Efficient coffee cold extraction device and cold extraction cooling method

Abstract

The invention discloses an efficient coffee cold extraction device and a cold extraction cooling method in the technical field of coffee preparation, an extraction assembly and a cup base assembly are arranged on a machine base of the device, the extraction assembly is connected with an extraction water way, the extraction water way is connected with a second heat exchange device, and the second heat exchange device is used for conducting heat exchange cooling on liquid in the extraction water way; the cup base assembly comprises a first heat exchange device used for conducting heat exchange and cooling on the coffee cup on the cup base assembly, and the heat obtained after heat exchange is conducted is subjected to water-cooling heat dissipation; in the extraction process, the second heat exchange device cools the liquid in the extraction water path, so that the liquid reaches the extraction temperature; in the coffee liquid collecting and storing process, the first heat exchange device cools the coffee cup to enable the coffee cup to reach the storage temperature. The drinking taste of cold extraction coffee can be guaranteed, meanwhile, through drinking of the water cooling loop, the heat dissipation efficiency can be improved, meanwhile, noise can be lowered, space can be saved, and the experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coffee preparation, and in particular to a high-efficiency cold-brew coffee device and a cold-brew cooling method. Background Art

[0002] Compared with traditional hot brewed coffee, cold brewed coffee can better retain the aroma and flavor of coffee beans, making the coffee taste mellower and softer. At the same time, cold brewed coffee also has the characteristics of low acidity and low caffeine, so cold brewed coffee is popular among people. Cold brewed coffee is obtained through cold brewing coffee machines. Existing cold brewing coffee machines refrigerate drinking water and obtain coffee liquid through pulse extraction technology.

[0003] In order to obtain drinking water at a lower temperature, existing cold brew coffee machines use a refrigeration module to cool and lower the temperature of drinking water. However, the refrigeration module will generate a lot of heat while cooling the drinking water. If this heat cannot be dissipated, it will affect the refrigeration efficiency of the refrigeration module. For this reason, existing cold brew coffee machines mostly use a heat sink + fan to take away the heat of the refrigeration module. For example, the utility model patent with announcement number CN 220236638 U discloses a multifunctional coffee machine, which is equipped with a refrigeration module. The refrigeration module can cool water and control the cold water solenoid valve to open and close the cold water, thereby achieving the brewing of cold coffee. The refrigeration module includes a new semiconductor refrigeration product, a cooling plate, a heat dissipation base and a heat dissipation fan. Under the action of the heat dissipation fan, the outside air enters the accommodating cavity and blows to the heat dissipation base to achieve cooling, and then the heated air is discharged into the outside air.

[0004] However, the use of heat sinks and cooling fans in this type of structure has low heat dissipation efficiency and high cost, which affects the heat dissipation of the refrigeration module, and further affects the refrigeration efficiency of the refrigeration module, making it difficult to ensure the taste of the cold-brewed coffee liquid. At the same time, the heat sink and cooling fan occupy a large volume, and the installation position in the cold-brew coffee machine is limited, which is not conducive to the design of a miniaturized coffee machine. In addition, heat dissipation through heat sinks and cooling fans is noisy and the user experience is not good.

[0005] In addition, after the existing cold brew coffee is prepared, the coffee liquid returns to temperature quickly, which affects the drinking taste. The lack of effective heat preservation measures also affects the user experience.

[0006] The above defects are worth solving. Summary of the invention

[0007] In order to overcome the shortcomings of the existing technology, the present invention provides a high-efficiency cold brew coffee device and a cold brew cooling method, which respectively refrigerates drinking water and keeps coffee liquid warm through two heat exchange devices to ensure the drinking taste of the cold brew coffee, and at the same time realizes heat exchange of the heat exchange devices through a water cooling circuit, which can not only improve the heat dissipation efficiency, but also reduce noise, save space, and enhance the user experience.

[0008] The technical solution of the present invention is as follows:

[0009] A high-efficiency cold brew coffee device, comprising a machine base, characterized in that the machine base is provided with:

[0010] An extraction assembly connected to an extraction water channel, wherein the extraction water channel is connected to one or more second heat exchange devices, wherein the second heat exchange devices are used to exchange heat and cool the liquid in the extraction water channel, and the heat after the heat exchange is dissipated by water cooling;

[0011] The cup holder assembly comprises a first heat exchange device, wherein the first heat exchange device is used to exchange heat and cool down the coffee cup on the cup holder assembly, and the heat after the heat exchange is dissipated by water cooling.

[0012] The present invention according to the above scheme is characterized in that the second heat exchange device includes a refrigeration component and a second refrigeration fin, the extraction water path passes through the refrigeration component, the refrigeration component is connected to the cold end of the second refrigeration fin, and is used to cool the liquid in the extraction water path through the second refrigeration fin, and the hot end of the second refrigeration fin is connected to the water cooling circuit.

[0013] Furthermore, a second heat exchange component is provided on the water cooling circuit, and the second heat exchange component is connected to the hot end of the second refrigeration fin to absorb the heat of the second refrigeration fin.

[0014] The present invention according to the above scheme is characterized in that the first heat exchange device includes a first refrigeration fin, a cold end of the first refrigeration fin is connected to the bottom support plate of the cup holder assembly, and is used to cool the bottom support plate through the first refrigeration fin, and a hot end thereof is connected to a water cooling circuit.

[0015] Furthermore, a first heat exchange component is provided on the water cooling circuit, and the first heat exchange component is connected to the hot end of the first refrigeration fin to absorb the heat of the first refrigeration fin.

[0016] The present invention according to the above scheme is characterized in that a cooling water tank is provided on the machine base:

[0017] The water cooling circuit in the first heat exchange device is connected in series with the water cooling circuit in the second heat exchange device, and both ends of the circuit are connected to the water outlet interface and the water inlet interface of the cooling water tank;

[0018] Or, the water cooling circuit in the first heat exchange device is connected in parallel with the water cooling circuit in the second heat exchange device, so that both ends of the water cooling circuit in the first heat exchange device are connected to the water outlet interface and water inlet interface of the cooling water tank, and both ends of the water cooling circuit in the second heat exchange device are connected to the water outlet interface and water inlet interface of the cooling water tank.

[0019] Furthermore, the cooling water tank includes a water outlet tank and a water inlet tank, the water outlet tank is connected to the cold water inlet of the water cooling circuit in the first heat exchange device and the cold water inlet of the water cooling circuit in the second heat exchange device, and the water inlet tank is connected to the hot water outlet of the water cooling circuit in the first heat exchange device and the hot water outlet of the water cooling circuit in the first heat exchange device.

[0020] On the other hand, a cold extraction cooling method of a high-efficiency cold extraction coffee device is provided, characterized in that, based on the above-mentioned high-efficiency cold extraction coffee device, the extraction cooling method comprises:

[0021] During the extraction process, the second heat exchange device cools the liquid in the extraction water path to the extraction temperature; during the coffee liquid collection and storage process, the first heat exchange device cools the coffee cup on the cup holder assembly to the storage temperature.

[0022] The present invention according to the above scheme is characterized in that, during the extraction process, the extraction temperature is determined, and the second refrigeration plate is controlled according to the extraction temperature to cool the liquid flowing through the refrigeration component, so that the liquid in the extraction water path reaches the required temperature; at the same time, the liquid in the water cooling circuit flowing through the second heat exchange component is driven to circulate, so as to exchange heat with the second refrigeration plate through the second heat exchange component.

[0023] The present invention according to the above scheme is characterized in that, during the process of collecting and storing the coffee liquid, the coffee liquid collection and storage temperature is determined, and based on the temperature, the first refrigeration plate is controlled to cool the bottom support plate in the cup holder assembly, so that the coffee liquid in the coffee cup on the bottom support plate is stabilized at a desired temperature; at the same time, the liquid in the water cooling circuit flowing through the first heat exchange component is driven to circulate, so as to exchange heat with the first refrigeration plate through the first heat exchange component.

[0024] The present invention according to the above scheme has the following beneficial effects:

[0025] The present invention cools drinking water through a first cooling plate and cools a base where a coffee cup is located through a second cooling plate, which can not only realize cold extraction of coffee liquid, but also ensure the storage temperature of the cold extracted coffee liquid, so that the coffee liquid maintains the best drinking taste for a long time.

[0026] The present invention realizes heat dissipation and temperature reduction of the first refrigeration plate and the second refrigeration plate respectively through a water cooling circuit, which can not only take away the heat of the refrigeration plates, but also the water cooling heat dissipation method has low cost and small size, which is conducive to production and application; at the same time, compared with traditional air cooling heat dissipation, the water cooling heat dissipation method improves its heat dissipation efficiency and is conducive to noise control, thereby enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 This is a schematic diagram of the extraction component of the present invention in an open state;

[0029] Figure 3 A top view of the present invention;

[0030] Figure 4 for Figure 3 Partial cross-sectional view along the AA direction;

[0031] Figure 5 is an exploded view of the cup holder assembly of the present invention;

[0032] Figure 6 is a cross-sectional view of the first heat exchange component in the present invention;

[0033] Figure 7 for Figure 3 Partial cross-sectional view along the BB direction;

[0034] Figure 8 It is a schematic diagram of the extraction refrigeration part of the present invention;

[0035] Fig. 9 A schematic diagram of another perspective of the extraction refrigeration part of the present invention;

[0036] Fig.10 It is an exploded view of the circuit board assembly and the first extraction refrigeration part of the present invention;

[0037] Fig.11 It is a cross-sectional view of the cold absorption component in the present invention;

[0038] Fig.12 for Figure 3 Partial cross-sectional view along CC direction.

[0039] In the drawings, the reference numerals are:

[0040] 10. Machine base;

[0041] 20. Cooling water tank; 21. Water outlet tank; 22. Water inlet tank; 23. Baffle; 24. Reflux channel; 25. Water outlet interface; 26. Water inlet interface;

[0042] 30. Drinking water tank; 31. Water tank interface;

[0043] 401, first pipeline; 402, second pipeline; 403, third pipeline; 404, fourth pipeline; 405, fifth pipeline; 406, sixth pipeline; 407, seventh pipeline; 408, eighth pipeline; 409, ninth pipeline; 410, tenth pipeline; 411, eleventh pipeline;

[0044] 50. extraction component; 51. extraction container; 52. extraction interface; 53. coffee cup;

[0045] 61. bottom bracket; 611. bracket accommodating cavity; 62. bottom bracket cover; 621. cover accommodating cavity; 622. cover perforation; 63. first heat exchange component; 631. heat exchange body; 632. heat exchange water inlet; 633. heat exchange pipeline; 634. heat exchange water outlet; 64. first water pump; 65. first refrigeration plate; 66. bottom bracket plate;

[0046] 70. Second heat exchange device; 71. First heat exchange bracket; 72. First insulation layer; 73. Refrigeration component; 731. Refrigeration body; 732. Refrigeration water inlet; 733. Refrigeration pipeline; 734. Refrigeration water outlet; 74. Second refrigeration fin; 75. Second heat exchange component; 76. Second insulation layer; 77. Second heat exchange bracket;

[0047] 80. A third heat exchange device; 801. A second water pump; 802. A third water pump;

[0048] 90. Circuit board assembly; 91. Circuit board bracket; 92. Main PCB board; 93. Motor PCB board; 94. Button. DETAILED DESCRIPTION

[0049] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0050] like Figures 1 to 12 As shown, in order to solve the problems of low cold brewing temperature efficiency of existing cold brew coffee machines and poor taste of coffee liquid due to rapid heating up after cold brewing, the present invention proposes a high-efficiency cold brew coffee device, which first cools the liquid in the extraction water channel and dissipates heat and cools it down through a second heat exchange device, thereby achieving high-efficiency extraction; in addition, the coffee cup on the cup holder assembly is cooled to ensure that the cold brew coffee liquid stored in the coffee cup is maintained at an optimal temperature, and at the same time, heat is dissipated and cooled down through the first heat exchange device to achieve temperature balance.

[0051] The efficient cold brew coffee device comprises a machine base 10, on which an extraction assembly 50 and a cup holder assembly are arranged. The machine base 10 serves as the hardware support foundation of the entire cold brew coffee device. The extraction assembly 50 is used to cold-extract coffee powder to form coffee liquid. The cup holder assembly is placed at the lower side of the extraction assembly 50, and is used to place a coffee cup 53 and receive the coffee liquid after cold brewing. A circuit board assembly 90 for controlling the operation of the entire efficient cold brew coffee device is also arranged in the machine base 10. The circuit board assembly 90 comprises a circuit board bracket 91, a main PCB board 92, a motor PCB board 93 and a button 94. The main PCB board 92, the motor PCB board 93 and the button 94 are all assembled on the circuit board bracket 91 and installed on the machine base 10 through the circuit board bracket 91. The present invention separates the main PCB board 92 for realizing the centralized control of system functions and the motor PCB board 93 for controlling the operation of the water pump, so that the internal space of the circuit board bracket 91 can be effectively utilized, and each function can be made independent of each other to ensure the stability of the system operation.

[0052] Specifically, Figure 3 , Figures 7 to 11 As shown, in the structure for preparing cold brewed coffee liquid, the extraction component 50 is connected to the extraction waterway, the extraction waterway is connected to the drinking water tank 30, and a third water pump 802 is provided on the extraction waterway, and the third water pump 802 is used to pump the liquid in the drinking water tank 30 into the extraction component 50 via the extraction waterway. The liquid in the extraction waterway after cooling flows to the position of the extraction component 50 to prepare cold brewed coffee. In order to cool the liquid in the cold brew waterway, the extraction waterway in the present invention is connected to one or more second heat exchange devices, and the second heat exchange device is used to exchange heat and cool the liquid in the extraction waterway. The second heat exchange device is also used to dissipate the heat after the heat exchange by water cooling, so that the heat after the heat exchange and cooling with the liquid in the extraction waterway can be dissipated.

[0053] The extraction water circuit is connected to two second heat exchange devices, specifically the second heat exchange device 70 and the third heat exchange device 80. In the second heat exchange device 70 and the third heat exchange device 80, the absorption and dissipation of heat by the water cooling circuit can be increased to ensure the cooling effect. In the specific implementation process, the second heat exchange device 70 and the third heat exchange device 80 can cool the extraction water circuit located at the same position, and can also cool different positions in sequence along the extension of the extraction water circuit, according to the specific selection.

[0054] The second heat exchange device 70 and the third heat exchange device 80 have similar structures. Take the second heat exchange device 70 as an example. Fig.10 , Fig.11The second heat exchange device 70 includes a refrigeration component 73 and a second refrigeration plate 74. The extraction water path passes through the refrigeration component 73. The refrigeration component 73 is connected to the cold end of the second refrigeration plate 74, and is used to cool the liquid in the extraction water path through the second refrigeration plate 74. The hot end of the second refrigeration plate 74 is connected to the water cooling circuit. In order to ensure that the water cooling circuit fully dissipates the heat of the second refrigeration plate 74, a second heat exchange component 75 is provided on the water cooling circuit in this embodiment. The second heat exchange component 75 is connected to the hot end of the second refrigeration plate 74 and is used to absorb the heat of the second refrigeration plate 74. In the present invention, the second refrigeration plate 74 directly cools the liquid in the refrigeration component 73, so that the cooling speed is faster and more stable, and the production efficiency of the cold brew coffee liquid can be improved. The present invention further uses the second heat exchanger 75 to dissipate heat and cool the second refrigeration plate 74, which can ensure the working stability of the second refrigeration plate 74, so as to achieve better cooling efficiency.

[0055] In order to ensure that the second cooling fin 74 fully cools the liquid flowing through the cooling component 73 and the second heat exchange component 75 exchanges heat at the hot end of the second cooling fin 74, a first insulation layer 72 is provided on the outside of the cooling component 73 of this embodiment, and a second insulation layer 76 is provided on the outside of the second heat exchange component 75. The first insulation layer 72 and the second insulation layer 76 are used to ensure sufficient transfer of internal cold and heat. Preferably, the second cooling fin 74 is a semiconductor refrigerator connected to the circuit board assembly 90 (specifically the main PCB board 92) in the base 10, and the main PCB board 92 in the circuit board assembly 90 controls the working state of the semiconductor refrigerator to achieve the cooling temperature control of the cold extract.

[0056] In addition, in this embodiment, the second heat exchange device 70 also includes a first heat exchange bracket 71 and a second heat exchange bracket 77. The first heat exchange bracket 71 is located at the periphery of the refrigeration body and the first insulation layer 72, and the second heat exchange bracket 77 is located at the periphery of the second heat exchange component 75 and the second insulation layer 76. The first heat exchange bracket 71 and the second heat exchange bracket 77 are assembled and fixed to fix the entire second heat exchange device 70 inside the base 10. Through the application of the first heat exchange bracket 71 and the second heat exchange bracket 77, the second heat exchange device can be directly assembled as a complete module in this embodiment, and the second heat exchange device has a higher degree of integration.

[0057] like Fig.11As shown, in order to increase the contact area and contact time between the second refrigeration plate 74 and the cold-brewed liquid and ensure sufficient cooling of the cold-brewed liquid in the refrigeration component 73, the refrigeration component 73 in this embodiment has a channel for increasing the contact area. Specifically, the refrigeration component 73 includes a refrigeration body 731, a refrigeration pipeline 733 located inside the refrigeration body 731, and a refrigeration water inlet 732 and a refrigeration water outlet 734 are respectively provided at both ends of the refrigeration pipeline 733. The cold-brewed liquid enters the refrigeration body 731 through the refrigeration water inlet 732, and rotates under the guidance of the refrigeration pipeline 733, and flows out through the refrigeration water outlet 734. The corresponding second heat exchange component 75 also has a channel for extending the path, please refer to the following description of the cup holder assembly.

[0058] During the flow of the cold extract, the second heat exchange device 70 and the third heat exchange device 80 are sequentially "connected in series" to achieve the driving and cooling of the liquid in the cold extract circuit. The water tank interface 31 of the drinking water tank 30 is connected to the third water pump 802 through the eighth pipeline 408, the third water pump 802 is connected to the third heat exchange device 80 through the ninth pipeline 409, the third heat exchange device 80 is connected to the second heat exchange device 70 through the tenth pipeline 410, and the second heat exchange device 70 is connected to the extraction interface 52 of the extraction component 50 through the eleventh pipeline 411. The cold extract falls into the extraction container 51 in the extraction component 50 through the extraction interface 52, and falls into the coffee cup 53 located at the lower side of the extraction container 51.

[0059] Specifically, Figures 3 to 6 , Fig.12 As shown, in the structure for collecting and storing cold brewed coffee liquid, the cup seat assembly includes a first heat exchange device, which is used to exchange heat and cool the coffee cup on the cup seat assembly so that the coffee liquid in the coffee cup maintains an optimal drinking temperature to ensure the taste of the coffee liquid.

[0060] The first heat exchange device includes a first refrigeration plate 65, the cold end of the first refrigeration plate 65 is connected to the bottom support plate 66 of the cup holder assembly, and is used to cool the bottom support plate 66 through the first refrigeration plate 65. The first refrigeration plate 65 is a semiconductor refrigerator connected to the circuit board assembly 90 (specifically the main PCB board 92) in the machine base 10. The first heat exchange device also includes a water cooling circuit, and the hot end of the first refrigeration plate 65 is connected to the water cooling circuit, which is used to water-cool the heat after heat exchange through the water cooling circuit. The present invention directly cools and cools the coffee cup through the first refrigeration plate 65 and the bottom support plate 66, which can ensure that the coffee liquid in the coffee cup is at a temperature with the best taste, and the temperature distribution is more balanced; at the same time, the first refrigeration plate 65 is cooled and cooled through the water cooling circuit to ensure the working stability of the first refrigeration plate 65, so that it is in the best working state.

[0061] In order to ensure that the water cooling circuit fully dissipates the heat of the first cooling fin 65, the water cooling circuit in this embodiment is provided with a first heat exchange component 63, which is connected to the hot end of the first cooling fin 65 and is used to absorb the heat of the first cooling fin 65. In order to ensure the cooling effect of the first cooling fin 65 on the coffee cup, the cup holder assembly in this embodiment includes a bottom support sheet 66, which is in contact with the first cooling fin 65 and can diffuse the temperature of the cooling fin to increase the contact area with the coffee cup and ensure the uniformity of the temperature. Preferably, the bottom support sheet 66 is made of metal (such as aluminum, which is light in weight), which can conduct heat more effectively and at a lower cost.

[0062] In order to increase the heat exchange efficiency of the first heat exchange component 63 and the second heat exchange component 75, the first heat exchange component 63 and the second heat exchange component 75 in this embodiment are provided with channels for increasing the liquid heat exchange area. Fig.11 As shown, taking the first heat exchange component 63 as an example, the first heat exchange component 63 includes a heat exchange body 631, a heat exchange pipeline 633 is provided inside the heat exchange body 631, and a heat exchange water inlet 632 and a heat exchange water outlet 634 are respectively provided at both ends of the heat exchange pipeline 633. The liquid used for heat exchange (such as water) enters the heat exchange body 631 through the heat exchange water inlet 632, rotates under the guidance of the heat exchange pipeline 633, and flows out through the heat exchange water outlet 634.

[0063] The first heat exchange device further includes a base bracket 61 , which is used to install and fix the first heat exchange component 63 . Specifically, a concave bracket accommodating cavity 611 is provided in the middle of the base bracket 61 , and the first heat exchange component 63 is installed in the bracket accommodating cavity 611 .

[0064] The first heat exchange device further includes a bottom support cover 62, which is mounted on the bottom support bracket 61 and is used to mount the first heat exchange component 63 and the first cooling fin 65. Specifically, the bottom support cover 62 is provided with a cover accommodating cavity 621, which is used to fix and mount the bottom support fin 66; the middle of the bottom support cover 62 is also provided with a cover through hole 622 that runs through from top to bottom, and the first cooling fin 65 is mounted at the position of the cover through hole 622, so that the first cooling fin 65 can contact the bottom support fin 66 and the first heat exchange component 63 respectively.

[0065] The present invention makes the first heat exchange device more integrated through the specific structural design, which can fully reduce the volume of the base part, is more conducive to assembly, and realizes the inherent functions of the first heat exchange device.

[0066] like Figure 3 , Fig.12As shown, a cooling water tank 20 is provided on the base 10, and the cooling water tank 20 is used to store liquid for cooling and realize the circulation of the liquid. The cooling water tank 20 in the present invention can directly store cooling water, and the heat dissipation and temperature reduction of each refrigeration plate can be realized through the circulation of water; the cooling water tank in the present invention can also store other liquids for cooling, and the present invention is not limited to water.

[0067] The cooling water tank 20 includes a water outlet tank 21 and a water inlet tank 22. The water outlet tank 21 is connected to the cold water inlet of the water cooling circuit in the first heat exchange device and the cold water inlet of the water cooling circuit in the second heat exchange device, and the water inlet tank 22 is connected to the hot water outlet of the water cooling circuit in the first heat exchange device and the hot water outlet of the water cooling circuit in the first heat exchange device. Specifically, a water outlet interface 25 is provided at the water outlet position of the water outlet tank 21, and the water outlet interface 25 is connected to the cold water inlet of the water cooling circuit in the first heat exchange device and the cold water inlet of the water cooling circuit in the second heat exchange device; a water inlet interface 26 is provided at the water inlet position of the water inlet tank 22, and the water inlet interface 26 is connected to the hot water outlet of the water cooling circuit in the first heat exchange device and the hot water outlet of the water cooling circuit in the first heat exchange device.

[0068] The water outlet tank 21 and the water inlet tank 22 are separated by a partition 23, and the end of the water outlet tank 21 away from the water outlet position and the end of the water inlet tank 22 away from the water inlet position are connected to each other. Specifically, a notch is provided on the top of the partition 23, and the notch forms a reflux channel 24 for the water inlet tank 22 and the water outlet tank 21, and the liquid in the water inlet tank 22 flows to the water outlet tank 21 through the reflux channel 24. The present invention can increase the flow distance of the cooling liquid in the cooling water tank 20 through the structural design of the cooling water tank 20, so that the high-temperature liquid can be reused after fully dissipating the heat and absorb heat at the positions of the first heat exchange device and the second heat exchange device.

[0069] In the present invention, the first heat exchange device and the second heat exchange device can use the same water cooling circuit, that is, during one circulation of the cooling liquid, it flows through the first heat exchange device and the second heat exchange device in sequence (it can also flow through the second heat exchange device first and then through the first heat exchange device), so as to realize the cooling and storage of the coffee liquid in the coffee cup by the first heat exchange device and the refrigeration of the cold brew liquid by the second heat exchange device. For example, in the first specific embodiment, the water cooling circuit in the first heat exchange device is connected in series with the water cooling circuit in the second heat exchange device, and the two ends of the series-connected circuit are connected to the water outlet and water inlet of the cooling water tank. In this embodiment, the liquid can be driven by a water pump in the entire water cooling circuit.

[0070] In the present invention, the first heat exchange device and the second heat exchange device may also use different water cooling circuits, that is, the water cooling circuits used by the first heat exchange device and the second heat exchange device are connected in a "parallel" manner. For example, in the second specific embodiment, the water cooling circuit in the first heat exchange device is connected in parallel with the water cooling circuit in the second heat exchange device, so that the two ends of the water cooling circuit in the first heat exchange device are connected to the water outlet interface and the water inlet interface of the cooling water tank 20, and the two ends of the water cooling circuit in the second heat exchange device are connected to the water outlet interface 25 and the water inlet interface 26 of the cooling water tank 20. In this embodiment, a first water pump 64 for driving liquid circulation is provided on the water cooling circuit where the first heat exchange device is located, and the first water pump 64 is connected to the motor PCB board 93; a second water pump 801 for driving liquid circulation is provided on the water cooling circuit where the second heat exchange device (including the third heat exchange device) is located, and the second water pump 801 is connected to the motor PCB board 93.

[0071] In the second specific embodiment, taking the second heat exchange device and the third heat exchange device as an example, the various components are connected by pipelines: the water outlet interface 25 of the cooling water tank 20 is connected to the first water pump 64 through the first pipeline 401, the water outlet end of the first water pump 64 is connected to the first heat exchange component 63 in the first heat exchange device through the second pipeline 402, and the water outlet end of the first heat exchange component 63 is connected to the water inlet interface 26 of the cooling water tank 20 through the third pipeline 403; the water outlet interface 25 of the cooling water tank 20 is also connected to the second water pump 801 through the fourth pipeline 404, the water outlet end of the second water pump 801 is connected to the second heat exchange component 75 in the second heat exchange device through the fifth pipeline 405, the water outlet end of the second heat exchange component 75 is connected to the second heat exchange component 75 in the third heat exchange device through the sixth pipeline 406, and the water outlet end of the second heat exchange component 75 is connected to the water inlet interface 26 of the cooling water tank 20 through the seventh pipeline 407.

[0072] In this embodiment, the coolant returns to the cooling water tank 20 after passing through the second heat exchange device 70 and the third heat exchange device 80 in sequence, and the drinking water enters the extraction assembly 50 after passing through the third heat exchange device 80 and the second heat exchange device 70 in sequence, so that the flow direction of the coolant in the second heat exchange device 70 and the third heat exchange device 80 is opposite to the flow direction of the drinking water in the second heat exchange device 70 and the third heat exchange device 80, so that the drinking water can be fully cooled during the refrigeration process and the second cooling fins 74 in the second heat exchange device 70 and the third heat exchange device 80 can be fully cooled. In other embodiments, the flow direction of the coolant in the second heat exchange device 70 and the third heat exchange device 80 can also be the same as the flow direction of the drinking water in the second heat exchange device 70 and the third heat exchange device 80.

[0073] The present invention utilizes the water cooling circuit where the first heat exchange device is located and the water cooling circuit where the second heat exchange device (including the second heat exchange device 70 and the third heat exchange device 80) is located to perform water cooling, so that the heat of the first refrigeration plate and the second refrigeration plate can be effectively dissipated. On the one hand, the two refrigeration plates can be used to more efficiently cool the cold brew coffee during preparation and storage to ensure the taste of the coffee. On the other hand, the water cooling circuit can be used to achieve rapid heat dissipation without causing noise to the entire coffee machine, thereby improving the user experience.

[0074] In addition, the present invention makes the cooling and temperature-reducing structure in the entire coffee cup more integrated through the structural design of the first heat exchange device and the second heat exchange device, which is not only beneficial to the production and assembly of the coffee cup, but also can fully reduce the volume occupied by the heat exchange device in the coffee machine, thereby realizing a miniaturized design.

[0075] Based on the above-mentioned high-efficiency cold brew coffee device, the present invention also provides a cold brew cooling method for the high-efficiency cold brew coffee device, and the extraction cooling method includes two processes: cooling during the extraction process and cooling during the coffee liquid collection and storage process: during the extraction process, the second heat exchange device cools the liquid in the extraction water path to reach the extraction temperature; during the coffee liquid collection and storage process, the first heat exchange device cools the coffee cup on the cup holder assembly to reach the storage temperature.

[0076] During the extraction process, the extraction temperature is determined, and the second refrigeration plate is controlled according to the extraction temperature to cool the liquid flowing through the refrigeration component, so that the liquid in the extraction water path reaches the required temperature; in this process, the temperature sensor is used to detect the liquid temperature in the extraction water path in real time, and the closed-loop control of the second refrigeration plate temperature is achieved through the closed-loop circuit in the main PCB board.

[0077] The motor PCB drives the liquid in the water cooling circuit of the second heat exchange component to circulate through the second water pump, so as to exchange heat with the second cooling plate through the second heat exchange component. This heat exchange process can be carried out simultaneously with the extraction cooling process, or can be carried out successively, which can be set according to the needs.

[0078] During the process of collecting and storing the coffee liquid, the coffee liquid collection and storage temperature is determined, and based on the temperature, the first cooling plate is controlled to cool the bottom support plate in the cup holder assembly, so that the coffee liquid in the coffee cup on the bottom support plate is stabilized at the required temperature; in this process, the temperature of the coffee liquid in the coffee cup is detected in real time by a temperature sensor, or the temperature of the bottom support plate is detected by a temperature sensor to represent the temperature of the coffee liquid. After obtaining the temperature, the closed-loop control of the temperature of the first cooling plate is implemented through the control system of the main PCB board.

[0079] The motor PCB drives the liquid in the water cooling circuit of the first heat exchange component to circulate through the first water pump, so as to exchange heat with the first cooling plate through the first heat exchange component. This heat exchange process can be carried out simultaneously with the coffee liquid storage and cooling process, or can be carried out successively, which can be set according to the needs.

[0080] Preferably, in the above two water cooling cycles, each water pump adopts an adjustable speed water pump, and by detecting the hot end temperature of the first refrigeration plate and the second refrigeration plate, the flow rate of each water pump is adjusted to adapt to different heat dissipation and cooling requirements.

[0081] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

[0082] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An efficient cold brew coffee device, comprising a base, characterized in that: The base is provided with: An extraction assembly connected to an extraction water channel, wherein the extraction water channel is connected to one or more second heat exchange devices, wherein the second heat exchange devices are used to exchange heat and cool the liquid in the extraction water channel, and the heat after the heat exchange is dissipated by water cooling; The cup holder assembly comprises a first heat exchange device, wherein the first heat exchange device is used to exchange heat and cool down the coffee cup on the cup holder assembly, and the heat after the heat exchange is dissipated by water cooling.

2. The efficient cold brew coffee device according to claim 1, characterized in that: The second heat exchange device includes a refrigeration component and a second refrigeration fin. The extraction water path passes through the refrigeration component. The refrigeration component is connected to the cold end of the second refrigeration fin and is used to cool the liquid in the extraction water path through the second refrigeration fin. The hot end of the second refrigeration fin is connected to the water cooling circuit.

3. The efficient cold brew coffee device according to claim 2, characterized in that: The water cooling circuit is provided with a second heat exchange component, which is connected to the hot end of the second refrigeration fin and is used to absorb the heat of the second refrigeration fin.

4. The efficient cold brew coffee device according to claim 1, characterized in that: The first heat exchange device includes a first refrigeration fin, a cold end of the first refrigeration fin is connected to the bottom support plate of the cup holder assembly, and is used to cool the bottom support plate through the first refrigeration fin, and a hot end of the first refrigeration fin is connected to a water cooling circuit.

5. The efficient cold brew coffee device according to claim 4, characterized in that: The water cooling circuit is provided with a first heat exchange component, which is connected to the hot end of the first refrigeration fin and is used to absorb the heat of the first refrigeration fin.

6. The efficient cold brew coffee device according to claim 1, characterized in that: A cooling water tank is provided on the machine base: The water cooling circuit in the first heat exchange device is connected in series with the water cooling circuit in the second heat exchange device, and both ends of the circuit are connected to the water outlet interface and the water inlet interface of the cooling water tank; Or, the water cooling circuit in the first heat exchange device is connected in parallel with the water cooling circuit in the second heat exchange device, so that both ends of the water cooling circuit in the first heat exchange device are connected to the water outlet interface and water inlet interface of the cooling water tank, and both ends of the water cooling circuit in the second heat exchange device are connected to the water outlet interface and water inlet interface of the cooling water tank.

7. The efficient cold brew coffee device according to claim 6, characterized in that: The cooling water tank includes a water outlet tank and a water inlet tank. The water outlet tank is connected to the cold water inlet of the water cooling circuit in the first heat exchange device and the cold water inlet of the water cooling circuit in the second heat exchange device. The water inlet tank is connected to the hot water outlet of the water cooling circuit in the first heat exchange device and the hot water outlet of the water cooling circuit in the second heat exchange device.

8. A cold brew cooling method for a high-efficiency cold brew coffee device, characterized in that: Based on the efficient cold brew coffee device according to any one of claims 1 to 7, the extraction and cooling method comprises: During the extraction process, the second heat exchange device cools the liquid in the extraction water path to the extraction temperature; during the coffee liquid collection and storage process, the first heat exchange device cools the coffee cup on the cup holder assembly to the storage temperature.

9. The cold brew cooling method of the high-efficiency cold brew coffee device according to claim 8, characterized in that: During the extraction process, the extraction temperature is determined, and the second refrigeration plate is controlled according to the extraction temperature to cool the liquid flowing through the refrigeration component so that the liquid in the extraction water path reaches the required temperature; at the same time, the liquid in the water cooling circuit flowing through the second heat exchange component is driven to circulate so as to exchange heat with the second refrigeration plate through the second heat exchange component.

10. The cold brew cooling method of the high-efficiency cold brew coffee device according to claim 8, characterized in that: During the process of collecting and storing the coffee liquid, the coffee liquid collection and storage temperature is determined, and based on the temperature, the first refrigeration plate is controlled to cool the bottom support plate in the cup holder assembly, so that the coffee liquid in the coffee cup on the bottom support plate is stabilized at the required temperature; at the same time, the liquid in the water cooling circuit flowing through the first heat exchange component is driven to circulate, so as to exchange heat with the first refrigeration plate through the first heat exchange component.

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