Adjustable backpressure foaming device and brewing equipment

Abstract

The utility model relates to the technical field of foaming devices of beverage equipment, in particular to an adjustable backpressure foaming device and brewing equipment, which comprise a backpressure main body and a foaming component, the backpressure main body is provided with a flow guide hole and a liquid outlet cavity, the liquid outlet cavity is arranged at the lower end of the backpressure main body, and the foaming component is arranged in the liquid outlet cavity. The flow guide hole is communicated with the upper end of the backpressure main body and the liquid outlet cavity, so that edible raw material slurry flowing in from the upper end flows into the liquid outlet cavity through the flow guide hole; the foaming assembly is adjustably mounted in the liquid outlet cavity, so that the edible raw material slurry flowing into the liquid outlet cavity is subjected to high-frequency oscillation when flowing through the foaming assembly, and foamed mixed slurry is formed and flows out from a liquid outlet of the foaming assembly. In conclusion, when the coffee machine is used for brewing coffee, different foam quantities, sizes, richness or fineness can be generated, so that coffee solutions with different flavors are provided, the taste of the coffee is enriched, the requirements of different people for the taste of the coffee can be met, and the market competitiveness of the product is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of foaming devices for beverage equipment, in particular to an adjustable back-pressure foaming device and a brewing device. Background Art

[0002] A beverage is a product made from one or several edible raw materials, with or without the addition of auxiliary materials, food additives, and food nutrient fortifiers. It is processed into a quantitatively packaged product for direct drinking or for making by infusion, with an ethanol content not exceeding 0.5% by mass fraction, and can also be called a drink. Cocoa, coffee, and tea are known as the three major non-alcoholic beverages in the world today. Stimulating and exciting cocoa, romantic and rich coffee, and natural and fresh tea fragrance. Countries with different cultural backgrounds have their own unique preferences in beverage selection.

[0003] With people's higher requirements for life, they increasingly like to use brewing devices to brew edible raw materials to obtain a cup of their favorite beverage. With the development of technology, multifunctional brewing devices have also emerged, which can brew different types of edible raw materials such as coffee powder, cocoa powder, and tea leaves respectively, expanding the types of brewed beverages and improving the taste of the beverages.

[0004] Currently, brewing devices are used more and more widely, and the brewing system is an important component of the brewing device. The entire working process of the brewing system usually includes: putting the pre-treated edible raw materials into the brewing chamber of the brewing system, closing and compressing the edible raw materials in the brewing chamber, then introducing hot water with a certain pressure to brew and extract the edible raw materials in the brewing chamber. After brewing, filtration is carried out to make the solution of the edible raw materials drain out from the outlet to form a beverage solution. Subsequently, the edible raw material residues in the brewing chamber can be removed and the chamber can be cleaned.

[0005] For example, most coffee drinkers like the rich and delicate taste of foam coffee. Traditional pressure coffee machines can generate foam by using high-pressure coffee liquid to strike a coffee baffle, thus meeting people's needs. However, the amount of foam is relatively small and cannot fully meet people's high expectations for coffee.

[0006] As disclosed in the Chinese patent document with the publication number CN108852004A, a method and device for high-fold foaming of coffee are disclosed, including a pressure control mechanism, a pneumatic source, a water storage device, and a backpressure resonance mechanism. The lower part of the backpressure resonance mechanism is a liquid outlet. The pressurized water in the coffee machine enters the coffee placement chamber to be fused and extracted with the coffee. A resonance needle and a colloid ring form a resonance chamber. When the pressurized coffee slurry passes through the resonance chamber, due to the special structure of the pressurized coffee slurry and the resonance chamber, the coffee slurry undergoes high-frequency oscillation and is fully beaten into foam, flowing out from the liquid outlet. The advantages of the present invention are that the structure of the present invention occupies very little space and can be applied to coffee machines of any model and size. The coffee produced by the method and structure of the present invention can have 70% coffee foam.

[0007] After research and development, the applicant applied for the above patent, which uses a special structure to form high-frequency oscillation, thereby increasing the foam amount of the coffee solution and enhancing the delicate taste of the coffee. During the production, sales, and use of the above patent product, the applicant found that people's requirements for coffee foam have been further improved. Different people have different requirements for the quantity, size, richness, or fineness of coffee foam. Therefore, while increasing the coffee foam, how to adjust the parameters of the foam is a technical problem that needs to be solved. Summary of the Invention

[0008] The present invention aims to provide a technical solution to overcome the above deficiencies.

[0009] The present invention provides an adjustable backpressure foaming device, including a backpressure main body and a foaming assembly. The backpressure main body is provided with a diversion hole and a liquid outlet cavity. The liquid outlet cavity is arranged at the lower end of the backpressure main body. The diversion hole communicates the upper end of the backpressure main body with the liquid outlet cavity, so that the edible raw material slurry flowing in from the upper end flows into the liquid outlet cavity through the diversion hole. The foaming assembly is adjustably installed in the liquid outlet cavity, so that the edible raw material slurry flowing into the liquid outlet cavity undergoes high-frequency oscillation when flowing through the foaming assembly, and forms a foamy mixed slurry flowing out from the liquid outlet of the foaming assembly.

[0010] As a further solution of the present invention: The foaming assembly is provided with an extrusion member. A flow-through channel for the edible raw material slurry to flow through is formed between the extrusion member and the backpressure main body. A soft member and a hard member are arranged in the flow-through channel. The two sides of the soft member are respectively abutted against the backpressure main body and the extrusion member, thereby forming a closed flow-through channel. The soft member and the hard member are abutted against each other to form an oscillation channel. When the edible raw material slurry flows through the oscillation channel, high-frequency oscillation is generated and it is beaten into foam and flows out.

[0011] As a further solution of the present utility model: The foaming assembly is further provided with a backpressure adjusting member, which forms an adjustable fixed connection with the backpressure main body. One end of the backpressure adjusting member is provided with a slurry inlet, and the other end is provided with a slurry outlet. One end of the slurry inlet of the backpressure adjusting member abuts against the extrusion member, thereby applying a certain pressure to the extrusion member, so that the extrusion member forms an extrusion operation on the soft member, causing the soft member to undergo a certain degree of deformation, thereby forming an oscillation channel.

[0012] As a further solution of the present utility model: The backpressure main body is further provided with a cone extending towards the liquid outlet cavity. Both the soft member and the extrusion member are provided as bowl-shaped bodies with openings at the bottom. The inner wall of the soft member facing the cone abuts against the outer wall of the cone, and the inner wall of the extrusion member facing the soft member abuts against the outer wall of the soft member; A limiting protrusion is provided at the lower end of the extrusion member, and the limiting protrusion forms a limiting support for the soft member, so that the soft member is fixedly connected to the extrusion member.

[0013] As a further solution of the present utility model: The backpressure main body is further provided with a second screw, and the second screw is threadedly connected to the tip of the cone and forms an anti-detachment limiting effect on the extrusion member.

[0014] The present utility model further provides a brewing device, including the above-mentioned adjustable backpressure foaming device, which is used to generate foam for the edible raw material slurry of the brewing device.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. By adopting a soft member with a certain elasticity and capable of being compressed to produce a certain deformation, it can change its shape under the extrusion of the extrusion member, thereby changing the shape and size of the oscillation channel. When the edible raw material slurry with a certain pressure passes through the oscillation channels with different shapes and sizes, different foams can be generated, and thus coffee solutions with different flavors can be provided, enriching people's taste.

[0017] 2. The relatively hard hard member can also be used to abut against the soft member, so that the oscillation channel is formed between the soft member, the hard member and the backpressure main body, or between the soft member, the hard member and the extrusion member, so that the extrusion member can more conveniently adjust the shape and size of the oscillation channel.

[0018] 3. A backpressure adjusting member screwed to the backpressure main body can also be provided. By using the screw connection structure of the backpressure adjusting member, the pressure applied by the backpressure adjusting member to the extrusion member can be adjusted, thereby changing the pressure applied by the extrusion member to the soft member, and further changing the shape and size of the oscillation channel to adjust the foam generated by the edible raw material slurry.

[0019] Therefore, through the above improvements, the present utility model can provide an adjustable backpressure foaming device and a brewing device, enabling the coffee machine to produce different amounts, sizes, richness or fineness of foam when brewing coffee, thereby providing coffee solutions with different flavors, enriching the taste of coffee, meeting the taste requirements of different people for coffee, and further enhancing the market competitiveness of the product.

[0020] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 is the overall structural schematic diagram of the present utility model;

[0023] Figure 2 is the cross-sectional schematic diagram of the overall structure of the present utility model;

[0024] Figure 3 is the cross-sectional schematic diagram of the hardware of the present utility model;

[0025] Figure 4 is Figure 3 the partial enlarged schematic diagram at position A in

[0026] Figure 5 is the structural schematic diagram of the flow-through channel of the present utility model;

[0027] Figure 6 is the cross-sectional schematic diagram of the separated state of the present utility model;

[0028] Figure 7 is the schematic diagram of the flow path of the coffee solution inside the device of the present utility model;

[0029] Figure 8 is the schematic diagram of the flow path of the coffee solution flowing from the upper end of the software to the oscillation channel of the present utility model.

[0030] The reference numerals and names in the drawings are as follows:

[0031] 10 Backpressure body; 11 Flow guiding protrusion; 12 Flow guiding groove; 13 Flow guiding hole; 14 Liquid outlet cavity; 15 Filter screen; 16 First screw; 17 Second screw; 18 Cone; 20 Foaming assembly; 21 Liquid outlet; 22 Extrusion part; 23 Soft part; 24 Hard part; 30 Flow through channel; 31 Oscillation channel; 32 High-frequency oscillation surface; 40 Backpressure adjusting part; 41 Slurry inlet; 42 Slurry outlet; 43 Splash-proof opening. Specific implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1 to 8 , in the embodiment of the present invention, an adjustable backpressure foaming device includes a backpressure body 10 and a foaming assembly 20. The backpressure body 10 is provided with a flow guiding hole 13 and a liquid outlet cavity 14. The liquid outlet cavity 14 is arranged at the lower end of the backpressure body 10. The flow guiding hole 13 communicates the upper end of the backpressure body 10 with the liquid outlet cavity 14, so that the edible raw material slurry flowing in from the upper end flows into the liquid outlet cavity 14 through the flow guiding hole 13. The foaming assembly 20 is adjustably installed in the liquid outlet cavity 14, so that the edible raw material slurry flowing into the liquid outlet cavity 14 is high-frequency oscillated when flowing through the foaming assembly 20, and a foamy mixed slurry flows out from the liquid outlet 21 of the foaming assembly 20.

[0034] Specifically, the foaming device can be installed in various coffee machines with appropriate sizes, so that the upper end of the backpressure body 10 can be connected to the brewing water with a certain pressure in the coffee machine, thereby brewing and extracting the coffee powder or coffee cake placed at the upper end of the backpressure body 10, so as to form an edible raw material slurry and flow into the upper end of the backpressure body 10. A filter screen 15 can also be arranged at the upper end of the backpressure body 10 to filter the flowing edible raw material slurry, wherein the filter screen 15 can be detachably fixed to the upper end of the backpressure body 10 through a first screw 16. In addition, a flow guiding protrusion 11 can also be arranged at the upper end of the backpressure body 10, and flow guiding grooves 12 are formed between the flow guiding protrusions 11 to guide the edible raw material slurry and make it flow into the flow guiding hole 13 more smoothly.

[0035] Secondly, the brewing water with a certain pressure inside the coffee machine can be formed by pressurizing with a water pump, or by pressurizing the brewing water with a high-pressure steam or pneumatic device in the prior art. Preferably, it is pressurized with a pneumatic device filled with compressed carbon dioxide, which can make carbon dioxide fuse with the coffee slurry during the brewing process, thereby improving the taste of the coffee solution. Moreover, when the gas-liquid mixture of CO2 + water + coffee slurry flows through the gap space of the oscillation channel 31 while maintaining a certain high pressure, a high-frequency oscillation can be generated between the gas-liquid mixture with a certain pressure and the high-frequency oscillation surface 32 after the deformation of the software 23, so that the gas-liquid mixture generates corresponding foam, forming a foamy coffee mixed solution and improving the taste of the coffee.

[0036] Thirdly, the software 23 deforms to a certain extent under the extrusion of the extrusion part 22 to form the oscillation channel 31, and the extrusion part 22 generates an extrusion effect under the drive of the back pressure adjusting part 40. Therefore, by adjusting the screw connection of the back pressure adjusting part 40, the driving pressure of the extrusion part 22 can be changed, thereby changing the deformation degree of the software 23, and then forming oscillation channels 31 with different shapes and sizes. The oscillation channels 31 with different shapes and sizes can form different high-frequency oscillations for the coffee slurry, thereby generating different foams, so that different foam quantities, sizes, richness or fineness can bring different tastes to the coffee solution, improve people's preference degree, and be suitable for a wider range of people.

[0037] In addition, by adjusting the gap shape and size of the oscillation channel 31, different oscillation effects and different coffee foaming results will be obtained. By rotating the back pressure adjusting part 40, the pressure on the extrusion part 22 can be adjusted, thereby adjusting the deformation of the software 23 and obtaining different gap results. For example, turning the back pressure adjusting part 40 outwards forms a relatively loose extrusion on the extrusion part 22, which can increase the gap of the oscillation channel 31; while turning the back pressure adjusting part 40 inwards forms a relatively tight extrusion on the extrusion part 22, which can reduce the gap of the oscillation channel 31.

[0038] As Figures 2 to 8 shown, preferably, the foaming assembly 20 is provided with an extrusion part 22. A flow-through channel 30 for the coffee slurry to flow through is formed between the extrusion part 22 and the back pressure main body 10. The flow-through channel 30 is provided with a software 23 and a hardware 24. Both sides of the software 23 are respectively abutted against the back pressure main body 10 and the extrusion part 22, thereby closing the flow-through channel 30; the software 23 and the hardware 24 are abutted against each other, so that the software 23 deforms to form an oscillation channel 31, and when the coffee slurry flows through the oscillation channel 31, a high-frequency oscillation is generated and it is beaten into foam and flows out.

[0039] Specifically, the hardware member 24 can be an oscillating needle. For example, it can be made of 304 or 316 stainless steel that can come into contact with food. Of course, it can also be made of other food-grade hard plastics, as long as its hardness is greater than that of the software member 23, so that when the software member 23 is extruded and deformed, the hardware member 24 does not deform. Preferably, the software member 23 is made of a material with certain elasticity and can be compressed to generate deformation, such as silicone material. The extrusion member 22 can be made of hard plastic in the prior art. Moreover, it can be understood that a sealing ring (not shown in the figure) can be provided between the extrusion member 22 and the back pressure main body 10 to form a sealing effect. Similarly, a sealing ring can also be provided on the outer ring of the back pressure main body 10 to form a sealed connection when it is installed on an external coffee machine.

[0040] Secondly, since the software member 23 is made of soft rubber material, it can be closed to the flow-through channel 30 under the extrusion and deformation of the extrusion member 22. The hardware member 24 cannot be extruded and deformed. It is inserted between the software member 23 and the back pressure main body 10, or inserted between the software member 23 and the extrusion member 22, thus forming a corresponding oscillating channel 31. By adjusting the threaded connection of the back pressure adjusting member 40, the driving force on the extrusion member 22 can be changed, thereby changing the pressure of the extrusion member 22 on the software member 23, and further changing the deformation and compression amount of the soft rubber material of the software member 23, so as to obtain gaps with different shapes and sizes, form different oscillating channels 31, and make the coffee slurry flowing through them produce different foams, enriching the taste of the coffee solution.

[0041] In addition, as Figure 6 and Figure 8 shown, preferably, an inclined surface is provided at the upper end of the software member 23, and one end of the inclined surface is inclined at a certain angle in the direction of the flow-through channel 30, so as to accelerate the flow rate of the coffee slurry flowing towards the flow-through channel 30. And as Figure 8 shown by the flow direction of the gas-liquid mixture, since the other parts of the flow-through channel 30 are blocked by the software member 23 and the gas-liquid mixture cannot be discharged, it can only flow towards the oscillating channel 31 and be discharged downward from the oscillating channel 31. When the gas-liquid mixture with a certain pressure passes through the oscillating channel 31, it can generate high-frequency oscillation, so that the gas-liquid mixture is beaten into foam, and the foamed coffee solution is discharged from the slurry outlet 42.

[0042] As Figure 2As shown, in one embodiment, the hardware member 24 is disposed between the back pressure body 10 and the software member 23, so that an oscillation channel 31 is formed at the intersecting positions among the hardware member 24, the software member 23 and the back pressure body 10. In this embodiment, since the hardware member 24 directly abuts against the cone 18 of the back pressure body 10, the opening position of the diversion hole 13 of the back pressure body 10 is also closer to the cone 18, which is more suitable for coffee cakes with a thicker middle and thinner edges, or coffee powder or coffee cakes with relatively uniform thickness.

[0043] In another embodiment, the hardware member 24 is disposed between the extrusion member 22 and the software member 23, so that an oscillation channel 31 is formed at the intersecting positions among the hardware member 24, the software member 23 and the extrusion member 22. In this embodiment, since the hardware member 24 abuts against the inner wall of the extrusion member 22, the distance between the hardware member 24 and the cone 18 is relatively farther. Similarly, the opening position of the diversion hole 13 of the back pressure body 10 will also be farther from the cone 18. Therefore, it is more suitable for coffee powder cakes with a thinner middle and thicker edges.

[0044] As Figure 2 、 Figure 6 and Figure 7 shown, preferably, the foaming assembly 20 is further provided with a back pressure adjusting member 40. An adjustable fixed connection is formed between the back pressure adjusting member 40 and the back pressure body 10. One end of the back pressure adjusting member 40 is provided with a slurry inlet 41, and the other end thereof is provided with a slurry outlet 42. One end of the slurry inlet 41 of the back pressure adjusting member 40 abuts against the extrusion member 22, so as to apply a certain pressure to the extrusion member 22, so that the extrusion member 22 performs an extrusion operation on the software member 23, causing the software member 23 to deform to a certain extent.

[0045] Specifically, preferably, a threaded connection can be adopted between the back pressure adjusting member 40 and the back pressure body 10 to form an adjustable fixed connection. By rotating the back pressure adjusting member 40, the magnitude of the pressure exerted on the extrusion member 22 can be adjusted, and further the deformation degree of the software member 23 can be adjusted, changing the shape or size of the oscillation channel 31, so as to adjust parameters such as the quantity, size, and fineness of the foam generated by high-frequency oscillation, forming foam-like mixed slurries with different appearances or flavors.

[0046] As shown in Table 1, different gap shapes and sizes can form different foams, thus bringing different tastes and appearances.

[0047] In addition, a splash-proof opening 43 may be provided at the lower end of the back pressure adjusting member 40 at the liquid outlet 21, so that the foamy coffee solution can be discharged from the splash-proof opening and splashing can be prevented. Moreover, a heating component in the prior art may be provided on the back pressure adjusting member 40 to heat it, so that the back pressure adjusting member 40 can adjust the temperature of the coffee solution discharged from the splash-proof opening, thereby achieving the effect of accurately controlling the temperature of the coffee product. For example, after normal brewing hot water passes through a room-temperature coffee cake, the finally discharged coffee solution is usually 60°C to 70°C. The coffee solution can be reheated by the back pressure adjusting member 40 with a heating function to increase the temperature, such as increasing it to 70°C to 85°C, so that users can have a better taste when tasting the coffee product.

[0048] As Figure 6 shown, preferably, the back pressure body 10 is further provided with a cone 18 extending towards the liquid outlet cavity 14. The software member 23 is configured as a bowl-shaped body with an opening at the bottom. The inner wall of the software member 23 facing the cone 18 abuts against the outer wall of the cone 18. The extrusion member 22 is configured as a bowl-shaped body with an opening at the bottom. The inner wall of the extrusion member 22 facing the software member 23 abuts against the outer wall of the software member 23. A limiting protrusion is provided at the lower end of the extrusion member 22, and the limiting protrusion forms a support for the software member 23, so that the software member 23 is fixedly connected to the extrusion member 22.

[0049] Specifically, a tight fitting state can be formed between the inner wall of the software member 23 and the outer wall of the cone 18. Also, a tight fitting state can be formed between the inner wall of the extrusion member 22 and the outer wall of the software member 23. After being fitted to each other, it is convenient for the extrusion member 22 to extrude the software member 23, so that it can better seal the flow-through channel 30, so that the coffee slurry can only flow out from the oscillation channel 31, further ensuring that all the coffee slurry passes through high-frequency oscillation, thereby generating rich foam. In order to prevent the software member 23 from falling off, a corresponding limiting protrusion can also be provided at the lower end of the extrusion member 22 to form a limiting and anti-detachment effect on the software member 23.

[0050] As Figure 5 and Figure 6 shown, preferably, the back pressure body 10 is further provided with a second screw 17. The second screw 17 is threadedly connected to the tip of the cone 18 and forms an anti-detachment and limiting effect on the extrusion member 22.

[0051] Specifically, the diameter of the nut of the second screw 17 is larger than the diameter of the bottom opening of the extrusion member 22. By rotating the back pressure adjusting member 40, when the extrusion member 22 moves downward, it can be restricted by the nut to prevent it from falling off. At the same time, the nut of the second screw 17 can also prevent the coffee solution from directly spraying towards the slurry outlet 42. When the coffee solution with a certain pressure directly sprays towards the slurry outlet 42, accidents are likely to occur, causing injury to people. The nut of the second screw 17 is exactly located below the liquid outlet 21 and can block the sprayed coffee solution, enabling the coffee solution to release its pressure in a space with a relatively larger internal volume within the back pressure adjusting member 40 and then flow towards the anti-splash opening 43 at a relatively slower speed, thus avoiding accidents.

[0052] Secondly, the foaming device also has a cleaning function. Since the flow-through channel 30 may be blocked (such as foreign objects like coffee powder), the back pressure adjusting member 40 can be rotated outward to release the pressure on the extrusion member 22, causing the extrusion member 22 to synchronously release the pressure on the software member 23. After losing pressure, the software member 23 with a certain elasticity can self-recover and resume its deformation. During the process of resuming deformation, due to the filling effect of the hardware member 24, the flow-through channel 30 can be adjusted to the maximum gap, so that liquids such as clean water can be used to clean and dredge it.

[0053] Moreover, when thorough cleaning is required, the foaming assembly 20 can be cleaned separately. For example, the foaming device can be disassembled, that is, the back pressure adjusting member 40 is rotated and removed from the back pressure main body 10. After removing the second screw 17, the entire foaming assembly 20 can be disassembled for cleaning. In addition, since the hardware member 24 is not fixedly connected to the software member 23 or the back pressure main body 10, when the extrusion member 22 moves downward, the hardware member 24 will also move downward. Therefore, the nut of the second screw 17 can also limit the hardware member 24. As Figure 6 shown, in order to prevent the hardware member 24 from tilting during assembly after disassembly and cleaning, which may affect the high-frequency oscillation effect, one end of the hardware member 24 can be bent at a certain angle so that the bent part can be inserted into the diversion hole 13 to play an assembly positioning role for it.

[0054] The present utility model can also implement an adjustable back pressure foaming method, including the following steps:

[0055] S1, Install the foaming device inside various coffee machines in existing products, so that the brewing water with a certain pressure in the coffee machine can brew and extract the coffee placed at the upper end of the back pressure main body 10. The generated coffee slurry flows into the upper end of the back pressure main body 10 of the foaming device and, after passing through the diversion hole 13 of the back pressure main body 10, flows into the foaming assembly 20 provided at the lower end of the back pressure main body 10;

[0056] In S2, an oscillation channel 31 is formed inside the foaming component 20. When the coffee slurry flowing into the foaming component 20 passes through the oscillation channel 31, high-frequency oscillation is generated, and after being beaten into foam, it forms a foamy mixed slurry and flows out.

[0057] In step S2, by adjusting the extrusion member 22 of the foaming component 20, it exerts extrusion or release on the oscillation channel 31, thereby adjusting the shape or size of the oscillation channel 31, and further adjusting the parameters of the foam generated by the coffee slurry.

[0058] Specifically, by adjusting the shape and size of the oscillation channel 31, the foaming effect of the high-frequency oscillation on the coffee slurry can be adjusted, causing the foam generated by the coffee slurry to change. The parameters of the foam include the total amount of foam generated, the size of the foam bubbles, the fineness of the foam, etc., so that after different generated foams are mixed with coffee, different forms and tastes are formed.

[0059] In another implementation method, in step S2, a software member 23 is arranged inside the foaming component 20. The extrusion member 22 exerts extrusion on the software member 23, causing the software member 23 to undergo a certain deformation, thereby forming the oscillation channel 31. In step S2, the back pressure adjusting member 40 of the foaming component 20 abuts against the extrusion member 22, and adjusting the back pressure adjusting member 40 can adjust the pressure magnitude exerted by the extrusion member 22 on the software member 23.

[0060] Specifically, by rotating the back pressure adjusting member 40, a certain pressure can be exerted on the extrusion member 22, causing the extrusion member 22 to perform an extrusion operation on the software member 23. Between the deformed software member 23 by extrusion and the hard body member 24 and the back pressure main body 10, or between the deformed software member 23 by extrusion and the hard body member 24 and the extrusion member 22, the oscillation channel 31 is formed. When the coffee slurry flowing into the foaming component 20 passes through the oscillation channel 31, high-frequency oscillation is generated and it is beaten into foam and flows out.

[0061] In another implementation method, in step S2, an oscillation channel 31 is formed among the hard body member 24, the back pressure main body 10, and the deformed software member 23 by extrusion of the foaming component 20. When the coffee slurry flowing into the foaming component 20 passes through the oscillation channel 31, high-frequency oscillation is generated and it is beaten into foam and flows out.

[0062] In yet another implementation method, in step S2, an oscillation channel 31 is formed among the extrusion member 22, the back pressure main body 10, and the deformed software member 23 by extrusion of the foaming component 20. When the coffee slurry flowing into the foaming component 20 passes through the oscillation channel 31, high-frequency oscillation is generated and it is beaten into foam and flows out.

[0063] Through the above implementation method, the utility model can achieve an adjustable coffee foaming effect. According to different requirements, the foaming degree can be finely adjusted to obtain different coffee effects and coffee quality, thus forming different coffee flavors. It is also possible to perform an optional secondary heating operation on the discharged coffee, so as to accurately control the temperature of the produced coffee solution. It also has the functions of anti-blocking and washability; moreover, it can be taken out separately and quickly for rinsing, making the cleaning more thorough. At the same time, the utility model device or method of the utility model can be applied to all coffee types on the market, such as capsules, powders, compacts, etc. After passing through the foaming device, the required foaming effect can be obtained, and the foam can also be adjusted according to different personal tastes to obtain coffee solutions with different flavors, enhancing people's sense of happiness.

[0064] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model.

Claims

1. An adjustable backpressure foaming device, characterized in that, It includes a backpressure body (10) and a foaming component (20). The backpressure body (10) is provided with a diversion hole (13) and a liquid outlet cavity (14). The liquid outlet cavity (14) is arranged at the lower end of the backpressure body (10). The diversion hole (13) connects the upper end of the backpressure body (10) with the liquid outlet cavity (14), so that the edible raw material slurry flowing in from the upper end flows into the liquid outlet cavity (14) through the diversion hole (13). The foaming component (20) is adjustably installed in the liquid outlet cavity (14), so that the edible raw material slurry flowing into the liquid outlet cavity (14) is subjected to high-frequency oscillation when flowing through the foaming component (20), and a foamy mixed slurry flows out from the liquid outlet (21) of the foaming component (20).

2. The adjustable backpressure foaming device according to claim 1, wherein, The foaming component (20) is provided with a squeezing member (22). A flow-through channel (30) for the edible raw material slurry to flow through is formed between the squeezing member (22) and the backpressure body (10). A soft member (23) and a hard member (24) are arranged in the flow-through channel (30). The two sides of the soft member (23) are respectively abutted against the backpressure body (10) and the squeezing member (22), so as to form a closure for the flow-through channel (30). The soft member (23) and the hard member (24) are abutted against each other to form an oscillation channel (31), so that when the edible raw material slurry flows through the oscillation channel (31), high-frequency oscillation is generated and it is beaten into foam and flows out.

3. The adjustable backpressure foaming device according to claim 2, wherein The foaming component (20) is further provided with a backpressure adjusting member (40). An adjustable fixed connection is formed between the backpressure adjusting member (40) and the backpressure body (10). One end of the backpressure adjusting member (40) is provided with a slurry inlet (41), and the other end is provided with a slurry outlet (42). One end of the slurry inlet (41) of the backpressure adjusting member (40) is abutted against the squeezing member (22), so as to apply a certain pressure to the squeezing member (22), so that the squeezing member (22) performs a squeezing operation on the soft member (23), causing the soft member (23) to deform to a certain extent, thereby forming the oscillation channel (31).

4. An adjustable backpressure foaming device according to claim 3, characterized in that, The backpressure body (10) is further provided with a cone (18) extending towards the liquid outlet cavity (14). Both the soft member (23) and the squeezing member (22) are provided as bowl-shaped bodies with openings at the bottom. The inner wall of the soft member (23) facing the cone (18) is abutted against the outer wall of the cone (18). The inner wall of the squeezing member (22) facing the soft member (23) is abutted against the outer wall of the soft member (23). A limiting protrusion is arranged at the lower end of the squeezing member (22), and the limiting protrusion forms a limiting support for the soft member (23), so that the soft member (23) is fixedly connected to the squeezing member (22).

5. An adjustable backpressure foaming device according to claim 4, characterized in that, The backpressure body (10) is further provided with a second screw (17). The second screw (17) is threadedly connected to the tip of the cone (18) and forms an anti-detachment limiting effect on the squeezing member (22).

6. A brewing device, characterized in that, An adjustable backpressure foaming device according to any one of claims 1-5, which is used to generate foam for the edible raw material slurry of a brewing device.

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