A beer machine

Abstract

The utility model provides a kind of beer machine, belong to liquor beverage drinking equipment technical field.It solves the problem of the bottom of the water tank of the prior art beer machine is easy to freeze.This beer machine, including machine body, and the water tank, motor and stirring vane being all arranged in machine body, the bottom of the water tank is rotatably connected with driven wheel and driven wheel is located in the inner chamber of water tank, the stirring vane is fixed on driven wheel, the motor is located in the inner chamber of water tank and is fixed in the bottom of water tank, motor shaft is connected with driving wheel, the driving wheel is opposite with the driven wheel and driving wheel can drive driven wheel to rotate by magnetism, the top of the driving wheel and the bottom of water tank have gap one, the top of the driving wheel has the top pin of convex and taper, the bottom of the water tank is provided with taper recess, the top pin is embedded in the recess, the taper of the top pin is less than the taper of recess.Solve the advantage that the bottom of the water tank of the prior art beer machine is easy to freeze.

Description

Technical Field

[0001] This utility model belongs to the technical field of beverage drinking equipment, and relates to a beer machine. Background Technology

[0002] With the progress of the times and the improvement of people's living standards, people have higher requirements for drinking alcohol. Canned and bottled beer can no longer meet people's drinking needs. More and more people hope to drink fresh, hygienic, and delicious draft beer. A beer machine is a device used to cool beverages. In order to obtain a better taste, existing beer machines are equipped with a cooling system for cooling the beer. The conventional one is a water-cooling structure. That is, the beer machine is equipped with a water tank. The water tank has spirally wound cooling pipes and beer dispensing pipes. The water in the tank is cooled through the cooling pipes. The cooled water exchanges heat with the beer dispensing pipes to cool the beer in the dispensing pipes. In order to prevent the water in the tank from freezing, existing beer machines also have a stirring motor. The motor shaft is connected to a stirring blade. Since the motor shaft and stirring blades need to pass through the water tank, in existing beer machines, the motor is fixed to the top of the water tank.

[0003] For example, Chinese patent application (application number: 201621113701.7) discloses a water-cooled draft beer machine, including a housing. The housing contains a refrigeration circuit including a compressor, a condenser, and refrigeration pipes. A water tank is located within the housing, and the refrigeration pipes are coiled within the water tank. The housing also has a refrigeration chamber for holding beer kegs and a dispensing pipe for connecting to the kegs. A dispensing tap is connected to the outside of the housing. The dispensing pipe is coiled within the water tank, and its dispensing section is connected to the dispensing tap. A stirring motor is fixed to the top of the water tank, with its motor shaft extending into the water tank and its extended end fixedly connected to stirring blades. In this draft beer machine, both the refrigeration pipes and the dispensing pipe are coiled within the water tank. The refrigeration pipes cool the water stored in the tank. Beer exchanges heat with the water in the tank through the dispensing pipe, thus cooling the beer. The stirring motor drives the stirring blades to rotate, stirring the water stored in the tank to prevent it from freezing.

[0004] When a draft beer machine is in use, to ensure the beer is adequately cooled, the beer in the keg flows downwards along the spiral path of the dispensing pipe in the water tank, exchanging heat with the cooling water in the tank. Since the beer is relatively hot when it first enters the water tank, over time, the temperature at the top of the tank becomes relatively higher than the temperature at the bottom. Therefore, the bottom of the tank is more prone to freezing than the top. In the draft beer machine mentioned above, due to the limitation of the motor shaft, the agitator blades are located in the upper middle part of the water tank, resulting in a significantly poor agitation effect on the bottom of the tank. This causes the cooling water at the bottom of the tank to freeze easily, which may cause the beer in the dispensing pipe passing through the bottom of the tank to also freeze, affecting the dispensing of beer. Summary of the Invention

[0005] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a beer machine. The technical problem this utility model aims to solve is: how to solve the problem of ice easily forming at the bottom of the water tank in existing beer machines.

[0006] The objective of this utility model can be achieved through the following technical solution: A beer brewing machine includes a body, a water tank, a motor, and a stirring blade, all disposed within the body. The water tank has a driven wheel rotatably connected to its bottom, and the driven wheel is located within the inner cavity of the water tank. The stirring blade is fixed to the driven wheel. The motor is located outside the inner cavity of the water tank and fixed to its bottom. A driving wheel is connected to the motor shaft. The driving wheel is opposite to the driven wheel, and the driving wheel can magnetically drive the driven wheel to rotate. There is a gap between the top of the driving wheel and the bottom of the water tank. The top of the driving wheel has a protruding, conical tip. The bottom of the water tank has a conical groove, and the tip is embedded in the groove. The taper of the tip is smaller than the taper of the groove.

[0007] The magnetic levitation drive structure includes a motor, a driving wheel, and a driven wheel. The motor drives the driving wheel to rotate, and the driving wheel drives the driven wheel to rotate via magnetic force. However, in the conventional understanding of the art, the magnetic levitation drive structure has a fatal flaw: due to limitations in manufacturing precision and installation, the motor shaft itself will have a certain amount of radial wobble during rotation. After the driving wheel is installed, there will be a certain gap between it and the motor shaft, causing radial wobble between them. This results in an unstable magnetic field between the driving wheel and the driven wheel, leading to oscillations. If this drive structure is applied to the water tank agitator of a beer machine, it will affect the stability and efficiency of the agitation blades. Therefore, those skilled in the art generally do not use this drive structure in beer machines, which is also a technical bias in the field. This application overcomes the aforementioned technical bias by applying the magnetic levitation drive structure to the water tank stirring mechanism of a beer machine. Furthermore, through innovative improvements, the motor is mounted on the outer bottom wall of the water tank, with a driving wheel connected to the motor shaft. The driven wheel is rotatably connected to the inner bottom wall of the water tank, and the stirring blades are fixed to the driven wheel. A conical groove is formed at the bottom of the water tank, and a conical tip is formed at the top of the driving wheel, embedding itself in the groove. During operation, if the driving wheel experiences radial wobbling, the tip will abut against the inner wall of the groove, limiting the radial wobbling of the driving wheel and ensuring the magnetic field between the driving and driven wheels is maintained. The stability of the motor is achieved because the taper of the tip is smaller than that of the groove. When the tip and the inner wall of the groove come into contact, it is a point or line contact, which does not affect the rotation of the drive wheel. This effectively overcomes the problem of magnetic field instability and oscillation between the drive and driven wheels, as commonly understood. This allows the stirring blades to stably and efficiently stir the bottom of the tank, preventing ice formation and ensuring normal dispensing of alcohol while it cools. Furthermore, the stirring from the bottom creates an upward vortex within the tank, which in turn drives the flow of cooling water at the top, preventing it from freezing. Simultaneously, this structural design allows for a shorter motor shaft compared to conventional motors, resulting in a more compact structure. Moreover, the motor's location at the bottom of the tank, outside the tank itself, means the cooling water inside will not affect it, preventing corrosion and rust, extending its lifespan. The low temperature at the bottom of the tank also effectively dissipates heat from the motor, further preventing ice formation at the bottom.

[0008] In the aforementioned beer machine, there is a second gap between the top wall of the tip and the bottom wall of the groove, and the size of the second gap is smaller than the size of the first gap. This smaller gap ensures that the drive wheel can move radially while limiting its axial movement, preventing the drive wheel from contacting the bottom surface of the housing and affecting normal rotation.

[0009] In the aforementioned beer machine, the bottom of the water tank has a mounting cavity isolated from the inner cavity of the water tank, and both the motor and the drive wheel are housed within this mounting cavity. The isolation of the mounting cavity from the inner cavity of the water tank provides two functions: firstly, it serves to mount the motor and drive wheel, ensuring that the cooling water in the water tank has no impact on the motor, preventing corrosion and rust, and extending its service life; secondly, it acts as a cooling chamber, where the low-temperature environment effectively dissipates heat from the motor, and the heat dissipated by the motor further prevents ice formation at the bottom of the water tank.

[0010] In the aforementioned beer machine, the bottom wall of the water tank has an upwardly arched mounting portion one, and the bottom wall of the water tank also has a downwardly protruding cylindrical mounting portion two. The inner cavities of mounting portion one and mounting portion two are connected to form the aforementioned mounting cavity. The driving wheel is located inside mounting portion one, and the driven wheel is rotatably connected to the top of mounting portion one. The arrangement of mounting portion one and the mounting portion two provides sufficient mounting space for the motor and also facilitates the processing and shaping of the water tank. Furthermore, the protruding mounting portion one ensures that part of the outer wall of the mounting cavity is surrounded by cooling water from the water tank, accelerating heat exchange and effectively dissipating heat from the motor.

[0011] In the aforementioned beer machine, the top of the mounting part has a protruding, columnar connecting part. The driven wheel is rotatably connected to the connecting part via a bearing. A limiting gasket is also fixed to the top surface of the connecting part, and the outer diameter of the limiting gasket is larger than the outer diameter of the connecting part. The limiting gasket provides double limiting protection for the driven wheel, preventing it from detaching from the connecting part along with the bearing due to a large instantaneous water flow impact in extreme situations. Simultaneously, the limiting gasket, located above the driven wheel and the stirring blades, guides the water vortex generated by the stirring blades, increasing the diameter of the vortex to some extent. This better drives the flow of cooling water in the upper part of the water tank, preventing the cooling water in the upper part of the water tank from freezing.

[0012] Compared with existing technologies, this beer machine has the following advantages:

[0013] 1. The design of the tip and groove can limit the radial wobble of the drive wheel and ensure the stability of the magnetic field between the drive wheel and the driven wheel. Since the taper of the tip is smaller than that of the groove, after the tip and the inner wall of the groove come into contact, they are in point contact or line contact, which will not affect the rotation of the drive wheel. This allows the stirring blades to be driven to stir the bottom of the water tank stably and efficiently, preventing the bottom of the water tank from freezing and ensuring that the wine can be dispensed normally while cooling.

[0014] 2. The motor is located at the bottom of the water tank and outside the tank. The entire motor shaft can even be made shorter than that of existing conventional motors, making the whole structure more compact. Moreover, the cooling water in the water tank will not have any impact on the motor, making it less susceptible to corrosion and rust, and extending its service life. Furthermore, the low-temperature environment at the bottom of the water tank can effectively dissipate heat from the motor, and the heat dissipated by the motor can further prevent the bottom of the water tank from freezing.

[0015] 3. While limiting the axial movement of the driven wheel, the limiting gasket can also guide the water vortex generated by the stirring blades, which can increase the diameter of the water vortex to a certain extent, thereby better driving the flow of cooling water in the upper part of the water tank and preventing the cooling water in the upper part of the water tank from freezing. Attached Figure Description

[0016] Figure 1 This is a 3D structural diagram of the beer machine.

[0017] Figure 2 This is a cross-sectional view of the beer machine.

[0018] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 yes Figure 3 Enlarged view of point B in the middle.

[0020] Figure 5 This is a diagram showing the installation structure of the driven wheel and the stirring blades.

[0021] In the diagram, 1 is the machine body; 2 is the water tank; 2a is the mounting part one; 2a1 is the connecting part; 2b is the mounting part two; 2c is the groove; 2d is the mounting cavity; 3 is the motor; 4 is the stirring blade; 5 is the driving wheel; 5a is the center point; 6 is the driven wheel; 7 is the bearing; 8 is the limit gasket; 9 is the wine dispensing tap; 10 is the wine dispensing pipe; and 11 is the refrigeration pipe. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] like Figure 1 and 2As shown, this beer machine includes a body 1, inside which is a water tank 2, a motor 3, and a stirring blade 4. The body 1 has a placement cavity for placing beer kegs. The body 1 also has a refrigeration system including a compressor, a condenser, etc. The body 1 has a beer dispensing tap 9 on the outside. The water tank 2 has a beer dispensing pipe 10 and a refrigeration pipe 11 spirally wound from top to bottom. The refrigeration pipe 11 surrounds the beer dispensing pipe 10 or the beer dispensing pipe 10 surrounds the refrigeration pipe 11. The refrigeration pipe 11 is connected to the refrigeration system. One end of the beer dispensing pipe 10 is connected to the beer keg in the placement cavity, and the other end is connected to the beer dispensing tap 9.

[0024] Specifically, such as Figure 2-5 As shown, the water tank 2 is closed at the bottom and open at the top. The bottom wall of the water tank 2 has an upwardly arched mounting portion 2a in the middle, and a downwardly protruding cylindrical mounting portion 2b in the middle of the bottom wall. The inner cavities of mounting portion 2a and mounting portion 2b are connected to form a mounting cavity 2d that is isolated from the inner cavity of the water tank 2. The motor 3 is located in the mounting cavity 2d and fixed to the water tank 2. A cover plate that can close the mounting cavity 2d is also connected to the bottom of the water tank 2. A drive wheel 5 is connected to the motor shaft. The drive wheel 5 is located in the mounting portion 2a, and there is a gap between the top of the drive wheel 5 and the mounting portion 2a. The top of the mounting portion 2a has a protruding columnar connecting portion 2a1. A driven wheel 6 is rotatably connected to the connecting portion 2a1 via a bearing 7. The driven wheel 6 is located in the inner cavity of the water tank 2. The stirring blade 4 is fixed to the driven wheel 6. The drive wheel 5 is opposite to the driven wheel 6, and the drive wheel 5 can magnetically drive the driven wheel 6 to rotate. In this embodiment, a magnet is provided on the driving wheel 5, and a magnet is provided on the driven wheel 6. The magnets are magnetically attracted to each other. A limiting washer 8 is also fixed on the top surface of the connecting part 2a1. The outer diameter of the limiting washer 8 is larger than the outer diameter of the connecting part 2a1.

[0025] Furthermore, the top of the drive wheel 5 has a protruding, conical tip 5a, and a conical groove 2c is provided on the mounting part 2a. The tip 5a is embedded in the groove 2c. The taper of the tip 5a is smaller than the taper of the groove 2c. There is a gap 2 between the top wall of the tip 5a and the bottom wall of the groove 2c. The size of the gap 2 is smaller than the size of the gap 1.

[0026] In this application, the motor 3 is located at the bottom of the water tank 2 and outside the inner cavity of the water tank 2. The entire shaft of the motor 3 can even be set shorter than that of the existing conventional motor 3, making the whole structure more compact. The cooling water in the water tank 2 will not have any impact on the motor 3, making it less susceptible to corrosion and rust, and its service life is also longer. In addition, the low temperature environment at the bottom of the water tank 2 can effectively dissipate heat from the motor 3, and the heat emitted by the motor 3 can further prevent the bottom of the water tank 2 from freezing. Moreover, during operation, if the drive wheel 5 experiences radial wobbling, the tip 5a will abut against the inner wall of the groove 2c, limiting the radial wobbling of the drive wheel 5 and ensuring the stability of the magnetic field between the drive wheel 5 and the driven wheel 6. Since the taper of the tip 5a is smaller than that of the groove 2c, after the tip 5a abuts against the inner wall of the groove 2c, the two are in point contact or line contact, which will not affect the rotation of the drive wheel 5. This effectively overcomes the problem of oscillation caused by the unstable magnetic field between the drive wheel 5 and the driven wheel 6, as commonly understood. This allows the stirring blades 4 to drive the bottom of the water tank 2 to be stirred stably and efficiently, preventing the bottom of the water tank 2 from freezing and ensuring that the wine can be dispensed normally while cooling. Meanwhile, after stirring from the bottom, a vortex will be formed in the water tank 2 from bottom to top. The limiting gasket 8 can limit the axial movement of the driven wheel 6 and guide the water vortex generated by the stirring blade 4. To a certain extent, it can expand the diameter of the water vortex, thereby better driving the cooling water flow in the upper part of the water tank 2 and preventing the cooling water in the upper part of the water tank 2 from freezing.

[0027] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0028] Although this document frequently uses terms such as body 1, water tank 2, mounting part 1 2a, connecting part 2a1, mounting part 2b, groove 2c, mounting cavity 2d, motor 3, stirring blade 4, driving wheel 5, tip 5a, driven wheel 6, bearing 7, limiting gasket 8, wine dispensing tap 9, wine dispensing pipe 10, and refrigeration pipe 11, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A beer brewing machine, comprising a body (1), a water tank (2), a motor (3), and a stirring blade (4) all disposed within the body (1), characterized in that, The bottom of the water tank (2) is rotatably connected to a driven wheel (6), and the driven wheel (6) is located in the inner cavity of the water tank (2). The stirring blade (4) is fixed on the driven wheel (6). The motor (3) is located outside the inner cavity of the water tank (2) and fixed at the bottom of the water tank (2). The motor shaft is connected to a driving wheel (5). The driving wheel (5) is opposite to the driven wheel (6), and the driving wheel (5) can drive the driven wheel (6) to rotate through magnetism. There is a gap between the top of the driving wheel (5) and the bottom of the water tank (2). The top of the driving wheel (5) has a protruding cone-shaped tip (5a). The bottom of the water tank (2) has a cone-shaped groove (2c). The tip (5a) is embedded in the groove (2c). The taper of the tip (5a) is smaller than the taper of the groove (2c).

2. The beer machine according to claim 1, characterized in that, There is a second gap between the top wall of the tip (5a) and the bottom wall of the groove (2c), and the size of the second gap is smaller than that of the first gap.

3. The beer machine according to claim 1 or 2, characterized in that, The bottom of the water tank (2) has an installation cavity (2d) that is isolated from the inner cavity of the water tank (2), and the motor (3) and the drive wheel (5) are both located in the installation cavity (2d).

4. The beer machine according to claim 3, characterized in that, The water tank (2) has an upwardly arched mounting part one (2a) in the middle of its bottom wall, and a downwardly protruding cylindrical mounting part two (2b) in the middle of its bottom wall. The inner cavity of the mounting part one (2a) and the inner cavity of the mounting part two (2b) are connected to form the aforementioned mounting cavity (2d). The driving wheel (5) is located inside the mounting part one (2a), and the driven wheel (6) is rotatably connected to the top of the mounting part one (2a).

5. The beer machine according to claim 4, characterized in that, The top of the mounting part (2a) has a protruding columnar connecting part (2a1). The driven wheel (6) is rotatably connected to the connecting part (2a1) via a bearing (7). A limiting gasket (8) is also fixed on the top surface of the connecting part (2a1). The outer diameter of the limiting gasket (8) is larger than the outer diameter of the connecting part (2a1).

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