Cold brewing coffee machine

Abstract

The utility model relates to the technical field of coffee machines, in particular to a cold brewing coffee machine which comprises a machine base, and a driving device is arranged in the machine base. The stirring cup is detachably installed on the machine base, a filter basket is detachably installed in the stirring cup, the filter basket is arranged in the stirring cup in a suspended mode, and a gap is reserved between the periphery of the filter basket and the inner wall of the stirring cup; the stirring device is driven by the driving device to rotate, the stirring device comprises a first stirring blade, a second stirring blade and a rotating shaft, the first end of the rotating shaft is fixedly connected with the first stirring blade, the first stirring blade is located between the filter basket bottom plate and the stirring cup bottom plate, the second end of the rotating shaft is fixedly connected with the second stirring blade, and the second stirring blade is located in the filter basket. Through the arrangement, the first stirring blade can be used for stirring clear water in the stirring cup, the second stirring blade can be used for stirring clear water and coffee powder mixed liquid in the filter basket, the stirring effect is better under the double stirring action of the first stirring blade and the second stirring blade, and the brewing efficiency of coffee liquid can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to a cold brew coffee machine. Background Art

[0002] At present, most of the existing coffee machines on the market use hot water to brew coffee powder. Hot water brewing coffee powder will decompose the tannins in the coffee and affect the taste. Cold water is used to soak the ground coffee powder and then extract it. During the process, because the coffee powder does not come into contact with hot water, the tannins in it will almost not be decomposed at all. Therefore, the taste will be particularly pure, smooth, and not sour. Therefore, cold brew coffee machines came into being.

[0003] For example, a Chinese utility model patent with authorization announcement number CN209574387U discloses a cold brew coffee machine, including a stirring cup, which is provided with a bottle mouth connected to the outside, and also includes a magnetic stirrer and a magnetic stirring seat. A filter liner is suspended in the stirring cup, and the bottom of the filter liner is suspended in the stirring cup, with a gap between the outer periphery of the filter liner and the inner wall of the stirring cup. The magnetic stirrer includes a rotating shaft and a transmission magnetic block with a magnetic sheet built in that rotates with the rotating shaft. The rotating shaft is axially arranged and rotatably connected to the bottom of the filter liner, the upper end of the rotating shaft extends into the filter liner and is connected to a stirring knife, the transmission magnetic block is located on the outer side of the bottom of the filter liner, the stirring cup is placed flat on the magnetic stirring seat, a motor is arranged in the magnetic stirring seat, a circular magnetic block is arranged on the motor output shaft, and the circular magnetic block and the magnetic sheet are magnetically attracted and transmitted to each other. The prior art connects the stirring blade with the magnetic stirrer, places the stirring cup in the middle of the magnetic stirring base, and uses the motor in the magnetic stirring base to drive the circular magnetic block of the stirring base, and then uses the magnetic principle to drive the magnetic stirrer and the stirring blade in the stirring cup to rotate together, thereby achieving the purpose of stirring the coffee powder in the filter tank for better decomposition. However, the prior art only has a single stirring blade in the filter tank, which has a poor stirring effect, thereby affecting the brewing efficiency of the coffee liquid.

[0004] Therefore, there is still room for improvement and development in the existing technology. Utility Model Content

[0005] In order to solve the problems of the prior art, the utility model provides a cold brew coffee machine, wherein the stirring device comprises a first stirring blade and a second stirring blade, wherein the first stirring blade is located between the bottom plate of the filter basket and the bottom plate of the stirring cup, and can be used to stir the clean water in the stirring cup, and the second stirring blade is located in the filter basket, and can be used to stir the clean water and coffee powder mixture in the filter basket. Under the double stirring action of the first stirring blade and the second stirring blade, the stirring effect is better, and the brewing efficiency of the coffee liquid can be improved.

[0006] In order to achieve the above purpose, the technical solution applied by the utility model is as follows:

[0007] A cold brew coffee machine comprises a machine base, wherein a driving device is arranged in the machine base; a stirring cup, wherein the stirring cup is detachably mounted on the machine base, wherein a filter basket is detachably mounted in the stirring cup, wherein the filter basket is suspended in the stirring cup, and a gap is left between the outer periphery of the filter basket and the inner wall of the stirring cup; and a stirring device, wherein the stirring device is driven to rotate by the driving device, wherein the stirring device comprises a first stirring blade, a second stirring blade and a rotating shaft, wherein a first end of the rotating shaft is fixedly connected to the first stirring blade, wherein the first stirring blade is located between a bottom plate of the filter basket and a bottom plate of the stirring cup, wherein a second end of the rotating shaft is fixedly connected to the second stirring blade, and the second stirring blade is located in the filter basket.

[0008] According to the above scheme, the first stirring blade and the second stirring blade are both disc structures, a plurality of rectangular blades are evenly spaced on the upper surface of the first stirring blade, and a groove is formed between the rectangular blade and the axis of the first stirring blade, a plurality of right-angled triangular blades are evenly spaced on the upper surface of the second stirring blade, and the hypotenuse of the right-angled triangular blades gradually inclines from high to low from the axis of the second stirring blade to the outer edge of the second stirring blade, and the lower surfaces of the first stirring blade and the second stirring blade are both provided with drainage grooves.

[0009] According to the above scheme, the driving device includes a motor and a driving wheel, the output end of the motor is fixedly connected to the driving wheel, and the driving wheel is arranged in a transmission manner with the first stirring blade.

[0010] According to the above solution, a first magnet is fixed on the driving wheel, a second magnet is fixed in the first stirring blade, and the driving wheel and the first stirring blade are magnetically attracted to each other through the first magnet and the second magnet.

[0011] According to the above solution, a locking boss is provided on the inner wall of the mixing cup, and a locking groove is provided on the outer wall of the filter basket. The locking groove is connected to the locking boss so that the filter basket is suspended in the mixing cup.

[0012] According to the above solution, the outer wall of the filter basket is provided with flanges and elastic members arranged in an upper and lower manner, and a positioning groove is formed between the flanges and the elastic member.

[0013] According to the above scheme, the filter basket includes a filter basket upper cover, a stainless steel outer net, a stainless steel inner woven net and a filter basket lower cover. The stainless steel outer net is wrapped and fixed to the outside of the stainless steel inner woven net to form a filter body. The upper end of the filter body is detachably fixedly connected to the filter basket upper cover, and the lower end of the filter body is detachably fixedly connected to the filter basket lower cover. A handle is provided on the filter basket upper cover.

[0014] According to the above scheme, the filter basket lower cover is provided with an axial hole, a shaft sleeve is fixed in the axial hole, the shaft sleeve is sleeved on the rotating shaft, and the rotating shaft can rotate relative to the shaft sleeve.

[0015] According to the above solution, a positioning groove is provided on the upper surface of the machine base, and the bottom of the stirring cup is mounted in the positioning groove.

[0016] According to the above solution, control knobs and power plugs are symmetrically arranged on both sides of the outer wall of the base, and a circuit board is arranged inside the base.

[0017] According to the above solution, a cover is detachably mounted on the opening of the stirring cup, and a handle is provided on the outer wall of the stirring cup.

[0018] Beneficial effects of the utility model:

[0019] The utility model is arranged such that the stirring device comprises a first stirring blade and a second stirring blade, wherein the first stirring blade is located between the bottom plate of the filter basket and the bottom plate of the stirring cup, and can be used to stir the clean water in the stirring cup, and the second stirring blade is located in the filter basket, and can be used to stir the clean water and coffee powder mixture in the filter basket. Under the double stirring action of the first stirring blade and the second stirring blade, the stirring effect is better, and the brewing efficiency of the coffee liquid can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a sectional view of the overall structure of the utility model;

[0022] Figure 3 yes Figure 2 A magnified image of position A in the middle;

[0023] Figure 4 yes Figure 2 Enlarged view of position B in the middle;

[0024] Figure 5 This is an assembly diagram of the first stirring blade and the second stirring blade of the utility model;

[0025] Figure 6 yes Figure 5 Bottom view;

[0026] Figure 7 It is an exploded view of the filter basket of the utility model.

[0027] In the figure:

[0028] 1. Mixing cup; 2. Machine base; 3. Filter basket; 4. Positioning boss; 5. Cover; 6. Handle; 7. Control knob; 8. Positioning slot; 9. Positioning slot; 10. Motor; 11. Driving wheel; 12. First magnet; 13. First stirring blade; 14. Second magnet; 15. Second stirring blade; 16. Rotating shaft; 17. Bushing; 18. Flanging; 19. Elastic part; 20. Right-angled triangular fan blade; 21. Rectangular fan blade; 22. Filter basket upper cover; 23. Stainless steel outer net; 24. Stainless steel inner woven net; 25. Filter basket lower cover; 26. Handle; 27. Groove; 28. Bevel; 29. ​​Drainage trough. DETAILED DESCRIPTION

[0029] The technical solution of the utility model is described below in conjunction with the accompanying drawings and embodiments.

[0030] like Figures 1 to 7 As shown, the utility model describes a cold brew coffee machine, comprising a machine base 2, wherein a driving device is provided in the machine base 2; a stirring cup 1, wherein the stirring cup 1 is detachably mounted on the machine base 2, wherein a filter basket 3 is detachably mounted in the stirring cup 1, wherein the filter basket 3 is suspended in the stirring cup 1, and a gap is left between the outer periphery of the filter basket 3 and the inner wall of the stirring cup 1; a stirring device, wherein the stirring device is driven to rotate by the driving device, and the stirring device comprises a first stirring blade 13, a second stirring blade 15 and a rotating shaft 16, wherein a first end of the rotating shaft 16 is fixedly connected to the first stirring blade 13, wherein the first stirring blade 13 is located between the bottom plate of the filter basket 3 and the bottom plate of the stirring cup 1, and a second end of the rotating shaft 16 is fixedly connected to the second stirring blade 15, wherein the second stirring blade 15 is located in the filter basket 3. In this way, the stirring device includes a first stirring blade 13 and a second stirring blade 15, wherein the first stirring blade 13 is located between the bottom plate of the filter basket 3 and the bottom plate of the stirring cup 1, and can be used to stir the clean water in the stirring cup 1, and the second stirring blade 15 is located in the filter basket 3, and can be used to stir the water and coffee powder mixture in the filter basket 3. Under the double stirring action of the first stirring blade 13 and the second stirring blade 15, the stirring effect is better, which can improve the brewing efficiency of the coffee liquid.

[0031] In this embodiment, the first stirring blade 13 and the second stirring blade 15 are both disc structures, and a plurality of rectangular blades 21 are evenly spaced on the upper surface of the first stirring blade 13, and a groove 27 is formed between the rectangular blades 21 and the axis of the first stirring blade 13, and a plurality of right-angled triangular blades 20 are evenly spaced on the upper surface of the second stirring blade 15, and the hypotenuse 28 of the right-angled triangular blades 20 gradually tilts from high to low from the axis of the second stirring blade 15 to the outer edge of the second stirring blade 15, and the lower surfaces of the first stirring blade 13 and the second stirring blade 15 are both provided with a drainage groove 29. In this arrangement, the centrifugal force generated during the rotation of the first stirring blade 13 is from outside to inside; the centrifugal force generated during the rotation of the second stirring blade 15 is from inside to outside, and the lower surfaces of the first stirring blade 13 and the second stirring blade 15 are both provided with a drainage groove 29, which can improve the stirring effect.

[0032] In this embodiment, the driving device includes a motor 10 and a driving wheel 11, the output end of the motor 10 is fixedly connected to the driving wheel 11, and the driving wheel 11 is arranged in a transmission manner with the first stirring blade 13. In this arrangement, when the motor 10 is working, the driving wheel 11 is driven to rotate, the driving wheel 11 drives the first stirring blade 13 to rotate, the first stirring blade 13 drives the rotating shaft 16 to rotate, and the rotating shaft 16 drives the second stirring blade 15 to rotate, thereby achieving the purpose of dual stirring of the first stirring blade 13 and the second stirring blade 15.

[0033] In this embodiment, the driving wheel 11 is fixed with a first magnet 12, the first stirring blade 13 is fixed with a second magnet 14, and the driving wheel 11 and the first stirring blade 13 are magnetically attracted to each other by the first magnet 12 and the second magnet 14. In this way, the driving wheel 11 and the first stirring blade 13 are driven by the magnetic attraction between the first magnet 12 and the second magnet 14.

[0034] It should be noted that, since magnets cannot pass food grade, the second magnet 14 is fixedly sealed and installed in the first stirring blade 13 so as not to come into contact with the coffee liquid, and the second magnet 14 is wrapped in the plastic first stirring blade 13 by injection molding, or wrapped in the plastic first stirring blade 13 by ultrasonic welding; in actual applications, the number of the first magnet 12 and the second magnet 14 can be set to one, two or more according to actual needs.

[0035] In this embodiment, a locking boss 4 is provided on the inner wall of the mixing cup 1, and a locking groove 8 is provided on the outer wall of the filter basket 3. The locking groove 8 is connected with the locking boss 4, so that the filter basket 3 is suspended in the mixing cup 1. In this way, the filter basket 3 is positioned and suspended in the mixing cup 1 under the locking connection between the locking groove 8 and the locking boss 4; in actual application, under the condition of ensuring normal operation, the bottom of the filter basket 3 is as close to the bottom of the mixing cup 1 as possible, which is conducive to increasing the water soaking area of ​​the filter basket 3.

[0036] In this embodiment, the outer wall of the filter basket 3 is provided with a flange 18 and an elastic member 19 arranged in an upper and lower manner, and a clamping groove 8 is formed between the flange 18 and the elastic member 19. This arrangement facilitates the loading and unloading of the filter basket 3 in the mixing cup 1, and makes it more convenient to clean the mixing cup 1 and the filter basket 3 later.

[0037] In this embodiment, the filter basket 3 includes a filter basket upper cover 22, a stainless steel outer net 23, a stainless steel inner woven net 24 and a filter basket lower cover 25. The stainless steel outer net 23 is wrapped and fixed to the outside of the stainless steel inner woven net 24 to form a filter net body. The upper end of the filter net body is detachably fixedly connected to the filter basket upper cover 22, and the lower end of the filter net body is detachably fixedly connected to the filter basket lower cover 25. A handle 26 is provided on the filter basket upper cover 22. In this way, the filter basket 3 is designed into a double-layer structure, wherein the inner layer is the stainless steel inner woven net 24, which has a small filter hole of 250 mesh and is used for the primary filtration of the coffee liquid; the outer layer is the stainless steel outer net 23, which has a large filter hole and is used to support and fix the stainless steel inner woven net 24, so that it is not easy to deform and to perform secondary filtration of the coffee liquid, and the filtration effect is better; the handle 26 is provided on the filter basket upper cover 22 to facilitate the loading and unloading of the filter basket 3.

[0038] In actual applications, the filter basket upper cover 22, the stainless steel outer net 23, and the stainless steel inner woven net 24 are all hollow circular tube structures, and the filter basket lower cover 25 is a structure with one end open and the other end closed; the detachable fixed connection can be achieved by a threaded structure or a buckle structure, and when the detachable fixed connection is a threaded structure, the rotation direction of the magnet is opposite to the screwing direction of the filter basket lower cover 25, so as to prevent the filter basket lower cover 25 from falling off during operation.

[0039] In this embodiment, the filter basket lower cover 25 is provided with an axial hole, in which a shaft sleeve 17 is fixed, and the shaft sleeve 17 is arranged on the rotating shaft 16, and the rotating shaft 16 can rotate relative to the shaft sleeve 17. This arrangement can make the rotating shaft 16 rotate stably.

[0040] In this embodiment, a positioning groove 9 is provided on the upper surface of the base 2, and the bottom of the blending cup 1 is mounted in the positioning groove 9. In this way, the bottom of the blending cup 1 is limited by the positioning groove 9, so that the blending cup 1 can be prevented from being thrown out of the base 2 during operation, which is safer to use.

[0041] In this embodiment, control knobs 7 and power plugs are symmetrically arranged on both sides of the outer wall of the base 2, and a circuit board is arranged inside the base 2. This arrangement makes reasonable use of the installation space of the base 2, and the control knob 7 and the power plug do not interfere with each other during operation, and the placement and operation are very convenient. The control knob 7 is used to start and stop the motor 10 and control the speed of the motor 10.

[0042] In this embodiment, a cover 5 is detachably mounted on the opening of the stirring cup 1, and a handle 6 is disposed on the outer wall of the stirring cup 1. In this way, the stirring cup 1 can be conveniently mounted and unmounted on the machine base 2 through the handle 6, and the cover 5 can prevent the coffee liquid from splashing out.

[0043] Working principle of this utility model:

[0044] Put clean water into the stirring cup 1, put coffee powder into the filter basket 3, start the motor 10, the motor 10 drives the driving wheel 11 to rotate, the driving wheel 11 drives the first stirring blade 13 to rotate, the first stirring blade 13 drives the rotating shaft 16 to rotate, the rotating shaft 16 drives the second stirring blade 15 to rotate, wherein the first stirring blade 13 is used to stir the clean water in the stirring cup 1, and the second stirring blade 15 is used to stir the clean water and coffee powder mixture in the filter basket 3. Under the double stirring action of the first stirring blade 13 and the second stirring blade 15, the stirring effect is better, which can improve the brewing efficiency of the coffee liquid.

[0045] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which belong to the protection scope of the present invention.

Claims

1. A cold brew coffee machine, characterized in that: include: A machine base, wherein a driving device is arranged in the machine base; A blending cup, wherein the blending cup is detachably mounted on the machine base, a filter basket is detachably mounted in the blending cup, the filter basket is suspended in the blending cup, and a gap is left between the outer periphery of the filter basket and the inner wall of the blending cup; A stirring device, wherein the stirring device is driven to rotate by a driving device, and the stirring device comprises a first stirring blade, a second stirring blade and a rotating shaft, wherein the first end of the rotating shaft is fixedly connected to the first stirring blade, and the first stirring blade is located between the bottom plate of the filter basket and the bottom plate of the stirring cup, and the second end of the rotating shaft is fixedly connected to the second stirring blade, and the second stirring blade is located in the filter basket.

2. A cold brew coffee machine according to claim 1, characterized in that: The first stirring blade and the second stirring blade are both disc structures, a plurality of rectangular blades are evenly spaced on the upper surface of the first stirring blade, and a groove is formed between the rectangular blade and the axis of the first stirring blade, a plurality of right-angled triangular blades are evenly spaced on the upper surface of the second stirring blade, and the hypotenuse of the right-angled triangular blades gradually inclines from high to low from the axis of the second stirring blade to the outer edge of the second stirring blade; the lower surfaces of the first stirring blade and the second stirring blade are both provided with drainage grooves.

3. The cold brew coffee machine according to claim 1, characterized in that: The driving device comprises a motor and a driving wheel. The output end of the motor is fixedly connected to the driving wheel, and the driving wheel is arranged in a transmission manner with the first stirring blade.

4. The cold brew coffee machine according to claim 3, characterized in that: A first magnet is fixed on the driving wheel, a second magnet is fixed in the first stirring blade, and the driving wheel and the first stirring blade are magnetically attracted to each other through the first magnet and the second magnet.

5. The cold brew coffee machine according to claim 1, characterized in that: A locking boss is provided on the inner wall of the mixing cup, and a locking groove is provided on the outer wall of the filter basket. The locking groove is connected with the locking boss so that the filter basket is suspended in the mixing cup.

6. The cold brew coffee machine according to claim 5, characterized in that: The outer wall of the filter basket is provided with a flange and an elastic member arranged up and down, and a clamping groove is formed between the flange and the elastic member.

7. The cold brew coffee machine according to claim 1, characterized in that: The filter basket includes a filter basket upper cover, a stainless steel outer net, a stainless steel inner woven net and a filter basket lower cover. The stainless steel outer net is wrapped and fixed to the outside of the stainless steel inner woven net to form a filter body. The upper end of the filter body is detachably fixedly connected to the filter basket upper cover, and the lower end of the filter body is detachably fixedly connected to the filter basket lower cover. A handle is provided on the filter basket upper cover.

8. The cold brew coffee machine according to claim 7, characterized in that: The filter basket lower cover is provided with an axial hole, a shaft sleeve is fixed in the axial hole, the shaft sleeve is sleeved on the rotating shaft, and the rotating shaft can rotate relative to the shaft sleeve.

9. The cold brew coffee machine according to claim 1, characterized in that: A positioning groove is provided on the upper surface of the machine base, and the bottom of the stirring cup is mounted in the positioning groove.

10. The cold brew coffee machine according to claim 9, characterized in that: Control knobs and power plugs are symmetrically arranged on both sides of the outer wall of the base, and a circuit board is arranged inside the base.

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