Blending device and beverage machine

Abstract

The utility model discloses a kind of mixing device and beverage machine, wherein mixing device, used as the device of powder and water mixing in beverage machine, the mixing device includes: mixing bin, for the bottom bucket body with upper mouth, and bin wall is equipped with the water inlet pipe joint for connecting the water supply device of beverage machine, bin wall bottom or bin bottom is equipped with liquid outlet;Liquid level detection device, configured at the water supply device, to provide the detection data of predetermined minimum water level.Mixing device according to the utility model is not easy to make powder consolidation.

Description

Technical Field

[0001] This utility model relates to a device for mixing powder and water in a beverage machine, and also to a beverage machine equipped with the device. Background Technology

[0002] It should be understood that, regardless of the type of beverage machine, the mixing chamber in its mixing device for mixing powder and water is located inside the machine's casing. Furthermore, beverage machines often perform multiple mixing cycles after the initial mixing. During this process, the beverage residue in the mixing chamber is affected by wetting and boundary effects, preventing complete removal. Although some implementations use superhydrophobic coatings on the inner surface of the mixing chamber to reduce these effects, some beverage residue may still remain inside.

[0003] It should also be understood that the process of preparing beverages using powder and water is often to add the powder first, followed by water. This process is beneficial for the mixing of the powder. If water is added first and then the powder is added, the powder tends to float on the surface and quickly clump together, affecting subsequent mixing. This also indicates that food-grade powders tend to absorb water relatively quickly. Even when adding the powder first and then the water, the powder will rapidly absorb the residual moisture in the mixing chamber, then form clumps or a paste-like consistency. In many cases, these clumps are coated with a water-powder mixture on the surface, with dry powder or moisture-absorbing powder inside, thus affecting mixing after the water is added.

[0004] Therefore, it is evident that both adding ingredients first and then adding water can lead to powder clumping. However, beverage machines generally use the method of adding ingredients first and then water. The current focus should be on the potential problems associated with adding ingredients first and then water. The inventor, with over twenty years of experience in the beverage machine industry, has in-depth research on ingredient addition. Adding ingredients later cannot effectively utilize the impact of the water flow. Even with a forced stirring device in the mixing chamber, uneven mixing of water and powder or powder clumping may occur, which is why beverage machines currently generally use the method of adding ingredients first and then water. However, the inventor also discovered a more serious problem with this method: sufficient water is required before adding water. If there is no water or insufficient water, the beverage machine may not be able to start stirring or allow drainage. If the water supply problem cannot be resolved relatively quickly, it may cause highly concentrated beverages to precipitate and solidify, or powder with only a small amount of residual water to solidify. This problem can even block the drainage port of the mixing chamber. As mentioned earlier, the mixing chamber is often located inside the beverage machine, and users usually cannot open it for cleaning directly. They usually clean it using a water supply device. Although the problem of powder caking due to lack of water is rare, it is often difficult for ordinary users to solve it themselves once it occurs.

[0005] It should be noted that the above background technology is technical information that the inventor has acquired in order to deduce the relevant technical problems or obtained in the process of designing this utility model. It does not mean that the above background technology was already prior art before this utility model application, especially the technical content of cognition and confirmation of the relevant technical problems, such as the aforementioned research content on water supply in two stages. Utility Model Content

[0006] In view of this, one object of the present invention is to provide a mixing device that does not easily cause powder to clump, and another object of the present invention is to provide a beverage machine equipped with the mixing device.

[0007] According to a first aspect of the present invention, a mixing device is provided for use as a device for mixing powder and water in a beverage machine, the mixing device comprising: The mixing chamber is a bottomed container with an upper opening, and the chamber wall is equipped with a water inlet pipe connector for connecting to the water supply device of the beverage machine. The bottom of the chamber wall or the bottom of the chamber is equipped with a liquid outlet. A liquid level detection device is configured at the water supply device to provide detection data of a predetermined minimum water level.

[0008] Optionally, the inlet pipe connector is offset on one side of the mixing chamber's mid-plane passing through the axis; or The water inlet pipe connector has multiple outlets.

[0009] Optionally, the mixing chamber includes a conical bottom, and the liquid outlet is either vertically or horizontally connected; If the liquid outlet is vertically inserted, the liquid outlet is located at the bottom end of the cone-shaped bottom; When the outlet is connected horizontally, the lower edge of the outlet is flush with the inner bottom edge of the cone.

[0010] Optionally, a stirrer is provided inside the mixing chamber.

[0011] Optionally, the mixing device further includes a steam hood with a feed inlet in the vertical direction, which covers the upper opening of the mixing chamber; The side of the steam hood is equipped with an exhaust port; Accordingly, the mixing device further includes a pumping device connected to the pumping port to extract steam.

[0012] Optionally, the steam hood is a double-layered steam hood with inner and outer nesting, and a steam collection channel is formed between the inner and outer steam hoods; Correspondingly, the inner and outer steam hoods are sealed at the top and sealed or open at the bottom. When the bottom is also sealed, the inner steam hood has ventilation holes.

[0013] Optionally, the inner steam hood is a conical structure that gradually narrows downwards; If the inner steam hood has a vent, the vent is only located on the side of the inner steam hood opposite to the exhaust port.

[0014] Optionally, the lower end of the inner steam hood is connected to a cylindrical inner sleeve, the inner diameter of which is the same as the lower port diameter of the inner steam hood, and the outer diameter of which is less than or equal to the upper port diameter of the mixing chamber.

[0015] Optionally, the steam hood and the mixing chamber are connected by a flange, a snap-fit, or a threaded connection.

[0016] According to a second aspect of the present invention, a beverage machine is provided, including the mixing device described in the first aspect of the present invention, and the beverage machine includes a control element or control circuit, an alarm device or control circuit output connected to the control element or control circuit, and an input connected to the liquid level detection device.

[0017] In an embodiment of this utility model, a liquid level detection device is provided at the water supply device to detect the minimum water level, so as to ensure that there is enough water after the mixing device feeds the material to meet the preparation of the beverage, thereby avoiding the powder solidification or sedimentation caused by insufficient water or excessive concentration after precipitation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a beverage machine in one embodiment, with the control panel omitted.

[0019] Figure 2 This is a schematic diagram showing the positional relationship between the mixing chamber equipped with a steam hood inside the feeder and the feeding mechanism and exhaust hood shell in one embodiment.

[0020] Figure 3 This is a schematic diagram of the assembly state of the steam hood and mixing chamber in one embodiment.

[0021] Figure 4 This is a schematic diagram of the first structure of the mixing chamber in one embodiment.

[0022] Figure 5 This is a schematic diagram of the second structure of the mixing chamber in one embodiment.

[0023] Figure 6 This is a schematic diagram of the first structure of the steam hood in one embodiment.

[0024] Figure 7 This is a schematic diagram of the second structure of the steam hood in one embodiment.

[0025] Figure 8 This is a schematic diagram of the exhaust hood structure in one embodiment.

[0026] In the diagram: 1. Tray, 2. Drinking area, 3. Control panel installation area, 4. Knob, 5. Housing, 6. Bottle holder, 7. Powder bottle, 8. Maintenance port, 9. Sealing cap, 10. Exhaust fan, 11. Feeding mechanism, 12. Mixing chamber, 13. Steam hood, 14. Exhaust hood shell, 15. Ear plate, 16. Conical bottom, 17. Liquid inlet pipe connector, 18. Positioning sleeve, 19. Outer cover, 20. Inner cover, 21. Suction port, 22. Steam exhaust pipe head, 23. Chamber body, 24. Drain port, 25. Stirring paddle, 26. Slot, 27. Stop, 28. Sealing ridge, 29. Feed inlet, 30. Tongue, 31. Inner cover sleeve, 32. Screw seat, 33. Rectangular flange, 34. Cavity shell, 35. Air inlet pipe connector. Detailed Implementation

[0027] It should be understood that water dispensers, for example, are generally equipped with a water-out alarm, but this alarm is mainly indicated by an indicator light, which indicates that there is no water. There is usually no alarm for low liquid levels. The same situation exists for beverage machines such as fruit juice machines and coffee machines, which generally use the absence of water as the alarm condition. In other words, their corresponding liquid level detection settings are usually too low, often failing to trigger a low liquid level alarm. This leads to the problems described in the background section, resulting in no water or insufficient water after dispensing.

[0028] This embodiment of the invention focuses on describing the mixing device including the mixing chamber 12, and the adapted liquid level detection device is a related component. Other parts of the beverage machine that are unrelated to this embodiment will not be described further.

[0029] In the embodiments of this utility model, terms such as up, down, left, right, inside, outside, front, back, etc., and similar expressions are for illustrative and explanatory purposes only and are not intended to be specific or limiting.

[0030] Similarly, statements that are mutually explanatory, such as vertical or horizontal, are also for the purpose of explanation or clarification.

[0031] In addition, to facilitate the description of the relationship between one component or component and another component or component shown in the accompanying drawings, spatially relative terms such as "lower," "upper," and similar terms may be used in embodiments of this invention. It should be understood that the spatially relative terms are intended to cover different orientations of the device during use and operation, in addition to those depicted in the accompanying drawings.

[0032] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0033] Furthermore, as a special note, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] It should be understood that in the field of mechanics, standard geometric terms are typically used to describe approximate mechanical structures, without implying that the mechanical mechanism possesses the exact geometric characteristics corresponding to those terms. For example, the bolt head of a hexagonal head bolt is actually a hexagonal prism, and the ends of the bolt head are rounded.

[0035] It should also be understood that the mixing device is a component of the beverage machine, but not the entirety of it. Therefore, the function or effect of the beverage machine is not achieved solely by the mixing device. For example, the liquid level detection device, as a component of the mixing device, is also a component of the beverage machine. The liquid level detection device needs to transmit detection information to, for example, a controller, microcontroller, control circuit, or other control elements. However, for the mixing device alone, configuring a separate control element is not necessary. It should be noted that, as a part of the beverage machine, but not the entirety, the mixing device provides necessary conditions, not sufficient and necessary conditions. For example, adjusting or setting the liquid level detection device makes the relevant technical effect predictable, regardless of whether the liquid level detection device has a control element.

[0036] The central component of the mixing device is the mixing chamber 12. Beverage machines are generally equipped with a feeding mechanism 11 or can be manually fed, and are correspondingly equipped with a water supply device. For some beverage machines, both feeding and powder feeding can be machine controlled, while for others, feeding and water supply can be manually controlled.

[0037] In this field, the term "feeding powder" can also be referred to as "powdering" or "feeding".

[0038] See Figure 4 and Figure 5 The illustrated mixing chamber 12 has a basic structure consisting of walls and a bottom plate, generally resembling a bottomed barrel with an opening at the top. In some implementations, the mixing chamber 12 is also referred to as a stirring vessel. A mixing chamber 12 referred to as a stirring vessel typically includes a forced stirring device, such as... Figure 4 The stirring paddle 25 shown in the figure can be used simultaneously with the hydraulic mixing method in the embodiments of this utility model, or only one of them can be used.

[0039] It should be noted that while hydraulic power can achieve the mixing of powder and water, this does not mean that aimlessly using hydraulic power to achieve mixing is the specific means of mixing. It should be understood that even with the use of hydraulic power and forced stirring, it is clear that relying solely on hydraulic power is insufficient to achieve the intended mixing effect. In most situations, the primary purpose of hydraulic power is to supply water, not to use hydraulic power to mix powder and water, and it certainly does not mean that mixing can be achieved solely by relying on hydraulic power.

[0040] exist Figure 3 and Figure 4 In the illustrated structure, as mentioned above, the mixing chamber 12 is a bottomed barrel with an upper opening. For the sake of simplicity, the surrounding walls of the mixing chamber 12 are referred to as the chamber walls, and the bottom plate is referred to as the chamber bottom.

[0041] The container wall is equipped with a water inlet pipe connector for connecting to the water supply device of the beverage machine, as shown in the figure, the liquid inlet pipe connector 17. It is generally connected to, for example, the water tank built into the beverage machine, the water bucket it holds, or other external water sources through a pipe.

[0042] Water supply can be achieved through forced water pumping or by gravity, such as by placing a water bucket upside down above the mixing chamber and using gravity to supply water.

[0043] Whether it's forced water supply or gravity-based water supply, a solenoid valve can be installed on the corresponding water supply pipeline to control the water supply volume electronically.

[0044] Regarding the water supply, in some implementations, a fixed amount of water can be supplied each time. Since the volume of the mixing chamber 12 is fixed, the maximum allowable water supply each time is also fixed. For example, in a coffee machine, the amount of coffee prepared each time is often fixed. Therefore, for example, the solenoid valve can use a delayed closing method to supply a certain amount of water.

[0045] In some implementations, an independent liquid level sensor can be installed in the mixing chamber 12 to facilitate the control of the water supply to the mixing chamber 12 using a closed-loop control method.

[0046] Even when using a fixed-volume water supply method, multiple water supply volumes can be used, such as different speed settings or multiple water supply modes. For example, speed setting 1 supplies 50ml of water per cycle, speed setting 2 supplies 75ml of water per cycle. Water supply can be controlled by, for example, the solenoid valve mentioned above, using a delayed closing method. Different water supply volumes can be achieved by controlling the water supply time.

[0047] Since the water supply method is not part of the improvements made in this utility model, the above description is only used to illustrate that there is often a definite relationship between the powder and the water supply when mixing powder and a fixed amount of water, in order to meet users' requirements for different flavors. Because the method of adding the powder first and then supplying water is adopted, if there is a problem in the water supply process, it is easy to cause insufficient water supply, resulting in an excessively concentrated beverage. Or, when the water supply is relatively small, the powder will become a paste. If the predetermined amount of water cannot be replenished in a relatively short time, the paste-like powder will easily become more viscous or solidify, making it difficult to clean later.

[0048] In this embodiment of the invention, the liquid level detection device is associated with the mixing chamber 12. The liquid level detection is no longer the traditional anhydrous detection, but a low liquid level detection, which needs to ensure that the water supply is not less than, for example, 150 ml, to ensure the stability of the water supply. The corresponding low liquid level detection is mainly used to ensure that the mixing chamber mixes at least the required basic water supply, and the low liquid level is not lower than the liquid level corresponding to the basic water supply.

[0049] To ensure water supply stability, the low liquid level generally needs to be no lower than the liquid level corresponding to a volume of at least twice the basic water supply. It should generally not exceed the liquid level corresponding to a volume of at least five times the basic water supply.

[0050] Regarding the liquid level detection device, in the embodiments of this utility model, it is only used for low liquid level detection. Therefore, almost all liquid level sensors can be used. In the embodiments of this utility model, contact liquid level sensors are mainly used, such as float-type liquid level sensors and capacitive liquid level sensors. Non-contact liquid level sensors, such as ultrasonic liquid level sensors, can also be used. As mentioned above, contact liquid level sensors are preferred.

[0051] Additionally, as a necessary configuration, a liquid outlet is provided at the bottom of the wall or bottom of the mixing chamber 12, such as... Figure 3 and Figure 4 The drain port 24 shown can be pre-fitted with a drain pipe connector to facilitate connection with, for example... Figure 1 The water inlet corresponding to the middle drinking area 2 is connected, and a manual valve or an electrically controlled valve can be installed on the connected pipeline. As mentioned above, since the embodiments of this utility model focus on the configuration of the mixing device, the other configurations of the beverage machine, such as the aforementioned content regarding the drinking area 2, will not be described in detail here.

[0052] It should be noted that current water supply devices are also generally equipped with liquid level detection devices. The difference between them and the embodiments of this utility model has been mentioned above. The main difference is the location of the device. Currently, it is mainly used for waterless detection and for compatibility with the mixing chamber 12. Apart from that, the basic configuration is the same as that of this utility model. Under these conditions, except for the location of the device, the control method and other configurations can be adopted from the existing technology. They will not be described again here.

[0053] When using hydraulic mixing, it can be achieved through a purely mechanical structure. Specifically, the inlet pipe connector is offset on one side of the mid-plane of the mixing chamber 12, passing through the axis. Correspondingly, as... Figure 4 As shown, Figure 4 When the inlet pipe connector 17 is aligned with the axis of the mixing chamber 12, it is in the upright position. When the inlet pipe connector is offset, the water supply will generate a vortex in the mixing chamber 12, which is beneficial to the mixing of powder.

[0054] In a more preferred embodiment, the inlet pipe 17 is connected to the mixing chamber via a cut-in method; the outer generatrix of the inner cavity of the inlet pipe constitutes... Figure 3 and Figure 4 Tangent to the inner cavity of the middle compartment 23. With the compartment 23 as a reference, the outer generatrix is ​​the centrifugal side generatrix with the compartment 23 as a reference.

[0055] In some embodiments, the water inlet connector has multiple outlets, and the multiple outlets generate turbulence, which disperses and mixes the powder.

[0056] In some embodiments, since water is forced to flow using a water pump, the hydraulic force is often greater than that of water supplied by gravity. When water is forced to flow using a water pump, it provides a better basis for using hydraulic force to flush the water evenly.

[0057] In some other embodiments, such as Figure 4 As shown, a stirring paddle 25 can also be provided for forced stirring, and the stirring shaft of the stirring paddle 25 is connected to, for example, Figure 3 The liquid-sealed inlet hole provided on the cone bottom 16 shown allows the installation of, for example, a 12V or 24V DC motor driving the agitator 25 on the lower side of the mixing chamber 12.

[0058] exist Figure 3 and Figure 5 In the illustrated structure, the mixing chamber 12 includes a conical bottom, such as the conical bottom 16 shown in the figure, to facilitate the drainage of liquid within the mixing chamber.

[0059] Accordingly, the liquid outlet can be vertically or horizontally connected. It should be noted that, for the example of vertically connected liquid outlet, the cone bottom 16 can be a circular cone bottom or a slanted circular cone bottom. The latter mainly considers the problem of conflict between the position of the stirring paddle 25 and the liquid outlet when the stirring paddle 25 is set. That is, if the stirring paddle 25 is set at the same time in these embodiments, the cone bottom 16 adopts a slanted circular cone bottom to solve the problem of interference between the position of the liquid outlet and the stirring shaft of the stirring paddle 25.

[0060] Correspondingly, if the liquid outlet is vertically connected, the liquid outlet is located at the bottom of the cone; while if the liquid outlet is horizontally connected, the lower edge of the liquid outlet is flush with the inner bottom edge of the cone.

[0061] Figure 4 In this case, since a stirring paddle 25 is also provided, the horizontal discharge of the liquid outlet can effectively avoid positional interference with the stirring paddle 25.

[0062] exist Figure 2In the illustrated structure, two feeding mechanisms are provided above the mixing chamber 12. The material fed is powder. The powder absorbs moisture, which will affect the feeding effect. For example, the powder that has absorbed moisture will stick to the inside of the feeding mechanism, such as the rotating scoop. Therefore, in a more preferred embodiment, the mixing device also includes a steam hood 13 with an inlet in the vertical direction. The steam hood 13 covers the upper opening of the mixing chamber 12, and the powder is fed in through the inlet.

[0063] Furthermore, an exhaust port is provided on the side of the steam hood 13, in Figure 6 and Figure 7 In the illustrated structure, a steam exhaust pipe connector 22 is connected to the exhaust port to connect to, for example, an exhaust fan via, for example, a duct.

[0064] exist Figure 8 The illustrated structure includes an exhaust shroud 14 located inside the beverage machine housing, while a fan, for example, is located outside the beverage machine. The two are connected by screws using the beverage machine housing as the mounting base. The housing has corresponding base holes, and corresponding screw holes are distributed around the base holes to facilitate the assembly of the exhaust shroud 14 and the exhaust fan.

[0065] The air inlet pipe 35 of the exhaust hood 14 is connected to the steam exhaust pipe connector 22 via an air duct.

[0066] The exhaust fans mainly use axial flow fan assemblies, which are generally pre-made parts, and have features such as Figure 1 The exhaust vent 10 shown can be directly installed on the beverage machine housing.

[0067] In some embodiments, the exhaust hood 14 can be a single-layer hood or a double-layer hood. In a preferred embodiment, a double-layer hood is used to form a double-layer steam hood. Under this condition, the exhaust hood 14 has an inner hood 20 and an outer hood 19 nested inside and outside, such as an inner hood 20 and an outer hood 19. The inner hood 20 is the inner steam hood, and the outer hood 19 is the outer steam hood. Figure 7 As shown, a steam collection channel is formed between the inner cover 20 and the outer cover 19.

[0068] Accordingly, the inner and outer steam hoods are sealed at the upper end and can also be sealed at the lower end. However, in a more preferred embodiment, the inner and outer steam hoods are left open at the lower end. In this case, the open confluence channel at the lower end is at least partially covered at the upper opening in some embodiments for direct steam absorption.

[0069] If the inner and outer steam hoods are also sealed at the bottom, the inner steam hood needs to have ventilation holes, such as... Figure 7 The suction port 21 shown is obviously located on the wall of the feed inlet 29, which is provided by the inner steam hood.

[0070] Furthermore, the inner steam hood is a tapered structure that gradually narrows downwards, forming a funnel structure to facilitate the falling of powder into the mixing chamber 12. The outer steam hood, on the other hand, adopts a cylindrical structure. Under these conditions, the cross-section of the reflux channel formed between the inner and outer hoods is a wedge shape, smaller at the top and larger at the bottom.

[0071] And in Figure 6 and Figure 7 In the illustrated structure, when the inner steam hood has an air intake hole 21, the air intake hole 21 is only opened on the side of the inner hood 20 opposite to the side where the steam exhaust pipe joint 22 is located in the figure, so as to reduce the amount of powder leaking into the manifold.

[0072] exist Figure 6 and Figure 7 In the illustrated structure, the lower end of the inner steam hood is connected to a cylindrical inner hood sleeve 31. The inner diameter of the inner hood sleeve 31 is the same as the lower port diameter of the inner steam hood, and the outer diameter of the inner hood sleeve 31 is less than or equal to the upper port diameter of the mixing chamber 12. Under this condition, the projection of part of the return channel at the upper port falls inside the upper port, so that the confluence channel can be directly connected to the upper port.

[0073] The steam hood 13 and the mixing chamber 12 can be connected by a flange, or by a snap-fit ​​or threaded connection. Figure 7 In the illustrated structure, the bottom edge of the outer cover 19 is provided with two latches 30, while... Figure 5 In the illustrated structure, the upper inner side of the mixing chamber 12 is provided with a corresponding fastening groove 26. Since the steam hood 13 is mainly made of food-grade plastic material, it has a certain elasticity. The fastening groove 26 and the fastening tongue 30 are fastened by means of this elasticity.

[0074] Flange connections and screw connections are relatively common and will not be discussed further here.

[0075] In addition, Figure 5 In the illustrated structure, there is a stop 27 at the upper opening of the mixing chamber 12, which is a step formed by the connection between the positioning sleeve 18 with a relatively large diameter and the chamber body 23. The outer diameter of the outer cover 19 is larger than the inner diameter of the chamber body 23 of the mixing chamber 12 and smaller than or equal to the inner diameter of the positioning sleeve 18, so that it can be supported on the stop 27 to achieve positioning.

[0076] As mentioned above, the focus of this utility model embodiment is on the improvement of the mixing device, while other parts of the beverage machine can be adapted. Even if the beverage machine is equipped with a controller, it is usually connected to a liquid level detection device. Although the usage is different from that in this utility model embodiment, the control method is basically the same, and will not be described again here.

[0077] It should be noted that, due to the small number of control points, some embodiments do not require control elements and only require control circuits, which can be implemented using traditional relay contact systems. This is common knowledge in the field and will not be elaborated further here.

[0078] The above description is illustrative in conjunction with the accompanying drawings and is not intended to limit the invention. Within the framework of this invention, the above embodiments or different embodiments can be combined without conflict. Although the invention has been described in detail in the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this invention.

Claims

1. A mixing device for mixing powder and water in a beverage machine, characterized in that, The mixing device includes: The mixing chamber is a bottomed container with an upper opening, and the chamber wall is equipped with a water inlet pipe connector for connecting to the water supply device of the beverage machine. The bottom of the chamber wall or the bottom of the chamber is equipped with a liquid outlet. A liquid level detection device is configured at the water supply device to provide detection data of a predetermined minimum water level.

2. The mixing device according to claim 1, characterized in that, The inlet pipe connector is offset on one side of the mixing chamber across the axis; or The water inlet pipe connector has multiple outlets.

3. The mixing device according to claim 1, characterized in that, The mixing chamber includes a conical bottom, and the liquid outlet can be vertically or horizontally connected; If the liquid outlet is vertically inserted, the liquid outlet is located at the bottom end of the cone-shaped bottom; When the outlet is connected horizontally, the lower edge of the outlet is flush with the inner bottom edge of the cone.

4. The mixing apparatus according to any one of claims 1 to 3, characterized in that, The mixing chamber is equipped with a stirrer.

5. The mixing apparatus according to claim 1, characterized in that, The mixing device also includes a steam hood with a feed inlet in the vertical direction, which covers the upper opening of the mixing chamber. The side of the steam hood is equipped with an exhaust port; Accordingly, the mixing device further includes a pumping device connected to the pumping port to extract steam.

6. The mixing apparatus according to claim 5, characterized in that, The steam hood is a double-layered steam hood with inner and outer nesting, and a steam collection channel is formed between the inner and outer steam hoods. Correspondingly, the inner and outer steam hoods are sealed at the top and sealed or open at the bottom. When the bottom is also sealed, the inner steam hood has ventilation holes.

7. The mixing apparatus according to claim 6, characterized in that, The inner steam hood is a conical structure that gradually narrows downwards; If the inner steam hood has a vent, the vent is only located on the side of the inner steam hood opposite to the exhaust port.

8. The mixing apparatus according to claim 6, characterized in that, The lower end of the inner steam hood is connected to a cylindrical inner sleeve. The inner diameter of the inner sleeve is the same as the lower port diameter of the inner steam hood, and the outer diameter of the inner sleeve is less than or equal to the upper port diameter of the mixing chamber.

9. The mixing apparatus according to claim 5, characterized in that, The steam hood and the mixing chamber are connected by a flange, a snap-fit, or a threaded connection.

10. A beverage machine, characterized in that, The beverage machine includes the mixing device according to any one of claims 1 to 9, and includes a control element or control circuit, an alarm device or control circuit connected to the output of the control element or control circuit, and an input connected to the liquid level detection device.

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