A portable coffee maker

Abstract

The utility model provides a kind of portable coffee machine, including water tank, first heating body, second heating body, battery power supply unit, direct current power supply unit, extraction mechanism and control unit;The direct current power supply unit includes power adapter, and the power adapter is used to access mains power supply;The first heating body and second heating body are respectively arranged on the water tank, to be able to heat the water tank;The water tank is connected with the extraction mechanism, to be able to supply hot water to the extraction mechanism;The extraction mechanism is used to receive coffee powder, to extract and form coffee liquid;The control unit is used to connect the battery power supply unit and the direct current power supply unit respectively, and the control unit is used to control the battery power supply unit and supply energy for the first heating body or control the direct current power supply unit and supply energy for the second heating body, to provide hardware basis for automatically switching power supply between battery power supply unit and direct current power supply unit.

Description

Technical Field

[0001] This utility model relates to a portable coffee machine. Background Technology

[0002] In today's fast-paced life, portable coffee machines have become essential for many people's travel, work, and leisure due to their convenience, especially suitable for outdoor adventures, business trips, and daily commutes. However, existing products have significant limitations in their power supply methods, seriously affecting their widespread application. Specifically, the mainstream portable coffee machines on the market fall into two categories: one type relies solely on a built-in battery for power. While this gives the device high mobility, allowing it to be easily used in environments without power outlets, the battery capacity is usually limited, often only enough to make one or two cups of coffee before needing to be recharged. This cannot meet the needs of prolonged outdoor activities or continuous use by multiple people, causing interruptions in camping, road trips, or emergencies. The other type can only operate by connecting to mains power via an external adapter. It can operate stably and continuously in fixed locations such as homes and offices, but once in environments without mains power, such as outdoors, camping, or power outages, the device becomes completely ineffective. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a portable coffee machine that provides a hardware foundation for automatically switching power supply between a battery-powered unit and a DC-powered unit.

[0004] To solve the above-mentioned technical problems, this utility model provides a portable coffee machine, including a water tank, a first heating element, a second heating element, a battery power supply unit, a DC power supply unit, an extraction mechanism, and a control unit;

[0005] The DC power supply unit includes a power adapter, which is used to connect to the mains power supply.

[0006] The first heating element and the second heating element are respectively disposed on the water tank so as to heat the water tank;

[0007] The water tank is connected to the extraction mechanism so as to supply hot water to the extraction mechanism;

[0008] The extraction mechanism is used to receive coffee powder and extract it to form coffee liquid;

[0009] The control unit is used to connect the battery power supply unit and the DC power supply unit respectively, and the control unit is used to control the battery power supply unit to supply power to the first heating element or to control the DC power supply unit to supply power to the second heating element.

[0010] In a preferred embodiment, the system includes a housing; the water tank, first heating element, second heating element, battery-powered unit, extraction mechanism, and control unit are disposed within the housing.

[0011] The DC power supply unit includes a DC power supply interface and a power adapter. The DC power supply interface is located on the housing, and the power adapter is detachably connected to the DC power supply interface for connecting to AC power.

[0012] In a preferred embodiment, a charging unit is further included; the charging unit is connected to the battery power supply unit and the DC power supply unit, and the charging unit is used to enable the DC power supply unit to charge the battery power supply unit.

[0013] In a preferred embodiment, the control unit further includes a status detection module that detects the interface connection status of the DC power supply interface; the control unit is used to control the battery power supply unit to supply power to the first heating element or control the DC power supply unit to supply power to the second heating element based on the interface connection status of the DC power supply interface.

[0014] In a preferred embodiment, a temperature detection unit is further included; the temperature detection unit is disposed on the water tank; the temperature detection unit is connected to the control unit.

[0015] In a preferred embodiment, the first heating element and the second heating element are disposed at the bottom of the water tank; the first heating element and the second heating element are connected to the water tank through a heat-conducting medium.

[0016] In a preferred embodiment, the thermally conductive medium is thermally conductive silicone grease.

[0017] In a preferred embodiment, a water pump is also included, connected between the water tank and the extraction mechanism.

[0018] In a preferred embodiment, the extraction mechanism includes a drip tray and a coffee extraction chamber; the drip tray is connected to the outlet of the water pump, and the coffee extraction chamber is disposed below the drip tray.

[0019] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0020] The DC power supply unit includes a power adapter for connecting to AC power; the first heating element and the second heating element are respectively mounted on the water tank to heat the water tank; the water tank is connected to the extraction mechanism to supply hot water to the extraction mechanism; the extraction mechanism receives coffee powder to extract coffee liquid; the control unit is connected to the battery power supply unit and the DC power supply unit respectively, and the control unit controls the battery power supply unit to power the first heating element or controls the DC power supply unit to power the second heating element, providing a hardware basis for automatic switching of power supply between the battery power supply unit and the DC power supply unit. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the portable coffee machine in a preferred embodiment of the present invention;

[0022] Figure 2 This is a water circuit connection diagram of the portable coffee machine in a preferred embodiment of the present invention. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] See Figures 1-2 A portable coffee machine includes a housing 1, a water tank 2, a water pump 3, a first heating element 4, a second heating element 5, a battery power supply unit 6, a DC power supply unit, an extraction mechanism 8, and a control unit 9. The water tank 2, water pump 3, first heating element 4, second heating element 5, battery power supply unit 6, extraction mechanism 8, and control unit 9 are integrated within the housing 1.

[0025] The water tank 2 is located inside the upper side of the outer shell 1, with an open opening, allowing water to be added directly into it; the first heating element 4 and the second heating element 5 are both located outside the bottom of the water tank 2 and are connected to the water tank 2 through a heat-conducting medium; in this embodiment, the heat-conducting medium is thermal grease.

[0026] The extraction mechanism 8 is located on the lower side of the outer casing 1. The extraction mechanism 8 includes a drip tray 81 and a coffee extraction chamber 82. The water pump 3 is connected to the outlet of the water tank 2 and the inlet of the drip tray 81, respectively. The water pump 3 is used to transport water from the water tank 2 to the drip tray 81. The coffee extraction chamber 82 is located below the drip tray 81 and is used to receive coffee powder. After the drip tray 81 receives water, it forms a uniform water flow within the coffee extraction chamber 82. A coffee outlet is located at the bottom of the coffee extraction chamber 82, from which coffee liquid can flow out. In this embodiment, the portable coffee machine also includes a cup body 11 covering the lower end of the outer casing 1. The cup body 11 can be removed and is used to collect coffee liquid.

[0027] The battery power supply unit 6 is disposed within the housing 1. The DC power supply unit includes a power adapter 71 for connecting to a mains power source. The first heating element 4 and the second heating element 5 are respectively disposed on the water tank 2 to heat the water tank 2. The water tank 2 is connected to the extraction mechanism 8 to supply hot water to the extraction mechanism 8. The extraction mechanism 8 receives coffee powder to extract coffee liquid. The control unit 9 is connected to the battery power supply unit 6 and the DC power supply unit respectively, and the control unit 9 controls the battery power supply unit 6 to power the first heating element 4 or controls the DC power supply unit to power the second heating element 5. Using this application, a hardware basis can be provided for automatic switching of power supply between the battery power supply unit 6 and the DC power supply unit. Based on this hardware, when no mains power is connected, the battery power supply unit 6 can power the first heating element 4; after connecting to mains power, the system automatically switches to mains power to power the second heating element 5.

[0028] The DC power supply unit includes a DC power supply interface, which is disposed on the housing 1. The power adapter 71 is detachably connected to the DC power supply interface. The portable coffee machine also includes a charging unit; the charging unit connects the battery power supply unit 6 and the DC power supply unit, and is used to enable the DC power supply unit to charge the battery power supply unit 6. The control unit 9 also includes a status detection module, which detects the interface connection status of the DC power supply interface; the control unit 9 is used to control the battery power supply unit 6 to supply power to the first heating element 4 or control the DC power supply unit to supply power to the second heating element 5 based on the interface connection status of the DC power supply interface.

[0029] The portable coffee machine also includes a temperature detection unit 10; the temperature detection unit 10 is disposed on the water tank 2; the temperature detection unit 10 is connected to the control unit 9. The temperature detection unit 10 is an NTC temperature sensor, embedded in the center of the bottom of the water tank 2, which can detect the water temperature in real time and feed it back to the control unit 9.

[0030] In this embodiment, both the first heating element 4 and the second heating element 5 are thick-film heating sheets, which are closely attached to the bottom surface of the water tank 2 and have their heat transfer efficiency improved by thermally conductive silicone grease. In other embodiments, the heating elements may also be made of other materials.

[0031] In this embodiment, the control unit 9 is an MCU of model MC51F003A4. The ADC port of the control unit 9 is connected to the temperature detection unit 10, and the GPIO port of the control unit 9 controls the switching transistors of the first heating element 4 and the second heating element 5 respectively through a drive circuit. The power detection port of the control unit 9 is connected to the DC power supply interface, and its identification voltage is 5V or 20V. The control unit 9 charges the battery power supply unit 6 through a boost / buck module and shuts down the charging unit when the power adapter 71 is detected to be inserted.

[0032] During use, the user adds water to the water tank 2 and selects the hot beverage option. The control unit 9 determines whether the power adapter 71 is inserted. If inserted and the voltage is normal, the charging unit is turned off, and the second heating element 5 is activated. Heating stops when the water temperature reaches a certain level (e.g., 92 degrees Celsius), and the water pump 3 is started to complete the extraction. If the power adapter 71 is not inserted, the first heating element 4 is activated. Heating stops when the water temperature reaches a certain level (e.g., 92 degrees Celsius), and the water pump 3 is started to complete the extraction.

[0033] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A portable coffee machine, characterized in that, It includes a water tank, a first heating element, a second heating element, a battery power supply unit, a DC power supply unit, an extraction mechanism, and a control unit; The DC power supply unit includes a power adapter, which is used to connect to the mains power supply. The first heating element and the second heating element are respectively disposed on the water tank so as to heat the water tank; The water tank is connected to the extraction mechanism so as to supply hot water to the extraction mechanism; The extraction mechanism is used to receive coffee powder and extract it to form coffee liquid; The control unit is used to connect the battery power supply unit and the DC power supply unit respectively, and the control unit is used to control the battery power supply unit to supply power to the first heating element or to control the DC power supply unit to supply power to the second heating element.

2. A portable coffee machine as described in claim 1, characterized in that, It includes an outer casing; the water tank, the first heating element, the second heating element, the battery power supply unit, the extraction mechanism, and the control unit are disposed within the outer casing; The DC power supply unit includes a DC power supply interface, which is disposed on the housing. The power adapter is detachably connected to the DC power supply interface and is used to connect to the mains power supply.

3. A portable coffee machine as described in claim 2, characterized in that: It also includes a charging unit; the charging unit is connected to the battery power supply unit and the DC power supply unit, and the charging unit is used to enable the DC power supply unit to charge the battery power supply unit.

4. A portable coffee machine as described in claim 3, characterized in that: The control unit further includes a status detection module, which detects the interface connection status of the DC power supply interface; the control unit is used to control the battery power supply unit to supply power to the first heating element or control the DC power supply unit to supply power to the second heating element based on the interface connection status of the DC power supply interface.

5. A portable coffee machine as described in claim 1, characterized in that: It also includes a temperature detection unit; the temperature detection unit is installed on the water tank; the temperature detection unit is connected to the control unit.

6. A portable coffee machine as described in claim 1, characterized in that: The first heating element and the second heating element are disposed at the bottom of the water tank; the first heating element and the second heating element are connected to the water tank through a heat-conducting medium.

7. A portable coffee machine as described in claim 6, characterized in that: The thermally conductive medium is thermally conductive silicone grease.

8. A portable coffee machine as described in claim 1, characterized in that: It also includes a water pump connected between the water tank and the extraction mechanism.

9. A portable coffee machine as described in claim 8, characterized in that: The extraction mechanism includes a drip tray and a coffee extraction chamber; the drip tray is connected to the outlet of the water pump, and the coffee extraction chamber is located below the drip tray.

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