Cold water coffee brewing machine

Abstract

The utility model relates to the technical field of coffee machines, in particular to a cold water 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 rotatably arranged in the stirring cup, and a gap is reserved between the periphery of the filter basket and the inner wall of the stirring cup; the filter basket is driven by a driving device to rotate, a shaft sleeve is fixed on a bottom plate of the filter basket, stirring blades are fixed on the shaft sleeve and located in the filter basket, a rotating shaft is fixed on a bottom plate of the stirring cup, the upper end of the rotating shaft and the shaft sleeve are arranged in a limiting mode, the shaft sleeve can rotate relative to the rotating shaft, and the lower end of the rotating shaft is located between the stirring cup and the machine base. According to the arrangement, the stirring blades and the filter basket are fixed into a whole through the shaft sleeve, the whole filter basket rotates relative to the stirring cup under the driving action of the driving device, the stirring effect is better, 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 water brewing 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. However, the prior art stirs the inside of the filter liner with the stirring blade, and the stirring efficiency is low, which in turn affects 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 water coffee brewing machine, in which a stirring blade and a filter basket are fixed as a whole through a shaft sleeve. Under the driving action of a driving device, the filter basket as a whole rotates relative to the stirring cup, so that 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 water 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, a filter basket is detachably mounted in the stirring cup, the filter basket is rotatably arranged 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; the filter basket is driven to rotate by the driving device, a shaft sleeve is fixed on the bottom plate of the filter basket, a stirring blade is fixed on the shaft sleeve, the stirring blade is located in the filter basket, a rotating shaft is fixed on the bottom plate of the stirring cup, an upper end of the rotating shaft and the shaft sleeve are limited, the shaft sleeve can rotate relative to the rotating shaft, and a lower end of the rotating shaft is located between the stirring cup and the machine base.

[0008] According to the above solution, a limiting groove is provided in the shaft sleeve, and the upper end of the rotating shaft is inserted into the limiting groove.

[0009] According to the above scheme, a through hole is provided on the bottom plate of the mixing cup, the lower end of the rotating shaft passes through the through hole and is located between the mixing cup and the base, a sealing ring is provided between the rotating shaft and the bottom plate of the mixing cup, and a central groove is provided on the base to cooperate with the lower end of the rotating shaft.

[0010] 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, the lower end of the filter body is detachably fixedly connected to the filter basket lower cover, the shaft sleeve is fixed at the center position of the filter basket lower cover, and a handle is provided on the filter basket upper cover.

[0011] According to the above solution, a plurality of lower drainage grooves are formed on the outer wall of the filter basket lower cover.

[0012] According to the above solution, a limiting sleeve is provided on the inner wall of the mixing cup, the inner wall of the limiting sleeve is arranged corresponding to the outer wall of the filter basket, and the filter basket can rotate relative to the limiting sleeve.

[0013] 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 to transmit the stirring blade.

[0014] According to the above solution, a lower magnet is fixed on the driving wheel, an upper magnet is fixed inside the stirring blade, and the driving wheel and the stirring blade are magnetically attracted to each other through the lower magnet and the upper magnet.

[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 stirring cup 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 configured such that the stirring blade and the filter basket are fixed as a whole through the shaft sleeve. Under the driving action of the driving device, the filter basket as a whole rotates relative to the stirring cup, the stirring effect is better, and the brewing efficiency of the coffee liquid can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 It 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 This is an exploded view of the filter basket of the utility model;

[0024] Figure 5 It is a bottom view of the filter basket of the utility model.

[0025] In the figure:

[0026] 1. Mixing cup; 2. Machine base; 3. Filter basket; 4. Filter basket upper cover; 5. Mixing cup cover; 6. Handle; 7. Control knob; 8. Rotating shaft; 9. Positioning slot; 10. Motor; 11. Driving wheel; 12. Lower magnet; 13. Mixing blade; 14. Upper magnet; 15. Bushing; 16. Sealing ring; 17. Limiting slot; 18. Center slot; 19. Filter basket lower cover; 20. Limiting sleeve; 21. Stainless steel outer net; 22. Stainless steel inner woven net; 23. Handle; 24. Lower drain trough. DETAILED DESCRIPTION

[0027] The technical solution of the utility model is described below in conjunction with the accompanying drawings and embodiments.

[0028] like Figures 1 to 5As shown, the cold water coffee machine described in the utility model comprises a machine base 2, in which a driving device is arranged; a stirring cup 1, in which the stirring cup 1 is detachably mounted on the machine base 2, a filter basket 3 is detachably mounted in the stirring cup 1, and the filter basket 3 is rotatably arranged 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; the filter basket 3 is driven to rotate by the driving device, a shaft sleeve 15 is fixed on the bottom plate of the filter basket 3, a stirring blade 13 is fixed on the shaft sleeve 15, and the stirring blade 13 is located in the filter basket 3, and a rotating shaft 8 is fixed on the bottom plate of the stirring cup 1, and the upper end of the rotating shaft 8 is limitedly arranged with the shaft sleeve 15, and the shaft sleeve 15 can rotate relative to the rotating shaft 8, and the lower end of the rotating shaft 8 is located between the stirring cup 1 and the machine base 2. In this arrangement, the stirring blade 13 and the filter basket 3 are fixed as a whole through the shaft sleeve 15, and under the driving action of the driving device, the filter basket 3 rotates relative to the stirring cup 1 as a whole, and the stirring effect is better, which can improve the brewing efficiency of the coffee liquid.

[0029] In this embodiment, a limiting groove 17 is provided in the shaft sleeve 15, and the upper end of the rotating shaft 8 is inserted into the limiting groove 17. In this way, when the filter basket 3 is assembled in the mixing cup 1, the limiting groove 17 of the shaft sleeve 15 is sleeved on the upper end of the rotating shaft 8, or the upper end of the rotating shaft 8 on the mixing cup 1 is inserted into the limiting groove 17, so that the filter basket 3 can be rotatably arranged in the mixing cup 1.

[0030] In this embodiment, a through hole is provided on the bottom plate of the mixing cup 1, and the lower end of the rotating shaft 8 passes through the through hole and is located between the mixing cup 1 and the base 2. A sealing ring 16 is provided between the rotating shaft 8 and the bottom plate of the mixing cup 1, and a central groove 18 is provided on the base 2 to cooperate with the lower end of the rotating shaft 8. In this way, the sealing ring 16 prevents the liquid in the mixing cup 1 from overflowing; by providing the central groove 18 on the base 2 to cooperate with the lower end of the rotating shaft 8, the central groove 18 can position the rotating shaft 8 and serve as a concentric rotation fulcrum for the mixing cup 1 and the filter basket 3.

[0031] In this embodiment, the filter basket 3 includes a filter basket upper cover 4, a stainless steel outer net 21, a stainless steel inner braided net 22 and a filter basket lower cover 19. The stainless steel outer net 21 is wrapped and fixed to the outside of the stainless steel inner braided net 22 to form a filter net body. The upper end of the filter net body is detachably fixedly connected to the filter basket upper cover 4, and the lower end of the filter net body is detachably fixedly connected to the filter basket lower cover 19. The shaft sleeve 15 is fixed to the center of the filter basket lower cover 19. A handle 23 is provided on the filter basket upper cover 4. In this way, the filter basket 3 is designed into a double-layer structure, wherein the inner layer is the stainless steel inner braided net 22, which has a relatively 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 21, which has a relatively large filter hole, and is used to support and fix the stainless steel inner braided net 22, so that it is not easily deformed and performs secondary filtration of the coffee liquid, and the filtration effect is better, wherein the handle 23 facilitates the loading and unloading of the filter basket 3.

[0032] In actual applications, the filter basket upper cover 4, the stainless steel outer net 21 and the stainless steel inner woven net 22 are all hollow circular tube structures, and the filter basket lower cover 19 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 19, so as to prevent the filter basket lower cover 19 from falling off during operation.

[0033] In this embodiment, a plurality of lower drainage grooves 24 are formed on the outer wall of the filter basket lower cover 19. In this way, under the action of the lower drainage grooves 24, the stirring and mixing effect is better.

[0034] In this embodiment, a limiting sleeve 20 is provided on the inner wall of the mixing cup 1, and the inner wall of the limiting sleeve 20 is arranged corresponding to the outer wall of the filter basket 3, and the filter basket 3 can rotate relative to the limiting sleeve 20. In this way, when the filter basket 3 is installed in the mixing cup 1, the limiting sleeve 20 limits the filter basket 3, so that the filter basket 3 and the mixing cup 1 are arranged concentrically.

[0035] 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 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 stirring blade 13 to rotate, the stirring blade 13 drives the shaft sleeve 15 to rotate, and the shaft sleeve 15 drives the filter basket 3 to rotate, thereby achieving the purpose of the driving device driving the filter basket 3 to rotate.

[0036] In this embodiment, a lower magnet 12 is fixed on the driving wheel 11, an upper magnet 14 is fixed inside the stirring blade 13, and the driving wheel 11 and the stirring blade 13 are magnetically attracted to each other by the lower magnet 12 and the upper magnet 14. In this way, the driving wheel 11 and the stirring blade 13 are driven by the magnetic attraction between the lower magnet 12 and the upper magnet 14.

[0037] It should be noted that, since magnets cannot pass food grade, the upper magnet 14 is fixedly sealed and installed in the stirring blade 13 so as not to come into contact with the coffee liquid, and the upper magnet 14 is wrapped in the plastic stirring blade 13 by injection molding or by ultrasonic welding. In actual applications, the number of the lower magnet 12 and the upper magnet 14 can be set to one, two or more according to actual needs.

[0038] 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.

[0039] 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.

[0040] In this embodiment, a stirring cup cover 5 is detachably mounted on the opening of the stirring cup 1, and a handle 6 is provided on the outer wall of the stirring cup 1. In this way, the stirring cup 1 can be conveniently loaded and unloaded on the machine base 2 through the handle 6; the stirring cup cover 5 is used to open or close the opening of the stirring cup 1, which is convenient for adding water and preventing coffee liquid from splashing during operation. In actual application, the stirring cup cover 5 and the opening of the stirring cup 1 are arranged to be locked. When the stirring cup cover 5 is covered on the opening of the stirring cup 1, it is rotated at a certain angle to achieve locking. When disassembling, it can be reversed at a certain angle, which is convenient for loading and unloading, and a loading and unloading guide mark is provided on the stirring cup cover 5.

[0041] Working principle of this utility model:

[0042] 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 stirring blade 13 to rotate, the stirring blade 13 drives the shaft sleeve 15 to rotate, the shaft sleeve 15 drives the filter basket 3 to rotate, the filter basket 3 rotates as a whole relative to the stirring cup 1, the stirring effect is better, and the brewing efficiency of the coffee liquid can be improved.

[0043] 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 water coffee machine, characterized in that: include: A base, wherein the base is provided with a drive device; 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 rotatably disposed 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; The filter basket is driven to rotate by a driving device, a shaft sleeve is fixed on the bottom plate of the filter basket, a stirring blade is fixed on the shaft sleeve, the stirring blade is located in the filter basket, a rotating shaft is fixed on the bottom plate of the stirring cup, the upper end of the rotating shaft and the shaft sleeve are limited, the shaft sleeve can rotate relative to the rotating shaft, and the lower end of the rotating shaft is located between the stirring cup and the machine base.

2. A cold water coffee machine according to claim 1, characterized in that: A limiting groove is arranged in the shaft sleeve, and the upper end of the rotating shaft is inserted into the limiting groove.

3. The cold water coffee machine according to claim 1, characterized in that: A through hole is provided on the bottom plate of the mixing cup, the lower end of the rotating shaft passes through the through hole and is located between the mixing cup and the base, a sealing ring is provided between the rotating shaft and the bottom plate of the mixing cup, and a central groove is provided on the base to cooperate with the lower end of the rotating shaft.

4. The cold water 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. The shaft sleeve is fixed at the center position of the filter basket lower cover, and a handle is provided on the filter basket upper cover.

5. The cold water coffee machine according to claim 4, characterized in that: A plurality of lower drainage grooves are formed on the outer wall of the filter basket lower cover.

6. The cold water coffee machine according to claim 1, characterized in that: A limiting sleeve is arranged on the inner wall of the mixing cup, the inner wall of the limiting sleeve is arranged corresponding to the outer wall of the filter basket, and the filter basket can rotate relative to the limiting sleeve.

7. The cold water 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 stirring blade.

8. The cold water coffee machine according to claim 7, characterized in that: A lower magnet is fixed on the driving wheel, an upper magnet is fixed in the stirring blade, and the driving wheel and the stirring blade are magnetically attracted to each other through the lower magnet and the upper magnet.

9. The cold water 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 water coffee machine according to claim 1, 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.

11. The cold water coffee machine according to claim 1, characterized in that: A stirring cup cover is detachably mounted on the opening of the stirring cup, and a handle is arranged on the outer wall of the stirring cup.

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