Coffee machine

Abstract

The invention relates to the technical field of coffee machines, in particular to a portable coffee machine. Comprising an upper shell, a lower shell and an extraction device detachably arranged on the upper shell, the upper shell is rotatably arranged at the top of the lower shell, and the extraction device is detachably connected to the mounting cavity; the extraction cover body is provided with an extraction cavity with a through hole, the spine end of the extraction needle penetrates through the through hole to be located in the extraction cavity, and the connecting end of the extraction needle is connected with the mounting cavity; the extraction seat body is provided with a liquid outlet through hole and a liquid outlet connecting seat communicated with the liquid outlet through hole, the liquid outlet connecting seat is provided with a liquid outlet needle and an extraction net piece, the extraction net piece is arranged at the connecting end of the liquid outlet needle in a sleeving mode, and a gap is formed between the extraction net piece and the connecting end of the liquid outlet needle to form a liquid outlet channel; therefore, the coffee machine is simple in overall structure, small in size and convenient for a user to store and carry when going out, the requirement of the user for drinking coffee anytime and anywhere is met, high-pressure water can be automatically generated when the coffee is brewed, the brewed coffee is rich in fragrance, and mobile equipment can be charged.

Description

Technical Field

[0001] This invention relates to the field of coffee machine technology, and more particularly to a portable coffee machine. Background Technology

[0002] Coffee, as a signature beverage of modern lifestyle, is most commonly consumed freshly brewed coffee made directly in physical coffee shops, or coffee made using machines such as capsule coffee machines. A coffee capsule is an aluminum-shelled capsule containing ground coffee powder. By placing the aluminum-shelled capsule into a capsule coffee machine, a cup of aromatic coffee can be made immediately. Currently, existing capsule coffee machines are generally large and inconvenient to carry. Furthermore, existing capsule coffee machines pierce the top of the coffee capsule with a piercing knife, resulting in a large puncture site at the top, which leads to a significant loss of internal pressure, thus affecting the extraction efficiency and the taste of the coffee. Summary of the Invention

[0003] The purpose of this invention is to provide a coffee machine that solves the problems of existing coffee machines being too large, inconvenient to carry around for making coffee, and having poor extraction effects.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention proposes a coffee machine, including an upper housing, a lower housing, and an extraction device detachably mounted on the upper housing. The upper housing is rotatably mounted on top of the lower housing, and the bottom of the upper housing has a mounting cavity. The extraction device is detachably connected to the mounting cavity. The extraction device includes an extraction needle, an extraction seat body and an extraction cover body detachably connected to each other. The extraction cover body has an extraction cavity with a through hole. The pointed end of the extraction needle passes through the through hole and is located in the extraction cavity. The connecting end of the extraction needle is connected to the mounting cavity. The extraction seat body has a liquid outlet through hole and a liquid outlet connecting seat communicating with the liquid outlet through hole. The liquid outlet connecting seat has a liquid outlet needle and an extraction mesh. The extraction mesh is sleeved on the connecting end of the liquid outlet needle, and a gap is provided between the extraction mesh and the connecting end of the liquid outlet needle to form a liquid outlet channel.

[0005] In a further embodiment of the present invention, the center of the liquid outlet connector is provided with a groove, the groove is provided with a liquid outlet hole communicating with the liquid outlet through hole, a connector is provided in the liquid outlet hole, the connector has an internal thread hole; the connecting end of the liquid outlet needle is provided with an external thread matching the internal thread hole, and at least one flat surface is opened laterally on the periphery of the connecting end of the liquid outlet needle, the connector and the connecting end of the liquid outlet needle are connected to each other so that a gap is formed between the flat surface and the internal thread hole.

[0006] In a further embodiment of the present invention, the lower housing is provided with a mounting bracket, a heat dissipation device, a water pump, a rechargeable battery, and a first PCB circuit board. The water pump and the rechargeable battery are respectively connected to the first PCB circuit board. The mounting cavity is also provided with a water outlet connector. The water outlet end of the water pump is connected to one end of the water outlet connector through a water pipe. The other end of the water outlet connector is connected to the connection end of the extraction needle. Water injection holes are provided on both sides of the tip of the extraction needle.

[0007] In a further embodiment of the present invention, the top end of the lower housing is provided with a water tank for placing the extraction device, and the water tank is connected to the water pump via a water pipe; the top of the lower housing is provided with a water tank mounting groove and a rotating groove, and a limiting mounting seat is provided inside the lower housing below the rotating groove. The water tank is disposed in the water tank mounting groove, and the other end of the bottom of the upper housing extends with a hollow connecting part. A limiting groove is provided inside the hollow connecting part, and a limiting baffle is provided in the limiting groove. The hollow connecting part extends into the rotating groove, and the limiting mounting seat and the limiting baffle are locked together by fasteners, so that the upper housing can be rotated horizontally relative to the lower housing to adjust the angle. The extraction device is installed in the mounting cavity. When not in use, the extraction device is removed and placed in the water tank, and the upper housing is rotated horizontally back to its initial position.

[0008] In a further embodiment of the present invention, the surface of the rotating groove is provided with a plurality of equidistant annular hemispherical cavities and bosses, and the surface of the bosses is provided with semi-circular cavities; the bottom of the upper shell is provided with a semi-annular groove near the hollow connecting part, and one end of the semi-annular groove is provided with a raised hemisphere that mates with the hemispherical cavity, and the raised hemisphere is adapted to any one of the hemispherical cavities.

[0009] In a further embodiment of the present invention, a heating plate is provided at the bottom of the water tank, the heating plate is electrically connected to the first PCB circuit board, and a temperature sensor is provided on the heating plate and electrically connected to the heating plate; a detachable cover is provided at the top of the water tank, and a water outlet and a mounting hole are provided at the bottom of the water tank. The water outlet is connected to the water inlet of the water pump through a water pipe, and the temperature sensor is located in the mounting hole.

[0010] In a further embodiment of the present invention, the extraction cover body is further provided with a powder container for holding coffee powder. The powder container includes a powder box and a powder cover fastened to the powder box. The powder cover has an opening. The powder box has a powder cavity with an opening at the top. The bottom surface of the powder cavity has a powder cavity opening at the center. The powder container is placed in the extraction cavity. The liquid dispensing needle and the extraction mesh pass through the powder cavity opening and are located in the powder cavity. The pointed end of the extraction needle passes through the through hole and the opening in sequence and is located in the powder cavity.

[0011] In a further embodiment of the present invention, a second PCB circuit board and a switch guide post are provided inside the upper housing. The first PCB circuit board is electrically connected to the second PCB circuit board, and a spring is sleeved on the switch guide post. A placement slot is provided inside the upper housing near the protruding hemisphere, and the switch guide post is placed in the placement slot. A limit switch module is provided on the second PCB circuit board. One end of the switch guide post abuts against the limit switch module, and the other end of the switch guide post is adapted to the semi-circular cavity. When one end of the switch guide post is located in the semi-circular cavity on the protrusion, the other end of the switch guide post moves away from the limit switch module. When one end of the switch guide post moves away from the semi-circular cavity, the other end of the switch guide post touches the limit switch module by being compressed and raised by the spring.

[0012] In a further embodiment of the present invention, a sealing ring is provided between the extraction seat and the extraction cover.

[0013] In a further embodiment of the present invention, the extraction mesh has a porous structure or a narrow slit structure.

[0014] In the coffee machine of the present invention, the upper housing is rotatably mounted on top of the lower housing, allowing the upper housing to rotate horizontally 180 degrees relative to the lower housing. The extraction device is then installed in the mounting cavity of the upper housing to extract coffee. When making coffee, the coffee capsules can typically have a single capsule capacity of 10-15 grams, extracting 150-500 ml of coffee liquid, or a single capsule capacity of 5-8 grams, with an extraction volume concentrated in 25-50 ml. After placing the coffee capsule in the extraction chamber of the extraction cap of the extraction device, the extraction seat and the extraction cap are connected. Simultaneously, the tip of the dispensing needle of the extraction seat pierces into the coffee capsule from the center of the bottom, so that the tip of the dispensing needle and the extraction mesh are located inside the coffee capsule, and the tip of the extraction needle pierces into the extraction chamber placed in the extraction device. The coffee capsule is positioned at the top center of the chamber. When the brewing process begins, hot water flows from the water tank into the extraction needle via the water pump. High-pressure water is then sprayed laterally from the sides of the extraction needle through the water inlets, forming a circulation around the inner wall of the coffee capsule. The water flows along the inner wall to the extraction mesh at the bottom center. The filtered coffee liquid then flows out through the outlet channel, achieving high-pressure extraction. The water flow path during the circulation extraction process is approximately twice the length of a normal direct current path, thus fully saturating the coffee powder inside the capsule and significantly improving extraction efficiency and effect. Therefore, the coffee machine provided by this invention has a simple overall structure and small size, making it easy for users to store and carry, meeting their needs for coffee anytime, anywhere. It automatically generates high-pressure water during brewing, producing a rich and aromatic coffee. The rotatable upper shell design allows the coffee cup to be placed directly on the table during brewing, making it even more convenient to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the coffee machine provided in this embodiment of the invention. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the overall structure of the coffee machine provided in this embodiment of the invention. Figure 2 .

[0017] Figure 3 This is a schematic diagram of the extraction device of the coffee machine provided in an embodiment of the present invention. Figure 1 .

[0018] Figure 4 This is a schematic diagram of the extraction device of the coffee machine provided in an embodiment of the present invention. Figure 2 .

[0019] Figure 5 This is a cross-sectional view of the extraction device of the coffee machine provided in an embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of the extraction mesh of the coffee machine provided in an embodiment of the present invention being fitted onto the dispensing needle.

[0021] Figure 7 This is an exploded view of the upper casing of the coffee machine provided in an embodiment of the present invention.

[0022] Figure 8 This is an overall schematic diagram of the upper casing of the coffee machine provided in an embodiment of the present invention.

[0023] Figure 9 This is a cross-sectional view of the overall structure of the coffee machine provided in an embodiment of the present invention.

[0024] Figure 10 This is a schematic diagram of the coffee machine in its unfolded, rotated, and stowed states according to an embodiment of the present invention. Detailed Implementation

[0025] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can 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 the invention and to fully convey the scope of the invention to those skilled in the art.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0030] To illustrate the technical solution described in this invention, specific embodiments are described below.

[0031] Please see Figures 1 to 10As shown, the coffee machine provided in this embodiment of the invention includes an upper housing 100, a lower housing 200, and an extraction device 300 detachably disposed on the upper housing 100. The upper housing 100 is rotatably disposed on the top of the lower housing 200. One bottom end of the upper housing 100 is provided with a mounting cavity 110 for assembling the extraction device 300. The extraction device 300 is connected by a thread or can be installed on the mounting cavity 110 for brewing coffee by other means such as snap-fit. The extraction device 300 includes an extraction needle 310, an extraction seat 320, and an extraction cap 330. The extraction seat 320 and the extraction cap 330 are connected by a thread or can be connected by other means such as snap-fit. The cavity 110 is equipped with a water outlet connector 111, one end of which is connected to the connecting end of the extraction needle 310. The extraction needle 310 has water inlets 311 on both sides of its pointed end, allowing for greater pressure and stronger impact when hot water flows out, thus ensuring thorough contact between the hot water and the coffee powder inside the coffee capsule, resulting in more complete brewing. The extraction cap 330 has an extraction chamber 332 with a through hole 331, through which the pointed end of the extraction needle 310 passes and is located within the extraction chamber 332. The extraction seat 320 has a liquid outlet through hole 321 and a liquid outlet connector 323 communicating with the through hole 321. The liquid outlet connector 323 has a liquid outlet needle 324 and an extraction mesh 325. Five sets are provided at the connecting end of the dispensing needle 324. A gap is provided between the extraction mesh 325 and the connecting end of the dispensing needle 324 to form a dispensing channel 326. When making coffee, the coffee capsule can be generally between 10-15 grams per capsule, which can extract 150-500 ml of coffee liquid, or the single capsule can be mostly between 5-8 grams, with the extraction volume concentrated in 25-50 ml. After the coffee capsule 600 is placed in the extraction chamber 332 of the extraction cover 330 of the extraction device, the extraction seat 320 and the extraction cover 330 are connected by threads. At the same time, the pointed end of the dispensing needle 324 of the extraction seat 320 pierces into the coffee capsule from the middle of the bottom of the coffee capsule, so that the pointed end of the dispensing needle 324 and the extraction mesh 325 are connected. Located inside the coffee capsule, the extraction needle 310, with its pointed end inserted into the top center of the coffee capsule placed in the extraction chamber 332 of the extraction device, is positioned inside the coffee capsule. When the brewing process is started, hot water is pumped from the water tank into the extraction needle via the water pump 230. High-pressure water is then sprayed laterally from the sides of the water injection holes on both sides of the extraction needle to the inner ring wall of the coffee capsule, forming a circulation. The water flows along the inner ring wall of the coffee capsule to the extraction mesh at the bottom center. The filtered coffee liquid then flows out through the liquid outlet channel, achieving high-pressure extraction. The water flow path length during the circulation extraction process is approximately twice that of a normal direct current path, thus fully immersing and extracting the coffee powder inside the coffee capsule, greatly improving the extraction efficiency and extraction effect.

[0032] In an embodiment of the present invention, the center of the liquid outlet connector 323 is provided with a groove 327. Water flows along the inner ring wall of the coffee capsule to the groove 327 at the bottom center, effectively preventing water from overflowing the liquid outlet connector 323. The groove 327 is provided with a liquid outlet hole 322 communicating with the liquid outlet through hole 321. A connector 340 is provided in the liquid outlet hole 322. The connector 340 has an internal thread hole. The connecting end of the liquid outlet needle 324 is provided with an external thread that matches the internal thread hole. At least one flat surface 3241 is laterally opened on the periphery of the connecting end of the liquid outlet needle 324. The connector 340 and the connecting end of the liquid outlet needle 324 are connected to each other so that a gap 328 is formed between the flat surface 3241 and the internal thread hole. The coffee liquid flows along the gap to the liquid outlet through hole 321 to complete the coffee making.

[0033] In an embodiment of the present invention, the lower housing 200 is provided with a mounting bracket 210, a heat dissipation device 220, a water pump 230, a rechargeable battery 240, and a first PCB circuit board 250. One top end of the lower housing 200 is provided with a water tank 260 for placing the extraction device 300. The water tank 260 is used to inject water and is connected to the inlet end of the water pump 230 via a water pipe 500. The outlet end of the water pump 230 is connected to one end of the outlet connector 111 via a water pipe 500. The rechargeable battery 240 has a capacity of up to 20,000 kWh. With a capacity of 2.5 to 3 times that of existing coffee machines on the market, including a high mAh capacity, the heat dissipation device 220 effectively solves the problem of excessive internal temperature of the lower casing 200 caused by the heating of the high-power heating plate 261. It dissipates heat during operation, preventing overheating of the lower casing and significantly improving the product's internal heat dissipation. The mounting bracket 210 has a first placement slot 211, a second placement slot 212, and a third placement slot 213. The water tank 260 is fixed to the first placement slot 211 with fasteners, and the water pump 230 is fixed to the second placement slot 212 located below the water tank 260 with fasteners. The first PCB circuit board 250 is located in the third placement slot 213. The heat dissipation device 220, the water pump 230, and the rechargeable battery 240 are respectively connected to the first PCB circuit board 250. A second PCB circuit board 120 is provided inside the upper casing 100, and the first PCB circuit board 250 is connected to the second PCB circuit board 120.

[0034] In an embodiment of the present invention, the top of the lower housing 200 is provided with a water tank mounting groove 270 and a rotating groove 280. The water tank mounting groove 270 is connected to the mounting bracket 210 by fasteners. A limiting mounting seat 290 is provided inside the lower housing 200 below the rotating groove 280. The water tank body 260 is installed in the water tank mounting groove 270. A hollow connecting portion 130 extends from the other end of the bottom of the upper housing 100. A limiting groove 131 is provided inside the hollow connecting portion 130. The limiting groove 131 is provided with a limiting baffle 132. The hollow connecting part 130 extends into the rotating groove 280 and the limiting mounting seat 290 is locked to the limiting baffle 132 by fasteners, so that the upper housing 100 can be rotated horizontally relative to the lower housing 200 to adjust the angle. The extraction device 300 is installed in the mounting cavity 110. When not in use, the extraction device 300 is removed and placed in the water tank 260, and the upper housing 100 is rotated horizontally back to the initial position.

[0035] In an embodiment of the present invention, the surface of the rotating groove 280 is provided with a plurality of equidistant annular hemispherical cavities 281 and bosses 282, and the surface of the bosses 282 is provided with semi-circular cavities 283; the bottom of the upper housing 100 near the hollow connecting part 130 is provided with a semi-annular groove 133, and one end of the semi-annular groove 133 is provided with a raised hemisphere 134 that cooperates with the hemispherical cavity 133. The raised hemisphere 134 is adapted to any one of the hemispherical cavities 133. When the upper housing 100 is rotated, the raised hemisphere 134 moves from one hemispherical cavity 133 to the next hemispherical cavity 133 to effectively prevent misalignment.

[0036] In an embodiment of the present invention, a heating plate 261 is provided at the bottom of the water tank 260. The heating plate 261 can heat 60 ml of room temperature water to 92 degrees Celsius in about 1 minute. 92 degrees Celsius is a suitable temperature for most coffee extractions, achieving rapid heating of cold water, increasing heating power, and greatly improving the user experience. The heating plate 261 is electrically connected to the first PCB circuit board 250. The heating plate 261 is equipped with a temperature sensor 262 for monitoring and controlling the temperature, and the temperature sensor 262 is electrically connected to the heating plate 261. The top of the water tank 260 is provided with a detachable cover 263. The water tank 260 and the cover 263 are connected by threads or other means such as snap-fit ​​connections. The bottom of the water tank 260 is provided with a water outlet and a mounting hole. The water outlet is connected to the water inlet of the water pump 230 through a water pipe 500. The temperature sensor 262 is located in the mounting hole for monitoring and controlling the temperature of the water in the water tank.

[0037] In an embodiment of the present invention, the extraction cover 330 is further provided with a powder container for holding coffee powder, which can be used as a self-filling coffee powder container, allowing users to select the maximum variety of coffee types; the powder container includes a powder box and a powder cover fastened to the powder box, the powder cover has an opening, the powder box has a powder cavity with an opening at the top, and the bottom surface of the powder cavity has a powder cavity opening at the center; the powder container is placed in the extraction cavity, the liquid dispensing needle and the extraction mesh pass through the powder cavity opening and are located in the powder cavity, and the pointed end of the extraction needle passes through the through hole and the opening in sequence and is located in the powder cavity.

[0038] In an embodiment of the present invention, the first PCB circuit board 250 is provided with a charging port 251, multiple output ports 252, indicator lights 253, and a switch module 254. The front of the lower housing 200 is provided with a button board 201. The button board 201 is provided with a charging slot 202, an output slot 203, an indicator light hole 204, and a switch button 205. The charging slot 202 is connected to the charging port 251, the output slot 203 is connected to the output port 252, the indicator light hole 204 is connected to the indicator light 253, and the switch module 254 is connected to the switch button 205. An external charging power supply charges the rechargeable battery 240 through the first PCB circuit board 250. The rechargeable battery 240 supplies power to the output port 252 and the second PCB circuit board 120 through the first PCB circuit board 250. The output port 252 charges the mobile device, eliminating the need to carry an additional power bank.

[0039] In an embodiment of the present invention, a switch guide post 140 is further provided inside the upper housing 100, and a spring 150 is sleeved on the switch guide post 140; a placement slot 160 is provided inside the upper housing 100 near the protruding hemisphere 134, and the switch guide post 140 is placed in the placement slot 160; a limit switch module 121 is provided on the second PCB circuit board 120, one end of the switch guide post 140 abuts against the limit switch module 121, and the other end of the switch guide post 140 is adapted to the semi-circular cavity 283. When one end of the switch guide post 140 is located in the semi-circular cavity 283 on the protrusion, the other end of the switch guide post 140 moves away from the limit switch module 121; when one end of the switch guide post 140 moves away from the semi-circular cavity 283, the switch guide post 140 moves away from the protrusion. The other end of 40 is lifted by the compression of the spring 150 and touches the limit switch module 121. When the upper housing 100 rotates 180 degrees horizontally relative to the lower housing 200, one end of the switch guide post 140 is pushed up and presses against the limit switch module 121 to switch to the coffee brewing function mode. At this time, the power bank discharge function module is disabled or restricted. When one end of the switch guide post 140 moves away from the limit switch module 121, the power bank function mode is switched. The limit switch module of the second PCB circuit board 120 realizes the switching between the power bank and the coffee brewing function module, avoiding the functional impact caused by voltage instability and other factors when using two functions at the same time. For example, when using the extraction and heating of cold water function, the battery output voltage will be pulled down because a large power is required. If the power bank function is also used at this time, it will not be able to charge because the battery voltage is pulled down.

[0040] In an embodiment of the present invention, a sealing ring 350 is provided between the extraction seat 320 and the extraction cover 330. The extraction cover 330 is provided with an annular groove 360 ​​on the outer surface of the extraction chamber 332. The sealing ring 350 is placed in the annular groove 360. The sealing ring 350 is a silicone sealing ring to effectively prevent water in the coffee capsule from overflowing from the gap between the extraction seat 320 and the extraction cover 330.

[0041] In an embodiment of the present invention, the extraction mesh 325 has a porous structure 3251 or a narrow slit structure 3252, which effectively prevents the extracted coffee grounds from flowing into the liquid outlet channel 326, thereby achieving a high-pressure extraction effect.

[0042] In an embodiment of the present invention, the bottom of the lower housing 200 is provided with a bottom cover 400, the bottom cover 400 is provided with a plurality of air inlets 401 and a plurality of air outlets 402, the bottom cover 400 is provided with a partition 403 between the air inlets 401 and the air outlets 402, the rechargeable battery 240, the first PCB circuit board 250, the water pump 230 and the heating plate 261 are located above the air outlets 402, the heat dissipation device 220 is provided above the air inlets 401, so that a U-shaped air duct is formed inside to fully cover the heat dissipation area, and the bottom of the bottom cover is provided with a plurality of anti-slip pads to effectively prevent the lower housing from sliding.

[0043] The coffee machine provided in this embodiment operates as follows: When making coffee, the upper housing is first rotated horizontally 180 degrees relative to the lower housing. The coffee capsule can have a single capsule capacity of 10-15 grams, extracting 150-500 ml of coffee liquid, or a single capsule capacity of 5-8 grams, with an extraction volume concentrated in 25-50 ml. After placing the coffee capsule into the extraction chamber of the extraction cap of the extraction device, the extraction seat and extraction cap are connected by threads. Simultaneously, the tip of the extraction needle of the extraction seat pierces into the coffee capsule from the center of the bottom, so that the tip of the extraction needle and the extraction mesh are located inside the coffee capsule. Then, the top of the extraction cap is threaded into the mounting cavity of the upper housing, while the tip of the extraction needle... After the coffee capsule is inserted into the top center of the extraction chamber of the extraction device, it is positioned inside the coffee capsule. Pressing the power button activates the heating plate inside the coffee machine to heat the cold water in the water tank. Once the temperature sensor detects that the water in the water tank has been heated to the preset temperature, the water pump pressurizes the hot water in the water tank and sprays it horizontally through the water outlet connector of the water pipe to the inner ring wall of the coffee capsule, forming a circulation. The hot water flows along the inner ring wall of the coffee capsule to the extraction mesh at the bottom center of the groove for high-pressure coffee extraction. The coffee liquid then flows out through the liquid outlet channel, completing the coffee making process. The water flow path time during the circulation extraction process is about twice that of the ordinary direct current path, thus fully saturating and extracting the coffee powder inside the coffee capsule. When not in use, the extraction unit can be removed and placed in the water tank. The upper casing can then be rotated 180 degrees horizontally relative to the lower casing to return to its initial retracted position. Therefore, users can brew coffee simply by touching the power button on the button module. The time / temperature adjustment buttons on the upper casing can be used to set the desired flavor, making coffee brewing quick and easy. When the user's mobile device runs out of power, it can be charged by plugging a data cable into the output port on the lower casing, effectively turning the coffee machine into a power bank.

[0044] In the above embodiments, the coffee machine is designed as an elongated oval shape. Its upper casing is rotatable, separating from the lower casing to utilize external space for the extraction device to make coffee, without occupying the internal space of the lower casing. This optimizes the internal space of the coffee machine, allowing for a larger space for the rechargeable battery. The battery capacity can reach 20,000 mAh or higher, which is 2.5 to 3 times that of existing models on the market. Considering the potential 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 addresses consumers' charging needs.

[0045] To address the issue of long heating times in existing products, the coffee machine of this application uses a high-capacity, high-rate discharge rechargeable battery, which increases the heating power of the heating plate by more than 2.5 times, shortening the cold water heating time to about two minutes and greatly improving the user experience.

[0046] To address the issue of excessively high internal temperatures caused by high-power heating, the coffee machine of this application incorporates a heat dissipation device and, through structural design, forms a U-shaped airflow channel within the internal space of the coffee machine. The heat dissipation area essentially covers the electronic components, ensuring that components such as the rechargeable battery and the first PCB circuit board can be effectively cooled.

[0047] The coffee machine of this application uses a limit switch module to switch between the coffee making function and the power bank discharge function. When the top shell is rotated to a predetermined position, the limit switch module is touched to switch between the power bank discharge function and the coffee making function. When switching to the coffee making function, the power bank discharge function is disabled or restricted.

[0048] This application optimizes the structure and size design of the extraction device and the water tank, placing the extraction device inside the water tank. In this stored state, the extraction device can be placed inside, making it more convenient to use.

[0049] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A coffee maker characterized in that: The utility model provides a kind of extraction device, including upper shell, lower shell and the extraction device detachably arranged in upper shell, the upper shell is rotatably arranged in the top of the lower shell, the bottom of the upper shell is equipped with mounting cavity, and the extraction device is detachably connected in the mounting cavity;Wherein, the extraction device includes extraction needle, the extraction seat body and the extraction cover body that can be mutually detachably connected, the extraction cover body is equipped with the extraction cavity with through-hole, the sharp end of the extraction needle is located in the extraction cavity by the through-hole, and the connecting end of the extraction needle is connected with the mounting cavity;The extraction seat body is equipped with liquid outlet through-hole and liquid outlet connecting seat that is communicated with liquid outlet through-hole, the liquid outlet connecting seat is equipped with liquid outlet needle and extraction mesh, the extraction mesh is sleeved on the connecting end of the liquid outlet needle, and the extraction mesh is equipped with gap with the connecting end of the liquid outlet needle to form liquid outlet passage.

2. The coffee maker of claim 1, wherein, The center of the liquid outlet connecting seat is equipped with groove, the groove is equipped with liquid outlet hole communicated with the liquid outlet through-hole, the connecting piece is equipped in the liquid outlet hole, and the connecting piece has internal thread hole;The connecting end of the liquid outlet needle is equipped with external thread matched with the internal thread hole, and the periphery of the connecting end of the liquid outlet needle is equipped with at least one flat chamfer surface, and the connecting piece is connected with the connecting end of the liquid outlet needle to form gap between the flat chamfer surface and the internal thread hole.

3. The coffee maker of claim 2, wherein, The lower shell is equipped with mounting support seat, heat dissipation device, water pump, charging battery and first PCB circuit board, and the water pump and the charging battery are connected with the first PCB circuit board respectively;The mounting cavity is also equipped with water outlet connecting piece, the water outlet end of the water pump is communicated with one end of the water outlet connecting piece through water pipe, the other end of the water outlet connecting piece is connected with the connecting end of the extraction needle, and the both sides of the sharp end of the extraction needle are equipped with water injection hole.

4. A coffee maker as claimed in claim 3, characterized in that One end of the top of the lower shell is equipped with water tank body capable of placing the extraction device, and the water tank body is connected with the water pump through water pipe;The top of the lower shell is equipped with water tank mounting groove and rotating groove, the lower shell is equipped with limiting mounting seat below the rotating groove, the water tank body is arranged in the water tank mounting groove, the other end of the bottom of the upper shell is extended and equipped with hollow connecting part, the limiting groove is equipped with limiting baffle in the hollow connecting part, the hollow connecting part extends into the rotating groove, the limiting mounting seat and the limiting baffle are locked by fastener, the upper shell can be horizontally rotated to adjust angle relative to the lower shell, the extraction device is arranged in the mounting cavity, when not used, the extraction device is taken down and placed in the water tank body, and the upper shell is horizontally rotated back to initial position.

5. The coffee maker of claim 4, wherein, The surface of the rotating groove is equipped with equidistant annular semispherical cavities and bosses, the surface of the boss is equipped with semicircular cavity;The surface of the bottom of the upper shell near the hollow connecting part is equipped with semicircular groove, one end of the semicircular groove is equipped with convex semisphere matched with the semispherical cavity, and the convex semisphere is matched with any semispherical cavity.

6. The coffee maker of claim 5, wherein, The bottom of the sump body is provided with a heating plate, the heating plate is electrically connected with the first PCB circuit board, the heating plate is provided with a temperature sensor, and the temperature sensor is electrically connected with the heating plate; the top of the sump body is provided with a detachable cover shell, the bottom of the sump body is provided with a water outlet hole and a mounting hole, the water outlet hole is communicated with the water inlet end of the water pump through a water pipe, and the temperature sensor is arranged in the mounting hole.

7. The coffee maker of claim 1, wherein, The extraction cover body is also provided with a powder bin for placing coffee powder, the powder bin comprises a powder box and a powder cover buckled on the powder box, the powder cover is provided with an opening, the powder box is provided with a powder cavity with an open upper end, and the bottom surface of the powder cavity is provided with a powder cavity opening; the powder bin is placed in the extraction cavity, the liquid outlet needle and the extraction mesh pass through the powder cavity opening and are located in the powder cavity, and the sharp end of the extraction needle passes through the through hole and the opening in sequence and is located in the powder cavity.

8. The coffee maker of claim 3, wherein, The upper shell is provided with a second PCB circuit board and a switch guide column, the first PCB circuit board is electrically connected with the second PCB circuit board, and the switch guide column is sleeved with a spring; the upper shell is provided with a placing slot hole near the convex hemispherical part, and the switch guide column is arranged in the placing slot hole; the second PCB circuit board is provided with a limit switch module, one end of the switch guide column abuts against the limit switch module, and the other end of the switch guide column is matched with the semicircular recess; when one end of the switch guide column is located in the semicircular recess on the convex part, the other end of the switch guide column is away from the limit switch module, and when one end of the switch guide column is away from the semicircular recess, the other end of the switch guide column is lifted to touch the limit switch module through compression of the spring.

9. The coffee maker of claim 1, wherein, The extraction seat body and the extraction cover body are provided with a sealing ring.

10. The coffee maker of claim 1, wherein, The extraction mesh is in a porous structure or a narrow slit structure.

Images