A portable coffee maker

Abstract

The utility model discloses a kind of portable coffee machines, including shell, shell interior is equipped with water tank, water pump, pressure regulating assembly and brewing assembly, water tank is used to store water, water pump is used to deliver water to brewing assembly, pressure regulating assembly is used to adjust brewing pressure, shell interior is equipped with heating assembly, heating assembly is used to heat the water in water tank to preset temperature, relative to traditional need to heat and store hot water in advance hot water preheating mode, water tank bottom is provided with heating film, cold water can be heated to set temperature quickly, greatly improve the convenience of use, brewing assembly is equipped with heating sheet for heating brewing head to preset temperature, can ensure that water tank hot water does not lose temperature when passing through brewing head, to ensure the flavor of extracted coffee, shell interior is equipped with energy storage module, and shell is equipped with charging interface, charging interface is connected with energy storage module by main control circuit board, for external electronic equipment power supply, further improve the portability and practicality of product.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, specifically a portable coffee machine. Background Technology

[0002] With the increasing popularity of outdoor sports and business travel, consumers' demand for portable coffee machines is growing. However, traditional portable coffee machines only focus on coffee making, and their energy systems are only used to drive basic operations such as pumping water or grinding, without achieving efficient energy reuse. At the same time, modern users often face the pain point of insufficient power for electronic devices when they are out and about. Existing coffee machines lack the ability to provide external power, which cannot meet users' needs for using multiple devices together. This forces users to carry both a power bank and a coffee machine, increasing the burden of travel.

[0003] Furthermore, most portable coffee machines on the market today do not have built-in heating devices. Users need to rely on external heat sources (such as kettles or thermos flasks) to prepare hot water in advance and then manually brew the coffee. This process not only increases the number of steps and time costs, but is also limited by the temperature stability of the external hot water (such as the temperature of water in a thermos flask dropping over time), making it difficult to guarantee the taste of the coffee. In addition, in outdoor scenarios without a stable power supply, users need to carry additional heating equipment, further reducing the portability and practicality of the product. The brewing head in portable coffee machines on the market does not have a preheating function. When the hot water enters and comes into contact with the brewing head, the brewing head absorbs a lot of heat, causing the water temperature to drop sharply, affecting the extraction effect. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a portable coffee machine that can effectively solve the technical problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a portable coffee machine, including a shell, inside which a water tank, a water pump, a pressure regulating component, and a brewing component are assembled. The water tank is used to store water, and the water inlet of the water pump is connected to the water tank for delivering water to the brewing component. The pressure regulating component is used to adjust the brewing pressure. The brewing component includes a brewing head, a water distribution net, a powder container, and a container holder. Inside the shell, a heating component is assembled, which is thermally connected to the water tank for heating the water in the tank to a preset temperature. The brewing component also includes a preheating component thermally connected to the brewing head for heating the brewing head to a preset temperature. Inside the shell, an energy storage module is assembled, and the shell is provided with at least one charging interface for powering external electronic devices.

[0006] Furthermore, the housing is equipped with a mounting bracket, which is fitted with a main control circuit board. The charging interface is integrated on the main control circuit board, which is electrically connected to the heating component, water pump, and energy storage module.

[0007] Furthermore, the heating assembly includes a heating film fixedly disposed at the bottom of the water tank, and the mounting bracket is provided with a partition for separating the main control circuit board and the heating film, as well as a support for supporting the water tank.

[0008] Furthermore, the housing is equipped with a four-way valve and a pressure gauge. The four-way valve has an inlet, a first outlet, a second outlet, and a third outlet. The inlet of the four-way valve is connected to the water tank, the first outlet of the four-way valve is connected to the brewing assembly, the second outlet of the four-way valve is connected to the pressure gauge, and the third outlet of the four-way valve is connected to the pressure regulating assembly.

[0009] Furthermore, the pressure regulating assembly includes a pressure regulating valve, a fixing component, a valve seat, an elastic reset element, a valve core, and a knob. The pressure regulating valve is provided with a pressure relief pipe, which is hollow inside to form a water outlet channel. The water tank is provided with a return pipe, which is connected to the pressure relief pipe.

[0010] The fixing component is hollow inside to form a water inlet channel. The fixing component is assembled at one end inside the pressure regulating valve. The valve seat is slidably disposed inside the pressure regulating valve. One end of the valve core is connected to the knob, and the other end is movably disposed at the other end inside the pressure regulating valve. An elastic reset element is assembled between the valve seat and the valve core.

[0011] Furthermore, the first outlet of the four-way valve is fixedly connected to the brewing head, and the preheating assembly includes a heating element sleeved on the brewing head.

[0012] Furthermore, the mounting bracket is provided with mounting parts for mounting the pressure gauge and the pressure regulating component, the mounting parts have slots, and a mounting plate is provided between two adjacent mounting parts, with the pressure gauge and the pressure regulating component mounted on the corresponding mounting plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Compared to the traditional method of preheating and storing hot water, the heating film at the bottom of the water tank can quickly heat cold water to the set temperature, greatly improving the ease of use.

[0015] 2. An energy storage module is installed inside the outer shell, and the outer shell is provided with at least one charging interface. The charging interface is connected to the energy storage module through the main control circuit board and is used to power external electronic devices, which further improves the portability and practicality of the product.

[0016] 3. The heating element is used to heat the brew head to the preset temperature. The preheated brew head has enough heat energy to ensure that the hot water in the water tank does not lose temperature when passing through the brew head, thus ensuring the flavor of the extracted coffee. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a portable coffee machine;

[0018] Figure 2 This is a cross-sectional view of a portable coffee machine;

[0019] Figure 3 An exploded view of the structure of a portable coffee machine;

[0020] Figure 4 An exploded view of the overall structure of a portable coffee machine;

[0021] Figure 5 This is a cross-sectional view of the voltage regulating component;

[0022] Figure 6 This is a schematic diagram of the assembly structure of the water tank and heating components.

[0023] Numbering on the map:

[0024] 1. Outer shell; 2. Top cover; 3. Water cup; 4. Knob; 5. Pressure gauge; 6. Control button; 7. Water tank; 8. Fixing component; 9. Battery pack; 10. Voltage regulating component; 11. Control circuit board; 12. Heating component; 13. Water inlet; 14. Second water outlet; 15. Third water outlet; 16. First water outlet; 17. Brewing head; 18. Locking bolt; 19. Water outlet channel; 20. Valve seat; 21. 21. Elastic reset element; 22. Valve core; 23. Pressure regulating valve; 24. Partition plate; 25. Heating film; 26. Main control circuit board; 27. Charging interface; 29. ​​Mounting bracket; 30. Support component; 32. Mounting plate; 33. Mounting component; 34. Four-way valve; 35. Powder bowl; 36. Water distribution network; 37. Bowl support; 38. Water inlet channel; 39. Return pipe; 40. Water pump; 41. Heating element; 42. Insulation pad. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-6As shown, this utility model provides a portable coffee machine, including a shell 1, a top cover 2 detachably connected to the top of the shell 1, a water cup 3 detachably connected to the bottom of the shell 1, a water tank 7, a water pump 40, a pressure regulating component 10 and a brewing component are installed inside the shell 1, the water cup 3 is connected to the shell 1 and encloses the brewing component inside it, the water tank 7 is used to store water, the water inlet 13 of the water pump 40 is connected to the water tank 7 and is used to deliver water to the brewing component, and the pressure regulating component 10 is used to adjust the brewing pressure;

[0027] The water tank 7 is equipped with a return pipe 39. The pressure regulating assembly 10 includes a pressure regulating valve 23, a fixing member 8, a valve seat 20, an elastic reset element 21, a valve core 22, and a knob 4. The pressure regulating valve 23 is equipped with a pressure relief pipe, which is hollow inside to form a water outlet channel 19. The brewing assembly includes a brew head 17, a water distribution net 36, a coffee bowl 35, and a bowl holder 37. The brew head 17 delivers hot water at a suitable pressure and flow rate to the lower part for coffee extraction. The water distribution net 36 is located below the brew head 17 and its function is to evenly disperse the hot water into the coffee bowl 35, ensuring that the coffee powder can be fully and evenly extracted. The coffee bowl 35 is a container for holding coffee powder. During the coffee brewing process, the coffee powder is placed in the coffee bowl 35 and receives hot water from the brew head 17 for extraction. The main function of the bowl holder 37 is to support the coffee bowl 35, keeping it in a stable position during the brewing process and preventing it from being damaged by heat. Water impact or machine vibration can cause the portafilter 35 to shift, affecting the coffee extraction quality. It should be noted that the specific working principle and structure of the brew head 17, water distribution net 36, portafilter 35, and portafilter holder 37 are not the core protected objects of this technical solution. They are only used as conventional technical support for enabling the coffee machine to have a brewing function. Compared with traditional technology, the brewing component in this embodiment is also equipped with a preheating component that is thermally connected to the brew head 17. The preheating component includes a heating element 41 sleeved on the brew head 17, which is used to heat the brew head 17 to a preset temperature. The preheated brew head 17 has sufficient heat energy to ensure that the hot water in the water tank 7 does not lose temperature when passing through the brew head 17, thereby ensuring the flavor of the extracted coffee. Preferably, the heating element 41 is sleeved with a heat-insulating pad 42, which wraps the heating element 41 and can greatly improve the heat preservation effect of the brew head 17.

[0028] The outer casing 1 is equipped with a four-way valve 34 and a pressure gauge 5. The four-way valve 34 has an inlet 13, a first outlet 16, a second outlet 14, and a third outlet 15. The inlet 13 of the four-way valve 34 is connected to the water tank 7 through a pipe to obtain water. The first outlet 16 of the four-way valve 34 is fixedly connected to the brewing head 17 to supply water for coffee making. The second outlet 14 of the four-way valve 34 is connected to the pressure gauge 5 through a pipe to monitor the water pressure in real time. The third outlet 15 of the four-way valve 34 is connected to the pressure regulating component 10 through a pipe, so that the water flows through the inlet channel 38 to open the valve seat 20 and finally leaves the regulating valve 23 through the outlet channel 19 for pressure regulation. The return pipe 39 is connected to the pressure relief pipe through a pipe. When the pressure regulating component 10 releases pressure, the water flows back to the water tank 7 through the inlet channel 38, the outlet channel 19, the pipe, and the return pipe 39 in sequence.

[0029] The fixing member 8 is hollow to form a water inlet channel 38. The fixing member 8 is assembled at one end inside the pressure regulating valve 23 and is fitted with a sealing ring. The valve seat 20 is slidably disposed inside the pressure regulating valve 23. One end of the valve core 22 is connected to the knob 4, and the other end is movably disposed at the other end inside the pressure regulating valve 23. The valve core 22 rotates synchronously with the knob 4, and the valve core 22 slides inside the pressure regulating valve 23 under the action of the thread. The elastic reset element 21 is assembled between the valve seat 20 and the valve core 22. In this embodiment, the elastic reset element 21 is a spring. In the initial stage, the spring is at its natural extension length and is not compressed by external force. The elastic potential energy stored inside is zero. Under the action of the spring thrust, the valve seat 20 is pressed tightly against the inlet of the water outlet pipe, completely blocking the water outlet. When the water pressure exceeds the spring's preload, the valve seat 20 is pushed away from the inlet of the outlet pipe, and water flows out from the outlet channel 19. Rotating the knob 4 causes the valve core 22 to move towards the valve seat 20 under the action of the thread, compressing the spring. The spring preload increases linearly with the increase in compression, and the reverse elastic force on the valve seat 20 increases synchronously. Therefore, a higher water pressure is required to open the valve seat 20, thereby increasing the extraction pressure. Conversely, rotating the knob 4 in the opposite direction causes the valve core 22 to move away from the valve seat 20 under the action of the thread, gradually reducing the spring preload and the reverse elastic force on the valve seat 20. The thrust of the water flow to open the valve seat 20 also gradually decreases. The design of the knob 4 enables stepless adjustment, thereby expanding the pressure adjustment range.

[0030] The pressure regulating component 10 and the pressure gauge 5 are detachably connected to the outer casing 1. Specifically, the mounting bracket 29 is provided with mounting parts 33 for mounting the pressure gauge 5 and the pressure regulating component 10 respectively. The mounting parts 33 have slots, and a mounting plate 32 is provided between two adjacent mounting parts 33. The pressure gauge 5 and the pressure regulating component 10 are mounted on the corresponding mounting plate 32 and are fixedly connected to it by locking bolts 18.

[0031] The housing 1 is equipped with a mounting bracket 29, which is equipped with a main control circuit board 26 and a control circuit board 11. The control circuit board 11 integrates at least one control button 6. The control button 6 is designed to facilitate the user in adjusting the working parameters of the coffee machine.

[0032] The outer casing 1 is equipped with a heating component 12, which is thermally connected to the water tank 7 and is used to heat the water in the water tank 7 to a preset temperature. Specifically, the heating component 12 includes a heating film 25 fixedly installed at the bottom of the water tank 7. Compared with the traditional hot water preheating method that requires preheating and storing hot water, the heating film 25 installed at the bottom of the water tank 7 can quickly heat cold water to the set temperature, which greatly improves the convenience of use. The mounting bracket 29 is provided with a partition 24 for separating the main control circuit board 26 and the heating film 25 and a support member 30 for supporting the water tank 7. On the one hand, the design of the partition 24 can effectively prevent the heat generated by the heating film 25 during operation from being excessively conducted to the main control circuit board 26, preventing damage to the electronic components on the circuit board due to high temperature. On the other hand, the support member 30 lifts the water tank 7 so that the bottom of the water tank 7 is in close contact with the heating film 25, ensuring that the heat generated by the heating film 25 can be fully and efficiently conducted to the water tank 7.

[0033] An energy storage module is installed inside the outer casing 1. The main control circuit board 26 is electrically connected to the heating component 12, the water pump 40, the energy storage module, and the heating element 41. The energy storage module consists of a battery pack 9 and is equipped with a BMS module for overcharge / overcurrent / overheat protection. The outer casing 1 has at least one charging interface 27, which is connected to the energy storage module via the main control circuit board 26 to supply power to external electronic devices. The main control circuit board 26 integrates a bidirectional DC-DC converter and an MCU module. The bidirectional DC-DC converter supports dynamic voltage adjustment and bidirectional energy flow. During charging, it converts the external power supply voltage into the charging voltage of the battery pack 9, and during discharging, it converts the voltage of the battery pack 9 into the device power supply voltage. The MCU module runs an RTOS and executes a dynamic power allocation algorithm. The output power is adjusted in real time according to the battery SOC, device type, and coffee machine operating status. When an external power source is connected, the MCU module synchronously allocates power to the battery charging circuit and the coffee machine heating module, and dynamically adjusts the heating power through PWM signals to achieve simultaneous charging and heating. When the coffee machine power is insufficient and the extraction program needs to be started, the MCU module immediately interrupts the power supply to non-critical equipment and allocates all available power to the electronic equipment required for the extraction function. It should be noted that the specific working principles and structures of the energy storage module, BMS module, bidirectional DC-DC converter, and MCU module are not the core protection objects of this technical solution. They are only used as conventional technical support to enable the coffee machine to provide power to external electronic equipment, charge and heat simultaneously, and prioritize power supply to the electronic equipment required for the extraction function.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A portable coffee machine, comprising a housing, wherein a water tank, a water pump, a pressure regulating component, and a brewing component are assembled inside the housing; the water tank stores water; the inlet of the water pump is connected to the water tank for delivering water to the brewing component; the pressure regulating component adjusts the brewing pressure; the brewing component includes a brewing head, a water distributor, a coffee grounds container, and a coffee bowl holder, characterized in that... The housing is equipped with a heating component that is thermally connected to the water tank to heat the water in the tank to a preset temperature. The brewing component also includes a preheating component that is thermally connected to the brewing head to heat the brewing head to a preset temperature. The housing is equipped with an energy storage module and has at least one charging interface for supplying power to external electronic devices.

2. A portable coffee machine according to claim 1, characterized in that, The housing is equipped with a mounting bracket, which is fitted with a main control circuit board. The charging interface is integrated on the main control circuit board, which is electrically connected to the heating component, water pump, and energy storage module.

3. A portable coffee machine according to claim 2, characterized in that, The heating assembly includes a heating film fixedly installed at the bottom of the water tank, and the mounting bracket is provided with a partition for separating the main control circuit board and the heating film, as well as a support for supporting the water tank.

4. A portable coffee machine according to claim 2, characterized in that, The outer casing is equipped with a four-way valve and a pressure gauge. The four-way valve has an inlet, a first outlet, a second outlet, and a third outlet. The inlet of the four-way valve is connected to the water tank, the first outlet of the four-way valve is connected to the brewing assembly, the second outlet of the four-way valve is connected to the pressure gauge, and the third outlet of the four-way valve is connected to the pressure regulating assembly.

5. A portable coffee machine according to claim 4, characterized in that, The pressure regulating assembly includes a pressure regulating valve, a fixing component, a valve seat, an elastic reset element, a valve core, and a knob. The pressure regulating valve is provided with a pressure relief pipe, which is hollow inside to form a water outlet channel. The water tank is provided with a return pipe, which is connected to the pressure relief pipe. The fixing component is hollow inside to form a water inlet channel. The fixing component is assembled at one end inside the pressure regulating valve. The valve seat is slidably disposed inside the pressure regulating valve. One end of the valve core is connected to the knob, and the other end is movably disposed at the other end inside the pressure regulating valve. An elastic reset element is assembled between the valve seat and the valve core.

6. A portable coffee machine according to claim 4, characterized in that, The first outlet of the four-way valve is fixedly connected to the brewing head, and the preheating assembly includes a heating element sleeved on the brewing head.

7. A portable coffee machine according to claim 4, characterized in that, The mounting bracket is provided with mounting parts for mounting pressure gauges and pressure regulating components, respectively. The mounting parts have slots, and a mounting plate is provided between two adjacent mounting parts. The pressure gauges and pressure regulating components are mounted on the corresponding mounting plates.

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