Cold extraction coffee machine

Abstract

The utility model discloses a cold extraction coffee machine which comprises a shell. The coffee container is provided with a cavity used for containing coffee liquid. The liquid outlet is communicated with the cavity; the piston mechanism is arranged in the cavity and serves as the bottom of the cavity; the driving mechanism is used for driving the piston mechanism to lift in a reciprocating manner; the refrigeration module is arranged at the bottom of the piston mechanism and moves synchronously with the piston mechanism; the refrigerating module refrigerates coffee liquid in the cavity through the piston mechanism, and the driving mechanism drives the piston mechanism to ascend so as to extrude the coffee liquid out of the liquid outlet. According to the cold extraction coffee machine, a mechanical squeezing mode that the driving mechanism drives the piston mechanism to ascend is adopted, compared with a mode that a transmission pressure water pump is used for water pressure extraction, the pressure is larger, a finer filter screen can be used, coffee liquid is finer, the extraction speed is higher, and cold extraction coffee with the concentration reaching about 1.5 can be rapidly extracted.

Description

Technical Field

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

[0002] Cold brew coffee is one of the coffee drinks in demand at present. The mainstream production method is to add ice cubes after hot brewing. The TDS value of the coffee concentration is about 1.8. Other cold brew methods include ordinary cold brew, pulse cold brew, cold water immersion, ice drip, etc. The concentration of ordinary cold brew is about 1.2, and the concentration of pulse cold brew is about 1.3. The concentration is too low, the taste is poor, and the waiting time for production is too long. In addition, during the production process, the temperature of the ice water is lost, and the temperature of the coffee is not cool enough. Utility Model Content

[0003] In order to solve the above problems, the present technical solution provides a cold brew coffee machine.

[0004] To achieve the above purpose, the technical solution is as follows:

[0005] A cold brew coffee machine comprising

[0006] case;

[0007] A coffee container having a cavity for containing coffee liquid;

[0008] a liquid outlet, which is in communication with the cavity;

[0009] A piston mechanism, which is disposed in the cavity and serves as the bottom of the cavity;

[0010] A driving mechanism, used for driving the piston mechanism to reciprocate and rise and fall;

[0011] A refrigeration module, which is arranged at the bottom of the piston mechanism and moves synchronously with it;

[0012] The refrigeration module refrigerates the coffee liquid in the cavity through the piston mechanism, and the driving mechanism drives the piston mechanism to rise to squeeze the coffee liquid toward the liquid outlet.

[0013] A cold brew coffee machine as described above, the cold brew coffee machine also includes a cover body, a top cavity is provided on the cover body, the liquid outlet is connected to the top cavity, and a filter is provided therebetween, the cover body covers the coffee container to serve as the top of the cavity, and the cavity is connected to the top cavity.

[0014] In the cold brew coffee machine as described above, a sealing ring is provided between the shell and the coffee container, and the cover body is rotatably engaged with the shell so that when the cover body is closed, the sealing ring fills the gap between the cover body and the coffee container.

[0015] In a cold brew coffee machine as described above, the piston mechanism includes a lifting rod, a base plate arranged on the lifting rod, and a piston sleeve surrounding the lifting rod and the base plate, and an installation space for accommodating the refrigeration module is provided between the lifting rod and the base plate.

[0016] In the cold brew coffee machine as described above, the refrigeration module includes a semiconductor refrigeration plate arranged at the bottom of the base plate, a heat sink arranged at the bottom of the semiconductor refrigeration plate, and a heat dissipation fan arranged at the bottom of the heat sink.

[0017] In a cold brew coffee machine as described above, the driving mechanism includes a motor, a gear set cooperating with the motor, and a driving wheel cooperating with the gear set, the driving wheel is provided with a threaded hole, and the threaded hole is threadedly cooperating with the lifting rod for lifting.

[0018] In the cold brew coffee machine as described above, a lower support member and an upper support member arranged on the lower support member are provided in the shell, the driving wheel is arranged between the upper support member and the lower support member, and the upper support member is used to support the coffee container.

[0019] In a cold brew coffee machine as described above, the upper support member is provided with an upper heat dissipation channel, the lower support member is provided with a lower heat dissipation channel, the lifting rod is provided with a heat dissipation hole connected to the installation space, and the heat dissipation hole, the upper heat dissipation channel and the lower heat dissipation channel are connected to discharge heat.

[0020] In the cold brew coffee machine as described above, the shell is provided with a buckle groove, and the cover is provided with a buckle position. After the cover is covered with the shell, the cover rotates relative to the shell so that the buckle position enters the buckle groove.

[0021] In the cold brew coffee machine as described above, the shell includes a positioning ring, and the sealing ring includes a main body, a positioning groove provided on the main body and matching with the positioning ring sleeve.

[0022] The beneficial effects of this application are:

[0023] The utility model provides a cold brew coffee machine, which adopts a mechanical pressing method in which a driving mechanism drives a piston mechanism to rise. The pressure is greater than that of a hydraulic extraction method using a transmission pressure water pump, and a finer filter can be used, making the coffee liquid more delicate and the extraction speed faster. Cold brew coffee with a concentration of about 1.5 can be quickly extracted. During this process, the refrigeration module maintains refrigeration, keeps the temperature of the coffee liquid lower, and can ensure that the low temperature does not lose, so that the cold brew coffee is made faster and tastes better. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0025] Figure 1 It is a half-section view of an embodiment of the utility model;

[0026] Figure 2 yes Figure 1 Enlarged view of point A. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] A cold brew coffee machine comprising

[0029] Housing 7;

[0030] A coffee container 1 is provided with a cavity 11 for containing coffee liquid;

[0031] a liquid outlet 2, which is in communication with the cavity 11;

[0032] A piston mechanism 3, which is disposed in the cavity 11 and serves as the bottom of the cavity 11;

[0033] A driving mechanism 4, which is used to drive the piston mechanism 3 to reciprocate and rise and fall;

[0034] A refrigeration module 5, which is arranged at the bottom of the piston mechanism 3 and moves synchronously therewith;

[0035] The refrigeration module 5 refrigerates the coffee liquid in the cavity 11 through the piston mechanism 3 , and the driving mechanism 4 drives the piston mechanism 3 to rise to squeeze the coffee liquid toward the liquid outlet 2 .

[0036] The utility model provides a cold brew coffee machine, which adopts a mechanical pressing method in which a driving mechanism drives a piston mechanism to rise. The pressure is greater than that of a hydraulic extraction method using a transmission pressure water pump, and a finer filter can be used, making the coffee liquid more delicate and the extraction speed faster. Cold brew coffee with a concentration of about 1.5 can be quickly extracted. During this process, the refrigeration module maintains refrigeration, keeps the temperature of the coffee liquid lower, and can ensure that the low temperature does not lose, so that the cold brew coffee is made faster and tastes better.

[0037] Further, as a preferred embodiment of the present solution but not limiting, the cold brew coffee machine further comprises a cover body 6, a top cavity 60 is provided on the cover body 6, the liquid outlet 2 is communicated with the top cavity 60, and a filter screen 62 is provided between the two, the cover body 6 is covered with the coffee container 1 to serve as the top of the cavity 11, and the cavity 11 is communicated with the top cavity 60. When the piston mechanism is squeezed, the coffee liquid or the mixture with the coffee powder gradually rises until it is pressed in the top cavity, the filter screen is isolated from the coffee grounds, and the coffee liquid is squeezed out of the liquid outlet.

[0038] Further, as a preferred embodiment of the present solution but not limiting, a sealing ring 8 is provided between the housing 7 and the coffee container 1, and the cover 6 is rotatably engaged with the housing 7, so that when the cover 6 is closed, the sealing ring 8 fills the gap between the cover 6 and the coffee container 1. The rotatable engagement is simple to operate, and the sealing ring can prevent the coffee liquid from overflowing.

[0039] Furthermore, as a preferred embodiment of the present invention but not a limitation, the piston mechanism 3 includes a lifting rod 31, a base plate 32 arranged on the lifting rod 31, and a piston sleeve 33 surrounding the lifting rod 31 and the base plate 32, and an installation space 34 for accommodating the refrigeration module 5 is provided between the lifting rod 31 and the base plate 32.

[0040] Further, as a preferred embodiment of the present solution but not limiting, the refrigeration module 5 includes a semiconductor refrigeration plate 51 disposed at the bottom of the bottom plate 32, a heat sink 52 disposed at the bottom of the semiconductor refrigeration plate 51, and a heat dissipation fan 53 disposed at the bottom of the heat sink 52. The refrigeration is maintained to limit the temperature rise of the coffee liquid.

[0041] Further, as a preferred embodiment of the present solution but not limiting, the driving mechanism 4 includes a motor 41, a gear set 42 matched with the motor 41, and a driving wheel 43 matched with the gear set 42, wherein the driving wheel 43 is provided with a threaded hole 431, and the threaded hole 431 is threadedly matched with the lifting rod 31 for lifting. The motor drives the driving wheel to rotate through the gear set, and the driving wheel rotates to drive the lifting rod to lift.

[0042] Further, as a preferred embodiment of the present invention but not limiting, a lower support member 71 and an upper support member 72 provided on the lower support member 71 are provided in the housing 7, the driving wheel 43 is provided between the upper support member 72 and the lower support member 71, and the upper support member 72 is used to support the coffee container 1. The upper support member supports the lower part of the coffee container, and the housing supports the upper part of the coffee container.

[0043] Furthermore, as a preferred embodiment of the present invention but not a limitation, the upper support member 72 is provided with an upper heat dissipation channel 721, the lower support member 71 is provided with a lower heat dissipation channel 722, the lifting rod 31 is provided with a heat dissipation hole 311 connected to the installation space 34, and the heat dissipation hole 311, the upper heat dissipation channel 721 and the lower heat dissipation channel 722 are connected to discharge heat.

[0044] Furthermore, as a preferred implementation manner of the present solution but not a limitation, a buckle groove 73 is provided on the shell 7, and a buckle position 61 is provided on the cover body 6. After the cover body 6 is covered with the shell 7, the cover body 6 rotates relative to the shell 7 so that the buckle position 61 enters the buckle groove 73.

[0045] Further, as a preferred embodiment of the present invention but not limiting, the housing 7 includes a positioning ring 74, and the sealing ring 8 includes a main body 81, and a positioning groove 82 provided on the main body 81 and matching with the positioning ring 74 for easy installation.

[0046] Further, as a preferred embodiment of the present invention but not limiting, the sealing ring 8 also includes a flange 83 protruding from the top of the main body, and grooves 84 symmetrically arranged on both sides of the main body, and the two flanges are distributed in inner and outer circles. The flange is used to form a sealing effect between the bottom of the cover and the top of the shell. The flange is triangular. When the cover is closed, the flange is squeezed to achieve a sealing effect. When the flange is squeezed, it sinks downward, causing the two sides of the groove to deform, thereby forming a sealing effect between the shell and the coffee container.

[0047] Further, as a preferred embodiment of the present invention but not limiting, the coffee container is tilted, the cavity opening has a lowest point, and the liquid outlet is arranged corresponding to the lowest point. The piston mechanism is tilted accordingly, and after the piston mechanism rises to the lowest point, the coffee liquid is discharged to avoid residue.

[0048] Furthermore, as a preferred embodiment of the present invention but not limiting, it further includes a connecting portion 91 disposed on the upper portion of the coffee container and connected to the shell, wherein the connecting portion extends outward from the outer periphery of the coffee container along the radial direction of the coffee container. The sealing ring is located between the shell and the coffee container and is spaced apart from the connecting portion. The sealing ring separates the shell and the coffee container so that the two are spaced apart and the shell is only connected to the connecting portion, which is conducive to reducing heat conduction and keeping the coffee liquid in the cavity at a low temperature.

[0049] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application. Other principles and basic structures that are the same or similar to those of the present application are within the protection scope of the present application.

Claims

1. A cold brew coffee machine, characterized in that: include Housing (7); A coffee container (1) provided with a cavity (11) for containing coffee liquid; a liquid outlet (2) which is in communication with the cavity (11); A piston mechanism (3) is disposed in the cavity (11) and serves as the bottom of the cavity (11); A driving mechanism (4) for driving the piston mechanism (3) to reciprocate and ascend; A refrigeration module (5), which is arranged at the bottom of the piston mechanism (3) and moves synchronously therewith; The refrigeration module (5) cools the coffee liquid in the cavity (11) through the piston mechanism (3), and the driving mechanism (4) drives the piston mechanism (3) to rise so as to squeeze the coffee liquid toward the liquid outlet (2).

2. A cold brew coffee machine according to claim 1, characterized in that: The cold brew coffee machine also includes a cover body (6), a top cavity (60) is provided on the cover body (6), the liquid outlet (2) is connected to the top cavity (60), and a filter net (62) is provided between the two, the cover body (6) and the coffee container (1) are covered to serve as the top of the cavity (11), and the cavity (11) is connected to the top cavity (60).

3. A cold brew coffee machine according to claim 2, characterized in that: A sealing ring (8) is provided between the shell (7) and the coffee container (1), and the cover (6) and the shell (7) are rotatably engaged with each other so that when the cover (6) is closed, the sealing ring (8) fills the gap between the cover (6) and the coffee container (1).

4. The cold brew coffee machine according to claim 1, characterized in that: The piston mechanism (3) comprises a lifting rod (31), a base plate (32) arranged on the lifting rod (31), and a piston sleeve (33) surrounding the lifting rod (31) and the base plate (32), and an installation space (34) for accommodating the refrigeration module (5) is provided between the lifting rod (31) and the base plate (32).

5. The cold brew coffee machine according to claim 4, characterized in that: The refrigeration module (5) comprises a semiconductor refrigeration plate (51) arranged at the bottom of the base plate (32), a heat sink (52) arranged at the bottom of the semiconductor refrigeration plate (51), and a heat dissipation fan (53) arranged at the bottom of the heat sink (52).

6. The cold brew coffee machine according to claim 4, characterized in that: The driving mechanism (4) comprises a motor (41), a gear set (42) matched with the motor (41), and a driving wheel (43) matched with the gear set (42); the driving wheel (43) is provided with a threaded hole (431); the threaded hole (431) is threadably matched with the lifting rod (31) to perform lifting.

7. The cold brew coffee machine according to claim 6, characterized in that: The shell (7) is provided with a lower support member (71) and an upper support member (72) provided on the lower support member (71); the driving wheel (43) is provided between the upper support member (72) and the lower support member (71); the upper support member (72) is used to support the coffee container (1).

8. The cold brew coffee machine according to claim 7, characterized in that: The upper support member (72) is provided with an upper heat dissipation channel (721), the lower support member (71) is provided with a lower heat dissipation channel (722), the lifting rod (31) is provided with a heat dissipation hole (311) connected to the installation space (34), and the heat dissipation hole (311), the upper heat dissipation channel (721) and the lower heat dissipation channel (722) are connected to discharge heat.

9. The cold brew coffee machine according to claim 2, characterized in that: The shell (7) is provided with a buckle groove (73), and the cover body (6) is provided with a buckle position (61). After the cover body (6) and the shell (7) are covered, the cover body (6) rotates relative to the shell (7) so that the buckle position (61) enters the buckle groove (73).

10. The cold brew coffee machine according to claim 3, characterized in that: The housing (7) comprises a positioning ring (74), and the sealing ring (8) comprises a main body (81) and a positioning groove (82) provided on the main body (81) and sleeved with the positioning ring (74).

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