A beverage machine
Beverage machines controlled by air pumps utilize liquid level and pressure sensors for automated operation, solving the problems of milk denaturation caused by high-temperature steam and complex operation, enabling convenient preparation of dense foamed milk, improving user experience and beverage diversity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG XINBAO ELECTRICAL APPLIANCES HLDG CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-03
AI Technical Summary
Existing coffee machines cause milk denaturation and nutrient loss due to high-temperature steam during milk frothing, and the operation is cumbersome, resulting in a poor user experience; existing beverage machines are complicated to operate when filling with nitrogen, also resulting in a poor user experience.
An air pump is used to evacuate and inflate beverage cans, combined with liquid level and pressure sensors for control, to achieve automated operation, produce dense foam and add flavor. Solenoid valves and one-way valves are used to prevent negative pressure backflow and air pressure reflux, and refrigeration components are used to improve the taste.
It simplifies the process, produces rich foam to enhance flavor, prevents milk denaturation, reduces the impact of water, improves the user experience, provides a refreshing taste, and offers a variety of beverage options.
Smart Images
Figure CN224441016U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of household appliance technology, and in particular to a beverage machine for preparing nitrogen-containing beverages. Background Technology
[0002] Currently, most coffee machines generate high-temperature steam by evaporating water from the boiler's pipes at temperatures above 120°C. This high-temperature steam is then released and mixed with milk to create foam. However, milk denatures at temperatures above 62°C, leading to nutrient loss. Furthermore, the high-temperature steam contains moisture, which can easily cause the milk to mix with a large amount of water, thus diluting the milk's flavor.
[0003] Furthermore, in existing technologies, nitrogen (or air) is typically added to beverages to enhance their texture and make them more effervescent. For example, Chinese utility model patent CN207804057U discloses an extraction device for nitrogen-containing beverages. This device involves storing a mixture of raw material filter bags and water in a pressure tank, placing the pressure tank in a refrigeration unit for extraction, and then filling the pressure tank with nitrogen through a first pipeline. After extraction, the raw material filter bags are removed, the pressure is replenished, and the extracted beverage is discharged from the pressure tank through a second pipeline. This process is cumbersome and results in a poor user experience. Utility Model Content
[0004] In view of the above-mentioned problems existing in the prior art, the purpose of this application is to provide a beverage machine that uses an air pump to evacuate and inflate beverage cans, making operation convenient, and can produce dense foam to add a unique flavor when making milk or other beverages.
[0005] The technical solution adopted in this application embodiment is a beverage machine, comprising:
[0006] Beverage extraction container, containing beverages;
[0007] A beverage can, the first interface at its top of which is connected to the beverage extraction can via a first pipe;
[0008] An air pump has its inlet connected to a second interface on the top of the beverage can via a second pipe. This air pump draws gas from the beverage can through the second pipe, creating a negative pressure inside the beverage can to draw the beverage from the extraction container into the beverage can. The air pump's outlet is connected to the second interface of the beverage can via a third pipe. When the beverage in the beverage can reaches a preset liquid level, the outlet is used to pressurize the beverage can by adding air through the third pipe, thus increasing the pressure inside the beverage can to a preset pressure.
[0009] A mixer is connected to a third port at the bottom of the beverage can via a fourth pipe, so that when the pressure inside the beverage can reaches a preset pressure, the beverage inside the beverage can enters the mixer through the fourth pipe; the mixer is also connected to an air pump via a fifth pipe, so that the air pump supplies air to the mixer, and the gas mixes with the beverage from the beverage can in the mixer and is discharged from the outlet of the mixer.
[0010] In an optional embodiment, a first solenoid valve is provided on the second pipeline;
[0011] The beverage can is equipped with a level sensor for monitoring the liquid level inside the can. When the liquid level reaches the preset level, the level sensor controls the first solenoid valve to cut off the second pipeline, causing the air pump to stop pumping air from the beverage can. By setting the first solenoid valve and the level sensor, not only can the liquid level inside the beverage can be monitored in a timely and accurate manner, but the air pump can also be controlled to stop pumping air from the beverage can when the liquid level reaches the preset level.
[0012] In an optional embodiment, a second solenoid valve is provided on the third pipeline; when the liquid level in the beverage can reaches the preset liquid level, the liquid level sensor controls the second solenoid valve to open the third pipeline, so that the air pump can inflate the beverage can. By setting a second solenoid valve that cooperates with the liquid level sensor, the third pipeline can be opened in a timely manner, and the air pump can be started to inflate the beverage can.
[0013] In an optional embodiment, a control switch is provided on the fourth pipeline;
[0014] The beverage can is equipped with a pressure sensor for monitoring the pressure inside the can. When the pressure inside the can reaches the preset pressure, the pressure sensor controls the control switch to open, thereby connecting the fourth pipeline and allowing the beverage inside the can to enter the mixer through the fourth pipeline. By setting up the control switch and the pressure sensor, not only can the pressure inside the beverage can be monitored accurately and in a timely manner, but also the control switch can be opened promptly when the pressure inside the can reaches the preset pressure, allowing the beverage mixed with nitrogen to enter the mixer.
[0015] In an optional embodiment, both the first solenoid valve and the second solenoid valve are three-way solenoid valves, with the first port and the second port of the first solenoid valve connected in series on the second pipeline, and the first port and the second port of the second solenoid valve connected in series on the third pipeline.
[0016] The beverage machine also includes a sixth pipe, one end of which is connected to the third port of the first solenoid valve, and the other end of which is connected to the third port of the second solenoid valve. The sixth pipe is provided with an air hole that communicates with the outside atmosphere.
[0017] When the air pump evacuates the beverage can through the air inlet and the second pipeline, the first solenoid valve is in a state where its first and second ports are open, and its third port is simultaneously closed to both ports; the second solenoid valve is in a state where its first and third ports are open, and its second port is simultaneously closed to both ports. The gas discharged from the air pump's outlet enters the sixth pipeline through the second solenoid valve and is discharged outward through the air hole. By setting both the first and second solenoid valves as three-way solenoid valves and adding a sixth pipeline, the air pump's inlet and outlet can form a circulation loop, achieving effective automatic control of evacuating the beverage can.
[0018] In an optional embodiment, when the air pump inflates the beverage can through the air outlet and the third pipeline, the first solenoid valve is in a state where its first port and its third port are open, and its second port is simultaneously disconnected from its first port and its third port; the second solenoid valve is in a state where its first port and its second port are open, and its third port is simultaneously disconnected from its first port and its second port; the air inlet of the air pump is connected to the air hole on the sixth pipeline through the first solenoid valve to draw in outside air.
[0019] In an optional embodiment, a silencer box is provided on the sixth pipeline, and the silencer box has an air vent that communicates with the outside atmosphere. By providing the silencer box, the operating noise of the air pump can be reduced.
[0020] In an optional embodiment, the first pipeline is equipped with a filter and a first one-way valve, with the filter located upstream of the first one-way valve in the direction of beverage flow. The filter can filter impurities in the beverage, increasing its purity and extending the machine's lifespan; the first one-way valve can prevent backflow when negative pressure is generated in the beverage extraction tank.
[0021] In an optional embodiment, the fifth pipeline is equipped with a valve switch and a second check valve, with the valve switch located upstream of the second check valve in the gas flow direction. The second check valve prevents backflow of gas pressure.
[0022] In an optional embodiment, a cooling element is provided on the outer peripheral wall of the beverage can to enhance the refreshing taste of the beverage and increase the user's variety of choices.
[0023] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows:
[0024] 1. This application is easy to operate and can achieve one-click beverage preparation;
[0025] 2. By using an air pump to inflate the beverage can, dense foam can be produced when frothing milk or other beverages, adding a unique flavor. The pressure can be freely adjusted to extract flavors at different pressures.
[0026] 3. By using an air pump to drive beverages instead of the water pump in existing technology, the residual water in the pipeline is reduced, making it clean and hygienic for users to drink, and preventing the secondary use of beverages due to residual liquid in the pipeline.
[0027] 4. The beverage extraction tank can be filled with milk or other beverages, allowing users to freely choose their favorite drinks; at the same time, the beverage tank combined with the refrigeration unit can be used to make cold-brewed beverages, enhancing the refreshing taste and increasing the variety of choices for users.
[0028] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this application.
[0029] The overview of various implementations or examples of the technology described in this application is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description
[0030] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to illustrate the claimed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts.
[0031] Figure 1 This is a schematic diagram of a beverage machine according to an embodiment of this application.
[0032] Figure 2 This is a schematic diagram of the beverage machine in the suction state according to an embodiment of this application.
[0033] Figure 3 This is a schematic diagram of the beverage machine in the pressurized state according to an embodiment of this application.
[0034] Figure 4 This is a schematic diagram of the beverage machine in the released state according to an embodiment of this application.
[0035] Figure label:
[0036] 1- Beverage extraction tank;
[0037] 2-Beverage can; 21-First interface; 22-Second interface; 23-Third interface;
[0038] 3-Air pump; 31-Air inlet; 32-Air outlet;
[0039] 4-Mixer; 41-Water outlet; 5-First solenoid valve; 6-Second solenoid valve; 7-Control switch; 8-Valve switch; 9-Silencer box; 10-Filter; 11-First check valve; 12-Second check valve; 13-Beverage cup; 14-First pipeline; 15-Second pipeline; 16-Third pipeline; 17-Fourth pipeline; 18-Fifth pipeline; 19-Sixth pipeline; 20-Level sensor; 24-Pressure sensor; 25-Refrigeration component. Detailed Implementation
[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.
[0041] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0042] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of known functions and known components are omitted.
[0043] like Figure 1As shown in the illustration, this application provides a beverage machine, which includes a beverage extraction tank 1, a beverage container 2, an air pump 3, and a mixer 4. The beverage extraction tank 1 contains a beverage, including but not limited to drinks and milk. A first port 21 at the top of the beverage container 2 is connected to the beverage extraction tank 1 via a first pipe 14, allowing the beverage in the beverage extraction tank 1 to enter the beverage container 2. The air inlet 31 of the air pump 3 is connected to the second port 22 at the top of the beverage container 2 via a second pipe 15, used to draw gas from the beverage container 2 through the second pipe 15, creating a negative pressure inside the beverage container 2 to draw the beverage from the beverage extraction tank 1 into the beverage container 2. The air outlet 32 of the air pump 3 is connected to the second port 22 of the beverage container 2 via a third pipe 16, used to pressurize the beverage container 2 through the third pipe 16 when the beverage in the beverage extraction tank 1 is drawn into the beverage container 2 and the beverage in the beverage container 2 reaches a preset liquid level, so that the pressure inside the beverage container 2 reaches a preset pressure. The mixer 4 is connected to the third port 23 at the bottom of the beverage can 2 via the fourth pipe 17, so that when the air pump 3 pressurizes the beverage can 2 to reach the preset pressure, the beverage in the beverage can 2 enters the mixer 4 through the fourth pipe 17. The mixer 4 is also connected to the air pump 3 via the fifth pipe 18, so that the air pump 3 supplies air to the mixer 4 while pressurizing the beverage can 2. The gas mixes with the beverage from the beverage can 2 in the mixer 4 and is discharged from the outlet 41 of the mixer 4.
[0044] The beverage machine of this embodiment utilizes an air pump 3 to evacuate and inflate the beverage tank 2. This not only automatically transfers the beverage from the beverage extraction tank 1 into the beverage tank 2, but also infuses the beverage in the beverage tank 2 with compressed air, whose main component is nitrogen, to create rich, dense foam, enhancing the taste. Furthermore, a suitable amount of nitrogen (since air's main component is nitrogen, and air has similar functions to nitrogen, it will be referred to as nitrogen in the following description, referring to the gas entering and exiting the air pump 3) supports the human respiratory process, maintains pressure balance, forms amino acids, transports metabolites, and aids in cell repair. When the beverage is milk, it also achieves room-temperature gas frothing to prevent high-temperature denaturation of the milk, and ensures that no water affects the milk's flavor. In addition, the beverage machine of this embodiment is simple to operate, reducing manual intervention and improving the user experience.
[0045] In some embodiments, continue to combine Figure 1A first solenoid valve 5 is installed on the second pipeline 15. A level sensor 20 is installed on the beverage can 2 to monitor the liquid level inside the beverage can 2. When the liquid level inside the beverage can 2 reaches the preset level, the level sensor 20 controls the first solenoid valve 5 to cut off the second pipeline 15, so that the air pump 3 stops pumping air into the beverage can 2. By setting the first solenoid valve 5 and the level sensor 20, not only can the liquid level (beverage volume) inside the beverage can 2 be monitored in a timely and accurate manner, but also the air pump 3 can be controlled to stop pumping air into the beverage can 2 in a timely manner when the liquid level reaches the preset level, so as to avoid excessive beverage being sucked into the beverage can 2 and affecting the normal operation of the beverage machine.
[0046] In some embodiments, such as Figure 1 As shown, a second solenoid valve 6 is installed on the third pipeline 16. When the liquid level in the beverage tank 2 reaches the preset level, the liquid level sensor 20 simultaneously controls the second solenoid valve 6 to open the third pipeline 16, so that the air pump 3 can inflate the beverage tank 2. By setting the second solenoid valve 6 in conjunction with the liquid level sensor 20, the third pipeline 16 can be opened in a timely manner, and the air pump 3 can be started to inflate the beverage tank 2, thereby improving the automation level of the beverage machine.
[0047] In some embodiments, such as Figure 1 As shown, a control switch 7 is installed on the fourth pipe 17. A pressure sensor 24 is installed on the beverage container 2 to monitor the pressure inside the container. When the pressure inside the container reaches a preset pressure, the pressure sensor 24 controls the control switch 7 to open, thus connecting the fourth pipe 17 and allowing the beverage in the container 2 to enter the mixer 4 through the fourth pipe 17. By setting the control switch 7 and the pressure sensor 24, not only can the pressure inside the beverage container 2 be monitored accurately and in a timely manner, but also when the pressure inside the container 2 reaches the preset pressure, it indicates that the nitrogen filling of the beverage is complete (the beverage contains a preset amount of nitrogen), and the control switch 7 is opened in a timely manner, allowing the nitrogen-mixed beverage to enter the mixer 4.
[0048] Understandably, the level sensor 20 and pressure sensor 24 are used to monitor changes in the liquid level and pressure within the beverage container 2, respectively, and convert these changes into electrical signals. These electrical signals can be changes in voltage, current, or resistance, etc. The electrical signals are transmitted to the processor of the beverage machine's control system. The processor amplifies, filters, and converts the signals to extract useful information. Based on this information, the processor sends corresponding control commands to the first solenoid valve 5 and the second solenoid valve 6. Upon receiving the corresponding control commands, the solenoid coils of the first and second solenoid valves attract the valve cores to move, thereby changing the opening and closing state of the solenoid valves. This allows the first and second solenoid valves 5 and 6 to control the flow of fluid in the second pipeline 15 and the third pipeline 16, respectively (closing or opening the second pipeline 15 and the third pipeline 16). Of course, the level sensor 20 and pressure sensor 24 can also be integrated with control units to directly control the solenoid valves.
[0049] For example, such as Figure 1 As shown, both the first solenoid valve 5 and the second solenoid valve 6 are three-way solenoid valves. The first and second ports of the first solenoid valve 5 are connected in series to the second pipe 15, and the first and second ports of the second solenoid valve 6 are connected in series to the third pipe 16. The beverage machine also includes a sixth pipe 19. One end of the sixth pipe 19 is connected to the third port of the first solenoid valve 5, and the other end of the sixth pipe 19 is connected to the third port of the second solenoid valve 6. The sixth pipe 19 has an air vent (not shown in the figure) that communicates with the outside atmosphere. Figure 2 As shown, when the air pump 3 evacuates the beverage can 2 through the air inlet 31 and the second pipeline 15, the first solenoid valve 5 is in a state where its first and second ports are open, and its third port is simultaneously closed to its first and second ports; the second solenoid valve 6 is in a state where its first and third ports are open, and its second port is closed to both its first and third ports. The gas discharged from the air outlet 32 of the air pump 3 enters the sixth pipeline 19 through the second solenoid valve 6 and is discharged outward through the air hole. By setting both the first solenoid valve 5 and the second solenoid valve 6 as three-way solenoid valves and adding the sixth pipeline 19, the air inlet and outlet of the air pump 3 can form a circulation loop, realizing effective automatic control of evacuating the beverage can 2.
[0050] Furthermore, such as Figure 3As shown, when the air pump 3 inflates the beverage can 2 through the air outlet 32 and the third pipeline 16, the first solenoid valve 5 is in a state where its first and third ports are open, and its second port is simultaneously closed to both its first and third ports; the second solenoid valve 6 is in a state where its first and second ports are open, and its third port is closed to both its first and second ports. The air inlet 31 of the air pump 3 is connected to the air hole on the sixth pipeline 19 through the first solenoid valve 5 to draw in outside air. In this way, the air pump 3 automatically inflates the beverage can 2.
[0051] In some embodiments, such as Figure 1 As shown, a silencer box 9 is installed on the sixth pipeline 19, and the silencer box 9 has an air vent that communicates with the outside atmosphere. By installing the silencer box 9, the operating noise of the air pump 3 can be reduced.
[0052] Furthermore, continue to combine Figure 1 The first pipeline 14 is equipped with a filter 10 and a first one-way valve 11. In the direction of beverage flow, the filter 10 is located upstream of the first one-way valve 11. The filter 10 can filter impurities in the beverage, increasing the purity of the beverage and extending the service life of the machine. The first one-way valve 11 can prevent backflow when negative pressure is generated in the beverage extraction tank 1.
[0053] like Figure 1 As shown, the fifth pipeline 18 is equipped with a valve switch 8 and a second check valve 12. In the gas flow direction, the valve switch 8 is located upstream of the second check valve 12. By installing the valve switch 8 on the fifth pipeline 18, the air pump 3 can supply air to the mixer 4 only during the beverage tank 2 release stage (the stage of discharging beverage to the mixer 4), avoiding the waste of gas and energy caused by supplying air to the mixer 4 during the pumping and pressurizing stage of the beverage tank 2. The second check valve 12 can prevent backflow of gas pressure.
[0054] Understandably, both the control switch 7 and the valve switch 8 are electric switches, and both open when the pressure sensor 24 detects that the pressure inside the beverage container 2 has reached the preset pressure, so as to deliver the beverage and nitrogen to the mixer 4 through the fourth pipeline 17 and the fifth pipeline 18 respectively, so as to achieve secondary combination and mixing of the beverage and nitrogen, increase the nitrogen content in the beverage, and produce a rich and dense foam beverage that falls into the user's beverage cup 13 for the user to drink.
[0055] In some embodiments, a cooling component 25 can be added to the beverage can 2 to enhance the refreshing taste of the beverage and increase the variety of choices for users. For example, the cooling component 25 can be arranged around the outer peripheral wall of the beverage can 2 to effectively transfer cold energy into the beverage can 2 and ensure the uniformity of temperature inside the beverage can 2.
[0056] The refrigeration component 25 can be an evaporator tube, which is connected to the compressor and cooler to form a refrigeration system and ensure the refrigeration effect. In addition to being coiled around the outer wall of the beverage can 2, the evaporator tube can also be directly immersed in the beverage can 2 to achieve rapid cooling.
[0057] The working process and working principle of the beverage machine according to an embodiment of this application will be described below with reference to the accompanying drawings:
[0058] like Figure 2 As shown, first, the air pump 3 is started. The air pump 3 begins to work, drawing in air through its air inlet 31. The air passes through the filter 10, the first one-way valve 11, the first port 21, the second port 22, and the first solenoid valve 5 (the first and second ports of the first solenoid valve 5 are open, and the third port is closed) and enters the air pump 3's air inlet 31. Figure 2 The red pipe in the middle is used for air intake; the air drawn in by the air pump 3 goes from the air outlet 32 of the air pump 3 to the second solenoid valve 6 and then to the silencer box 9 to be discharged into the atmosphere, along the... Figure 2 The blue-lined pipe in the middle is used for venting; due to the negative pressure generated by the air pump 3, the beverage in beverage extraction tank 1 flows along the first pipe 14 through the filter 10 and the first one-way valve 11 into beverage tank 2, until the liquid level sensor 20 in beverage tank 2 detects that the liquid level has reached the preset level. At the same time, the cooling component 25 can quickly cool the beverage in beverage tank 2. At this time, the beverage in beverage tank 2 is the same as the beverage in beverage extraction tank 1, and is nitrogen-free.
[0059] like Figure 3 As shown, when the liquid level sensor 20 detects that the liquid level in the beverage can 2 has reached the target, the first and third ports of the first solenoid valve 5 are connected, and the first and second ports of the second solenoid valve 6 are connected. Air enters from the silencer box 9 through the air inlet 31 of the air pump 3 via the first solenoid valve 5, and nitrogen is released from the second solenoid valve 6 through the second port 22 of the beverage can 2 via the air outlet 32, pressurizing the beverage can 2. Figure 3 The blue lines in the container are used to inflate the beverage, allowing the nitrogen to fully agitate and mix with the drink until the pressure sensor 24 detects that the pressure inside the beverage container 2 has reached the appropriate pressure (the preset pressure). At this point, the liquid inside the beverage container 2 is a mixture of the drink and nitrogen.
[0060] like Figure 4 As shown, when the pressure sensor 24 detects that the pressure inside the beverage can 2 meets the preset pressure, the control switch 7 changes from closed to open. The pressurized beverage can 2 discharges the mixture of beverage and nitrogen from the third port 23, through the control switch 7 to the mixer 4, i.e., along... Figure 4The green pipe in the middle releases a nitrogen-containing beverage; at the same time, valve switch 8 changes from closed to open, and while the outlet 32 of the air pump 3 continuously inflates the beverage can 2, the gas also passes through valve switch 8 to the second one-way valve 12 and then to the mixer 4, that is, along... Figure 4 The blue pipe in the middle introduces air into the mixer 4. The mixer 4 mixes the beverage containing nitrogen in the beverage tank 2 with the nitrogen delivered by the air pump 3, producing a rich and dense foam beverage that falls into the user's beverage cup 13, thus completing the beverage preparation.
[0061] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.
Claims
1. A beverage machine, characterized in that, include: Beverage extraction tank (1), which contains beverages; The beverage can (2) has a first interface (21) at its top connected to the beverage extraction tank (1) via a first pipe (14); An air pump (3) has its air inlet (31) connected to the second interface (22) on the top of the beverage can (2) via a second pipe (15). The air pump (3) is used to draw gas from the beverage can (2) through the second pipe (15) to create a negative pressure inside the beverage can (2) so as to draw the beverage from the beverage extraction can (1) into the beverage can (2). The air outlet (32) of the air pump (3) is connected to the second interface (22) of the beverage can (2) via a third pipe (16). When the beverage in the beverage can (2) reaches a preset liquid level, the air pump (3) is used to pressurize the beverage can (2) through the third pipe (16) so that the pressure inside the beverage can (2) reaches a preset pressure. The mixer (4) is connected to the third interface (23) at the bottom of the beverage can (2) via the fourth pipe (17) so that when the pressure in the beverage can (2) reaches the preset pressure, the beverage in the beverage can (2) enters the mixer (4) through the fourth pipe (17); the mixer (4) is also connected to the air pump (3) via the fifth pipe (18) so that the air pump (3) supplies air to the mixer (4), and the gas mixes with the beverage from the beverage can (2) in the mixer (4) and is discharged from the outlet (41) of the mixer (4).
2. The beverage machine according to claim 1, characterized in that, The second pipeline (15) is equipped with a first solenoid valve (5); The beverage can (2) is equipped with a liquid level sensor (20) for monitoring the liquid level inside the beverage can (2). When the liquid level inside the beverage can (2) reaches the preset liquid level, the liquid level sensor (20) controls the first solenoid valve (5) to cut off the second pipeline (15) so that the air pump (3) stops pumping air from the beverage can (2).
3. The beverage machine according to claim 2, characterized in that, The third pipeline (16) is equipped with a second solenoid valve (6); when the liquid level in the beverage can (2) reaches the preset liquid level, the liquid level sensor (20) controls the second solenoid valve (6) to open the third pipeline (16) so that the air pump (3) can fill the beverage can (2) with air.
4. The beverage machine according to claim 3, characterized in that, A control switch (7) is provided on the fourth pipeline (17); The beverage can (2) is equipped with a pressure sensor (24) for monitoring the pressure inside the beverage can (2). When the pressure inside the beverage can (2) reaches the preset pressure, the pressure sensor (24) controls the control switch (7) to open, so as to connect the fourth pipeline (17) and allow the beverage in the beverage can (2) to enter the mixer (4) through the fourth pipeline (17).
5. The beverage machine according to claim 3, characterized in that, Both the first solenoid valve (5) and the second solenoid valve (6) are three-way solenoid valves. The first port and the second port of the first solenoid valve (5) are connected in series on the second pipeline (15), and the first port and the second port of the second solenoid valve (6) are connected in series on the third pipeline (16). The beverage machine also includes a sixth pipe (19), one end of which is connected to the third port of the first solenoid valve (5), and the other end of which is connected to the third port of the second solenoid valve (6). The sixth pipe (19) is provided with an air hole that communicates with the outside atmosphere. When the air pump (3) draws air from the beverage can (2) through the air inlet (31) and the second pipeline (15), the first solenoid valve (5) is in a state where its first port and its second port are connected, and its third port is simultaneously disconnected from its first port and its second port; the second solenoid valve (6) is in a state where its first port and its third port are connected, and its second port is simultaneously disconnected from its first port and its third port; the gas discharged from the air outlet (32) of the air pump (3) enters the sixth pipeline (19) through the second solenoid valve (6) and is discharged outward through the air hole.
6. The beverage machine according to claim 5, characterized in that, When the air pump (3) inflates the beverage can (2) through the air outlet (32) and the third pipeline (16), the first solenoid valve (5) is in a state where its first port and its third port are connected, and its second port is simultaneously disconnected from its first port and its third port; the second solenoid valve (6) is in a state where its first port and its second port are connected, and its third port is simultaneously disconnected from its first port and its second port; the air inlet (31) of the air pump (3) is connected to the air hole on the first solenoid valve (5) and the sixth pipeline (19) to draw in the outside atmosphere.
7. The beverage machine according to claim 5, characterized in that, The sixth pipeline (19) is provided with a silencer box (9), and the silencer box (9) is provided with an air hole that communicates with the outside atmosphere.
8. The beverage machine according to claim 1, characterized in that, The first pipeline (14) is equipped with a filter (10) and a first check valve (11). In the direction of beverage flow, the filter (10) is located upstream of the first check valve (11).
9. The beverage machine according to claim 1, characterized in that, The fifth pipeline (18) is equipped with a valve switch (8) and a second check valve (12). In the direction of gas flow, the valve switch (8) is located upstream of the second check valve (12).
10. The beverage machine according to claim 1, characterized in that, The beverage can (2) is provided with a cooling element (25) on its outer peripheral wall.