A coffee maker

Abstract

The application relates to a coffee machine which comprises a main body and an extraction head, a water tank, a control circuit board, a battery, an electric heating module and a water pump which are arranged in the main body and are electrically connected with the control circuit board, and a rotating part which can rotate relative to the main body; the rotating part can cover the top of the main body or one end thereof as a working end and extend outward from the main body to install the extraction head; the working end of the rotating part is provided with an assembly cavity for connecting the extraction head; the extraction head can be accommodated in the water tank or is detachably installed in the assembly cavity of the working end of the rotating part which is separated from the main body to correspond to the working state of the coffee machine and make coffee. A plurality of electronic interfaces are arranged on the control circuit board; the coffee machine is integrated with a power bank discharging function, wherein the control circuit board is provided with a power bank discharging function module, the battery controlled by the control circuit board is used as a power bank to charge electronic equipment through the electronic interfaces, and thus the power bank discharging function of the coffee machine is realized.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a coffee machine. Background Technology

[0002] With the improvement of living standards, coffee has become a symbol of modern lifestyle. It is made from roasted and ground coffee beans. People usually drink a cup of coffee in the morning or during their leisure time. When people enjoy a cup of rich and fragrant coffee in their leisure time, it not only greatly refreshes them but also allows them to fully experience the great relaxation and pleasure of their free time. Existing coffee machines generally dispense coffee liquid from the bottom of the water tank installed inside the main unit. This design requires space to be reserved for collecting coffee liquid, which reduces the internal space of the main unit. Using a small-capacity battery installed inside the main unit results in a limited total amount of cold water that can be heated, which is insufficient, especially when making multiple servings of espresso outdoors where there is no hot water. Alternatively, using a large-capacity battery would increase the size of the coffee machine, making it inconvenient to carry. On the other hand, this type of coffee machine often requires the user to hold the coffee machine, stand, or coffee cup while brewing coffee, making it inconvenient to operate. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a coffee machine that solves the problems of inconvenient operation, ineffective use of space, and small battery capacity of existing coffee machines.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A coffee machine includes a main body and an extraction head. The main body houses a water tank, a control circuit board, and a battery, an electric heating module, and a water pump electrically connected to the control circuit board. The water pump is used to hold water, and the electric heating module is used to heat the water. The control circuit board has several electronic interfaces and button modules. The coffee machine also includes a rotating part rotatably connected to the main body. By rotating the rotating part, it can be housed in the top of the main body or extend outwards from the top of the main body. The rotating part has an assembly cavity for connecting the extraction head. The extraction head can be housed in the water tank or installed in the assembly cavity of the rotating part. The water pump, water tank, and the extraction head installed in the assembly cavity... The extraction heads are connected by a water channel. When the coffee machine is in its stored state, the rotating part adapts to the top of the main body to form the top shell of the main body, and the extraction heads are placed in the water tank. When coffee needs to be made, the rotating part is rotated away from the top of the main body to extend outwards to provide sufficient space before the extraction heads are installed. After the main body is started, the control circuit board controls the electric heating module to heat the water in the water tank, and the water pump delivers the hot water to the extraction heads for coffee extraction. The coffee machine integrates a power bank discharge function, wherein the control circuit board is equipped with a power bank discharge function module, and the control circuit board controls the battery to act as a power bank to charge electronic devices through the electronic interface.

[0006] In some embodiments, the battery is a high-capacity, high-rate discharge power battery; the battery capacity is 20000mAh or more. When the coffee machine is in the storage state, the assembly cavity of the rotating part is located at the top of the water tank; the shape of the rotating part is adapted to the shape of the main body, rotating until it covers the top of the main body to form a consistent shape from top to bottom; the bottom end face of the rotating part is adapted to the shape of the top end face of the main body.

[0007] In some embodiments, the control circuit board inside the main body is a first control circuit board, and a second control circuit board is provided inside the rotating part. The second control circuit board is connected to the first control circuit board to realize the coffee-making function of the coffee machine. A position switch is provided on the second control circuit board. When the rotating part rotates to a predetermined angle, the coffee machine switches between the power bank discharge function and the coffee-making function by touching the position switch. When the coffee machine switches to the coffee-making function, the power bank discharge function is disabled or restricted.

[0008] In some embodiments, the control circuit board is provided with several indicator lights; the indicator lights are used to indicate the remaining battery power or to indicate the time; the second control circuit board is provided with a temperature adjustment function module and / or a time adjustment function module, the rotating part is provided with an adjustment button, and the adjustment button is electrically connected to the second control circuit board to set the water temperature and / or duration during the coffee making process.

[0009] In some embodiments, a switch guide post is provided inside the rotating part, and the switch guide post rotates together with the rotating part. A boss is provided on the top surface of the main body. When the rotating part rotates by a predetermined angle, the bottom end of the switch guide post moves to the boss, and the boss presses the switch guide post upward to touch the positioning switch to switch between the power bank discharge function and the coffee making function and start the coffee making function; as the rotating part rotates, the bottom end of the switch guide post leaves the boss and releases the positioning switch, stopping the coffee making.

[0010] In some embodiments, a spring is provided on the outer sleeve of the switch guide post, one end of the spring abuts against the flange on the switch guide post, and the other end can abut against the second control circuit board; a hollow column is provided on the bottom wall of the rotating part, and the switch guide post and the spring provided on the outer sleeve are installed in the hollow column and can move up and down along the hollow column; as the rotating part rotates, the bottom end of the switch guide post leaves the boss and moves downward under the elastic force of the spring to release the switch into position.

[0011] In some embodiments, the rotating part is rotatably connected to the main body via a rotating shaft; the rotating shaft is a hollow rotating shaft, and the main body has a shaft hole and the water tank arranged side by side on the top of the main body. The hollow rotating shaft is inserted into the shaft hole for rotational engagement; the bottom end of the hollow rotating shaft is fixedly connected to a limiting baffle, and the limiting baffle engages with the hollow shaft hole to prevent the rotating part from moving along the axial direction.

[0012] In some embodiments, a ball bearing is provided between the bottom end face of the rotating part and the top end face of the main body to form a rolling fit; a plurality of hemispherical cavities distributed on the same circumference are provided on the outer periphery of the shaft hole on the top end face of the main body or on the outer periphery of the rotating shaft on the bottom end face of the rotating part, and the ball bearing rolls into the hemispherical cavity to achieve rotational limiting.

[0013] In some embodiments, the limiting baffle includes a circular upper baffle and a circular lower baffle that are fixedly connected to each other. The circular upper baffle is inserted into the hollow rotating shaft for tight fitting. The circular lower baffle includes an annular sidewall with an outer diameter larger than that of the circular upper baffle and forms an annular groove with the circular upper baffle. It also includes an annular flange with an outer diameter larger than that of the shaft hole. The annular flange abuts against the outside of the shaft hole to limit the rotation shaft. The lower edge of the hollow rotating shaft abuts against the annular groove.

[0014] The shaft hole faces downwards to form an annular sleeve within the main body. The annular flange of the circular lower baffle is larger than the end diameter of the annular sleeve. The annular flange abuts against the outside of the end opening of the annular sleeve to limit the rotation of the hollow shaft. The limiting baffle has a through hole at its center, through which a water pipe passes and enters the hollow shaft. The water pipe connects the water pump to the extraction head installed in the assembly cavity.

[0015] In some embodiments, the assembly cavity of the rotating part is provided with a through hole, and the water pump is connected to the through hole by a water pipe; the inlet end of the water pipe is connected to the water pump, and the outlet end of the water pipe is installed in the through hole of the assembly cavity by an outlet connector for injecting water into the extraction head installed in the assembly cavity; the rotating part is a cavity; the water pipe is connected to the water pump, extends inside the main body, passes through the hollow rotating shaft, and extends to the through hole of the assembly cavity in the cavity of the rotating part.

[0016] In some embodiments, the water outlet connector is connected to a hollow needle, and the two are interconnected by water channels; the hollow needle is used to inject water into the extraction chamber and to pierce the coffee capsule. The side of the needle tip of the hollow needle has a water injection hole, and water in the water pipe is injected into the hollow needle from the water outlet connector, and then flows into the extraction chamber in the extraction head through the water injection hole on the side of the needle tip.

[0017] In some embodiments, the electric heating module includes an electric heating plate assembly configured as the bottom wall of the water tank.

[0018] In some embodiments, the electric heating module further includes a temperature sensor for detecting water temperature. The temperature sensor is connected to the control circuit board, and the control circuit board controls the heating power of the electric heating module based on the water temperature detected by the temperature sensor.

[0019] In some embodiments, the heating module employs a high-power heating module to heat the water in the water tank to a temperature of 86-95°C within a few minutes.

[0020] In some embodiments, a heat dissipation system is provided inside the main unit; the heat dissipation system includes a cooling fan installed inside the main unit, an air inlet and an air outlet provided in the casing of the main unit, and an air duct formed inside the main unit; when the cooling fan is started, ambient air is drawn in through the air inlet and flows along the air duct inside the main unit to absorb heat, and the hot air is discharged from the air outlet; the battery, control circuit board, and water pump are installed inside the lower part of the main unit; the heat dissipation area of ​​the air duct covers the battery and control circuit board inside the lower part of the main unit for effective heat dissipation.

[0021] In some embodiments, the air duct is U-shaped; the bottom wall of the main body is provided with the air inlet and air outlet, and a vertical partition is provided in the middle of the bottom wall to divide the space in the lower part of the main body into an air inlet side and an air outlet side, forming the U-shaped air duct. The cooling fan is installed above the air inlet, and the battery and water pump are installed on the air outlet side; a bracket is provided inside the main body, which installs the battery, water pump, control circuit board and water tank in the main body; the bracket includes a top plate, and the top of the top plate is provided with an annular mounting groove, which is adapted to the water tank, and the bottom of the water tank is fitted into the annular mounting groove so that the water tank is installed above the top of the bracket; the water pump is located below the water tank.

[0022] The beneficial effects of this utility model are:

[0023] This coffee machine features a retractable or detachable rotating part, along with optimized design of the extraction head and water tank structure and dimensions. In the retracted state, the extraction head is placed inside the water tank; in operation, the rotating part extends outwards from the main body, utilizing external space to install the extraction head removed from the water tank. This optimized space utilization results in a smaller overall size. The rotating design also allows the coffee cup to be placed directly on the table during brewing, enhancing convenience. Furthermore, the larger internal space of this coffee machine allows for a higher-capacity battery, enabling faster water heating and shorter brewing times. It also integrates a power bank discharge function, providing added convenience for the user. Attached Figure Description

[0024] Figure 1-2 This is an exploded view of the coffee machine in its stored state according to an embodiment of the present invention.

[0025] Figure 3 This is a perspective view of the coffee machine in its stored state according to an embodiment of the present invention.

[0026] Figure 4 This is a perspective view of the rotating part of the coffee machine according to an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the rotating part of the coffee machine according to an embodiment of the present invention.

[0028] Figure 6 This is a perspective view of the rotating part of the coffee machine in the working state according to an embodiment of the present invention.

[0029] Figure 7 This is an exploded view of the rotating part of the coffee machine in the working state according to an embodiment of the present invention.

[0030] Figure 8 This is a left view of the coffee machine in operation according to an embodiment of the present invention.

[0031] Figure 9 yes Figure 8 A cross-sectional view along line IX-IX.

[0032] Figure 10-11 This is an exploded view of the coffee machine in operation according to an embodiment of this utility model.

[0033] Figure 12 This is a bottom view of the coffee machine in operation according to an embodiment of the present invention.

[0034] Figure 13 yes Figure 12 A cross-sectional view along line XIII-XIII.

[0035] Figure 14 yes Figure 12 A sectional view along line XIV-XIV. Detailed Implementation

[0036] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0037] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0038] Although terms such as "first," "second," etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the elements, components, regions, layers, or segments discussed below may be referred to as second elements, components, regions, layers, or segments without departing from the teachings of the exemplary embodiments.

[0039] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "rear," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0040] Please refer to Figure 1-14 As shown, this utility model relates to a coffee machine, including a rotating part 200, a main body 100, and an extraction head 300. The rotating part 200 is rotatably connected to the main body 100, and can be rotated to the top of the main body for storage, or rotated away from the main body 100 to extend outward for installing the extraction head 300 for brewing coffee.

[0041] The main body 100 contains a water tank 170, a (first) control circuit board 150, a battery 140 electrically connected to the control circuit board 150, an electric heating module 160, and a water pump 130; the water pump 130 is used to hold water, and the electric heating module 160 is used to heat the water. The rotating part 200 is provided with an assembly cavity 214 for connecting the extraction head 300; the extraction head 300 can be stored in the water tank 170 or installed in the assembly cavity 214 of the rotating part 200. The water pump 130 is connected to the water tank 170 and the extraction head 300 installed in the assembly cavity 214 by a water circuit. When the coffee machine is in the stored state, the rotating part 200 fits over the top of the main body 100 to form the top shell of the main body 100, and the extraction head 300 is placed in the water tank 170. When coffee needs to be made, rotate the rotating part 200 away from the top of the main body 100 and extend it outward to allow sufficient space before installing the extraction head 300. After the main body 100 is started, the control circuit board 1150 controls the electric heating module 160 to heat the water in the water tank 170. The water pump 130 then delivers the hot water to the extraction head 300, where coffee is extracted. The coffee machine integrates a power bank discharge function. The control circuit board 150 is equipped with a power bank discharge module, which controls the battery 140 to act as a power bank to charge electronic devices through an electronic interface.

[0042] In the following specific embodiments, the design of the rotating part 200 optimizes the internal space of the main body 100 of the coffee machine, leaving more space for the battery. The battery capacity can reach 20,000 mAh or higher, which is 2.5 to 3 times that of existing coffee machines on the market. Considering the charging needs of mobile phones and other small devices during outdoor use, this coffee machine integrates the power bank discharge function into the control circuit board. This coffee machine is a portable coffee machine with a power bank discharge function, solving consumers' charging needs. The coffee machine of this application uses a high-capacity, high-rate discharge power battery, which improves the heating power by approximately 2.5 times or more, and shortens the cold water heating time to about two minutes, greatly improving the user experience.

[0043] The first side 201 of the rotating part 200 is rotatably connected to the first side of the top of the main body, and the rotating part 200 can be rotated to cover the top of the main body (see reference). Figure 3 The coffee machine is in its retracted position, with the extraction head 300 housed in the water tank within the main body. The rotating part 200 is shaped to match the main body 100; for example, the rotating part 200 and the main body 100 are vertically fitted together to form a long, oval cylinder with a consistent top and bottom appearance. The rotating part 200 can rotate until its second side 202 extends outward from the top of the main body 100, as shown in the reference section. Figure 5-14 Its second side 202 rotates to extend outwards from the main body 100 to obtain sufficient space to install the extraction head 300 for brewing coffee. Figure 5 The process of the rotating part rotating outward from the closed position is shown. Figure 6 The diagram shows the rotating part rotating 180 degrees to the working position. Taking the coffee machine placed vertically (in the direction of gravity) relative to the ground as an example, i.e., with the central axis of the coffee machine vertical (in the direction of gravity), the rotating part 200 rotates horizontally relative to the top surface of the main body 100. It is understood that the vertical or horizontal spatial direction and the spatial orientation of the components described below are relative orientations, not absolute spatial orientations. It is understood that the first side of the rotating part and the main body can refer to the center position or a position off-center, and the second side of the rotating part is also called the working end.

[0044] The main body 100 includes a housing 110 and a water pump 130, a battery 140, a first control circuit board 150, an electric heating module 160, and a water tank 170 installed within the housing 110. The water tank 170 is used to inject water. The water pump 130 is connected to the water tank 170 and the extraction head 300 installed on the rotating part, thereby pumping water from the water tank 170 to the extraction head 300 to dissolve and extract coffee powder placed in the extraction head 300. The electric heating module 160 is used to heat the water in the water tank 170. In the following embodiments, the electric heating module 160 includes an electric heating plate 161 and is installed at the bottom of the water tank 170. In other embodiments, the electric heating module 160 may also be a heating wire or other electric heating structure, installed at a suitable location such as the bottom, sides, or interior of the water tank 170, or installed at any suitable location in the water supply pipeline between the water tank 170 and the extraction head 300, or installed on the extraction head 300. The water pump 130, battery 140, and electric heating module 160 are electrically connected to and controlled by the first control circuit board 150. The first control circuit board 150 can also be installed inside the rotating part 200, or a second control circuit board 220 can be provided inside the rotating part and connected to the first control circuit board 150.

[0045] The housing 110 is cylindrical (not limited to a straight cylinder), including a top surface 111, a cylindrical side wall 114, and a bottom cover 116 that seals the end opening of the cylindrical side wall 114; the housing 110 is hollow inside. The top surface 111 is flat and has openings, namely a shaft hole 112 and a water tank mounting hole 117, arranged side by side. As a non-limiting example, the water tank mounting hole 117 extends into the housing 110 to form an annular wall 1170, which is adapted to and installed in the water tank 170. The shaft hole 112 extends into the housing 110 to form an annular sleeve 1120, which is used to install the rotating shaft of the rotating part 220. The space inside the housing 110 below the annular wall 1170 and the annular sleeve 1120 is used to install the water pump 130, battery 140, electric heating module 160, and first control circuit board 150, etc.

[0046] The top of the main body 100 has a water tank 170 and a shaft hole 112 arranged side by side. The top opening of the water tank 170 is used for water injection. The water tank 170 is adapted to accommodate the extraction head 300. After the extraction head 300 is detached from the rotating part 200, it can be placed in the water tank 170. A cover 301 can also be provided to cover the top opening of the water tank 170. When the rotating part 200 rotates back to the top of the main body 100 to cover the top of the water tank 170, it leaves the top of the water tank 170 when rotating out of the main body, exposing the water tank 170. After removing the cover 301, the extraction head 300 can be taken out from the water tank. The coffee machine of this application optimizes the structure and size design of the extraction head 300 and the water tank 170, placing the coffee extraction head 300 inside the water tank 170. This allows the extraction head 300 to be placed inside even when stored, making storage and carrying more convenient. When in operation, the extraction head 300 can be removed from the water tank 170, and coffee powder or coffee capsules can be inserted and connected to the rotating part to extract coffee.

[0047] A ring of recesses 113 is provided around the shaft hole 112 on the top surface of the main body (housing 110). The recesses 113 are preferably hemispherical and evenly distributed around the same circumference, located on the outer periphery of the circular shaft hole 112. A raised annular flange 1121 may be provided along the edge of the shaft hole 112, i.e., the opening. The annular flange 1121 and the annular groove 217 around the bottom end face of the rotating part 200 shaft 211 (see reference) Figure 4Rotational engagement. A rotating shaft 211 is provided at the bottom of the rotating part 200. The rotating part 220 is connected to the main body 100, and its rotating shaft 211 is inserted into the shaft hole 112 on the top surface of the main body, allowing for relative rotatable engagement. The rotating shaft 211 is fitted into the shaft hole 112 and the annular sleeve 1120, with relative rotatable engagement between the wall surfaces. A ball bearing 213 is provided between the bottom end face 212 of the rotating part 200 and a cavity 113 located on the outer periphery of the rotating shaft 211 and the outer periphery of the shaft hole 112 on the top surface 111 of the main body. The ball bearing 213 rolls into the cavity 113, facilitating the rotation of the rotating part 220 and providing rotational limitation. It can be understood that the cavity 113 can also be provided on the bottom end face of the rotating part 200 on the outer periphery of the rotating shaft 211. A limiting baffle 180 is provided inside the housing 110 to limit the axial displacement of the rotating shaft 211, and can be fixedly connected to the end of the rotating shaft 211 to ensure that the rotating shaft 211 rotates within the shaft hole 112 without disengaging from the shaft hole 112 at the top of the housing 110. A through hole 183 is provided in the center of the limiting baffle 180 through which the water supply pipe 400 passes. As a non-limiting example, the limiting baffle 180 includes a circular upper baffle 181 and a circular lower baffle 182 fixedly connected to each other, with the circular upper baffle 181 inserted into the hollow rotating shaft 211 for a tight fit. The circular lower baffle 182 includes an annular sidewall with an outer diameter larger than that of the circular upper baffle 181, forming an annular groove 184 between the lower baffle 181 and the upper baffle 181. It also includes an annular flange 1810 with an outer diameter larger than that of the shaft hole 112 (or larger than the end diameter of the annular sleeve 1120). The annular flange 1810 abuts against the outside of the shaft hole 112 (or the end opening of the annular sleeve 1120) to limit the movement of the rotating shaft 211. The lower edge of the hollow rotating shaft 211 abuts against the annular groove 184.

[0048] A boss 115 is provided outside the shaft hole 112 on the top surface 111 of the main body 100 (housing 110). The boss 115 is preferably arc-shaped to match the shape of the shaft hole 112. The boss 115 is located outside the shaft hole 112 and between the annular flange 1121 and a concave cavity 113. The boss 115 can press upward against the switch guide post 221, causing the guide post 221 to move upward and touch the position switch 223 (see reference) on the second control circuit board 220. Figure 7 , 9 (11 and 13) to initiate function switching, such as switching between the coffee-making function and the power bank discharge function. When the coffee machine is in the storage state, the switch guide post 221 rotates with the rotating part 200 to disengage from the boss 115, for example, the switch guide post 221 moves to a position outside the shaft hole 112 opposite to the boss 115 (e.g. Figure 1Under the elastic force of the spring 223 on the switch guide post, the switch guide post 221 moves downward and will not press against the switch 223 in place, thus not activating the coffee-making function. At this time, the coffee machine can be used as a power supply device, such as a power bank, to charge external electronic devices. It can be understood that more functions can be switched and activated by configuring the bosses 115 at different positions. These multiple functions are implemented by setting corresponding functional modules on the first control circuit board 150 and / or the second control circuit board 220. A cavity 1150 can be provided on the upper surface of the boss 115 for limiting the position of the switch guide post 221.

[0049] A bracket 190 is provided inside the main body 100. The water pump 130, battery 140, and first control circuit board 150 are mounted inside the main body 100 via the bracket 190, specifically on the bottom wall. The bracket 190 includes a top plate 191, which is, for example, a horizontal plate (relative to the direction in which the main body is placed upright). An annular mounting groove 192 is provided on the upper side of the top plate 191. The mounting groove 192 is adapted to the water tank 170, and the bottom of the water tank is fitted into the annular mounting groove 192, thereby allowing the water tank 170 to be mounted above the top of the bracket 190. A through hole 193 is provided on the side wall of the mounting groove 192. The through hole 193 communicates with the through hole 172 of the bottom plate (electric heating plate 161) of the water tank and with the water inlet pipe 131 of the water pump 130, so that water in the water tank 170 can flow into the water pump 130.

[0050] In one embodiment, the electric heating module 160 is a circular heating plate assembly, serving as the bottom wall of the water tank 170, adapted to and assembled within the mounting groove 192 of the top plate 191 of the bracket. The electric heating module 160 includes a circular plate 161, a first annular member 162, and a second annular member 163. The first annular member 162 and the second annular member 163 seal the circular plate 161 to the bottom of the water tank 170, forming the bottom of the water tank, thereby enabling rapid heating of the water within the water tank 170. An annular groove 164 is formed on the top surface of the first annular member 162 for assembling the annular bottom end of the water tank 170. An annular groove is formed on the top surface of the second annular member 163 to assemble the circular plate 161 into the mounting groove 192 of the top plate 191 of the bracket 190, and can be further secured by fasteners such as screws. It can be understood that the circular plate 161 and / or the first annular member 162 and / or the second annular member 163 are electric heating elements, electrically connected to the first control circuit board 150, and heated after being energized. The bottom wall of the water tank (in this embodiment, the electric heating module 160) is provided with through holes. One through hole 172 is connected to the water pump 130 to supply water from the water tank 170 to the water pump 130. A temperature sensor 173 is installed in the other through hole to measure the water temperature or the temperature of the electric heating module 160 and transmit the detected temperature to the first control circuit board 150. The first control circuit board 150 then controls the current (or heating power) of the electric heating module 160. In some specific embodiments, the electric heating module 160 at the bottom of the water tank uses a high-power electric heating module to achieve rapid heating of cold water, increasing heating power and greatly improving the user experience. The electric heating module 160 is electrically connected to the first control circuit board 150 and is equipped with a temperature sensor 173 for monitoring and controlling the temperature. The temperature sensor 173 is connected to the first control circuit board 150. The coffee machine of this application uses a high-capacity, high-discharge-rate power battery 140 and a high-power electric heating module 160 to achieve rapid heating of cold water, which greatly improves the heating efficiency compared with existing coffee machines. For example, if three 3.7V batteries 140 with a single cell capacity of 7000MAH are connected in series, the nominal voltage is 11.1V. If the power battery has a 3C discharge rate, it can output 7000MAH x 3 = 21000MAH, which means it can output a current of 21A. The power is 11.1 x 21 = 233.1W, which can heat 60ml of water at room temperature to 92℃ (this temperature is the suitable temperature for most coffee extraction, but the water temperature can be 86-95℃) in about 1 minute.

[0051] The bottom of the bracket 190 is mounted on the bottom cover 116 of the housing 110. The space between the top plate 191 of the bracket and the bottom cover 116 is used to install the water pump 130, the battery 140, and the first control circuit board 150. The bracket 190 securely mounts the water pump 130, the battery 140, and the first control circuit board 150 within the housing 110 using clamping or fastener mechanisms. The water pump 130 is located below the water tank 170 and is connected to the water tank 170 by a pipe.

[0052] One or more batteries 140 can be installed inside the main body 100. The batteries can be primary batteries, preferably rechargeable batteries, and more preferably high-capacity rechargeable batteries. For example, the battery capacity can reach 20,000 mAh or more to quickly heat a large amount of cold water to meet the needs of brewing multiple servings of hot coffee. On the other hand, the high-capacity battery allows the coffee machine to function as a power supply device (or power bank) to supply power to external devices such as mobile terminals. In the coffee machine of this application, the rotating part 200 serves as the top of the main body 100 and rotates relative to the main body. The internal structural space of the main body is sufficient to accommodate a battery with a capacity of 20,000 mAh or more. As one embodiment, the battery 140 is a high-capacity and high-discharge-rate power battery, which greatly improves the heating efficiency. As a non-limiting example, three 3.7V 7000mAh batteries are connected in series, with a nominal voltage of 11.1V. The power battery has a 3C discharge rate, which can heat room temperature water to 92°C within minutes. To address the issue of long heating times in existing coffee machines, the coffee machine of this application uses a large-capacity, high-rate discharge power battery, which increases the heating power by approximately 2.5 times or more, and shortens the cold water heating time to about two minutes, greatly improving the user experience.

[0053] A cooling fan 120 is installed inside the main unit 100. The cooling fan 120 is electrically connected to the first control circuit board 150 and is controlled by the first control circuit board 150. The main unit housing 110 has several air inlets 124 and several air outlets 125. For example, the air inlets 124 and air outlets 125 are located on the bottom cover 116, and are each a set of through-holes distributed in a circular area to form a honeycomb pattern. The cooling fan 120 is installed above the air inlets 124. When the fan 120 is turned on, it can promote the intake of external air into the main unit through the air inlets 124. The hot air, after absorbing heat, flows along the air duct and is discharged from the main unit 100 through the air outlets 125. A partition 123 is provided on the bottom cover 116. The partition 123 extends upward from the bottom cover 116 (e.g., but not limited to perpendicular to the bottom cover) and is located below the bracket top plate 191, thereby dividing the internal space of the housing 110 (the space between the bracket top plate 191 and the bottom cover 116) into left and right parts. That is, the side with the air inlet 124 is the air inlet side, and the side with the air outlet 125 is the air outlet side. The air inlet 124 and the air outlet 125 are located on both sides of the partition 123, thereby forming a U-shaped air duct 126 inside the housing 110 (the space below the bracket top plate 191). Figure 1-2 (10, 14). The battery 140, the first control circuit board 150, the water pump 130, and the electric heating module 160 are installed inside the housing 110 (in the space below the top plate of the bracket), all within the airflow coverage of the U-shaped air duct 126, ensuring that the battery 140, the first control circuit board 150, and other components can be effectively cooled. In a non-limiting example, the battery 140, the water pump 130, and the electric heating module 160 are located above the air outlet 125 and on the air outlet side of the partition, the cooling fan 120 is located above the air inlet 124 and on the air inlet side of the partition, and the first control circuit board 150 is supported by the partition 123 and the bracket 190 and can span the left and right parts (air inlet side and air outlet side) of the space separated by the partition 123.

[0054] The air inlet 124, air outlet 125, U-shaped air duct 126, and cooling fan 120 constitute the heat dissipation system inside the coffee machine main body 100. When the cooling fan 120 is activated, it promotes the intake of external air into the housing 110 through the air inlet 124, which flows along the U-shaped air duct 126 to exchange heat within the main body 100, forming hot air. The hot air is then exhausted from the coffee machine through the air outlet 125. This heat dissipation system effectively solves the problem of excessively high internal temperature of the main body caused by the high-power heating plate. It dissipates heat during coffee machine operation, preventing overheating from affecting use and greatly improving the internal heat dissipation effect of the product. It is understood that the air inlet 124 and air outlet 125 can also be located in other positions of the housing 110, such as the cylindrical side wall 114, and the internal space of the housing can be divided into an intake side and an exhaust side by a partition 123 to form a U-shaped air duct for heat dissipation.

[0055] To address the issue of excessively high internal temperature in the coffee machine caused by the use of high-power heating in this application, a cooling fan 120 has been added. Furthermore, through structural design, a U-shaped airflow passage 126 is formed inside the main body 100 to ensure effective heat dissipation for components such as the battery 140 and the control circuit board 150.

[0056] In some specific embodiments, the first control circuit board 150 is provided with a plurality of electronic interfaces 151, indicator lights 152, and button modules 153. An opening 118 is provided on the housing 110 of the main body 100. The first control circuit board 150 is mounted behind the opening 118. The plurality of electronic interfaces 151, indicator lights 152, and button modules 153 extend from the first control circuit board 150 into the opening 118 and are exposed on the surface of the main body 100 for operation or display. The electronic interfaces 151, indicator lights, and button modules 153 can be secured in the opening 118 by a light guide plate 155 and a retaining ring 154. For example, the opening 118 is located on the front of the main body, i.e., the front of the cylindrical sidewall 114. The plurality of electronic interfaces 151 include charging interfaces and discharging interfaces or have charging and discharging functions, and may also include communication interfaces. The charging interface can be used to charge the battery 140. The discharging interface is also an output interface, using the battery 140 to charge other electronic devices. The communication interface can be used for data or signal transmission. Several indicator lights 152 can be used to indicate the battery level of the 140 and also to indicate the operating status of the coffee machine. For example, the multiple indicator lights 140 indicate the remaining battery power by the number of lights illuminated, and can also be used to set the coffee brewing time. These functions are controlled and configured via the first control circuit board 150.

[0057] In this embodiment of the invention, a large-capacity battery 140 is used, and a charging module is configured on the first control circuit board 150. The charging module is used to charge electronic devices such as mobile terminals through an electronic interface 151 that is electrically connected to the first control circuit board 150, eliminating the need to carry an extra power bank.

[0058] In some embodiments, the first control circuit board 150 mainly implements the power bank function and provides power to the second control circuit board 220. The second control circuit board 220 mainly implements the coffee extraction function.

[0059] The water pump 130 is equipped with an inlet pipe 131 and an outlet pipe 132. The inlet pipe 131 is connected to the water tank 170, and the outlet pipe 132 is connected to one end of the water pipe 400. The other end of the water pipe 400 is connected to the outlet pipe 132 of the water pump 130 inside the main body 100, passes through the internal cavity of the main body, passes through the hollow rotating shaft 221 in the shaft hole 122, and extends into the cavity of the rotating part. The outlet connector of the water pipe 400 is installed in the through hole 219 of the assembly cavity 214 on the second side 202 of the rotating part, and is connected to the water inlet of the extraction head 300 installed in the assembly cavity 214. The connectors at both ends of the water pipe 400 can rotate 360 ​​degrees. The inlet end of the water pipe 400 is connected to the outlet pipe 132 of the water pump 130 through the inlet connector, and the outlet end is installed in the through hole 219 of the device cavity 214 of the rotating part through the outlet connector 410 to inject water into the extraction head 300.

[0060] In the embodiment shown in the figure, the rotating part 200 serves as the top shell rotation design of the elongated oval main body 100 of the coffee machine, optimizing the internal space of the main body 100 and providing more space for the battery. The rotating part 200 includes a housing 210 and a second control circuit board 220. The outer dimensions of the housing 210 are adapted to the housing 110 of the main body, and the second control circuit board 220 is installed in a cavity inside. A top cover 230 covers the top of the cavity to seal the second control circuit board 220 inside the housing 210.

[0061] Combination Figure 4The lower surface of the bottom wall of the housing 210, i.e. the bottom end face 21, is adapted to the top end face 111 of the main body. The bottom end face of the second side 202 of the rotating part 200 is provided with a hollow rotating shaft 211 extending downward. The interior of the hollow rotating shaft 211 is connected to the cavity inside the housing 210 so that the water pipe 400 can pass through the hollow rotating shaft 211 and extend to the cavity of the housing 210 to the assembly cavity 214 of the second side 202 and communicate with the water passage of the extraction head 300. An annular groove 217 and an arcuate groove 215 are provided on the bottom end face 21 of the rotating part 200, located on the outer periphery of the hollow rotating shaft 211. When the hollow rotating shaft 211 of the rotating part 200 is inserted into the shaft hole 112 at the top of the main body 100 for rotational engagement, the flange 1121 of the shaft hole 112 on the top end face 111 of the main body rotates along the annular groove 217, and the boss 115 on the outer periphery of the shaft hole 112 on the top end face 111 of the main body rotates along the arcuate groove 215. A ball bearing 213 is provided between the bottom end face 21 of the rotating part 200 and the top end face 111 of the main body to form a rolling engagement and limit the movement. In a non-limiting example, the arcuate groove 215 is a semicircle, that is, the rotating part 200 can rotate 180 degrees. The arc-shaped groove 215 and the annular groove 217 are separated by an arc-shaped flange 216. The two ends of the arc-shaped groove 215 correspond to the start and end points, respectively, which correspond to the storage position and working position of the rotating part 200. The start and end points can be provided with a start point recess 2151 and an end point recess 2150 to facilitate the positioning of the boss 115 in the storage and working positions. As a non-limiting example, the bottom of the end point recess 2150 is provided with a ball bearing 213, for example, two balls bearings are provided at intervals, which facilitates the upward pressing of the switch guide post 221 with the protrusion 151. Corresponding to the cavity 113 on the top surface 111 of the main body 100, the bottom surface 21 of the rotating part 200 is provided with a ball bearing 213, which rolls with the cavity 113 and forms a rotation limit. To limit the ball bearing 113, a plurality of hollow pillars 212 are provided on the bottom wall of the rotating part 200. The bottom end of each pillar penetrates the bottom wall so that the opening at the bottom end can accommodate and limit the ball bearing 213. The top end extends upward into the cavity inside the rotating part housing 210, which can be used to support the second control circuit board 220. One hollow pillar is used to accommodate and guide the switch guide post 221 and the spring 222 sleeved on its outside. One end of the spring 222 abuts against the flange 2210 on the switch guide post, and the other end can abut against the second control circuit board 220.

[0062] The bottom wall of the rotating housing 210 has a through hole 218 on the first side 201, which communicates with the hollow rotating shaft 211, the cavity inside the housing 210, and the through hole on the second control circuit board 220, through which the water supply pipe 400 passes. The bottom wall of the housing 210 has an assembly cavity 214 on the second side 202. The assembly cavity 214 is cylindrical and is used for detachably connecting the extraction head 300. For example, the annular inner sidewall of the assembly cavity 214 has an internal thread, and the extraction head 300 has an external thread. The threads engage and tighten or loosen when the extraction head 300 is rotated. The extraction head 300 is rotatably installed in the assembly cavity 214 or screwed out of the assembly cavity 214. Of course, it can also be a detachable method such as clamping or tightening. The top wall of the assembly cavity 214 is located within the cavity of the pot body 210 and is provided with a through hole 219. The through hole 219 is used to install the water outlet connector 410 of the water pipe 400. The through hole in the water outlet connector 410 is connected to the water pipe and the water passage of the extraction head 300. If coffee powder is placed directly in the extraction head 300, hot water can be directly input into the extraction chamber of the extraction head 300 through the water outlet connector 410 to make coffee. If a coffee capsule is placed in the extraction head 300, a hollow needle 40 is further connected to the water outlet connector 410, and the tip of the hollow needle 40 pierces into the capsule. The tip of the hollow needle 40 is provided with a side water inlet 41, which is opened on the side of the needle tip. Water in the water pipe 400 flows into the hollow needle 40 from the connector 410, and then water is injected into the capsule through the side water inlet 41 of the needle tip to dissolve the coffee powder in the extraction capsule. For example, the needle tip has multiple side water inlets 141. The side water inlet 141 allows for greater pressure and stronger impact when hot water flows out, ensuring that the hot water comes into full contact with the coffee grounds and facilitates the dissolution and extraction of the coffee grounds.

[0063] For example, the second control circuit board 220 mainly functions to make coffee. It can be set with a temperature adjustment module and a time adjustment module to adjust the water temperature and the time during the coffee making process. An adjustment button (not shown) electrically connected to the second control circuit board 220 can be set on the top cover 230 to set the water temperature and / or duration during the coffee making process.

[0064] A position switch 223 is provided on the second control circuit board 230, specifically on its lower surface (facing the main body 100). A movable switch post 221 moves upward to press the position switch 223, activating the coffee-making function. The switch post 221 moves downward to release the position switch 223, stopping the coffee-making function. At this time, the function can be switched to power bank discharge mode, where the first control circuit board 150 inside the main body 100 controls the high-capacity battery 140 to act as a power bank, charging electronic devices through the electronic interface 151. A hollow post 212 is provided on the bottom wall of the housing for mounting the switch post 221 on the rotating housing 221, rotating synchronously with the rotating part 200. A spring 222 is fitted over the switch post 221 and inserted into the hollow post 212. The rotation of the rotating part 200 simultaneously drives the switch guide post 221 to rotate around the rotating shaft 211 and the outer periphery of the shaft hole 112. That is, the bottom end of the switch guide post 221 moves along the arc of the boss 115 on the outer periphery of the shaft hole 112 on the top surface 111 of the main body. The rotation of the rotating part 200 drives the switch guide post 221 mounted on the rotating part to rotate simultaneously. When it rotates to a designated position (for example, the rotating part 200 rotates 180 degrees), the switch guide post 221 moves onto the boss 115 on the top surface 111 of the main body. The boss 115 will lift the switch guide post 221 and press it into position. The switch 223 realizes the switching between the coffee making function and the power bank discharge function. It can also start the coffee making function (the electric heating module 160 is powered on to heat the water in the water tank 170 to the preset water temperature, and the water pump delivers hot water to the extraction head 300 to dissolve and extract coffee powder). At the same time, the spring 222 is compressed when the switch guide post 221 moves upward. When the rotating part 200 is rotated back, the bottom end of the switch guide post 221 moves away from the boss 115. Under the elastic force of the spring 222, the switch guide post 221 moves downward to release the switch 223 into position. When rotated to the storage position (rotated 180 degrees), the boss 115 is located at the starting point of the arc groove 215. When the rotating part 200 is rotated to the working position, the boss 115 is located at the end point of the arc groove 215. For example, the arc groove 215 is a semicircle.

[0065] The extraction head 300 can adopt the structure of existing technology, with an internal extraction chamber for holding coffee powder or coffee capsules. The extraction head 300 has a water inlet at the top and a flow outlet at the bottom. The water outlet connector 410 of the water pipe is connected to the water inlet for injecting water into the extraction chamber. The water injected into the extraction chamber dissolves and extracts the coffee powder, and the resulting coffee liquid flows out from the flow outlet at the bottom. The water outlet connector 410 can also be connected to the aforementioned hollow needle 41 for inserting the coffee capsule.

[0066] During operation, the rotating part 200 is rotated from the top of the main body 100 to expose the water tank 170, i.e., the second side 202 is rotated out of the top of the main body. The extraction head 300 inside the water tank 170 is taken out and connected to the assembly cavity 214 of the rotating part. Room temperature water is injected into the water tank 170. The rotating part is rotated to the working position. At this time, the switch guide post 221 inside the rotating part 200 presses against the position switch 223 on the second control circuit board 220 inside the rotating part 200 to start the coffee making function. The first control circuit board 150 controls the electric heating module 160 to be energized to heat the water in the water tank 170 to the predetermined temperature. The first control circuit board 150 activates the water pump 130 to pump hot water into the extraction head 300 to dissolve the coffee powder inside the extraction head. The coffee can be steeped for a predetermined time and then the coffee liquid is released. After the coffee is made, the extraction head is removed, placed back into the water tank 170, and rotated back into the rotating part 200 and stored above the water tank on the top of the main body 100. When in the storage state, the switch post 221 is released to the position of switch 223, and the coffee machine switches to the state where it can supply power to the outside (i.e., the power bank discharge function), which can be used to charge electronic devices.

[0067] In the above embodiment, a second control circuit board 220 is provided inside the rotating part 200, and the first control circuit board 150 is connected to the second control circuit board 220. One bottom end of the rotating part 200 is provided with an assembly cavity 214 for assembling the extraction head 300. The assembly cavity 214 is provided with a water outlet connector 410 (the water outlet connector 410 can also be connected to a hollow needle 40). The water tank 170 is connected to the water inlet pipe 131 of the water pump 130 via a water pipe 400. The water outlet pipe 132 of the water pump 130 is connected to the water path of the extraction head installed in the assembly cavity 214 via the water pipe 400 and its water outlet connector 410. The bottom of the extraction head 300 is provided with a flow hole communicating with the extraction cavity. The extraction head 300 is detachably connected to the assembly cavity 214. The extraction head 300 can be disassembled and placed in the water tank 170. The rotating part 200 rotates 180 degrees horizontally relative to the main body 100, facilitating the installation of the extraction head 300 in the assembly cavity 214 of the rotating part during use. The hollow needle 40 punctures the coffee capsule placed in the extraction chamber 31 of the extraction head 300. Hot water is pumped from the water tank 170 into the hollow needle 40 via the water pump 130, and then injected into the extraction chamber or coffee capsule inside the extraction head through the side water inlet 41 of the hollow needle 40 to dissolve and extract the coffee powder. The hollow needle 40 can puncture various coffee capsules, allowing users to choose the maximum variety and flavor of coffee. It also supports self-filling of coffee powder in the extraction chamber. When not in use, the extraction head 300 can be removed and placed in the water tank 170 for easy storage, and the rotating part 200 can be rotated 180 degrees horizontally relative to the main body 100 to return to its initial storage state.

[0068] In this embodiment of the present invention, the top of the main body 100 is provided with a water tank mounting hole 117 and a shaft hole 112. The water tank 170 is disposed in the water tank mounting hole 117. The bottom end of the rotating part 200 is provided with a hollow rotating shaft 211. An upper limit baffle 181 is assembled inside the hollow rotating shaft 211. The hollow rotating shaft 211 extends into the shaft hole 112. The bottom end is fixed by the lower limit baffle 182 and abuts against the outside of the shaft hole 112. The upper limit baffle 181 is locked with the lower limit baffle and fixedly connected to the bottom end of the hollow rotating shaft 211, so that the rotating part 200 can rotate stably relative to the main body 100 without detaching from the main body.

[0069] The top opening of the water tank 170 can be covered with a cover 301; the bottom of the water tank 170 is provided with two through holes, one of which, 172, is connected to the water inlet pipe of the water pump 130 for water in the water tank to flow into the water pump 130, and the temperature sensor 173 is set in the other through hole for monitoring and controlling the temperature of the water in the water tank 170.

[0070] In some specific embodiments, the outer periphery of the shaft hole 112 is provided with a plurality of hemispherical cavities 113 arranged in a circle at equal intervals and a boss 115 located on another coaxial arc. The circle of hemispherical cavities 113 is concentric with the arc where the boss is located, and the center of the circle is the shaft hole 112. The surface of the boss 115 is provided with hemispherical cavities 1150; the bottom end face 21 of the rotating part 200 is provided with a semi-circular groove (arc groove) 215 on the outer periphery of the hollow rotating shaft 211. A raised hemisphere (or ball) 213 is embedded in the bottom wall of the semi-circular groove (arc groove) 215 at one end (or a predetermined position) of the groove, which effectively prevents the rotating part from being misaligned when rotating.

[0071] In some specific embodiments, a switch guide post 221 is provided inside the rotating part 200, and a spring 222 is sleeved on the switch guide post 221; a position switch 223 is provided on the second control circuit board 220. When one end of the switch guide post 221 is located on the boss 115, the switch guide post 221 is pushed up and presses against the position switch 223, switching to the coffee making function mode, and the power bank discharge function mode is disabled at this time; when one end of the switch guide post 221 moves away from the position switch 223, the power bank discharge function mode is switched back to the power bank discharge function mode. The position switch 223 of the second control circuit board 220 realizes the switching between the power bank discharge function mode and the coffee making function mode, avoiding voltage instability caused by using two functions at the same time. For example, when making coffee, the electric heating module 160 needs a large amount of power to heat cold water. If the battery 140 is also used to discharge the power bank to charge the electronic device, the voltage output from the battery 140 to the electric heating module 160 will decrease, and the electronic device will not be able to be charged because the battery voltage is pulled down.

[0072] When using the coffee machine of the utility model embodiment, firstly, the rotating part 200 can be rotated horizontally by 180 degrees relative to the main body 100. Then, the coffee capsule (which can act as an extraction chamber) is placed into the extraction head 300 or the coffee powder is placed into the extraction chamber of the extraction head. The extraction head is installed in the assembly cavity 124 of the rotating part by means of threads. When a coffee capsule is placed, the hollow needle 40 punctures the coffee capsule. The power button is turned on to start the electric heating module 160 in the coffee machine to heat the cold water in the water tank 170. After the temperature sensor detects that the water in the water tank 170 has been heated to the preset water temperature, the water pump 130 pressurizes the hot water in the water tank 170 and injects it into the extraction chamber through the water outlet connector 410 of the water pipe 400 (or the side water injection hole 41 of the hollow needle 41 connected to the water outlet connector 410) to extract coffee. The extracted coffee liquid flows out from the flow hole connected to the extraction chamber to complete the coffee making. When not in use, the extraction head 300 can be removed and placed in the water tank 170, and the rotating part 200 can be rotated 180 degrees horizontally relative to the main body 100 to return to its initial storage state. Therefore, when brewing coffee, users can simply touch the power button on the button module 153 to start brewing coffee. Users can also selectively use the time / temperature adjustment buttons on the top cover 230 of the rotating part 200 to set their preferred coffee taste. The coffee brewing process is simple and quick. When the user's mobile device runs out of power, it can be charged by plugging a data cable into the output interface (electronic interface) 151 on the main body, at which point the coffee machine can be used as a power bank.

[0073] In the above embodiments, the coffee machine is designed as an elongated oval shape, with a rotatable top shell that can be rotated away from the main body to utilize external space for installing the extraction head to make coffee. This does not occupy the internal space of the main body 100, thus optimizing the internal space of the coffee machine and providing more space for the battery 140. The battery capacity can be 20,000 mAh or higher, which is 2.5 to 3 times that of existing models on the market. Considering the charging needs of mobile phones and other small electronic devices during outdoor use, the coffee machine's power bank function is used to charge these devices. The coffee machine of this application is portable and solves consumers' charging needs.

[0074] To address the issue of long heating times in existing products, the coffee machine of this application uses a large-capacity, high-rate discharge power battery, which increases the heating power of the 160V electric heating module by more than 2.5 times, shortening the cold water heating time to about two minutes and greatly improving the user experience.

[0075] To address the issue of excessively high internal temperatures caused by high-power heating, the coffee machine of this application incorporates a cooling fan 120 and, through structural design, forms a U-shaped airflow path 126 within the internal space of the coffee machine. The heat dissipation area essentially covers the electronic components, ensuring that components such as the battery 140 and circuit board 150 can be effectively cooled.

[0076] The coffee machine of this application switches between the coffee making function and the power bank discharge function through the position switch 223. When the rotating part 200 on the top is rotated to the predetermined position, the power bank discharge function and the coffee making function are switched by touching the position switch. When switching to the coffee making function, the power bank discharge function is disabled or restricted.

[0077] This application optimizes the structure and size design of the extraction head 200 and the water tank 170, placing the coffee extraction head 300 inside the water tank 170. In this stored state, the extraction head can be placed inside, making it more convenient to use.

[0078] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coffee machine, comprising a main body and an extraction head, wherein the main body is provided with a water tank, a control circuit board, and a battery, an electric heating module, and a water pump electrically connected to the control circuit board; the water pump is used to hold water, and the electric heating module is used to heat the water, characterized in that: The control circuit board is provided with several electronic interfaces and button modules; the coffee machine also includes a rotating part rotatably connected to the main body; by rotating the rotating part, the rotating part can be housed in the top of the main body or extend outward away from the top of the main body; the rotating part is provided with an assembly cavity for connecting the extraction head; the extraction head can be housed in the water tank or installed in the assembly cavity of the rotating part; the water pump is connected to the water tank and the extraction head installed in the assembly cavity. When the coffee machine is in the storage state, the rotating part adapts to the top of the main body to form the top shell of the main body, and the extraction head is placed in the water tank; When coffee needs to be made, rotate the rotating part away from the top of the main body and extend it outward to allow enough space before installing the extraction head. After the main body is started, the control circuit board controls the electric heating module to heat the water in the water tank, and the water pump delivers the hot water to the extraction head for coffee extraction. The coffee machine integrates a power bank discharge function. The control circuit board is equipped with a power bank discharge function module, which controls the battery to act as a power bank to charge the electronic device through the electronic interface.

2. The coffee machine as described in claim 1, characterized in that: The battery is a high-capacity, high-rate discharge power battery; the battery capacity is 20,000 mAh or more. When the coffee machine is in the storage state, the assembly cavity of the rotating part is located at the top of the water tank; The shape of the rotating part is adapted to the shape of the main body, and it rotates until it covers the top of the main body to form a consistent shape from top to bottom; The bottom surface of the rotating part is adapted to the shape of the top surface of the main body.

3. The coffee machine as described in claim 1, characterized in that: The control circuit board inside the main body is a first control circuit board, and a second control circuit board is provided inside the rotating part. The second control circuit board is connected to the first control circuit board to realize the coffee making function of the coffee machine. A position switch is provided on the second control circuit board. When the rotating part rotates to a predetermined angle, the coffee machine switches between the power bank discharge function and the coffee making function by touching the position switch. When the coffee machine switches to the coffee-making function, disable or limit the power bank's discharge function.

4. The coffee machine as described in claim 3, characterized in that: The control circuit board is also equipped with several indicator lights; these indicator lights are used to indicate the remaining battery power or to indicate the time. The second control circuit board is provided with a temperature adjustment function module and / or a time adjustment function module, and the rotating part is provided with an adjustment button. The adjustment button is electrically connected to the second control circuit board to set the water temperature and / or duration during the coffee making process.

5. The coffee machine as described in claim 3, characterized in that: A switch guide post is provided inside the rotating part. The switch guide post rotates together with the rotating part. A boss is provided on the top surface of the main body. When the rotating part rotates to a predetermined angle, the bottom end of the switch guide post moves to the boss. The boss presses the switch guide post upward and touches the positioning switch to switch between the power bank discharging function and the coffee making function and start the coffee making function. As the rotating part rotates, the bottom end of the switch guide post leaves the boss and releases the positioning switch, stopping the coffee making. The switch guide post is fitted with a spring, one end of which abuts against the flange on the switch guide post, and the other end can abut against the second control circuit board; the bottom wall of the rotating part is provided with a hollow column, and the switch guide post and the spring fitted inside it are installed in the hollow column and can move up and down along the hollow column; as the rotating part rotates, the bottom end of the switch guide post leaves the boss and moves downward under the elastic force of the spring to release the switch into position.

6. The coffee machine as described in claim 1, characterized in that: The rotating part is rotatably connected to the main body via a rotating shaft; the rotating shaft is a hollow rotating shaft, and the main body has a shaft hole and the water tank arranged side by side on the top of the main body. The hollow rotating shaft is inserted into the shaft hole for rotational engagement; the bottom end of the hollow rotating shaft is fixedly connected to a limiting baffle, and the limiting baffle engages with the hollow shaft hole to prevent the rotating part from moving along the axial direction. A ball bearing is provided between the bottom end face of the rotating part and the top end face of the main body to form a rolling fit; a plurality of hemispherical cavities distributed on the same circumference are provided on the outer periphery of the shaft hole on the top end face of the main body or on the outer periphery of the rotating shaft on the bottom end face of the rotating part, and the ball bearing rolls into the hemispherical cavity to achieve rotational limiting.

7. The coffee machine as described in claim 6, characterized in that: The limiting baffle includes a circular upper baffle and a circular lower baffle that are fixedly connected to each other. The circular upper baffle is inserted into the hollow rotating shaft for tight fitting. The circular lower baffle includes an annular sidewall with an outer diameter larger than that of the circular upper baffle and forms an annular groove with the circular upper baffle. It also includes an annular flange with an outer diameter larger than that of the shaft hole. The annular flange abuts against the outside of the shaft hole to limit the rotation shaft. The lower edge of the hollow rotating shaft abuts against the annular groove. The shaft hole forms an annular sleeve inside the main body with the shaft hole facing downward. The annular flange of the circular lower baffle is larger than the end diameter of the annular sleeve. The annular flange abuts against the outside of the end opening of the annular sleeve to limit the rotation of the hollow shaft. The limiting baffle has a through hole in the center, and the water pipe passes through the through hole and enters the hollow rotating shaft; the water pipe is connected between the water pump and the extraction head installed in the assembly cavity.

8. The coffee machine as described in claim 1, characterized in that: The assembly cavity of the rotating part is provided with a through hole, and the water pump is connected to the through hole by a water pipe; the inlet end of the water pipe is connected to the water pump, and the outlet end of the water pipe is installed in the through hole of the assembly cavity by an outlet connector for injecting water into the extraction head installed in the assembly cavity. The rotating part is a cavity; the water pipe connects to the water pump, extends inside the main body, passes through the hollow rotating shaft, and extends to the through hole in the cavity of the rotating part to the assembly cavity. The water outlet connector is connected to a hollow needle, and the water channels are interconnected; the hollow needle is used to inject water into the extraction chamber and to pierce into the coffee capsule. The hollow needle has a water injection hole on the side of the needle tip. Water from the water pipe is injected into the hollow needle through the water outlet connector, and then flows into the extraction chamber in the extraction head through the water injection hole on the side of the needle tip.

9. The coffee machine as described in claim 1, characterized in that: The electric heating module includes an electric heating plate assembly, which is configured as the bottom wall of the water tank; The electric heating module also includes a temperature sensor for detecting water temperature. The temperature sensor is connected to the control circuit board, and the control circuit board controls the heating power of the electric heating module according to the water temperature detected by the temperature sensor. The heating module uses a high-power heating module to heat the water in the water tank to a temperature of 86-95℃ within a few minutes.

10. The coffee machine according to any one of claims 1 to 9, characterized in that: The main unit is equipped with a heat dissipation system; the heat dissipation system includes a cooling fan installed inside the main unit, an air inlet and an air outlet provided on the shell of the main unit, and an air duct formed inside the main unit; when the cooling fan is started, it draws in ambient air from the air inlet and absorbs heat by flowing along the air duct inside the main unit, and the hot air is discharged from the air outlet. The battery, control circuit board, and water pump are installed inside the lower part of the main body. The heat dissipation area of ​​the air duct covers the battery and control circuit board inside the lower part of the main unit for effective heat dissipation.

11. The coffee machine as described in claim 10, characterized in that: The air duct is U-shaped; the bottom wall of the main body is provided with the air inlet and air outlet, and a partition is vertically provided in the middle of the bottom wall to divide the space in the lower part of the main body into the air inlet side and the air outlet side, thus forming the U-shaped air duct; The cooling fan is installed above the air inlet, and the battery and water pump are installed on the air outlet side; The main body is equipped with a bracket that houses the battery, water pump, control circuit board, and water tank. The bracket includes a top plate with an annular mounting groove at its top. The annular mounting groove is adapted to the water tank, and the bottom of the water tank is fitted into the annular mounting groove, thus mounting the water tank above the top of the bracket. The water pump is located below the water tank.

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