder from escaping out of the installation channel.

12. The brewing cylinder according to claim 11, wherein: The limiting member includes a main body provided on the connecting portion and a limiting portion provided on the inner cylinder; The main body and the connecting portion are integrally formed; or After the main body and the connecting portion are separately formed, they are connected and fixed detachably or non-detachably; or The limiting portion is integrally formed with the inner cylinder; or After the limiting portion and the inner cylinder are separately formed, they are connected and fixed in a detachable or non-detachable manner.

13. The brewing cylinder according to claim 11, wherein: One end portion of the outer cylinder sleeve is protruding from the connecting portion, and a notch is provided on a side of the protruding portion facing the connecting portion; After the inner cylinder is inserted into the installation channel, a portion of the inner cylinder is exposed outward from the notch.

14. The brewing cylinder according to claim 13, wherein: The limiting member passes through the notch and is connected to the exposed portion of the inner cylinder to limit the axial movement of the inner cylinder relative to the outer cylinder sleeve.

15. The brewing cylinder according to claim 11, wherein: The brewing cylinder further includes a fastener, which includes a pressing portion. The pressing portion is stacked on a side of the limiting member facing away from the connecting portion and is detachably connected to the outer cylinder sleeve via a connecting member.

16. A brewing tank, characterized in that: include: The brewing part includes an outer cylinder sleeve and an inner cylinder barrel, wherein the outer cylinder sleeve is vertically penetrated by a mounting channel, and the inner cylinder barrel is inserted into the mounting channel; a rotating part, used to connect with the driving component, wherein the rotating part is spaced apart and arranged on one radial side of the outer cylinder sleeve, and the axis of the outer cylinder sleeve is parallel to the axis of the brewing part; a connecting portion connected at a gap between the outer cylinder sleeve and the rotating portion; and A limiting member is fixed to the connecting portion and extends toward the inner cylinder to partially engage the cylinder wall of the inner cylinder to limit the movement of the inner cylinder relative to the outer cylinder sleeve.

17. A brewing device, characterized in that: The invention comprises a brewing cylinder according to any one of claims 1 to 16.

18. A beverage making machine, characterized in that: Comprising the brewing device as claimed in claim 17.

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