Milk foam pipe group, milk box assembly and coffee machine

Abstract

The utility model discloses a milk foam pipe set, a milk box assembly and a coffee machine, belongs to the coffee beverage making technology, and aims to solve the problem that an existing milk foam pipe is not easy to clean. According to the milk foam pipe set, a pipe body is divided into a first pipe body and a second pipe body which are detachably spliced together and define a pipe cavity, and the pipe cavity is opened when the first pipe body and the second pipe body are detached; the joint face of the first pipe body and the second pipe body is sealed through the sealing feature, and air leakage and liquid leakage are avoided. Therefore, when cleaning is needed, the first pipe body and the second pipe body are separated to open the pipe cavity, cleaning is facilitated, particularly, the pipe cavity can be washed with water from different angles, and thorough cleaning is guaranteed. According to the milk box assembly, the milk foam pipe set is applied to the milk box assembly, the box cover is clamped to the opening of the milk box through the first clamping structure, the milk foam pipe set is clamped to the box cover through the second clamping structure, the milk box can be detached independently, milk can be added into the milk box, and the box cover, the milk foam pipe set and the milk box can be detached to be cleaned.

Description

Technical Field

[0001] The utility model belongs to the technical field of coffee beverage production, and particularly relates to a milk foam tube group, a milk box assembly and a coffee machine. Background Art

[0002] Adding milk and milk foam (or called milk bubbles) to pure coffee beverages can obtain milk coffee beverages with different mixed formulas. Milk is usually processed by the milk foam tube of the coffee machine and then added to the pure coffee beverage. However, the existing milk foam tube is of an integral structure and is not easy to clean. Summary of the Utility Model

[0003] The technical problem to be solved and the technical task proposed by the utility model are to overcome the defect that the existing milk foam tube is not easy to clean, and provide a milk foam tube group, a milk box assembly and a coffee machine which are easy to clean.

[0004] To achieve the above object, the milk foam tube group of the utility model includes a tube body with a tube cavity inside. The feature is that: the tube body includes a first tube body and a second tube body which are detachably assembled together to enclose the tube cavity. When the first tube body and the second tube body are separated, the tube cavity is opened. The joint surface of the first tube body and the second tube body is sealed by a sealing feature. Accordingly, when cleaning is required, the tube cavity can be opened by separating the first tube body from the second tube body, which is conducive to cleaning. In particular, the tube cavity can be flushed with water from different angles to ensure thorough cleaning. Moreover, after flushing, the first tube body and the second tube body are assembled together by assembling, and are sealed by the sealing feature, without air leakage or liquid leakage.

[0005] Preferably, the sealing feature is attached to the first tube body or / and the second tube body. Accordingly, when the first tube body and the second tube body are sealed and assembled, it only appears as two parts, which is convenient for assembly. Moreover, during disassembly, assembly and cleaning, it can be avoided that the sealing feature is separated from the first tube body or / and the second tube body and damaged or deformed, thus destroying its sealing performance.

[0006] Preferably, the first tube body or / and the second tube body is made of a hard material, and the sealing feature is formed by secondary injection molding of a soft material on the first tube body or / and the second tube body. Accordingly, it can be ensured that the sealing feature does not deform and its sealing effect is ensured.

[0007] Preferably, the tube cavities opened when the first tube body and the second tube body are separated are respectively located on the first tube body and the second tube body. This is conducive to cleaning the tube cavity.

[0008] Preferably, the sealing feature has continuous sealing ribs distributed around the tube cavity. When the first tube body and the second tube body are assembled together, the sealing ribs can be extruded to generate large deformation to increase the sealing effect.

[0009] Preferably, the tube body includes a steam interface tube, a milk inlet tube, a milk foam outlet tube, and an air inlet tube. The steam interface tube, the milk foam outlet tube, and the air inlet tube are located in the first tube body. The milk inlet tube is composed of the first tube body and the second tube body. The tube cavity is located between the steam interface tube, the milk inlet tube, the milk foam outlet tube, and the air inlet tube. Sealing ribs are distributed on the steam interface tube, the milk foam outlet tube, and the air inlet tube and extend towards the inlet end of the milk inlet tube. The second tube body presses against the sealing ribs. Accordingly, the steam interface tube, the milk foam outlet tube, and the air inlet tube are located in the first tube body and maintain a regular shape, which is beneficial for connecting corresponding other structures. The distribution mode of the sealing ribs increases the sealing effect and is easy to clean.

[0010] Preferably, the first tube body and the second tube body are constrained together by a detachable constraint structure at least at two places to seal the joint surface of the first tube body and the second tube body by a sealing feature. This ensures the reliability of assembling the first tube body and the second tube body together and avoids leakage caused by poor local bonding.

[0011] Preferably, the tube body includes a steam interface tube, a milk inlet tube, a milk foam outlet tube, and an air inlet tube. The steam interface tube, the milk foam outlet tube, and the air inlet tube are located in the first tube body. The milk inlet tube is surrounded by the first tube body and the second tube body. The tube cavity is located between the steam interface tube, the milk inlet tube, the milk foam outlet tube, and the air inlet tube. The second tube body is clamped with the steam interface tube and the milk foam outlet tube through an elastic opening clip. The second tube body and the first tube body are clamped together at the inlet end of the milk inlet tube through a protrusion and a clamping hole respectively arranged on the second tube body and the first tube body. Accordingly, by detaching the elastic opening clip from the steam interface tube and the milk foam outlet tube and detaching the protrusion from the clamping hole, the first tube body and the second tube body can be disassembled, and the operation is convenient. The same is true during assembly.

[0012] Preferably, the steam interface tube and the milk foam outlet tube are coaxially arranged, and the milk inlet tube is perpendicular to the steam interface tube and the milk foam outlet tube. Accordingly, when disassembling the first tube body and the second tube body, the first tube body and the second tube body can be disassembled only by detaching the protrusion from the clamping hole, while the elastic opening clip remains clamped with the steam interface tube and the milk foam outlet tube. Accordingly, in the disassembled state, the first tube body and the second tube body are constrained together and do not disperse, which neither affects cleaning the tube cavity nor is conducive to aligning and assembling the first tube body and the second tube body.

[0013] Preferably, the milk foam tube group includes a milk foam output tube. The milk foam output tube is connected to the milk foam outlet tube through a rotary bayonet structure, and the milk foam outlet tube is in sealing cooperation with the milk foam output tube. Accordingly, the milk foam output tube is also conducive to being disassembled from the tube body for cleaning.

[0014] Preferably, the milk foam outlet pipe is provided with a pin, and the milk foam output pipe has a connected guiding groove and a circumferential groove. The milk foam output pipe is sleeved on the milk foam outlet pipe through the guiding groove or detached from the milk foam outlet pipe. When the milk foam output pipe is sleeved on the milk foam outlet pipe, the pin is located in the circumferential groove. Accordingly, the milk foam outlet pipe and the milk foam output pipe are assembled through the mutually rotating and mating plugging action, and are disassembled through the mutually rotating and mating pulling action, with convenient operation.

[0015] Preferably, the sealing feature extends to the milk foam outlet pipe and forms a sealing sleeve attached to the outside of the milk foam outlet pipe. The sealing sleeve is provided with a sealing ring rib. When the milk foam output pipe is sleeved on the milk foam outlet pipe, the sealing ring rib is extruded against the inner wall of the milk foam output pipe. Accordingly, both the structure of the sealing feature is simplified and the sealing effect is ensured.

[0016] The milk box assembly of the present utility model includes a milk box and a box cover, and is characterized in that:

[0017] The box cover is clamped to the mouth of the milk box through a first clamping structure. The first clamping structure includes a first disassembly operation part for detaching the box cover from the milk box;

[0018] The box cover is clamped to the milk foam pipe group of the present utility model through a second clamping structure. The second clamping structure includes a second disassembly operation part for detaching the milk foam pipe group from the box cover. The milk foam pipe group has a milk inlet, a steam interface, a milk foam outlet, and an air inlet that communicate with the pipe cavity;

[0019] When the milk box, the box cover, and the milk foam pipe group are assembled together, the milk inlet end of the milk foam pipe group is located at the bottom of the milk box, and the steam interface and the air inlet of the milk foam pipe group are exposed outside the milk box and the box cover.

[0020] Accordingly, it is convenient to add milk to the milk box when the milk box is separately disassembled, and the box cover, the milk foam pipe group, and the milk box can also be disassembled from each other for cleaning.

[0021] Preferably, when the milk box, the box cover, and the milk foam pipe group are assembled together, the first disassembly operation part is exposed, and the second disassembly operation part is hidden. Accordingly, the milk box can be disassembled first in sequence, and then the box cover and the milk foam pipe group can be disassembled.

[0022] Preferably, the first clamping structure includes at least two clamping grooves provided on the inner wall of the milk box and flanges provided on the box cover corresponding to the clamping grooves one by one. The flange is located in the corresponding clamping groove to clamp the box cover to the milk box. One of the flanges is provided with an elastic part. The elastic part serves as the first disassembly operation part, and when the elastic part is pressed or pulled, the flange provided on the elastic part is disengaged from the corresponding clamping groove. It is convenient for disassembly and assembly.

[0023] Preferably, the second card-mounted structure includes a card slot provided on the milk frothing tube group and at least a pair of elastic arms and a locking tongue provided on the box cover. The locking tongue is linked to a button. The elastic arms hold the milk frothing tube group, and the locking tongue extends into the card slot by elastic force to card-mount the milk frothing tube group on the box cover. The button serves as the second disassembly operation part, and when the button is pressed, the elastic force is overcome to make the locking tongue disengage from the card slot. This facilitates disassembly and assembly.

[0024] Preferably, the box cover includes an upper cover and a lower cover assembled together. A moving member is provided between the upper cover and the lower cover. The locking tongue is provided on the moving member. The button is constrained by the lower cover and has an inclined surface located between the upper cover and the lower cover. The inclined surface cooperates with the moving member to push the moving member to move when the button is pressed, so that the locking tongue disengages from the card slot. This structure has flexible movement, reliable clamping, and long service life.

[0025] The coffee machine of this method includes a machine body. The machine body is provided with a receiving position. The receiving position has a steam outlet and an air supply port. The milk box assembly of the present invention is detachably arranged in the receiving position. The steam outlet is docked with the steam interface of the milk box assembly, and the air supply port is docked with the air inlet of the milk box assembly. Accordingly, it is convenient to install the milk box assembly onto the machine body of the coffee machine and remove it from the machine body.

[0026] Preferably, the steam outlet is located on the rear wall of the receiving position, the air supply port is located on the top wall of the receiving position, the steam interface of the milk box assembly faces backward, and the air inlet of the milk box assembly is located on the top surface of the box cover and faces upward. Accordingly, when the milk box assembly is arranged on the machine body, it is beneficial for the steam outlet to be docked with the steam interface of the milk box assembly and the air supply port to be docked with the air inlet of the milk box assembly.

[0027] Preferably, the receiving position is provided with a positioning member, and the milk box assembly is provided with a positioning portion. When the milk box assembly is arranged in the receiving position, the positioning member abuts against the positioning portion to constrain the milk box assembly in the receiving position. Accordingly, it is possible to prevent the milk box assembly from shifting, resulting in poor docking between the steam outlet and the steam interface of the milk box assembly and poor docking between the air supply port and the air inlet of the milk box assembly, causing leakage.

[0028] Preferably, the machine body is configured with a knob and an air flow valve and a potentiometer linked to the knob. The air flow valve is connected to the air supply port, and the knob can be selectively positioned at different function gears. Accordingly, by rotating the knob to place the knob at different function gears, the coffee machine can make specific varieties of coffee beverages, and the air flow is adjusted to make milk products for adding to the specific varieties of coffee beverages in the milk box assembly.

[0029] Preferably, the receiving position and the milk box assembly are provided with mutually cooperating tracks, and the tracks guide the milk box assembly to be arranged in the receiving position or remove the milk box assembly from the receiving position. Accordingly, it is convenient to install the milk box onto the machine body and remove it from the machine body.

[0030] The utility model first divides the pipe body into a first pipe body and a second pipe body which are detachably assembled together to enclose a pipe cavity. When the first pipe body and the second pipe body are separated, the pipe cavity is opened, and the joint surface of the first pipe body and the second pipe body is sealed by a sealing feature. Accordingly, when cleaning is required, the pipe cavity can be opened by separating the first pipe body from the second pipe body, which is conducive to cleaning. In particular, the pipe cavity can be flushed with water from different angles to ensure thorough cleaning. Moreover, after flushing, the first pipe body and the second pipe body are assembled together by assembling, and are sealed by the sealing feature, without air leakage or liquid leakage.

[0031] The utility model also applies the milk foam pipe group to the milk box assembly. The box cover is clamped to the mouth of the milk box through a first clamping structure, and the box cover is clamped to the milk foam pipe group of the utility model through a second clamping structure, which is conducive to separately disassembling the milk box to add milk to the milk box and disassembling the box cover, the milk foam pipe group and the milk box from each other for cleaning.

[0032] The utility model further detachably arranges the milk box assembly in the accommodating position of the coffee machine main body, which is convenient for installing the milk box assembly on the body of the coffee machine and removing it from the body. Description of the Drawings

[0033] Figure 1 is a partial schematic view of the coffee machine of the utility model;

[0034] Figure 2 is Figure 1 a schematic view of removing the milk box assembly in

[0035] Figure 3 is Figure 2 a schematic view of another perspective of the structure shown in

[0036] Figure 4 is a schematic view of the corresponding relationship between the milk box assembly of the utility model and the steam outlet and air supply port of the body;

[0037] Figure 5 is an exploded schematic view of the structure of the milk box assembly of the utility model;

[0038] Figure 6 is Figure 5 a schematic view of another perspective of the structure shown in

[0039] Figure 7 is an exploded schematic view of the structure of the milk foam pipe group of the utility model;

[0040] Figure 8 is Figure 7 a schematic view of another perspective of the structure shown in

[0041] Figure 9 is a schematic view of the sealing feature of the utility model being peeled off from the first pipe body;

[0042] Figure 10 is Figure 9 a schematic view of another perspective of the structure shown;

[0043] Figure 11 is a schematic exploded view of the lid of the present utility model;

[0044] Figure 12 is Figure 11 a schematic view of another perspective of the structure shown;

[0045] Figure 13 is a schematic view of the assembly relationship between the button and the moving part of the present utility model;

[0046] Figure 14 is Figure 13 a schematic view of another perspective of the structure shown;

[0047] Figure 15 is a schematic front projection view of the milk foam tube group of the present utility model assembled with the lid;

[0048] Figure 16 is Figure 15 an enlarged sectional view taken along line A-A of ;

[0049] Figure 17 is Figure 15 an enlarged sectional view taken along line B-B of ;

[0050] Figure 18 is a schematic sectional view of the milk box assembly of the present utility model;

[0051] Description of reference numerals in the figure:

[0052] 100 milk foam tube group,

[0053] 110 tube body, 111 tube cavity, 112 steam interface tube, 1121 steam interface, 113 milk inlet tube, 1131 milk inlet, 114 milk foam outlet tube, 1141 milk foam outlet, 115 air inlet tube, 1151 air inlet, 116 card slot, 117 second positioning part,

[0054] 120 first tube body, 121 protrusion, 122 pin,

[0055] 130 second tube body, 131 elastic opening clip, 132 card hole,

[0056] 140 sealing feature, 141 sealing rib, 142 sealing sleeve, 143 sealing ring rib,

[0057] 150 milk foam output tube, 151 guiding groove, 152 circumferential groove;

[0058] 200 milk box assembly,

[0059] 210 milk box, 211 track groove,

[0060] 220 box cover,

[0061] 221 upper cover, 2211 first positioning part,

[0062] 222 lower cover, 2221 first disassembly operation part, 2222 elastic arm, 2223 flange, 2224 through hole,

[0063] 223 moving part, 2231 locking tongue, 2232 first spring,

[0064] 224 second disassembly operation part, 2241 inclined surface, 2242 hook, 2243 second spring;

[0065] 225 guiding part;

[0066] 300 coffee machine,

[0067] 310 fuselage, 311 accommodating position, 312 protrusion,

[0068] 320 steam outlet,

[0069] 330 air supply port,

[0070] 341 first positioning part, 342 second positioning part,

[0071] 350 knob, 351 gear,

[0072] 360 air flow valve,

[0073] 370 potentiometer. Detailed implementation mode

[0074] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0075] The terms "including" and "having" in the description and claims of the present utility model and any variations thereof are intended to cover non-exclusive inclusion. For example, a method or product including a series of technical features does not necessarily have to be limited to those technical features clearly listed, but may also include other technical features that can be included in the method or product and are not clearly listed.

[0076] In the description of the present utility model, it should be understood that the technical features defined by terms such as "first", "second", etc. with a sequential concept are only for clearly describing the defined technical features so that the defined technical features can be clearly distinguished from other technical features, rather than being named like this during actual implementation. Therefore, it should not be construed as a limitation to the present utility model.

[0077] The present utility model will be introduced in detail below in conjunction with specific embodiments and the accompanying drawings.

[0078] As Figures 1-3 shown is a partial schematic diagram of a coffee machine. The body 310 is shown in this figure. The body is provided with a receiving position 311. The receiving position 311 has a steam outlet 320 and an air supply port 330. A milk box assembly 200 is detachably arranged in the receiving position 311. The steam outlet 320 is docked with the steam interface 1121 of the milk box assembly, and the air supply port 330 is docked with the air inlet 1151 of the milk box assembly.

[0079] In particular, the steam outlet 320 is located on the rear wall of the receiving position 311, the air supply port 330 is located on the top wall of the receiving position 311, the steam interface 1121 of the milk box assembly faces backward, and the air inlet 1151 of the milk box assembly is located on the top surface of the box cover and faces upward. The receiving position 311 and the milk box assembly 200 are provided with mutually cooperating tracks. The track includes a track groove 211 provided on the bottom surface of the milk box and a protrusion 312 provided on the bottom surface of the receiving position 311. The protrusion 312 guides the track groove 211 to place the milk box assembly in the receiving position or remove the milk box assembly from the receiving position. When the milk box assembly is placed in the receiving position, the steam outlet 320 is docked with the steam interface 1121 of the milk box assembly, and the air supply port 330 is docked with the air inlet 1151 of the milk box assembly. When the milk box assembly is removed from the receiving position, the steam outlet is disengaged from the steam interface of the milk box assembly, and the air supply port is disengaged from the air inlet of the milk box assembly.

[0080] The receiving position 311 is provided with a downward first positioning member 341 and a second positioning member 342. The top surface of the box cover 220 of the milk box assembly is provided with a groove-shaped first positioning portion 2211. The steam inlet pipe 112 of the milk box assembly is provided with an annular groove as the second positioning portion 342. When the milk box assembly is placed in the receiving position, the first positioning member 341 abuts against the first positioning portion 2211, and the second positioning member 242 abuts against the second positioning portion 342, thereby constraining the milk box assembly in the receiving position. When the milk box is taken out, the first positioning member and the second positioning member can be retracted by the support of springs. Therefore, when taking out the milk box assembly, overcome the elastic force of the corresponding spring, and be able to easily remove the milk box assembly from the body by getting rid of the constraint of the positioning member. The same is true when loading.

[0081] Referring to Figure 4, the fuselage is equipped with a knob 350, an air flow valve 360 linked to the knob, and a potentiometer 370. The air flow valve 360 is connected to the air supply port 330, and the knob 350 can be selectively positioned at different functional positions. The linkage is achieved through a pair of meshing gears 351. When the knob is rotated to a specific functional position, the two gears rotate in opposite directions, driving the air flow valve to change its air flow and the potentiometer to change its potential, thus realizing the corresponding functions.

[0082] As Figures 5-6 shown, the milk box assembly 200 therein includes a milk box 210, a box cover 220, and a milk frothing tube set 100.

[0083] The box cover 220 is snap-fitted to the mouth of the milk box 210 through a first snap-fitting structure, and the first snap-fitting structure includes a first disassembly operation part 2221 for detaching the box cover from the milk box.

[0084] The first snap-fitting structure includes three card slots provided on the inner wall of the milk box and flanges 2223 provided on the box cover corresponding to the card slots one by one. Among them, two card slots are located on one side wall, and the other card slot is located on the other opposite inner wall. The flange is located in the corresponding card slot to snap-fit the box cover to the milk box. One of the flanges is provided on an elastic part, and the elastic part serves as the first disassembly operation part 2221 and when the elastic part is pressed, the flange provided on the elastic part is disengaged from the corresponding card slot. After pressing the elastic part to disengage the flange provided on the elastic part from the corresponding card slot, then turn the milk box 210 and the box cover 220 relative to each other, getting rid of the obstruction between the milk box and the box cover, and the milk box and the box cover can be disassembled. For the elastic part therein, the operation mode of pressing it can be changed to a pulling operation mode.

[0085] The box cover 220 is snap-fitted to the milk frothing tube set through a second snap-fitting structure, and the second snap-fitting structure includes a second disassembly operation part 224 for detaching the milk frothing tube set from the box cover.

[0086] As Figures 13-17The second clamping structure includes a clamping slot 116 provided on the milk foam tube set 100 and a pair of elastic arms 2222 and a locking tongue 2231 provided on the box cover 220. The locking tongue 2231 is linked with a button. The elastic arm 2222 holds the milk foam tube set 100, and the locking tongue 2231 extends into the clamping slot 116 by elastic force to clamp the milk foam tube set to the box cover 220. The button serves as a second disassembly operation part 224 and overcomes the elastic force when the button is pressed to make the locking tongue escape from the clamping slot. In particular, the box cover includes an upper cover 221 and a lower cover 222 assembled together, and a moving member 223 is provided between the upper cover and the lower cover. The moving member 223 is guided to move laterally by a guide member 225 fixed to the lower cover 222. The lock tongue 2231 is arranged on the moving member 2223, and the button is constrained by the through hole 2224 of the lower cover through the hook 2242. The upper end of the button extends between the upper cover and the lower cover and is provided with an inclined surface 2241. The inclined surface 2241 cooperates with the moving member 223 to push the moving member to move horizontally when the button is pressed so that the lock tongue escapes from the slot. Among them, the moving member 223 is acted on with a first spring 2232, and the button is acted on with a second spring 2243, which is used to cause the moving member and the button to reset when the button is released.

[0087] In particular, when the milk box 210, the box cover 220 and the milk froth tube set 100 are assembled together, the first disassembly operation part 2221 is exposed, and the second disassembly operation part 224 is hidden. Accordingly, only by disassembling the milk box first can the box cover and the milk froth tube set be disassembled, thereby avoiding misoperation.

[0088] like Figure 18 As shown, when the milk box, the box cover and the milk froth tube set are assembled together, the milk inlet end of the milk froth tube set 100 is located at the bottom of the milk box, and the steam interface 1121 and the air inlet 1151 of the milk froth tube set are exposed on the milk box and the box cover for docking with corresponding structures.

[0089] like Figures 5-10 As shown, the milk froth tube set 100 includes a tube body 110, and the tube body 110 has a tube cavity 111 therein. The tube body includes a first tube body 120 and a second tube body 130 that are detachably assembled together to surround the tube cavity. When the first tube body and the second tube body are detached, the tube cavity is opened for cleaning, and the joint surface of the first tube body and the second tube body is sealed by a sealing feature 140.

[0090] like Figures 9-10 As shown, the sealing feature 140 is attached to the first tube 120. Specifically, the first tube and the second tube are made of hard materials such as engineering plastics, and the sealing feature is secondary injection molded on the first tube by soft materials such as silicone. In other embodiments, the sealing feature is secondary molded on the second tube alone or the sealing feature is secondary molded on both the first tube and the second tube. Moreover, when the materials of the first tube and the second tube have sealing properties, the sealing feature can be directly made on the first tube or / and the second tube.

[0091] Among them, when the first tube body and the second tube body are separated, the open lumen is respectively located in the first tube body and the second tube body. Taking the cross-sectional contour of the lumen as a circle as an example, the first tube body and the second tube body respectively have a semi-circle.

[0092] The sealing feature 140 has continuous sealing ribs 141 distributed around the lumen. Since the lumen is for fluid to flow through, the so-called "around the lumen" does not mean surrounding and closing the lumen to block the fluid flow, but is distributed on the joint surface of the first tube body and the second tube body to guide the fluid into and out of the lumen instead of leaking from the joint surface.

[0093] The milk frothing tube group 100 has a milk inlet 1131, a steam interface 1121, a milk froth outlet 1141, and an air inlet 1151 that communicate with the lumen 111. Specifically, the tube body includes a steam interface tube, a milk inlet tube, a milk froth outlet tube, and an air inlet tube. The milk inlet 1131 is located on the milk inlet tube 113, the steam interface 1121 is located on the steam interface tube 112, the milk froth outlet 1141 is located on the milk froth outlet tube 114, and the air inlet 1151 is located on the air inlet tube 115. And, the steam interface tube, the milk froth outlet tube, and the air inlet tube are located in the first tube body 120, and the milk inlet tube is composed of the first tube body and the second tube body. As Figure 7 , Figure 9 and Figure 18 shown, the lumen 111 is located between the steam interface tube, the milk inlet tube, the milk froth outlet tube, and the air inlet tube. The sealing ribs 141 are distributed on the steam interface tube, the milk froth outlet tube, and the air inlet tube and extend towards the inlet end of the milk inlet tube. The second tube body presses the sealing ribs. In the illustrated structure, in order to highlight the sealing ribs, the sealing ribs are represented by dashed lines.

[0094] Among them, the first tube body 120 and the second tube body 130 are constrained together by a separable constraint structure at least at two places to seal the joint surface of the first tube body and the second tube body by the sealing feature. Specifically, in view of the coaxial arrangement of the steam interface tube and the milk froth outlet tube, the milk inlet tube is perpendicular to the steam interface tube and the milk froth outlet tube. The second tube body 130 is clamped with the steam interface tube 112 and the milk froth outlet tube 114 by an elastic opening clip 131. The second tube body and the first tube body are as Figure 17 shown clamped together at the inlet end of the milk inlet tube by a protrusion 121 and a clamping hole 132 respectively provided on the second tube body and the first tube body.

[0095] The milk foam tube set 100 includes a milk foam output tube 150. The milk foam output tube 150 is connected to the milk foam outlet tube 115 through a rotary bayonet structure, and the milk foam outlet tube is in sealing fit with the milk foam output tube. In particular, the milk foam outlet tube 115 is provided with a pin 122, the milk foam output tube 150 has a connected guiding groove 151 and a circumferential groove 152. The milk foam output tube is sleeved on the milk foam outlet tube through the guiding groove or removed from the milk foam outlet tube. When the milk foam output tube is sleeved on the milk foam outlet tube, the pin is located in the circumferential groove. The sealing feature 140 extends to the milk foam outlet tube 114 and forms a sealing sleeve 142 attached to the outside of the milk foam outlet tube. The sealing sleeve is provided with a sealing ring rib 143. When the milk foam output tube is sleeved on the milk foam outlet tube, the sealing ring rib is squeezed against the inner wall of the milk foam output tube to achieve sealing.

[0096] According to the above structure, the milk box assembly can be installed on the body or removed from the body as needed. The milk box assembly can be disassembled into a milk box, a box cover and a milk foam tube set. The milk foam tube set can be further disassembled to open the lumen for flushing.

[0097] In the present utility model, the milk foam outlet and the milk foam outlet tube are only names for the structure and do not necessarily mean that milk foam is output. When the working state is different, different forms of milk, or liquid milk, or milk foam can be output. Similarly, the steam inlet and the steam inlet tube are also only names for the structure and do not necessarily mean that steam is input. When the working state is different, steam can be input, or a mixture of steam and hot water can also be input.

Claims

1. A milk froth tube set, comprising a tube body (110), wherein the tube body has a tube cavity (111), wherein the tube body has: The tube body comprises a first tube body (120) and a second tube body (130) which are detachably assembled together and surround the tube cavity. The tube cavity is opened when the first tube body and the second tube body are detached, and the joint surface of the first tube body and the second tube body is sealed by a sealing feature (140).

2. The milk froth tube set according to claim 1, characterized in that: The sealing feature (140) is attached to the first tube and / or the second tube.

3. The milk froth tube set according to claim 2, characterized in that: The first tube body and / or the second tube body are made of hard material, and the sealing feature is secondary injection molded on the first tube body and / or the second tube body by soft material.

4. The milk froth tube set according to claim 1, characterized in that: When the first tube body and the second tube body are separated, the opened tube cavity is located in the first tube body and the second tube body.

5. The milk foam tube set according to any one of claims 1 to 4, characterized in that: The sealing feature (140) has a continuous sealing rib (141) distributed around the lumen.

6. The milk froth tube set according to claim 5, characterized in that: The tube body (110) comprises a steam interface tube (112), a milk inlet tube (113), a milk foam outlet tube (114) and an air inlet tube (115); the steam interface tube, the milk foam outlet tube and the air inlet tube are located in the first tube body (120); the milk inlet tube is composed of the first tube body and the second tube body; the tube cavity is located between the steam interface tube, the milk inlet tube, the milk foam outlet tube and the air inlet tube; sealing ribs (141) are distributed on the steam interface tube, the milk foam outlet tube and the air inlet tube and extend toward the inlet end of the milk inlet tube; the second tube body presses the sealing ribs.

7. The milk foam tube set according to any one of claims 1 to 4, characterized in that: The first tube body and the second tube body are restrained together at least at two locations by a detachable restraining structure so that the joint surfaces of the first tube body and the second tube body are sealed by the sealing feature.

8. The milk froth tube set according to claim 7, characterized in that: The tube body comprises a steam interface tube (112), a milk inlet tube (113), a milk foam outlet tube (114) and an air inlet tube (115); the steam interface tube, the milk foam outlet tube and the air inlet tube are located in the first tube body; the milk inlet tube is surrounded by the first tube body and the second tube body; the tube cavity is located between the steam interface tube, the milk inlet tube, the milk foam outlet tube and the air inlet tube; the second tube body is clamped with the steam interface tube (112) and the milk foam outlet tube (114) through an elastic opening clamp (131); the second tube body and the first tube body are clamped together at the inlet end of the milk inlet tube through protrusions (121) and clamping holes (132) respectively arranged on the second tube body and the first tube body.

9. The milk froth tube set according to claim 8, characterized in that: The steam interface pipe (112) and the milk froth outlet pipe (114) are coaxially arranged, and the milk inlet pipe (113) is perpendicularly arranged to the steam interface pipe and the milk froth outlet pipe.

10. The milk froth tube set according to claim 1, characterized in that: The milk froth tube set comprises a milk froth output tube (150), the milk froth output tube (150) is connected to the milk froth outlet tube (114) via a rotating bayonet structure, and the milk froth outlet tube is sealed and matched with the milk froth output tube.

11. The milk froth tube set according to claim 10, characterized in that: The milk froth outlet pipe (114) is provided with a pin (122), and the milk froth outlet pipe (150) has a connected guide groove (151) and a circumferential groove (152). The milk froth outlet pipe is sleeved on the milk froth outlet pipe or removed from the milk froth outlet pipe through the guide groove. When the milk froth outlet pipe is sleeved on the milk froth outlet pipe, the pin is located in the circumferential groove.

12. The milk froth tube set according to claim 10 or 11, characterized in that: The sealing feature (140) extends to the milk froth outlet tube (114) and forms a sealing sleeve (142) attached to the outside of the milk froth outlet tube. The sealing sleeve is provided with a sealing ring rib (143). When the milk froth outlet tube (150) is sleeved on the milk froth outlet tube (114), the sealing ring rib is pressed against the inner wall of the milk froth outlet tube.

13. A milk box assembly, comprising a milk box (210) and a box cover (220), characterized in that: The box cover (220) is clamped on the mouth of the milk box (210) via a first clamping structure, and the first clamping structure comprises a first disassembly operation part (2221) for disassembling the box cover from the milk box; The box cover (220) is clamped with the milk foam tube set (100) according to any one of claims 1 to 12 via a second clamping structure, the second clamping structure comprising a second disassembly operation portion (224) for removing the milk foam tube set from the box cover, the milk foam tube set having a milk inlet, a steam interface, a milk foam outlet and an air inlet connected to the tube cavity; When the milk box (210), the box cover (220) and the milk frothing tube set (100) are assembled together, the milk inlet end of the milk frothing tube set is located at the bottom of the milk box, and the steam interface and the air inlet of the milk frothing tube set are exposed to the milk box and the box cover.

14. The milk box assembly according to claim 13, characterized in that: When the milk box (210), the box cover (220) and the milk froth tube set (100) are assembled together, the first disassembly operation portion is exposed and the second disassembly operation portion is hidden.

15. The milk box assembly according to claim 13 or 14, characterized in that: The first clamping structure comprises at least two clamping grooves arranged on the inner wall of the milk box and flanges (2223) arranged on the box cover and corresponding to the clamping grooves one by one. The flanges are located in the corresponding clamping grooves to clamp the box cover to the milk box. One of the flanges is arranged on the elastic part, and the elastic part serves as the first disassembly operation part (2221). When the elastic part is pressed or pulled, the flange arranged on the elastic part is disengaged from the corresponding clamping groove.

16. The milk box assembly according to claim 13 or 14, characterized in that: The second clamping structure comprises a clamping slot (116) provided on the milk foam tube set (100) and at least one pair of elastic arms (2222) and a locking tongue (2231) provided on the box cover; the locking tongue (2231) is linked to a button; the elastic arm (2222) holds the milk foam tube set (100); the locking tongue (2231) extends into the clamping slot (116) by elastic force to clamp the milk foam tube set on the box cover; the button serves as a second disassembly operation portion (224); and when the button is pressed, the locking tongue is disengaged from the clamping slot by overcoming the elastic force.

17. The milk box assembly according to claim 16, characterized in that: The box cover comprises an upper cover (221) and a lower cover (222) which are assembled together, a moving piece (223) is arranged between the upper cover and the lower cover, a locking tongue (2231) is arranged on the moving piece, a button is constrained by the lower cover and is provided with an inclined surface (2241) located between the upper cover and the lower cover, and the inclined surface (2241) cooperates with the moving piece (223) so that when the button is pressed, the inclined surface pushes the moving piece to move so that the locking tongue escapes from the card slot.

18. A coffee machine, comprising a body (310), the body being provided with a receiving position (311), the receiving position having a steam outlet (320) and an air supply port (330), wherein: The milk box assembly (200) according to any one of claims 13 to 17 can be detachably placed in the accommodating position, the steam outlet (320) is connected to the steam interface (1121) of the milk box assembly, and the air supply port (330) is connected to the air inlet (1151) of the milk box assembly.

19. The coffee machine according to claim 18, characterized in that: The steam outlet (320) is located on the rear wall of the accommodating position (311), the air supply port (330) is located on the top wall of the accommodating position (311), the steam interface (1121) of the milk box assembly faces rearward, and the air inlet (1151) of the milk box assembly is located on the top surface of the box cover and faces upward.

20. The coffee machine according to claim 18, characterized in that: The accommodating position (311) is provided with a positioning piece, and the milk box assembly is provided with a positioning portion. When the milk box assembly is placed in the accommodating position, the positioning piece and the positioning portion abut against each other to constrain the milk box assembly in the accommodating position.

21. The coffee machine according to claim 18, characterized in that: The body is provided with a knob (350) and an air flow valve (360) and a potentiometer (370) linked to the knob. The air flow valve (360) is connected to the air supply port (330). The knob (350) can be selectively positioned at different functional gears.

22. The coffee machine according to any one of claims 18 to 21, characterized in that: The accommodating position (311) and the milk box assembly (200) are provided with tracks that cooperate with each other, and the tracks guide the milk box assembly to be placed in the accommodating position or to be removed from the accommodating position.

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