Beverage machine and brewing device

Abstract

The utility model discloses a beverage machine and a brewing device, the beverage machine comprises: a brewing device, which comprises a brewing cylinder, an upper piston and a lower piston, the upper piston and the lower piston are respectively jointed with two ends of the brewing cylinder to form a brewing chamber; the water supply pipeline is selectively communicated with the brewing chamber; a beverage outlet for outputting liquid generated from the brewing chamber; the brewing device comprises a liquid outlet pipeline and a straight pipeline which are respectively communicated with the brewing chamber, the beverage machine further comprises a bypass pipeline and a beverage conveying pipeline, the bypass pipeline is connected with the beverage outlet and the straight pipeline, and the beverage conveying pipeline is connected to the beverage outlet and the liquid outlet pipeline; the liquid outlet pipeline and the straight pipeline are respectively configured to allow blocked communication and unblocked communication from the brewing chamber to the beverage outlet; the beverage brewing device further comprises a control assembly, and the control assembly controllably connects or disconnects the bypass pipeline and the beverage outlet so that liquid in the brewing chamber can be conveyed to the beverage outlet through the straight-through pipeline or the liquid outlet pipeline. The beverage machine can selectively output beverages with different flavors, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of beverage preparation, in particular to a beverage machine and brewing device. BACKGROUND

[0002] In modern beverage making equipment, especially in automatic coffee machines, a brewer is usually used to make beverages such as coffee. The brewer usually includes an upper piston, a lower piston, and a brewing cylinder, which together form a closed brewing chamber for filling beverage particles such as coffee powder. During beverage making, hot water enters the brewing chamber through a water supply pipeline, and after high-temperature and high-pressure extraction, the beverage flows out through a liquid outlet pipeline and is delivered to a beverage outlet. This design can effectively extract the flavor and oil of coffee, thereby producing high-quality coffee.

[0003] However, as users' demand for different taste beverages increases, the design of the traditional brewer, which only supports the production of one flavor of coffee, cannot meet users' demand for diversified beverages. SUMMARY

[0004] The utility model aims at providing a beverage machine that can output different flavored beverages.

[0005] Another purpose of the utility model is to provide a brewing device that can output different flavored beverages.

[0006] To achieve one of the above purposes, the utility model provides a beverage machine, which includes:

[0007] A brewer includes a brewing cylinder, an upper piston, and a lower piston, wherein the upper piston and the lower piston are respectively connected to both ends of the brewing cylinder to form a brewing chamber;

[0008] A water supply pipeline selectively communicates with the brewing chamber to supply water to the brewing chamber;

[0009] A beverage outlet is used to output liquid produced from the brewing chamber;

[0010] The brewer includes a liquid outlet pipeline and a straight-through pipeline that respectively communicate with the brewing chamber, wherein the liquid outlet pipeline and the straight-through pipeline are both arranged in the upper piston, the beverage machine further includes a bypass pipeline and a beverage delivery pipeline, the bypass pipeline connects the beverage outlet and the straight-through pipeline, and the beverage delivery pipeline connects the beverage outlet and the liquid outlet pipeline; the liquid outlet pipeline is configured to allow blocked communication from the brewing chamber to the beverage outlet, so that the liquid produced in the brewing chamber is a first beverage; the straight-through pipeline is configured to allow unblocked communication from the brewing chamber to the beverage outlet, so that the liquid produced in the brewing chamber is a second beverage, and the first beverage is different from the second beverage;

[0011] The control assembly is in controllable communication with the bypass pipeline and the beverage outlet to deliver liquid from the brewing chamber to the beverage outlet through the straight-through pipeline, and is in controllable disconnection with the bypass pipeline and the beverage outlet to deliver liquid from the brewing chamber to the beverage outlet through the liquid outlet pipeline.

[0012] Compared with the prior art, the utility model discloses the beneficial effect lies in: through design straight-through pipeline and liquid outlet pipeline two output paths, support user according to demand to choose to make different flavor beverage, provide different mouthfeel selection, improve user experience.

[0013] As a further improvement of an embodiment of the utility model, the beverage machine further comprises a cleaning pipeline connecting the bypass pipeline and the water supply pipeline; the beverage machine has a cleaning mode, in the cleaning mode, the control assembly is in communication with the water supply pipeline and the cleaning pipeline, and is in disconnection with the bypass pipeline and the beverage outlet, so as to supply water to the brewing chamber through the straight-through pipeline, thereby cleaning the brewing chamber.

[0014] When the control assembly is in communication with the water supply pipeline and the cleaning pipeline, water can enter the brewing chamber through the straight-through pipeline, realizing the cleaning operation on the upper piston upper filter screen, and further ensuring the sanitary performance of the beverage machine.

[0015] As a further improvement of an embodiment of the utility model, the control assembly comprises a first shut-off valve and a second shut-off valve, the first shut-off valve is arranged on the cleaning pipeline, and the second shut-off valve is arranged on the bypass pipeline; the beverage machine has a first beverage output mode and a second beverage output mode, in the first beverage output mode, the first shut-off valve and the second shut-off valve are both closed, and liquid from the brewing chamber is delivered to the beverage outlet through the liquid outlet pipeline; in the second beverage output mode, the first shut-off valve is closed, the second shut-off valve is opened, and liquid from the brewing chamber is delivered to the beverage outlet through the straight-through pipeline.

[0016] As a further improvement of an embodiment of the utility model, the control assembly comprises a third shut-off valve and a three-way valve, the third shut-off valve is arranged on the cleaning pipeline, and the three-way valve is arranged on the bypass pipeline and connected with the beverage outlet, the straight-through pipeline and the cleaning pipeline respectively; the beverage machine has a first beverage output mode and a second beverage output mode, in the first beverage output mode, the third shut-off valve is closed, the three-way valve is in disconnection with the bypass pipeline and the beverage outlet, and liquid from the brewing chamber is delivered to the beverage outlet through the liquid outlet pipeline; in the second beverage output mode, the three-way valve is in communication with the bypass pipeline and the beverage outlet, and liquid from the brewing chamber is delivered to the beverage outlet through the straight-through pipeline.

[0017] As a further improvement of an embodiment of the present utility model, the lower piston is connected with a water inlet pipeline, the water inlet pipeline is connected with a pressure relief pipeline; in the cleaning mode, water supplied to the brewing chamber by the cleaning pipeline is discharged from the pressure relief pipeline.

[0018] As a further improvement of an embodiment of the present utility model, the lower piston is connected with a water inlet pipeline, the water inlet pipeline is connected with a pressure relief pipeline, the beverage machine further has a cleaning mode, in the cleaning mode, the control assembly connects the water supply pipeline and the bypass pipeline, and disconnects the bypass pipeline and the beverage delivery pipeline, water supplied to the brewing chamber by the straight-through pipeline is discharged from the pressure relief pipeline.

[0019] As a further improvement of an embodiment of the present utility model, it further comprises an emptying pump, the emptying pump is connected to the beverage delivery pipeline through an emptying pipeline, and the bypass pipeline is connected to the beverage delivery pipeline.

[0020] As a further improvement of an embodiment of the present utility model, the beverage machine further has an emptying mode, in the emptying mode, the control assembly disconnects the cleaning pipeline and the bypass pipeline, and connects the bypass pipeline and the beverage delivery pipeline, and the emptying pump discharges residual liquid in the bypass pipeline, the straight-through pipeline and the beverage delivery pipeline through the emptying pipeline.

[0021] As a further improvement of an embodiment of the present utility model, a control valve is connected between the water supply pipeline and the lower piston, in the emptying mode, the control valve connects the water supply pipeline and the cleaning pipeline, and the emptying pump discharges residual liquid in the water supply pipeline and the cleaning pipeline through the emptying pipeline.

[0022] The utility model also provides a brewing device, comprising:

[0023] A support;

[0024] A brewing device, comprising a brewing cylinder, an upper piston and a lower piston, the brewing cylinder is arranged on the support, the upper piston and the lower piston are respectively connected with two ends of the brewing cylinder to form a brewing chamber, and the brewing chamber is used for generating liquid flowing out of a beverage outlet of the beverage machine;

[0025] The upper piston is provided with a liquid outlet pipeline and a straight-through pipeline, the lower piston is connected with a water inlet pipeline, and the liquid outlet pipeline and the straight-through pipeline are used for connecting the beverage outlet; the liquid outlet pipeline is configured as a resistance pipeline, when the pressure in the brewing chamber reaches a preset pressure, the liquid outlet pipeline allows the connection between the brewing chamber and the beverage outlet; the straight-through pipeline is configured as a non-resistance pipeline;

[0026] The straight-through pipeline and the liquid outlet pipeline output the liquid in the brewing chamber alternatively; when the liquid is output through the straight-through pipeline, the pressure in the brewing chamber is less than the preset pressure; when the liquid is output through the liquid outlet pipeline, the pressure in the brewing chamber reaches the preset pressure.

[0027] As a further improvement of an embodiment of the utility model, when the straight-through pipeline is disconnected from the beverage outlet, the liquid in the brewing chamber is output through the liquid outlet pipeline; when the straight-through pipeline is connected to the beverage outlet, the liquid in the brewing chamber is output through the straight-through pipeline.

[0028] As a further improvement of an embodiment of the utility model, the liquid outlet pipeline is arranged at the center of the upper piston, and the straight-through pipeline is offset relative to the liquid outlet pipeline; the upper piston comprises a piston cylinder, and the liquid outlet pipeline and the straight-through pipeline are arranged in the piston cylinder; the straight-through pipeline is connected to a pipeline support plate, the pipeline support plate is engaged with the cylinder wall of the piston cylinder, the liquid outlet pipeline penetrates through the pipeline support plate, the edge of the pipeline support plate extends out a lug plate along the axial direction of the piston cylinder, the lug plate is provided with a cantilever clamping block, and the cylinder wall of the piston cylinder is provided with a first clamping groove, and the cantilever clamping block is inserted into the first clamping groove.

[0029] As a further improvement of an embodiment of the utility model, the straight-through pipeline is configured as a non-blocking bidirectional communication pipeline, the water inlet pipeline is supplied with water through a water supply pipeline of the beverage machine, and the straight-through pipeline is also used for connecting the water supply pipeline; when the straight-through pipeline is disconnected from the beverage outlet, the water supply pipeline supplies water to the brewing chamber through the straight-through pipeline, so that the brewing chamber is cleaned.

[0030] As a further improvement of an embodiment of the utility model, the liquid outlet pipeline is also used for connecting a drainage pipeline of the beverage machine, the drainage pipeline is connected to a drainage pump, the water inlet pipeline is supplied with water through a water supply pipeline, and the straight-through pipeline is also used for connecting the water supply pipeline; when the straight-through pipeline is connected to the beverage outlet and the drainage pump is started, the liquid between the straight-through pipeline and the beverage outlet is drained through the drainage pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic view of a beverage machine of an embodiment of the utility model.

[0032] Figure 2 is Figure 1 is a schematic view of a beverage machine in a drainage mode in

[0033] Figure 3 is Figure 1 is a schematic view of a brewing device of a beverage machine in

[0034] Figure 4 is Figure 1 is a schematic view of another structure of the control assembly of the beverage machine in the embodiment.

[0035] Figure 5 is Figure 4 is a schematic view of the beverage machine in the embodiment in the emptying mode.

[0036] Figure 6 is a schematic view of the brewing device in an embodiment of the present application.

[0037] Figure 7 is Figure 6 is a schematic view of the brewing device in the embodiment.

[0038] Figure 8 is Figure 7 is a schematic view of the upper piston of the brewing device in the embodiment.

[0039] Figure 9 is Figure 6 is a schematic view of another structure of the control assembly of the brewing device in the embodiment. DETAILED DESCRIPTION

[0040] The present application will be described in detail below with reference to the specific embodiments shown in the drawings. However, these embodiments do not limit the present application, and any changes in structure, method, or function made by those skilled in the art based on these embodiments are included in the protection scope of the present application.

[0041] It should be understood that the terms such as "upper", "above", "lower", "below" used herein to indicate the spatial relative position are for the purpose of facilitating the description of the relationship between one unit or feature and another unit or feature as shown in the drawings. The spatial relative position terms can be intended to include different orientations of the device in use or operation other than the orientation shown in the drawings.

[0042] The beverage machine 100 in the embodiment of the present application is described by taking a coffee machine as an example. Referring to FIG. 1, in the embodiment, the beverage machine 100 comprises a brewing device 30, which comprises a brewing cylinder 31, an upper piston 32, and a lower piston 33. The upper piston 32 and the lower piston 33 are respectively engaged with two ends of the brewing cylinder 31, thereby forming a closed brewing chamber 301. Figures 1 to 3

[0043] ​The beverage machine 100 further comprises a water supply line 41 selectively communicating with the brewing chamber 301 to supply water to the brewing chamber 301, and a beverage outlet 51. The water supply line 41 can supply water for beverage making or for cleaning the brewer 30. The beverage machine 100 supplies water from a water source 21 to a heater 23 via a water pump 22, and the heated water is delivered to the water supply line 41. The water source 21 can be a water tank provided in the beverage machine 100, or a bottled water, or a municipal water supply. The beverage outlet 51 is configured to output liquid produced from the brewing chamber 301, and the brewed beverage can be output to a container via the beverage outlet 51.

[0044] The brewer 30 further comprises a liquid outlet conduit 321 and a straight-through conduit 322, both of which communicate with the brewing chamber 301 and are provided in the upper piston 32. The beverage machine 100 further comprises a bypass line 61 and a beverage delivery line 62. The bypass line 61 connects the beverage outlet 51 and the straight-through conduit 322, and the beverage delivery line 62 connects the beverage outlet 51 and the liquid outlet conduit 321. The liquid outlet conduit 321 is configured to allow a resistance-communicating from the brewing chamber 301 to the beverage outlet 51, so that the liquid produced from the brewing chamber 301 is a first beverage. The straight-through conduit 322 is configured to allow a non-resistance-communicating from the brewing chamber 301 to the beverage outlet 51, so that the liquid produced from the brewing chamber 301 is a second beverage. The first beverage is different from the second beverage.

[0045] The liquid outlet pipeline 321 is a pipeline with resistance, that is, the brewed beverage needs to overcome resistance to flow out through the liquid outlet pipeline 321. The resistance of the liquid outlet pipeline 321 can be formed by a pressure valve or a throttling structure, so that the brewed beverage can flow out through the liquid outlet pipeline 321 under the action of pressure, thereby enabling the preparation of pressure coffee. The straight-through pipeline 322 is a pipeline without resistance, that is, the brewed beverage does not need to overcome resistance to flow out through the straight-through pipeline 322. The straight-through pipeline 322 is not provided with any structure forming resistance, so that the brewed beverage can flow out through the liquid outlet pipeline 321 without pressure, thereby enabling the preparation of pressureless coffee. The pressureless coffee is not extracted at zero pressure. As long as coffee is extracted, pressure will exist because the flow of liquid in the pipeline inside the beverage machine 100 itself needs pressure. However, the extraction pressure of the pressureless coffee is much smaller than that of the pressure coffee, because the pipeline for outputting coffee is not provided with additional resistance, and therefore, additional pressure to overcome the resistance is not needed. The liquid outlet pipeline 321 is a pipeline with resistance. In some embodiments, a pressure valve is arranged in the liquid outlet pipeline 321. When the pressure in the brewing chamber 301 reaches a preset pressure, the pressure valve is opened to allow the liquid to be output from the liquid outlet pipeline 321. The pressure valve can be a one-way valve 35 that allows one-way communication from the brewing chamber 301 to the liquid outlet pipeline 321. The one-way valve 35 includes a valve ball 351 and an elastic member 352 acting on the valve ball 351. The valve ball 351 is used to open or close the liquid outlet 302 on the upper piston 32. The elastic member 352 is used to press the valve ball 351 to close the liquid outlet 302. When the brewing chamber 301 is filled with coffee powder, water is supplied to the brewing chamber 301 through the water supply pipeline 41. Due to the resistance of the elastic member 352, water needs to be continuously supplied, so that the pressure in the brewing chamber 41 reaches a pressure sufficient to overcome the force of the elastic member 352. At this time, the liquid outlet 302 is opened, and the beverage liquid can be discharged from the liquid outlet pipeline 321 and the downstream pipeline to the beverage outlet 51.

[0046] The control assembly 63 is connected between the beverage delivery pipeline 62 and the bypass pipeline 61. The control assembly 63 communicates the bypass pipeline 61 and the beverage delivery pipeline 62 to deliver the liquid in the brewing chamber 301 to the beverage outlet 51 through the straight-through pipeline 322. The control assembly 63 disconnects the bypass pipeline 61 and the beverage delivery pipeline 62 to deliver the liquid in the brewing chamber 301 to the beverage outlet 51 through the liquid outlet pipeline 321.

[0047] Different beverage preparation modes can be selected by the control assembly 63. When the control assembly 63 communicates the bypass pipeline 61 and the beverage outlet 51, the liquid in the brewing chamber 301 is delivered to the beverage outlet 51 through the straight-through pipeline 322, thereby enabling the preparation of pressureless coffee. Figure 1The middle thin arrow direction shows the flow direction of the liquid in the brewing chamber 301 output to the beverage outlet 51. When the control assembly 63 disconnects the bypass pipeline 61 and the beverage outlet 51, the liquid in the brewing chamber 301 is transported to the beverage outlet 51 through the liquid outlet pipeline 321, realizing the preparation of pressure coffee, such as Figure 1 The middle thick arrow direction shows the flow direction of the liquid in the brewing chamber 301 output to the beverage outlet 51. This design enables the beverage machine 100 to prepare coffee of different flavors, thereby allowing the user to choose to prepare pressureless coffee or pressure coffee according to personal taste needs.

[0048] During use, due to the design of the water supply and liquid outlet of the brewer 30, the water flow can only usually wash from bottom to top, making it difficult to clean the filter screen 323 on the surface of the upper piston 32. The filter screen 323 often has residual coffee grounds that are not cleaned, which is difficult to clean effectively. The residual coffee grounds not only affect the extraction effect of the coffee, but also contact the extracted coffee each time, which also brings a hygiene problem, affects the taste of the coffee, and in severe cases, can even block the filter screen 323 of the upper piston 32, causing the extraction function of the brewer 30 to be abnormal. In order to improve the user experience and effectively solve the cleaning problem, in some embodiments, the beverage machine 100 further includes a cleaning pipeline 411 connected to the bypass pipeline 61 and the water supply pipeline 41; the beverage machine 100 has a cleaning mode, in which the control assembly 63 connects the water supply pipeline 41 and the cleaning pipeline 411, and disconnects the bypass pipeline 61 and the beverage outlet 51, to supply water to the brewing chamber 301 through the straight-through pipeline 322, thereby cleaning the brewing chamber 301.

[0049] When the control assembly 63 connects the water supply pipeline 41 and the cleaning pipeline 411, water can enter the brewing chamber 301 through the straight-through pipeline 322 to realize the cleaning operation of the filter screen 323 on the upper piston 32. Since the water washes the filter screen 323 from top to bottom, which is opposite to the flow direction of the liquid when extracting coffee, it is more helpful to wash down the residual coffee grounds on the filter screen 323. At this time, the cleaning water that has cleaned the filter screen 323 can pass through the brewing chamber 301 and finally be discharged through the pressure relief pipeline 44, thereby effectively cleaning the brewer 30 and its internal components, especially the filter screen 323 on the surface of the upper piston 32, effectively avoiding the residual coffee grounds.

[0050] Referring to Figure 1In some embodiments, the control assembly 63 comprises a first shut-off valve 631 arranged in the cleaning line 411 and a second shut-off valve 632 arranged in the bypass line 61, the second shut-off valve 632, the bypass line 61 and the first shut-off valve 631 can be connected through a three-way pipe 64; the beverage machine 100 has a first beverage output mode and a second beverage output mode, in the first beverage output mode, the first shut-off valve 631 and the second shut-off valve 632 are both closed, the liquid in the brewing chamber 301 is delivered to the beverage outlet 51 through the straight-through pipe 322; in the second beverage output mode, the first shut-off valve 631 is closed and the second shut-off valve 632 is opened, the liquid in the brewing chamber 301 is delivered to the beverage outlet 51 through the straight-through pipe 322.

[0051] The first beverage output mode can be a pressurized coffee output mode, and the first beverage output mode outputs a first beverage, for example, a coffee liquid with a strong flavor; the second beverage output mode can be a non-pressurized coffee output mode, and the second beverage output mode outputs a second beverage, for example, a coffee liquid with a light flavor. The arrangement of two shut-off valves to control two beverage output modes can make the pipeline arrangement more flexible, thereby facilitating the arrangement of various components in the beverage machine 100. The first shut-off valve 631 and the second shut-off valve 632 can be configured as two-way valves, which only need to connect or cut off the pipeline, and the control is simple and the cost is low.

[0052] In some embodiments, the lower piston 33 is connected with a water inlet pipe 42, the water inlet pipe 42 is connected with a pressure relief line 44, in the cleaning mode, the first shut-off valve 631 is opened, the water supply line 41 is connected with the cleaning line 411, the second shut-off valve 632 is closed, the output of the bypass line 61 to the beverage outlet 51 is disconnected, and the water supplied to the brewing chamber 301 through the straight-through pipe 322 is discharged from the pressure relief line 44.

[0053] In the cleaning mode, water is supplied to the brewing chamber 301 through the water supply line 41, the output of the bypass line 61 to the beverage outlet 51 is disconnected, and the cleaning water is discharged from the pressure relief line 44, which can effectively clean the inside of the brewer 30 without disassembling the brewer 30 for cleaning, ensuring the cleanliness of the system and prolonging the service life of the equipment.

[0054] A pressure relief valve 441 can be arranged on the pressure relief line 44, which is closed when water is supplied to the brewing chamber 301 through the water supply line 41, and is opened when liquid needs to be discharged from the brewing chamber 301. The liquid in the brewing chamber 301 will enter the water inlet pipe 42 under the action of gravity and then be discharged from the pressure relief line 44 to the waste water tray 45.

[0055] Reference Figure 1In the cleaning mode, the first shut-off valve 631 is open, water from the water supply line 41 enters the brewer 30 through the bypass line 61 and the straight-through duct 322; the second shut-off valve 632 is closed, preventing water from being directly discharged from the beverage delivery line 62 to the beverage outlet 51, thus causing waste of water resources.

[0056] To ensure that there is no residual water in the system after cleaning, in some embodiments, the beverage machine 100 further comprises a draining pump 65 connected to the beverage delivery line 62 through a draining line 651, and the bypass line 61 is connected to the beverage delivery line 62. The draining pump 65 is activated to drain the residual liquid in the beverage delivery line 62 through the draining line 651.

[0057] When the draining pump 65 is activated, the residual liquid in the beverage delivery line 62 can be drained through the draining line 651, ensuring that there is no residual liquid in the beverage delivery line 62, thereby avoiding the influence of the residual liquid on the output of the next beverage and improving the hygiene performance of the equipment.

[0058] The beverage machine 100 also has a draining mode, in which the control assembly 63 disconnects the cleaning line 411 and the bypass line 61, and connects the bypass line 61 and the beverage delivery line 62, and the draining pump 65 drains the residual liquid in the bypass line 61, the straight-through duct 322 and the beverage delivery line 62 through the draining line 651, so that the residual liquid in the bypass line 61, the straight-through duct 322 and the beverage delivery line 62 can be drained together, as shown in Figure 2 The flow direction of the liquid in the bypass line 61, the straight-through duct 322 and the beverage delivery line 62 being drained to the wastewater tray 45 is shown by the thick arrow direction.

[0059] Further, the water supply line 41 is connected to the lower piston 33 through a control valve 46. In the draining mode, the control valve 46 connects the water supply line 41 and the cleaning line 411, and the draining pump 65 drains the residual liquid in the water supply line 41 and the cleaning line 411 through the draining line 651, as shown in Figure 2 The flow direction of the liquid in the water supply line 41 and the cleaning line 411 being drained to the wastewater tray 45 is shown by the thick arrow direction.

[0060] The control valve 46 connects the water supply line 41 and the water inlet duct 42 in the draining mode, which can further drain the water in the water supply line 41 and the cleaning line 411 through the draining pump 65. All residual liquids are completely drained through the draining line 651, preventing damage to the equipment or affecting the taste caused by residual liquids.

[0061] Referring to Figure 1In the emptying mode, the first shut-off valve 631 is closed, the second shut-off valve 632 is opened, and the emptying pump 65 is started, so that the residual liquid in the bypass line 61, the straight-through duct 322 and the beverage delivery line 62 can be drawn away by the emptying pump 65. In the emptying mode, the first shut-off valve 631 can be further opened, the second shut-off valve 632 is opened, the control valve 46 is connected between the water supply line 41 and the water inlet duct 42, and the emptying pump 65 is started, so that the water in the water supply line 41, the cleaning line 411 and the water inlet duct 42 on both sides of the control valve 46 can also be completely emptied by the emptying pump 65.

[0062] With reference to Figure 4 and Figure 5 In some embodiments, the control assembly 63 comprises a third shut-off valve 633 and a three-way valve 634, the third shut-off valve 633 is arranged in the cleaning line 411, and the three-way valve 634 is arranged in the bypass line 61 and connected to the beverage outlet 51, the straight-through duct 322 and the cleaning line 411 respectively; the beverage machine 100 has a first beverage output mode and a second beverage output mode, in the first beverage output mode, the third shut-off valve 633 is closed, and the three-way valve 634 disconnects the bypass line 61 and the beverage outlet 51, so that the liquid in the brewing chamber 301 is delivered to the beverage outlet 51 through the liquid outlet duct 321, as shown by the thick arrow direction in Figure 4 In the second beverage output mode, the three-way valve 634 connects the bypass line 61 and the beverage outlet 51, so that the liquid in the brewing chamber 301 is delivered to the beverage outlet 51 through the straight-through duct 322, as shown by the thin arrow direction in Figure 4 .

[0063] The control assembly 63 comprises a third shut-off valve 633 and a three-way valve 634, which can save a three-way joint, and the specific control logic is the same as that of the two shut-off valve embodiments. In addition, since the three-way valve connects the bypass line 61 and the beverage outlet 51, the bypass line 61 is automatically disconnected from the cleaning line 411, so that even if the third shut-off valve 633 is opened, it does not affect the preparation of the pressureless coffee. In this way, in the second beverage output mode, i.e. the preparation of pressureless coffee, the coffee directly flows out from the bypass line 61 and the beverage delivery line 62, without contacting the residual liquid between the third shut-off valve 633 and the three-way valve 634, further improving the hygiene problem. Therefore, the third shut-off valve 633 does not need to be opened, and the control valve 46 is connected between the water supply line 41 and the water inlet duct 42, so that the water in the bypass line 61 does not need to be completely emptied, reducing the waste of water resources.

[0064] In the cleaning mode, the third shut-off valve 633 is opened, the three-way valve 634 is connected to the cleaning line 411 and the bypass line 61, and water from the water supply line 41 enters the brewer 30 through the bypass line 61 and the straight-through duct 322; the three-way valve 634 disconnects the water supply line 41 and the beverage delivery line 62, preventing water from being directly discharged from the beverage delivery line 62 to the beverage outlet 51, thereby causing waste of water resources.

[0065] In the emptying mode, only the three-way valve 634 needs to be disconnected from the cleaning line 411, and the residual liquid in the bypass line 61, the straight-through duct 322 and the beverage delivery line 62 can be pumped out by the emptying pump 65, as shown in Figure 5 The arrow direction shows the flow direction of the liquid in the bypass line 61, the straight-through duct 322 and the beverage delivery line 62 to the waste water tray 45. Since the residual liquid between the third shut-off valve 633 and the three-way valve 634 is shut off, there is no need to further empty the water supply line 41 and the water inlet duct 42. This residual liquid will automatically pass through the bypass line 61 and the straight-through duct 322 to the brew chamber 301 the next time the cleaning mode is started, and finally be discharged from the pressure relief line 44 to the waste water tray 45.

[0066] In some embodiments, the utility model also provides a brewing device 200, which is taken as an example of a brewing device 200 capable of brewing coffee particles. Referring to Figures 6 to 9 , the brewing device 200 comprises a bracket 10 and a brewer 30 arranged on the bracket 10. The brewer 30 comprises a brew cylinder 31, an upper piston 32 and a lower piston 33. The brew cylinder 31 is arranged on the bracket 10. The upper piston 32 and the lower piston 33 are respectively engaged with two ends of the brew cylinder 31 to form a brew chamber 301 for generating liquid flowing out of a beverage outlet 51 of the beverage machine 100. When the upper piston 32 is separated from the brew chamber 301, beverage particles can be filled into the brew chamber 301 from an upper opening of the brew chamber 301.

[0067] The upper piston 32 is selectively engaged with the brew cylinder 31 from the upper opening to close the brew chamber 301. The lower piston 33 is engaged with the brew cylinder 31 and is movable relative to the brew cylinder 31 to change the volume of the brew chamber 301. The lower piston 33 and the brew cylinder 31 are relatively moved in a first direction to change the volume of the brew chamber 301. The first direction is, for example Figure 5 , the direction of the arrow M. In this embodiment, the brew cylinder 31 is vertically placed, and the brew cylinder 31 is configured as a cylindrical shape. The first direction can be considered as the axial direction of the brew cylinder 31. In other implementable schemes, the brew cylinder 31 can also be placed obliquely, and the axial direction of the brew cylinder 31 is then at an angle to the vertical direction.

[0068] The support 10 is provided with a driving mechanism, which can be a mechanism for transmitting the movement of a power source to the upper piston 32 and the lower piston 33 to make the upper piston 32 or the lower piston 33 move linearly relative to the brewing cylinder 31. In this embodiment, the driving mechanism directly drives the brewing cylinder 31 to move up and down, and the brewing cylinder 31 moves up and down to drive the lower piston 33 to move, while the upper piston 32 is stationary. In other implementable solutions, the brewing cylinder can be driven by the driving mechanism to move up and down.

[0069] The upper piston 32 is provided with a liquid outlet pipe 321 and a straight-through pipe 322, and the lower piston 33 is connected to the water inlet pipe 42. The liquid outlet pipe 321 and the straight-through pipe 322 are both used to connect the beverage outlet 51. The liquid outlet pipe 321 is configured as a resistance pipe, which allows the communication from the brewing chamber 301 to the beverage outlet 51 when the pressure in the brewing chamber 301 reaches a preset pressure. The straight-through pipe 322 is configured as a non-resistance pipe. The straight-through pipe 322 and the liquid outlet pipe 321 alternatively output the liquid in the brewing chamber 301. When the liquid is output through the straight-through pipe 322, the pressure in the brewing chamber 301 is less than the preset pressure. When the liquid is output through the liquid outlet pipe 321, the pressure in the brewing chamber 301 reaches the preset pressure.

[0070] The liquid outlet pipe 321 is a resistance communication pipe, i.e., the brewed beverage needs to overcome resistance to flow out through the liquid outlet pipe 321. The resistance of the liquid outlet pipe 321 can be formed by a pressure valve or a throttling structure, so that the brewed beverage can flow out through the liquid outlet pipe 321 under the action of pressure, thereby making pressurized coffee. The straight-through pipe 322 is a non-resistance communication pipe, i.e., the brewed beverage directly flows out through the straight-through pipe 322 without overcoming resistance. The straight-through pipe 322 is not provided with any structure forming resistance, so that the brewed beverage can flow out through the liquid outlet pipe 321 without pressure, thereby making non-pressurized coffee. The non-pressurized coffee is not extracted at zero pressure. There is always pressure in the extraction of coffee, because the flow of liquid in the pipe inside the beverage machine 100 itself needs pressure. However, the extraction pressure of the non-pressurized coffee is much smaller than that of the pressurized coffee, because the pressurized coffee needs to overcome additional resistance during extraction. Therefore, the non-pressurized coffee is only relative to the pressurized coffee, i.e., no additional resistance is provided in the pipe for outputting coffee, and therefore, no additional pressure is needed to overcome the resistance.

[0071] When the straight-through pipe 322 is disconnected from the beverage outlet 51, the liquid in the brewing chamber 301 is output through the liquid outlet pipe 321. When the straight-through pipe 322 is connected to the beverage outlet 51, the liquid in the brewing chamber 301 is output through the straight-through pipe 322. Based on the different pipes for outputting liquid, the beverage outlet 51 can output different beverage liquids.

[0072] In some embodiments, the liquid outlet pipe 321 is arranged in the center of the upper piston 32, and the straight-through pipe 322 is offset relative to the liquid outlet pipe 321, facilitating the installation of the liquid outlet pipe 321 and the straight-through pipe 322 in the upper piston 32.

[0073] In some embodiments, the upper piston 32 includes a piston cylinder 320, the liquid outlet pipe 321 and the straight-through pipe 322 are arranged in the piston cylinder 320, the straight-through pipe 322 is connected to a pipe support plate 325, the pipe support plate 325 is engaged with the cylinder wall of the piston cylinder 320, the liquid outlet pipe 321 passes through the pipe support plate 325, the edge of the pipe support plate 325 extends outward along the axial direction of the piston cylinder 320 to form a flange 326, the flange 326 is provided with a cantilever clamping block 327, the cylinder wall of the piston cylinder 320 is provided with a first clamping groove 341, and the cantilever clamping block 327 is inserted into the first clamping groove 341. The straight-through pipe 322 is positioned and installed in the piston cylinder 320 through the pipe support plate 325, which is convenient and reliable.

[0074] The brewing device 200 further includes a pipe joint 36 connected to the liquid outlet pipe 321, the pipe joint 36 is connected to a pipe bracket 361, the pipe bracket 361 has a clamping arm 362 extending along the axial direction of the piston cylinder 320, the clamping arm 362 protrudes outward from the piston cylinder 320, the clamping arm 362 is provided with a clamping block 363, the piston cylinder 320 is provided with a second clamping groove 342, and the second clamping block 363 is inserted into the second clamping groove 342. The pipe support plate 325 is arranged below the pipe bracket 361. The clamping arm 362 can be arranged to facilitate the connection of the pipe joint 36 and the liquid outlet pipe 321, and the operation of the clamping arm 362 to separate the second clamping block 363 from the second clamping groove 342 can facilitate the disassembly of the pipe joint 36.

[0075] In some embodiments, the brewing device 200 further includes a valve 33 arranged in the piston cylinder 320, the valve 33 is connected to the liquid outlet pipe 321 and the straight-through pipe 322, and the valve 33 is arranged to selectively connect the liquid outlet pipe 321 and the straight-through pipe 322 to the pipe joint 36. Figure 6 The connection of the liquid outlet pipe 321 and the straight-through pipe 322 to the respective pipes outside the brewing device 31, the specific state of each valve in the first beverage output mode, the second beverage output mode, the cleaning mode, and the emptying mode are the same as those of the beverage machine 100 described above, and will not be described again here.

[0076] In the above embodiments, when the pressure in the brewing chamber 301 is less than the first pressure, the liquid in the brewing chamber 301 is delivered to the beverage outlet 51 through the straight-through pipe 322, realizing the preparation of pressureless coffee. When the pressure in the brewing chamber 301 reaches the first pressure, the liquid in the brewing chamber 301 is delivered to the beverage outlet 51 through the liquid outlet pipe 321, realizing the preparation of pressure coffee. This design allows the brewing device 200 to prepare different flavors of coffee, thereby allowing users to choose to prepare pressureless coffee or pressure coffee according to their personal taste needs.

[0077] The straight-through pipeline 322 is configured as a non-blocking bidirectional communication pipeline, the water inlet pipeline 42 supplies water through the water supply pipeline 41 of the beverage machine 100, and the straight-through pipeline 322 is also used for connecting the water supply pipeline 41. When the straight-through pipeline 322 is disconnected from the beverage outlet 51, the water supply pipeline 41 supplies water to the brewing chamber 301 through the straight-through pipeline 322, so as to clean the brewing chamber 301.

[0078] The water enters the brewing chamber 301 through the straight-through pipeline 322, and the cleaning operation of the upper filter screen 323 on the upper piston 32 is realized.

[0079] The liquid outlet pipeline 321 is also used for connecting the emptying pipeline 651 of the beverage machine 100, the emptying pipeline 651 is in communication with the emptying pump 65, and when the straight-through pipeline 322 is in communication with the beverage outlet 51 and the emptying pump 65 is started, the liquid between the straight-through pipeline 322 and the beverage outlet 51 is discharged through the emptying pipeline 651.

[0080] The residual liquid in each pipeline can be effectively discharged through the emptying pipeline 651, and the sanitary performance of the brewing device 200 is further ensured.

[0081] Of course, the brewing device 200 described above is not limited to application in the coffee machine, and can also be used in other beverage brewing devices, such as tea machines or other brewing beverage devices.

[0082] It should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description of the specification is only for the sake of clarity. The skilled person should consider the specification as a whole, and the technical solutions in each embodiment can also be combined to form other embodiments that can be understood by the skilled person.

[0083] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the utility model, and are not used to limit the protection scope of the utility model. Any equivalent embodiments or changes made without departing from the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A beverage machine comprising: a brewer comprising a brew cylinder, an upper piston and a lower piston, the upper and lower pistons engaging with two ends of the brew cylinder to form a brew chamber; a water supply line selectively communicating with the brew chamber to supply water to the brew chamber; a beverage outlet for outputting liquid produced from the brew chamber; characterized in that the brewer comprises a liquid outlet conduit and a straight-through conduit, both communicating with the brew chamber, the liquid outlet conduit and the straight-through conduit being provided in the upper piston, the beverage machine further comprising a bypass line connecting the beverage outlet and the straight-through conduit, and a beverage delivery line connecting the beverage outlet and the liquid outlet conduit, the liquid outlet conduit being configured to allow a resistance-communicating from the brew chamber to the beverage outlet to cause the liquid produced from the brew chamber to be a first beverage, the straight-through conduit being configured to allow a non-resistance-communicating from the brew chamber to the beverage outlet to cause the liquid produced from the brew chamber to be a second beverage, the first beverage being different from the second beverage; and further comprising a control assembly controllably communicating the bypass line and the beverage outlet to deliver the liquid from the brew chamber to the beverage outlet through the straight-through conduit, and controllably disconnecting the bypass line and the beverage outlet to deliver the liquid from the brew chamber to the beverage outlet through the liquid outlet conduit.

2. The beverage maker of claim 1, wherein, the beverage machine further comprising a cleaning line connecting the bypass line and the water supply line, the beverage machine having a cleaning mode in which the control assembly communicates the water supply line and the cleaning line, and disconnects the bypass line and the beverage outlet to supply water to the brew chamber through the straight-through conduit to clean the brew chamber.

3. The beverage maker of claim 2, wherein, the control assembly comprising a first shut-off valve provided in the cleaning line, and a second shut-off valve provided in the bypass line, the beverage machine having a first beverage output mode in which the first and second shut-off valves are both closed, and the liquid from the brew chamber is delivered to the beverage outlet through the liquid outlet conduit, and a second beverage output mode in which the first shut-off valve is closed and the second shut-off valve is open, and the liquid from the brew chamber is delivered to the beverage outlet through the straight-through conduit.

4. The beverage maker of claim 2, wherein the control assembly comprising a third shut-off valve provided in the cleaning line, and a three-way valve provided in the bypass line and connecting the beverage outlet, the straight-through conduit and the cleaning line, the beverage machine having a first beverage output mode in which the third shut-off valve is closed and the three-way valve disconnects the bypass line and the beverage outlet, and the liquid from the brew chamber is delivered to the beverage outlet through the liquid outlet conduit, and a second beverage output mode in which the three-way valve communicates the bypass line and the beverage outlet, and the liquid from the brew chamber is delivered to the beverage outlet through the straight-through conduit. ​ 5. The beverage maker of claim 2, wherein, The lower piston is connected with a water inlet pipe, and the water inlet pipe is connected with a pressure relief pipe; in the cleaning mode, the cleaning pipe discharges water from the pressure relief pipe through the straight-through pipe.

6. A drinks machine as claimed in any of claims 2 to 5, characterised in that, An emptying pump is further included, which is connected with the beverage delivery pipe through an emptying pipe, and the bypass pipe is connected with the beverage delivery pipe.

7. The drinks machine of claim 6, wherein, The beverage machine further has an emptying mode, in which the control assembly disconnects the cleaning pipe and the bypass pipe, and connects the bypass pipe with the beverage delivery pipe, and the emptying pump discharges residual liquid in the bypass pipe, the straight-through pipe and the beverage delivery pipe through the emptying pipe.

8. The drinks machine of claim 7, wherein, A control valve is connected between the water supply pipe and the lower piston, and in the emptying mode, the control valve connects the water supply pipe with the cleaning pipe, and the emptying pump discharges residual liquid in the water supply pipe and the cleaning pipe through the emptying pipe.

9. A brewing device, comprising: a support; a brewer including a brewing cylinder, an upper piston and a lower piston, the brewing cylinder being arranged on the support, the upper piston and the lower piston being engaged with two ends of the brewing cylinder respectively to form a brewing chamber for producing liquid flowing out of a beverage outlet of a beverage machine; characterized in that the upper piston is provided with a liquid outlet pipe and a straight-through pipe, and the lower piston is connected with a water inlet pipe, the liquid outlet pipe and the straight-through pipe being used for connecting the beverage outlet; the liquid outlet pipe is configured as a resistance pipe, and when the pressure in the brewing chamber reaches a preset pressure, the liquid outlet pipe allows the connection from the brewing chamber to the beverage outlet; the straight-through pipe is configured as a non-resistance pipe; the straight-through pipe and the liquid outlet pipe output liquid in the brewing chamber alternatively; when the liquid is output through the straight-through pipe, the pressure in the brewing chamber is less than the preset pressure; when the liquid is output through the liquid outlet pipe, the pressure in the brewing chamber reaches the preset pressure.

10. The brewing device according to claim 9, characterized in that When the straight-through pipe is disconnected with the beverage outlet, the liquid in the brewing chamber is output through the liquid outlet pipe; when the straight-through pipe is connected with the beverage outlet, the liquid in the brewing chamber is output through the straight-through pipe.

11. The brewing device of claim 9, wherein, The liquid outlet pipe is arranged at the center of the upper piston, and the straight-through pipe is offset relative to the liquid outlet pipe; the upper piston includes a piston cylinder, the liquid outlet pipe and the straight-through pipe are arranged in the piston cylinder, the straight-through pipe is connected with a pipe support plate, the pipe support plate is engaged with a cylinder wall of the piston cylinder, the liquid outlet pipe passes through the pipe support plate, an edge of the pipe support plate extends a lug plate along an axial direction of the piston cylinder, the lug plate is provided with a cantilever clamping block, and the cylinder wall of the piston cylinder is provided with a first clamping groove, and the cantilever clamping block is inserted into the first clamping groove.

12. The brewing device of claim 9, wherein, The straight-through pipeline is configured as a non-blocking bidirectional communication pipeline, the water inlet pipeline is supplied with water by a water supply pipeline of the beverage machine, and the straight-through pipeline is also used for connecting the water supply pipeline, so that when the straight-through pipeline is disconnected from the beverage outlet, the water supply pipeline supplies water to the brewing chamber through the straight-through pipeline, thereby cleaning the brewing chamber.

13. The brewing device according to any one of claims 9-12, characterized in that The liquid outlet pipeline is also used for connecting a drainage pipeline of the beverage machine, the drainage pipeline is communicated with a drainage pump, the water inlet pipeline is supplied with water by a water supply pipeline, and the straight-through pipeline is also used for connecting the water supply pipeline, so that when the straight-through pipeline is communicated with the beverage outlet and the drainage pump is started, liquid between the straight-through pipeline and the beverage outlet is drained through the drainage pipeline.

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