Beverage foaming device

Abstract

The beverage foaming device comprises a four-way valve and a one-way valve, the four-way valve is provided with a foaming chamber, a mixing chamber, a foaming through hole, a steam inlet, an air inlet and a milk inlet, the foaming through hole is communicated with the foaming chamber and the mixing chamber, and the longitudinal sectional area of the foaming through hole is smaller than that of the foaming chamber and the mixing chamber; the one-way valve is connected with the steam inlet, and the output end of the one-way valve extends to the position between the air inlet and the milk inlet. According to the technical scheme, the one-way valve is connected to the steam inlet of the four-way valve, and the output end of the one-way valve is controlled to extend between the air inlet and the milk inlet, so that air entering from the air inlet and milk entering from the milk inlet can be separated, and direct contact between the air and the milk is avoided; after being conveyed leftwards, air and milk are mixed with steam at the left end of the mixing chamber, and the mixture penetrates through the foaming through holes to enter the foaming chamber to be foamed into milk foam, so that a better foaming effect can be ensured, and the foaming quality of the milk foam is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coffee machine related technical field, especially a kind of beverage frothing device. BACKGROUND

[0002] With the improvement of people's living standards, coffee is more and more loved by people, and now milk froth coffee is very popular, so the two-in-one coffee machine that can both brew coffee and make milk froth is also very popular.

[0003] The existing frothing device matched with the coffee machine mainly includes a four-way valve, which is used to mix, froth and output the steam entering from the steam inlet, the milk entering from the milk inlet and the air entering from the air inlet in the four-way valve. The air inlet and the milk inlet on the existing four-way valve are generally arranged in an upper-lower corresponding manner. However, in actual use, the direct contact between the milk entering from the milk inlet and the air entering from the air inlet may affect the frothing effect. SUMMARY

[0004] In order to overcome the technical defects of the prior art, the purpose of the utility model is to provide a beverage frothing device to solve the above technical problems.

[0005] The technical solution adopted by the utility model to solve the technical problems is as follows:

[0006] According to one aspect of the utility model, a beverage frothing device is designed, which includes a four-way valve and a check valve. The four-way valve is provided with a frothing chamber, a mixing chamber, a frothing through-hole with a longitudinal cross-sectional area smaller than that of the frothing chamber and the mixing chamber, a steam inlet, an air inlet and a milk inlet connected with the mixing chamber. The check valve is connected with the steam inlet, and the output end of the check valve extends between the air inlet and the milk inlet.

[0007] By connecting the check valve with the steam inlet of the four-way valve and controlling the output end of the check valve to extend between the air inlet and the milk inlet, the air entering from the air inlet and the milk entering from the milk inlet can be separated to avoid direct contact between the air and the milk. After the air and the milk are conveyed to the left, they are mixed with the steam at the left end of the mixing chamber. The mixture enters the frothing chamber through the frothing through-hole to be frothed into milk froth. In this way, the frothing effect can be guaranteed, and the frothing quality of the milk froth can be improved.

[0008] In order to better solve the above technical defects, the utility model also has a better technical solution:

[0009] In some embodiments, the air regulating valve and the milk suction pipe are connected to the upper and lower ends of the four-way valve, the air outlet of the air regulating valve is communicated with the air inlet, and the milk outlet hole of the lower end of the milk suction pipe is communicated with the milk inlet.

[0010] In some embodiments, the milk box and the milk cover connected to the top of the milk box are further included, the four-way valve is installed in the milk cover, and the lower end of the milk suction pipe extends into the milk box.

[0011] In some embodiments, the milk outlet pipe connected to one side of the foaming chamber is provided with a protruding rib along the length direction of the milk outlet pipe, and the input end of the one-way valve is connected with a steam adapter.

[0012] In some embodiments, the output end of the one-way valve is provided with a flow guide groove corresponding to the air inlet and the milk inlet at the top and the bottom, respectively, and the bottom of the flow guide groove is in an arc structure with a left low and a right high.

[0013] In some embodiments, the one-way valve includes a valve shell, a sealing retainer, a plug and an elastic member, the sealing retainer, the plug and the elastic member are arranged in the valve shell, the right end of the elastic member abuts against the plug, the left end of the elastic member abuts against a step in the valve shell, the plug abuts against the sealing retainer and blocks a passage on the sealing retainer. The one-way valve can be opened only when the steam enters the one-way valve and reaches a set steam pressure, so that the steam with uniform pressure enters the mixing chamber and the foaming chamber, ensuring continuous and uniform milk foam and improving the foaming effect of the milk. When the foaming is completed, the one-way valve closes the pipeline to prevent the milk from being sucked, thereby achieving the non-return effect.

[0014] In some embodiments, the cross-sectional area of the milk outlet hole is 0.15mm 2 -0.78mm 2 When hot milk is foamed, the cross-sectional area of the milk outlet hole is controlled to be 0.15mm 2 -0.78mm 2 , so that the hot milk has a good foaming effect.

[0015] In some embodiments, the cross-sectional area of the milk outlet hole is 3.14mm 2 -12.56mm 2 When cold milk is foamed, the cross-sectional area of the milk outlet hole is controlled to be 3.14mm 2 -12.56mm 2 , so that the cold milk has a good foaming effect.

[0016] In some embodiments, the gas outlet hole in the one-way valve is a tapered conical structure, the length of the gas outlet hole is 2-5mm, the left end area of the gas outlet hole is 0.5mm 2 -1mm2 .

[0017] In some embodiments, the upper end of the milk suction pipe is internally provided with a stepped position, and a cylindrical piece is inserted in the stepped position, and the milk outlet hole is arranged on the cylindrical piece. Thus, the size of the milk outlet hole can be selected by replacing the cylindrical piece with different hole diameters, thereby meeting the needs of milk foaming. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Structure diagram of the beverage foaming device according to an embodiment of the present application;

[0019] Figure 2 Structure diagram of the beverage foaming device according to an embodiment of the present application;

[0020] Figure 3 Structure diagram of the beverage foaming device according to an embodiment of the present application;

[0021] Figure 4 Structure diagram of the four-way valve according to an embodiment of the present application;

[0022] Figure 5 Structure diagram of the four-way valve according to an embodiment of the present application;

[0023] Figure 6 Structure diagram of the one-way valve according to an embodiment of the present application;

[0024] Figure 7 Structure diagram of the adjusting rod according to an embodiment of the present application;

[0025] Figure 8 Structure diagram of the adjusting rod and the oval protrusion in cooperation according to an embodiment of the present application;

[0026] Figure 9 Structure diagram of the sealing member according to an embodiment of the present application;

[0027] Figure 10 Structure diagram of the oval protrusion according to an embodiment of the present application;

[0028] Reference signs:

[0029] 1. four-way valve; 11. foaming chamber; 12. mixing chamber; 13. foaming through hole; 14. steam inlet; 15. air inlet; 16. milk inlet; 2. one-way valve; 20. flow guide groove; 21. valve shell; 22. sealing check ring; 23. plug; 24. elastic member; 25. air outlet hole; 3. air adjusting valve; 31. adjusting knob; 32. adjusting rod; 321. air inlet groove; 322. communication groove; 33. sealing member; 331. oval protrusion; 4. milk suction pipe; 5. milk box; 6. milk cover; 61. upper milk cover; 62. lower milk cover; 7. milk outlet pipe; 71. rib; 8. steam adapter; a. milk outlet hole; 9. cylindrical piece. DETAILED DESCRIPTION

[0030] To make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model is further described in detail below in conjunction with specific embodiments and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0031] In the description of the utility model, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0032] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing, connecting and fixing should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model in conjunction with the specific content of the technical scheme.

[0033] Reference Figures 1 to 10 As shown in the drawings, the utility model provides a kind of beverage foaming device, including: four-way valve 1, check valve 2, air regulating valve 3, milk suction pipe 4, milk box 5 and milk cover 6;Milk box 5 has milk storage cavity in it, for storing milk, milk cover 6 is connected in the top of milk box 5 by clamping or screw connection mode, and the milk cover 6 of the embodiment is preferably connected on the milk box 5 by clamping, specifically, one or two or three or more clamping heads are arranged at the lower end of milk cover 6, and the same number of clamping grooves as the number of clamping heads are arranged in the inside of milk box 5, the clamping head at the lower end of milk cover 6 is inserted into the inside of milk box 5, and the clamping head is clamped and matched with the clamping groove on the milk box 5, milk cover 6 includes upper milk cover 61 and lower milk cover 62, and the clamping head is arranged on the lower milk cover 62, and the upper milk cover 61 is clamped or fixed by screw with the lower milk cover 62, and the upper milk cover 61 of the embodiment is preferably fixed by screw with the lower milk cover 62.

[0034] Four-way valve 1 is arranged in milk cover 6, and four-way valve 1 is provided with foaming chamber 11, mixing chamber 12, foaming through hole 13 and steam inlet 14, air inlet 15 and milk inlet 16 communicated with mixing chamber 12, milk outlet pipe 7 is inserted or threadedly connected to the left end of foaming chamber 11, and the left end of foaming chamber 11 is preferably inserted with milk outlet pipe 7, foaming through hole 13 is located between foaming chamber 11 and mixing chamber 12 and communicates the two, the longitudinal section area of foaming through hole 13 is smaller than the longitudinal section area of foaming chamber 11 and also smaller than the longitudinal section area of mixing chamber 12, and air inlet 15 and milk inlet 16 correspond to each other in up and down.

[0035] The one-way valve 2 is inserted or screwed with the steam inlet 14, and in the embodiment, the one-way valve 2 is preferably inserted with the steam inlet 14, the one-way valve 2 is sleeved with a sealing ring in sealing contact with the four-way valve 1, the input end of the one-way valve 2 is inserted or screwed with the steam adapter 8, the steam adapter 8 is used to connect the steam generating device, the output end of the one-way valve 2 extends between the air inlet 15 and the milk inlet 16, and the output end of the one-way valve 2 is provided with a flow guide groove 20 at the top and the bottom, respectively. The bottom of the flow guide groove 20 is in an arc-shaped structure with a left low and a right high, which can achieve a good effect of guiding air and milk, the flow guide groove 20 at the top corresponds to the air inlet 15 up and down, and the flow guide groove 20 at the bottom corresponds to the milk inlet 16 up and down.

[0036] The one-way valve 2 comprises a valve shell 21, a sealing stop ring 22, a plug 23 and an elastic member 24, the sealing stop ring 22, the plug 23 and the elastic member 24 are arranged in the valve shell 21, the right end of the elastic member 24 abuts against the plug 23, the left end abuts against a step in the valve shell 21, the plug 23 abuts against the sealing stop ring 22 and blocks a passage on the sealing stop ring 22, and the elastic member 24 is a spring or a spring piece or a wire spring or other elastic components, and in the embodiment, the elastic member 24 is preferably a spring, and the plug 23 is in a spherical structure or a T-shaped structure or the like.

[0037] The one-way valve 2 is provided with an air outlet hole 25 at the left end, the air outlet hole 25 is in a tapered structure with a larger right end diameter and a smaller left end diameter, the length of the air outlet hole 25 is 2-5 mm, the area of the left end of the air outlet hole 25 is 0.5 mm 2 -1mm 2 , the length of the air outlet hole 25 is 2 mm or 3 mm or 4 mm or 5 mm, and the area of the left end of the air outlet hole 25 is 0.5 mm 2 or 0.6 mm 2 or 0.7 mm 2 or 0.8 mm 2 or 1 mm 2 , which can be selected according to needs.

[0038] The air adjusting valve 3 is inserted or screwed on the top of the four-way valve 1. In this embodiment, the air adjusting valve 3 is preferably inserted on the top of the four-way valve 1. The air outlet of the air adjusting valve 3 is in communication with the air inlet 15. The air adjusting valve 3 is used to adjust the air inlet 15. The air adjusting valve 3 comprises an adjusting knob 31, an adjusting rod 32 and a sealing member 33. The adjusting knob 31 is rotatably connected with the milk cover 6. The lower end of the adjusting rod 32 is cylindrical. The upper end of the adjusting rod 32 is connected with the adjusting knob 31. The sealing member 33 is installed in the groove on the four-way valve 1. The sealing member 33 has an installation groove. The bottom of the installation groove has an air outlet. An oval-shaped protrusion 331 with an inclined structure is arranged on the sidewall of the installation groove. The adjusting rod 32 is inserted into the installation groove and in contact with the oval-shaped protrusion 331. A strip-shaped air inlet groove 321 is arranged on the outer sidewall of the adjusting rod 32 along the length direction. The depth of the air inlet groove 321 gradually increases from the upper end to the lower end. The air inlet groove 321 and the oval-shaped protrusion 331 form a gap. A communication groove 322 is arranged on the bottom of the adjusting rod 32. The communication groove 322 is in communication with the air outlet at the bottom of the installation groove. When the adjusting knob 31 is rotated to drive the adjusting rod 32 to rotate, the oval-shaped protrusion 331 and the air inlet groove 321 at different positions form air inlet gaps with different sizes, so as to change the size of the air inlet gap and control the air inlet amount.

[0039] The upper end of the milk suction pipe 4 is inserted or screwed on the lower end of the four-way valve 1. In this embodiment, the upper end of the milk suction pipe 4 is preferably inserted on the milk inlet 16. The milk outlet hole a at the upper end of the milk suction pipe 4 is in communication with the milk inlet 16. A sealing ring is sleeved on the upper end of the milk suction pipe 4 and in sealing contact with the four-way valve 1. The lower end of the milk suction pipe 4 extends to the bottom of the milk box 5. One or two protruding ribs 71 are arranged on the milk outlet pipe 7 along the length direction.

[0040] When the milk box 5 stores hot milk for foaming, the cross-sectional area of the milk outlet hole a at the upper end of the milk suction pipe 4 is 0.15mm 2 -0.78mm 2 . Specifically, the cross-sectional area of the milk outlet hole a can be 0.15mm 2 , 0.2mm 2 , 0.3mm 2 , 0.4mm 2 , 0.5mm 2 , 0.6mm 2 or 0.78mm 2 , as needed. When the milk box 5 stores cold milk for foaming, the cross-sectional area of the milk outlet hole a at the upper end of the milk suction pipe 4 is 3.14mm 2 -12.56mm 2 . Specifically, the cross-sectional area of the milk outlet hole a can be 3.14mm 2 , 4mm 2 , 6mm 2or 8mm 2 or 10mm 2 or 12.56mm 2 , according to the needs of the selection. The upper end of the milk suction pipe 4 is internally provided with a step position, the step position is inserted with a cylindrical part 9, the cylindrical part 9 is provided with the milk outlet hole a, of course, the cylindrical part 9 can also be an integral structure with the milk outlet pipe 7.

[0041] The above only describes some embodiments of the present application, and for those skilled in the art, without departing from the inventive concept, a number of modifications and improvements can be made, which are all within the scope of the present application.

Claims

1. A beverage foaming device, characterized in that The utility model relates to a milk frothing device, comprising: A four-way valve and a one-way valve, the four-way valve is provided with a frothing chamber, a mixing chamber, a frothing hole connecting the frothing chamber and the mixing chamber and having a longitudinal section area smaller than that of the two chambers, and a steam inlet, an air inlet and a milk inlet connected to the mixing chamber, the one-way valve is connected to the steam inlet, and the output end of the one-way valve extends between the air inlet and the milk inlet.

2. A beverage frothing device according to claim 1, characterised in that The utility model also comprises an air regulating valve and a milk suction pipe, the air regulating valve and the milk suction pipe are connected to the upper and lower ends of the four-way valve, the air outlet of the air regulating valve is connected to the air inlet, and the milk outlet of the upper end of the milk suction pipe is connected to the milk inlet.

3. A beverage frothing device according to claim 2, wherein The utility model also comprises a milk box and a milk cover connected to the top of the milk box, the four-way valve is installed in the milk cover, and the lower end of the milk suction pipe extends into the milk box.

4. A beverage frothing device according to claim 1, wherein The frothing chamber is connected to a milk outlet pipe on one side, the milk outlet pipe is provided with protruding ribs along the length direction, and the input end of the one-way valve is connected to a steam adapter.

5. A beverage frothing device according to claim 1, wherein The output end of the one-way valve is provided with a flow guide groove corresponding to the air inlet and the milk inlet at the top and the bottom, respectively, and the bottom of the flow guide groove is in an arc structure with the left end lower than the right end.

6. A beverage frothing device according to claim 1, wherein The one-way valve comprises a valve shell, a sealing retainer, a plug and an elastic member, the sealing retainer, the plug and the elastic member are arranged in the valve shell, the right end of the elastic member abuts against the plug, the left end abuts against a step in the valve shell, the plug abuts against the sealing retainer and blocks a passage on the sealing retainer.

7. A beverage frothing device according to claim 2, wherein The cross-sectional area of the milk outlet hole is 0.15 mm 2 -0.78 mm 2 .

8. A beverage frothing device according to claim 2, wherein The cross-sectional area of the milk outlet hole is 3.14 mm 2 - 12.56 mm 2 .

9. A beverage frothing device according to claim 1, wherein The air outlet hole in the one-way valve is a tapered conical structure, with a length of 2-5 mm and an area of 0.5 mm at the left end 2 -1 mm 2 .

10. A beverage frothing device according to claim 7 or 8, characterised in that, The upper end of the milk suction pipe is provided with a step inside, the step is inserted with a cylindrical member, and the cylindrical member is provided with the milk outlet.

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