Coffee machine waterway with serial instant heating module and coffee machine

Abstract

The utility model relates to the technical field of coffee machines, in particular to a tandem type double-boiler coffee machine water path and a coffee machine. The tandem type double-boiler coffee machine water path comprises a water pump, a hot water boiler, an instant heating module movably communicated with the hot water boiler, a steam pipe, a first electromagnetic valve and a steam valve. An air inlet of the steam valve communicates with the instant heating module, and an air outlet of the steam valve communicates with the steam pipe. Cold water is heated to 92-96 DEG C through the hot water boiler, then the first electromagnetic valve is opened to enable the instant heating module to conduct secondary heating on hot water to 120 + / -1 DEG C, and then high-temperature steam with relatively low humidity is generated; and meanwhile, the high-temperature steam is in a ready-to-use and ready-to-produce mode and does not need to be pre-stored in a hot water boiler, so that energy consumption is

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, and more specifically, it relates to a water circuit and coffee machine for a series dual-boiler coffee machine. Background Technology

[0002] Traditional coffee machines use a dual-boiler system. For example, Chinese patent CN115005681A discloses a dual-boiler, dual-water-supply structure, which includes a constant-temperature boiler that provides hot water for brewing coffee and a heating boiler that provides high-temperature steam for frothing milk. The heating boiler uses a steam pre-storage mode, which has the disadvantage of high energy consumption (because it needs to continuously maintain high-temperature steam). In addition, the heating boiler directly injects cold water for heating, resulting in excessively high humidity in the generated steam, which is not conducive to frothing milk (frothing milk refers to using high-temperature steam to make milk into fine foam, so as to add a rich taste and unique flavor to coffee, which is often used to make coffee drinks such as cappuccino and latte). Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a series-connected dual-boiler coffee machine water circuit to solve the technical problems of high energy consumption and high steam humidity in existing dual-boiler coffee machines.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A series-connected instant hot water module coffee machine water circuit includes a water pump, a hot water boiler connected to the water pump for heating cold water, an instant hot water module connected to the hot water boiler for converting hot water into high-temperature steam, a steam pipe connected to the instant hot water module for delivering high-temperature steam to milk to achieve milk frothing, a first solenoid valve for controlling the connection between the hot water boiler and the instant hot water module, and a steam valve for controlling the connection between the instant hot water module and the steam pipe; the steam valve's inlet is connected to the instant hot water module, and its outlet is connected to the steam pipe.

[0006] Preferably, it also includes a brewing pipeline connected to a hot water boiler and used to supply hot water to the brewer, wherein a second solenoid valve and a pressure gauge for displaying the internal pressure of the hot water boiler are provided on the brewing pipeline.

[0007] Preferably, the second solenoid valve is a three-way solenoid valve.

[0008] Preferably, it also includes a water outlet pipe connected to a hot water boiler and used to provide hot water, wherein the water outlet pipe is provided with a water outlet nozzle and a third solenoid valve for controlling whether water is discharged from the water outlet pipe.

[0009] Preferably, the water pump and the hot water boiler are connected by an inlet pipe, and a dynamic pressure regulating valve for adjusting the internal pressure of the hot water boiler is installed on the inlet pipe.

[0010] Preferably, it also includes a water storage tank; the inlet of the water pump is connected to the water storage tank, and its outlet is connected to the inlet of the hot water boiler; the pressure relief port of the dynamic pressure regulating valve is connected to the water storage tank.

[0011] Preferably, it also includes an interlock switch for adjusting the opening range of the steam valve.

[0012] Preferably, a coffee machine includes the aforementioned series-connected dual-boiler coffee machine water circuit.

[0013] In summary, this utility model has the following beneficial effects: cold water is heated to 92-96℃ by a hot water boiler, and then the first solenoid valve is opened to allow the instant heating module to reheat the hot water to 120±1℃, thereby generating high-temperature steam with relatively low humidity; at the same time, the high-temperature steam is produced on demand and does not need to be stored in the hot water boiler, thus saving energy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the water circuit of a series-connected instant hot modular coffee machine. Detailed Implementation

[0015] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0016] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0017] In this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The terms "vertical," "horizontal," "left," "right," "above," "below," and similar expressions are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] This utility model provides a series-connected instant hot modular coffee machine water circuit, such as Figure 1 As shown, the system includes a water pump 1, a hot water boiler 2 connected to the water pump 1 for heating cold water, an instant heating module 3 connected to the hot water boiler 2 for converting hot water into high-temperature steam, a steam pipe 4 connected to the instant heating module 3 for supplying high-temperature steam to milk to achieve milk frothing, a first solenoid valve 5 for controlling the connection between the hot water boiler 2 and the instant heating module 3, and a steam valve 6 for controlling the connection between the instant heating module 3 and the steam pipe 4; the inlet of the steam valve 6 is connected to the instant heating module 3, and its outlet is connected to the steam pipe 4.

[0020] Specifically, the water pump 1, hot water boiler 2, instant heating module 3, and first solenoid valve 5 are all installed inside the coffee machine casing, while the steam pipe 4 is installed on the right side of the front of the coffee machine casing. Cold water is pumped into the hot water boiler 2 by the water pump 1 and heated to 92-96℃ under the action of the PID controller. When frothing milk, rotating the steam valve 6 triggers a microswitch, causing the instant heating module 3 to rise from standby temperature to operating temperature. Simultaneously, the water pump 1 is activated and the first solenoid valve 5 is opened, allowing hot water from the hot water boiler 2 to enter the instant heating module 3 for secondary heating, raising the temperature to 120±1℃. The resulting high-temperature steam is output from the steam pipe 4 for frothing milk. The hot water boiler 2 has a capacity of 500ml and a heating power of 1400W. The instant heating module 3 is an electric heating module with a heating power of 1300W, which can quickly generate high-temperature steam to meet the need for on-demand frothing. Therefore, it does not need to be pre-stored in the hot water boiler 2, thus saving energy. In addition, hot water enters the instant heating module 3, which, compared with the scheme in CN115005681A where cold water enters the steam generator (i.e., the heating boiler), can reduce the steam humidity from 15-20% to 5%, thus making it easier to froth milk.

[0021] Furthermore, it also includes a brewing pipeline connected to the hot water boiler 2 and used to supply hot water to the brewer 15, and the brewing pipeline is equipped with a second solenoid valve 7 and a pressure gauge 8 for displaying the internal pressure of the hot water boiler 2.

[0022] like Figure 1 As shown, a brewing pipe 17 is also installed on the hot water boiler 2 for brewing coffee. Opening the second solenoid valve 7 will deliver hot water at 92-96℃ to the brewer 15 installed on the front of the coffee machine housing to brew the coffee powder.

[0023] Furthermore, considering that relatively low-temperature high-temperature steam inevitably exists inside the hot water boiler 2, to prevent this relatively low-temperature high-temperature steam from entering the brewer 15 before the hot water and scattering the coffee grounds, the second solenoid valve 7 is preferably a three-way solenoid valve. Its inlet is connected to the hot water boiler 2, its first outlet supplies hot water to the brewer 15, and its second outlet is connected via a water pipe to a water tray 14 installed on the front of the coffee machine housing and located below the brewer 15. When brewing coffee, the inlet is first connected to the second outlet for 1-2 seconds to discharge high-pressure high-temperature steam, and then the inlet switches to connect to the first outlet to discharge hot water.

[0024] Furthermore, it also includes a water outlet pipe connected to the hot water boiler 2 and used to provide hot water, and the water outlet pipe is equipped with a water outlet 9 and a third solenoid valve 10 for controlling whether water is discharged from the water outlet pipe.

[0025] like Figure 1As shown, in order to provide users with drinking hot water, a water outlet pipe 18 is also installed on the hot water boiler 2. A third solenoid valve 10 is installed in the middle of the water outlet pipe, and a water outlet 9 is installed at its outlet end. The water outlet 9 is installed on the left side of the front of the coffee machine housing; the brewer 15 is located between the water outlet 9 and the steam pipe 4. Opening the third solenoid valve 10 will deliver hot water at 92-96℃ to the water outlet 9.

[0026] Furthermore, the water pump 1 is connected to the hot water boiler 2 via an inlet pipe, and a dynamic pressure regulating valve 11 for adjusting the internal pressure of the hot water boiler 2 is installed on the inlet pipe.

[0027] like Figure 1 As shown, a dynamic pressure regulating valve 11 is installed in the middle of the water inlet pipe 19. The pressure threshold of the dynamic pressure regulating valve 11 can be adjusted within the range of 8-12 bar, which makes it convenient for users to adjust the extraction pressure according to the characteristics of coffee beans.

[0028] Furthermore, it also includes a water storage tank 12; the inlet of the water pump 1 is connected to the water storage tank 12, and its outlet is connected to the inlet of the hot water boiler 2; the pressure relief port of the dynamic pressure regulating valve 11 is connected to the water storage tank 12.

[0029] like Figure 1 As shown, when the internal pressure of the hot water boiler 2 is greater than the preset pressure threshold of the dynamic pressure regulating valve 11, the high-temperature steam carrying hot water inside the hot water boiler 2 is discharged from the pressure relief port of the dynamic pressure regulating valve 11 and introduced into the water storage tank 12 through the connecting pipe. The water storage tank 12 is installed inside the coffee machine housing.

[0030] Furthermore, it also includes an interlock switch 13 for adjusting the opening range of the steam valve 6.

[0031] like Figure 1 As shown, in order to improve the safety of using the coffee machine, a steam valve 6 with a high surface temperature is installed inside the coffee machine housing, and an interlock switch 13 is installed on the front of the coffee machine housing. The interlock switch 13 drives the valve core of the steam valve 6 to rotate, which is used to adjust the opening range of the steam valve 6, so that the user can adjust the output pressure of the high temperature steam according to the needs of frothing milk.

[0032] This utility model also provides a coffee machine, which includes the aforementioned series-connected dual-boiler coffee machine water circuit and coffee machine housing. The aforementioned components in the series-connected dual-boiler coffee machine water circuit are installed inside or on the outer surface of the coffee machine housing according to actual needs.

[0033] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A series-connected instant hot modular coffee machine water circuit, characterized in that, It includes a water pump, a hot water boiler connected to the water pump for heating cold water, an instant heating module connected to the hot water boiler for converting hot water into high-temperature steam, a steam pipe connected to the instant heating module for conveying high-temperature steam to milk to achieve milk frothing, a first solenoid valve for controlling the connection between the hot water boiler and the instant heating module, and a steam valve for controlling the connection between the instant heating module and the steam pipe; the steam valve's inlet is connected to the instant heating module, and its outlet is connected to the steam pipe.

2. The water circuit of the series-connected instant hot modular coffee machine according to claim 1, characterized in that, It also includes a brewing pipeline connected to a hot water boiler and used to supply hot water to the brewer, and the brewing pipeline is equipped with a second solenoid valve and a pressure gauge for displaying the internal pressure of the hot water boiler.

3. The water circuit of the series-connected instant hot modular coffee machine according to claim 2, characterized in that, The second solenoid valve is a three-way solenoid valve.

4. The water circuit of the series-connected instant hot modular coffee machine according to claim 1, characterized in that, It also includes a water outlet pipe connected to a hot water boiler and used to provide hot water, with a water outlet nozzle and a third solenoid valve for controlling whether water is flowing from the water outlet pipe.

5. The water circuit of the series-connected instant hot modular coffee machine according to claim 1, characterized in that, The water pump is connected to the hot water boiler via an inlet pipe, which is equipped with a dynamic pressure regulating valve for adjusting the internal pressure of the hot water boiler.

6. The water circuit of the series-connected instant hot modular coffee machine according to claim 5, characterized in that, It also includes a water storage tank; the water pump inlet is connected to the water storage tank, and its outlet is connected to the water inlet of the hot water boiler; the pressure relief port of the dynamic pressure regulating valve is connected to the water storage tank.

7. The water circuit of the series-connected instant hot modular coffee machine according to claim 1, characterized in that, It also includes an interlock switch for adjusting the opening range of the steam valve.

8. A coffee machine, characterized in that, Includes the water circuit of a series-connected instant hot modular coffee machine as described in any one of claims 1-7.

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