Portable coffee maker and spherical lid thereof

Abstract

The utility model provides a kind of portable coffee machine and its spherical cover, portable coffee machine includes shell, cup cover, water cup, heating sheet, booster pump, shower plate, powder cup and spherical cover, spherical cover includes elastic cover body and elastic collar, elastic cover body is bent with spherical camber, and the middle part of elastic cover body is equipped with through hole, the support end surface of elastic cover body is projected and set elastic collar, and the inner ring sleeve hole of elastic collar is communicated with the content cavity of elastic cover body;Elastic collar can be detachably adapted on the lower end of powder cup, elastic collar can be detachably covered in the upper opening of water cup, and elastic collar can be detachably adapted in installation ring place.The portable coffee machine can dredge and repair the pipeline of booster pump without user disassembling parts, and the operation steps are simple and convenient;Can prevent coffee liquid from spraying phenomenon;Coffee powder cake in powder cup can be blown out quickly and completely, reduce user cleaning burden, improve user experience, increase the interestingness of operation.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, and in particular to a portable coffee machine and its spherical lid. Background Technology

[0002] Portable coffee machines are small and lightweight, making them easy for users to carry and meet their coffee-making needs in different scenarios. They are especially suitable for outdoor camping, travel, office use, or car use.

[0003] The existing portable coffee machine has a water cup, heating element and pump body inside the casing. The bottom of the casing has a bottom cover and sealing plate connected to the pump body. The sealing plate has a shower head. The shower head is sealed with the powder cup, so that the high temperature and high pressure water sprayed by the shower head enters the powder cup to extract the coffee powder in the powder cup. The coffee powder in the powder cup dissolves and extracts soluble compounds (such as aromatic substances, oils, acids, etc.) from the coffee beans under the brewing of high temperature and high pressure water. The extracted coffee liquid flows out into the coffee cup through the liquid outlet of the powder cup.

[0004] However, existing portable coffee machines have a large outlet hole at the bottom of the coffee powder cup. When the bottom of the coffee powder cup is above the coffee cup and there is a gap, the large outlet hole at the bottom of the coffee powder cup will cause coffee liquid to spray out of the coffee cup and pollute the surrounding environment, increasing the user's cleaning burden.

[0005] Furthermore, in existing portable coffee machines, after coffee extraction, users need to remove the coffee caddy and invert it so that the open end faces down, then shake and tap the caddy to pour out the coffee grounds. However, after being brewed with high-temperature, high-pressure water, the coffee grounds stick to the inner wall of the caddy. Users need to shake and tap the caddy forcefully to remove the coffee grounds, increasing the effort required to pour out the coffee grounds and affecting user satisfaction. Moreover, the coffee grounds sticking to the inner wall of the caddy will break into pieces and fall off under the force of shaking and tapping, scattering over a wide area, requiring users to clean up the scattered coffee grounds, increasing their cleaning workload.

[0006] In addition, existing portable coffee machines have a problem with foreign objects clogging the pump pipes. Once the pump pipes are blocked, users need to disassemble the casing, water cup, pump body, bottom cover, sealing plate and other parts to clear the blockage. The operation is cumbersome and troublesome, which affects the user experience. Summary of the Invention

[0007] To achieve the primary objective of this invention, a portable coffee machine is provided that allows users to unclog and repair the booster pump's pipes without disassembling parts. This simplifies and simplifies the unclogging process, prevents coffee spillage, reduces the user's cleaning burden, and quickly and completely blows out the coffee powder from the cup without requiring the user to shake or tap the cup to remove the coffee powder adhering to the inner wall. This reduces the effort required to pour the coffee powder out of the cup and prevents the coffee powder from falling out in a fragmented state, further reducing the user's cleaning burden. Therefore, this invention enhances the user experience and increases the enjoyment of operation.

[0008] To achieve the second objective of this utility model, this utility model provides a spherical cover that is simple in structure and stable and reliable in operation and can be applied to the above-mentioned portable coffee machine.

[0009] To achieve the primary objective of this utility model, a portable coffee machine is provided, comprising a casing, a lid, a water cup, a heating element, a booster pump, a spray nozzle, a powder cup, and a spherical cap. The water cup is located inside the upper part of the casing. The lid is detachably fitted onto the upper opening of the water cup. The heating element is mounted on the water cup. The booster pump is located inside the casing, with its inlet pipe connected to the water cup and its outlet pipe connected to a water supply hole on the lower end face of the casing. The spray nozzle is located at the lower end of the casing, forming a liquid storage chamber with the lower end face of the casing. The spray nozzle has multiple spray holes. The lower end of the casing protrudes. The powder cup is equipped with an installation ring, and the powder cup can be detachably connected to the installation ring. The lower end face of the powder cup has multiple liquid outlet holes. The spherical cap includes an elastic cap body and an elastic collar. The elastic cap body is curved in a spherical arc, and a flow hole is opened in the middle of the elastic cap body. The support end face of the elastic cap body is provided with an elastic collar. The outer circumference of the elastic collar is smaller than the outer circumference of the support end face, and the inner ring hole of the elastic collar is connected to the inner cavity of the elastic cap body. The elastic collar can be detachably fitted to the lower end of the powder cup, can be detachably fitted to the upper opening of the water cup, and can be detachably fitted to the installation ring.

[0010] A preferred embodiment is that the powder cup includes a stainless steel cup and a locking cup sleeve. The lower end face of the stainless steel cup has multiple liquid outlet holes, and the stainless steel cup is supported in the receiving hole of the locking cup sleeve to insulate the stainless steel cup from heat. There is an insertion ring cavity between the lower peripheral wall of the stainless steel cup and the lower peripheral wall of the receiving hole. An elastic collar can be detachably inserted into the insertion ring cavity and fitted onto the lower peripheral wall of the stainless steel cup, and the supporting end face of the elastic cap can press against the lower end face of the locking cup sleeve. Alternatively, the elastic collar can be detachably pressed against the lower end face of the stainless steel cup, and the supporting end face of the elastic cap can press against the lower end face of the locking cup sleeve, so that the peripheral wall of the receiving hole abuts against the outer peripheral surface of the elastic collar.

[0011] A further alternative is that a protruding ring is provided on the lower peripheral wall of the sleeve hole, and the protruding ring can press against the outer peripheral wall of the elastic collar; and / or, the outer peripheral wall of the elastic collar is inclined inward away from the guide peripheral surface of the elastic cover.

[0012] A further improvement is that the upper open end of the stainless steel cup is provided with an outward-folding buckle on the outer periphery. The outward-folding buckle is fastened to the upper ring wall of the locking cup sleeve. The powder cup also includes an open retaining ring. The outer periphery of the stainless steel cup is provided with a first ring groove, and the peripheral wall of the receiving sleeve hole is provided with a second ring groove. The open retaining ring is engaged in the first ring groove, and the outer periphery of the open retaining ring protrudes from the first ring groove and is embedded in the second ring groove.

[0013] A further solution is to have an internal thread on the inner circumferential wall of the mounting ring and an external thread on the upper outer circumferential wall of the locking cup sleeve. The external thread and the internal thread can be detached and connected, so that the upper end of the stainless steel cup abuts against the lower end face of the housing.

[0014] A further embodiment is that the outer periphery of the support end face is recessed with an arc-shaped groove, and the support end face can be detachably inserted into the upper opening of the water cup and abut against the inner peripheral wall of the upper opening of the water cup; and / or, a cross rib is provided in the flow hole.

[0015] A further design includes an outer lid, an inner lid, and a sealing ring. The inner lid is located inside the outer lid and forms a venting cavity with the inner side of the outer lid. A through hole is provided in the middle of the inner lid. A positioning post protrudes from the inner side of the outer lid and is inserted into the through hole, forming an air venting gap with the peripheral wall of the through hole. The outer lid has multiple air vents evenly arranged around the positioning post. A limiting ring groove is provided on the outer periphery of the outer lid. The sealing ring includes a first elastic ring segment and a second elastic ring segment connected in an L-shape. The first elastic ring segment is embedded in the limiting ring groove, and the second elastic ring segment protrudes from the limiting ring groove and can press against the inner peripheral wall of the upper opening of the cup.

[0016] A further improvement is that the water cup has a support ring plate on its outer periphery, and a support plate and a buckle are installed inside the casing. The protruding part of the buckle is located above the support plate and forms an installation groove with the support plate. The support ring plate is located in the installation groove.

[0017] A further embodiment of the portable coffee machine includes a circuit board located inside the housing and electrically connected to the heating element and the booster pump. The circuit board has a push-button switch, and the housing's periphery has a corresponding touch panel. Alternatively, the circuit board has a light-emitting element, and the housing's periphery has a corresponding light guide strip. Or, the portable coffee machine also includes a battery and a resilient seal. The battery is located inside the housing and electrically connected to the circuit board. The circuit board has a charging head. The housing's periphery has a through-hole groove corresponding to the charging head, and a mounting hole. A limiting groove is formed on the outer periphery of the housing corresponding to the through-hole groove and the mounting hole. The resilient seal can be interference-fitted into the limiting groove. A resilient connecting rod protrudes from the inner side of the first end of the resilient seal, adapting to the mounting hole. A gripping plate protrudes from the second end of the resilient seal.

[0018] To achieve the second objective of this utility model, this utility model provides a spherical cover, including an elastic cover body and an elastic collar. The elastic cover body is curved in the shape of a spherical arc, and a flow hole is provided in the middle of the elastic cover body. The elastic collar is provided with a protruding support end face of the elastic cover body. The outer circumference of the elastic collar is smaller than the outer circumference of the support end face, and the inner ring hole of the elastic collar is connected to the inner cavity of the elastic cover body. The spherical cover is the spherical cover used in the above-mentioned portable coffee machine.

[0019] In this portable coffee machine, during the coffee extraction process, the user places coffee powder into the powder cup and connects it to the mounting ring at the bottom of the machine casing. The elastic collar of the spherical cap is then fitted onto the bottom of the powder cup, controlling the heating element to heat the water in the cup. The cup lid is then closed at the top opening of the cup. A booster pump draws the hot water from the cup, pressurizes it, and sends it to the water supply hole on the bottom surface of the machine casing. This water supply hole delivers the high-temperature, high-pressure water to the reservoir formed between the shower head and the bottom surface of the machine casing. The high-temperature, high-pressure water is then sprayed downwards from multiple spray holes on the shower head into the powder cup, thus irrigating the powder inside. Coffee powder is brewed and extracted. Under high temperature and high pressure, the coffee powder in the cup dissolves and extracts soluble compounds (such as aromatic substances, oils, acids, etc.) from the coffee beans. The extracted coffee liquid flows out through multiple outlet holes at the bottom of the cup into the inner cavity of the spherical cap. Because the elastic cap of the spherical cap is curved with a spherical arc, the coffee liquid in the inner cavity of the spherical cap flows to the flow hole in the middle, allowing the coffee liquid to flow out into the coffee cup through the flow hole in the middle of the elastic cap, preventing the coffee liquid from spraying out of the coffee cup and polluting the surrounding environment, thereby reducing the user's cleaning burden.

[0020] After coffee extraction is complete, the coffee puck, brewed and extracted by high-temperature, high-pressure water, adheres to the inner wall of the coffee cup. The user then removes the coffee cup from the mounting ring at the bottom of the machine. The user then inverts the coffee cup so that the top opening faces downwards. When the coffee cup is placed with the top opening facing downwards, the spherical cap, which is fitted at the bottom of the coffee cup, is positioned above the coffee cup. Because the elastic cap has the ability to deform, the user can block the flow hole in the middle of the elastic cap with their finger and press down on the elastic cap. The air inside the spherical cap is then quickly blown into the coffee cup through the liquid outlet. Under the propulsion of the airflow, the coffee puck in the coffee cup can be quickly detached and poured out, ensuring that the coffee puck is blown out completely.

[0021] When the booster pump of this portable coffee machine fails to pump liquid properly due to foreign matter clogging the pipes, the user can remove the lid from the top opening of the cup, then attach the elastic ring of the spherical cap to the top opening of the cup. The user can then block the flow hole in the middle of the elastic cap with their finger and press the cap. Air from inside the cap will be quickly blown into the booster pump's pipes through the cup's outlet. The airflow will then clear and repair the booster pump's pipes. Alternatively, the user can attach the elastic ring of the spherical cap to the mounting ring. Again, by blocking the flow hole in the middle of the cap and pressing it, air from inside the cap will be quickly blown into the booster pump's pipes through the spray and water supply holes. This method allows for clearing and repairing the booster pump's pipes without disassembling parts, making the process simple and convenient.

[0022] Therefore, this portable coffee machine allows users to unclog and repair the booster pump pipes without disassembling parts, making the pipe unclogging process simple and convenient. It also prevents coffee from spraying out, reducing the user's cleaning burden. Furthermore, it can quickly and completely blow the coffee puck out of the coffee cup without the user having to shake or tap the cup to remove the coffee puck stuck to the inner wall of the cup. This reduces the effort required to pour the coffee puck out of the cup and prevents the coffee puck from falling out in a scattered state, further reducing the user's cleaning burden. Therefore, it improves the user experience and increases the fun of operation. Attached Figure Description

[0023] Figure 1 This is a first-view structural diagram of an embodiment of the portable coffee machine of this utility model.

[0024] Figure 2 This is a second-view structural diagram of an embodiment of the portable coffee machine of this utility model.

[0025] Figure 3 This is a cross-sectional view of an embodiment of the portable coffee machine of this utility model.

[0026] Figure 4 yes Figure 3 Enlarged view at point A.

[0027] Figure 5 yes Figure 3 Enlarged view at point B.

[0028] Figure 6 This is an exploded view of the cup lid in an embodiment of the portable coffee machine of this utility model.

[0029] Figure 7 This is a partial exploded view of an embodiment of the portable coffee machine of this utility model.

[0030] Figure 8 This is an exploded view of the water cup, support plate, and buckle assembly in an embodiment of the portable coffee machine of this utility model.

[0031] Figure 9 This is a cross-sectional view of the water cup, support plate, and buckle in an embodiment of the portable coffee machine of this utility model.

[0032] Figure 10 This is a structural diagram of the spherical lid and a powder cup in an embodiment of the portable coffee machine of this utility model.

[0033] Figure 11 This is an exploded view of the spherical lid and a powder cup in an embodiment of the portable coffee machine of this utility model.

[0034] Figure 12 This is a cross-sectional view of the spherical lid and a powder cup in an embodiment of the portable coffee machine of this utility model.

[0035] Figure 13 yes Figure 12 Enlarged view at point C.

[0036] Figure 14 This is a cross-sectional view of the spherical cover in an embodiment of the portable coffee machine of this utility model.

[0037] Figure 15 This is a schematic diagram of the blowing operation state of the spherical cover and a powder cup in an embodiment of the portable coffee machine of this utility model.

[0038] Figure 16 This is a schematic diagram of the blowing operation state of the spherical cover and another powder cup in an embodiment of the portable coffee machine of this utility model.

[0039] Figure 17 This is a schematic diagram of the pipe unblocking operation when the spherical lid and water cup are in conjunction in an embodiment of the portable coffee machine of this utility model.

[0040] Figure 18 This is a schematic diagram of the pipe unblocking operation state when the spherical cover and the mounting ring are engaged in the portable coffee machine embodiment of this utility model.

[0041] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0042] See Figure 1 and Figure 14 This embodiment discloses a portable coffee machine 10, including a housing 11, a lid 12, a water cup 15, a heating element 16, a booster pump 17, a spray nozzle 19, and a coffee powder cup 13. The water cup 15 is located inside the upper part of the housing 11. The lid 12 can be detachably fitted onto the upper opening of the water cup 15. The heating element 16 is disposed on the water cup 15. The booster pump 17 is disposed inside the housing 11, and the water inlet pipe of the booster pump 17 is connected to the water cup 15. The water outlet pipe of the booster pump 17 is connected to the water supply hole 115 on the lower end face of the housing 11. The shower plate 19 is set at the lower end of the housing 11 and forms a liquid storage chamber 191 between it and the lower end face of the housing 11. The shower plate 19 has multiple spray holes 192. The lower end of the housing 11 is provided with a mounting ring 114. The powder cup 13 is detachably connected to the mounting ring 114. The lower end face of the powder cup 13 has multiple liquid outlet holes 1312.

[0043] Furthermore, the portable coffee machine 10 in this embodiment also includes a spherical cover 14, which includes an elastic cover body 141 and an elastic collar 146. The elastic cover body 141 is curved in the shape of a spherical arc, and a flow hole 142 is provided in the middle of the elastic cover body 141. The elastic collar 146 is provided with a protrusion on the supporting end face 144 of the elastic cover body 141. The outer circumference of the elastic collar 146 is smaller than the outer circumference of the supporting end face 144. The inner ring hole of the elastic collar 146 is connected to the inner cavity 147 of the elastic cover body 141. Moreover, the elastic collar 146 can be detachably fitted to the lower end of the powder cup 13, and the elastic collar 146 can be detachably fitted to the upper opening of the water cup 15. The elastic collar 146 can be detachably fitted to the mounting ring 114.

[0044] In this embodiment, during the coffee extraction process of the portable coffee machine 10, the user places coffee powder into the powder container 13 and connects the powder container 13 to the mounting ring 114 at the lower end of the machine housing 11. At this time, the elastic collar 146 of the spherical cover 14 is fitted and installed on the lower end of the powder container 13, and the heating element 16 is controlled to heat the water in the water cup 15. At this time, the cup lid 12 is closed and installed on the upper opening of the water cup 15. Figure 3As shown, the booster pump 17 draws high-temperature water from the water cup 15, pressurizes it, and sends it to the water supply hole 115 on the lower end face of the housing 11. The water supply hole 115 then delivers the high-temperature, high-pressure water to the liquid storage chamber 191 formed between the shower head 19 and the lower end face of the housing 11. This causes the high-temperature, high-pressure water to spray downwards from the multiple spray holes 192 of the shower head 19 into the coffee powder cup 13, brewing and extracting the coffee powder within. Under the influence of the high-temperature, high-pressure water, the coffee powder in the cup 13 dissolves and extracts soluble compounds (such as aromatic substances, oils, and acids) from the coffee beans. The extracted coffee liquid flows out through multiple outlet holes 1312 at the lower end of the powder cup 13 into the inner cavity 147 of the spherical cap 14. Since the elastic cap 141 of the spherical cap 14 is curved with a spherical arc surface, the coffee liquid in the inner cavity 147 of the spherical cap 14 flows to the flow hole 142 in the middle, so that the coffee liquid flows out into the coffee cup through the flow hole 142 in the middle of the elastic cap 141 of the spherical cap 14, preventing the coffee liquid from spraying out and polluting the surrounding environment, thereby reducing the user's cleaning burden.

[0045] After coffee extraction is complete, the coffee grounds, extracted by high-temperature and high-pressure water, adhere to the inner wall of the coffee caddy 13. The user then removes the coffee caddy 13 from the mounting ring 114 at the lower end of the housing 11. The user then inverts the coffee caddy 13 so that its upper opening faces downwards. When the upper opening of the coffee caddy 13 is placed downwards, the spherical cap 14, which is fitted onto the lower end of the coffee caddy 13, is positioned above the coffee caddy 13. Figure 15 As shown, since the elastic cap 141 of the spherical cap 14 has elastic deformation capability, the user can block the flow hole 142 in the middle of the elastic cap 141 of the spherical cap 14 with their finger and press down on the elastic cap 141 of the spherical cap 14. The air inside the spherical cap 14 is quickly blown into the coffee powder cup 13 through the liquid outlet hole 1312 of the coffee powder cup 13. Under the pushing action of the airflow, the coffee powder in the coffee powder cup 13 can be quickly detached and poured out, and the coffee powder is blown out and detached completely.

[0046] When the booster pump 17 of the portable coffee machine 10 in this embodiment fails to pump liquid properly due to foreign matter clogging the pipe, the user can remove the cup lid 12 that is fitted onto the upper opening of the water cup 15, and then fit the elastic collar 146 of the spherical cap 14 onto the upper opening of the water cup 15. Figure 17 As shown, the user can block the flow hole 142 in the middle of the elastic cover 141 of the spherical cap 14 with their finger and press the elastic cover 141 of the spherical cap 14. The air inside the spherical cap 14 is then quickly blown into the pipe of the booster pump 17 through the outlet of the water cup 15. Driven by the airflow, the pipe of the booster pump 17 can be cleared and repaired. Additionally, the user can adapt and install the elastic collar 146 of the spherical cap 14 at the mounting ring 114, such as... Figure 18 As shown, the user can block the flow hole 142 in the middle of the elastic cover 141 of the spherical cover 14 with their finger and press the elastic cover 141 of the spherical cover 14. The air inside the spherical cover 14 is quickly blown into the pipe of the booster pump 17 through the spray hole 192 and the water supply hole 115. Under the propulsion of the airflow, the pipe of the booster pump 17 can be cleared and repaired. The pipe of the booster pump 17 can be cleared and repaired without the user disassembling the parts, making the pipe clearing operation simple and convenient.

[0047] Therefore, in this embodiment, the portable coffee machine 10 can unclog and repair the pipes of the booster pump 17 without the user disassembling the parts, making the pipe unclogging operation simple and convenient, preventing coffee liquid from spraying out, reducing the user's cleaning burden, and quickly and completely blowing out the coffee powder in the powder cup 13 without the user having to shake or knock the powder cup 13 to remove the coffee powder stuck to the inner wall of the powder cup 13. This reduces the user's effort in pouring the coffee powder out of the powder cup 13 and also prevents the coffee powder from falling out in a scattered state, thus reducing the user's cleaning burden, improving the user experience, and increasing the fun of operation.

[0048] Moreover, the spherical cover 14 of the portable coffee machine 10 described above has a simple structure and is stable and reliable in operation.

[0049] In order to balance the elastic deformation capability and hardness profile capability of the spherical cover 14, the spherical cover 14 in this embodiment is made of 40-degree silicone.

[0050] Combination Figures 10 to 13 as well as Figure 15 In this embodiment, a coffee powder cup 13 includes a stainless steel cup 131 and a locking cup sleeve 132. The lower end face of the stainless steel cup 131 is provided with a plurality of liquid outlet holes 1312, and the stainless steel cup 131 is supported in the receiving hole 1323 of the locking cup sleeve 132 to insulate the stainless steel cup 131 from heat. Thus, when the coffee powder in the stainless steel cup 131 is extracted by high temperature and high pressure water, the deformation of the stainless steel cup 131 is very small, and the material of the stainless steel cup 131 is safe and healthy, thereby ensuring the safety of use. Specifically, the lower peripheral wall of the stainless steel cup 131 and the lower peripheral wall of the receiving sleeve hole 1323 have an insertion ring cavity 1324. The elastic collar 146 of the spherical cover 14 can be detachably inserted into the insertion ring cavity 1324 and sleeved on the lower peripheral wall of the stainless steel cup 131. The supporting end face 144 of the elastic cover body 141 of the spherical cover 14 can press against the lower end face of the locking cup sleeve 132, so that the spherical cover 14 is securely installed at the lower end of the powder cup 13.

[0051] Combination Figure 16In another embodiment, the lower peripheral wall of the stainless steel cup 131 of the powder cup 13 does not have an insertion annular cavity 1324 between the lower peripheral wall of the receiving sleeve hole 1323. As a result, the elastic collar 146 of the spherical cover 14 can be detachably pressed against the lower end surface of the stainless steel cup 131, and the supporting end face 144 of the elastic cover 141 can be pressed against the lower end surface of the locking cup sleeve 132. This causes the peripheral wall of the receiving sleeve hole 1323 of the locking cup sleeve 132 to abut against the outer peripheral surface of the elastic collar 146, thereby making the spherical cover 14 securely installed at the lower end of the powder cup 13.

[0052] To further improve the installation stability of the spherical cap 14 and the powder cup 13, a protruding ring 1325 is provided on the lower peripheral wall of the receiving hole 1323 of the locking cup sleeve 132. The protruding ring 1325 can press against the outer peripheral wall of the elastic collar 146. To further improve the smoothness of the installation and removal of the elastic collar 146 of the spherical cap 14, in this embodiment, the outer peripheral wall of the elastic collar 146 of the spherical cap 14 is inclined inward away from the guide peripheral surface 1461 of the elastic cap body 141.

[0053] To improve the stability of the fit between the stainless steel cup 131 and the locking cup sleeve 132, in this embodiment, the outer periphery of the upper open end of the stainless steel cup 131 is provided with an outward buckle 1311. The outward buckle 1311 is fastened to the upper ring wall of the locking cup sleeve 132. The cup 13 also includes an open retaining ring 133. The outer periphery of the stainless steel cup 131 is provided with a first annular groove 1313. The peripheral wall of the receiving hole 1323 is provided with a second annular groove 1322. The open retaining ring 133 is engaged in the first annular groove 1313, and the outer periphery of the open retaining ring 133 protrudes from the first annular groove 1313 and is embedded in the second annular groove 1322, thereby stably supporting the stainless steel cup 131 in the receiving hole 1323 of the locking cup sleeve 132.

[0054] Specifically, in this embodiment, the inner peripheral wall of the mounting ring 114 is provided with an internal thread 1141, and the upper outer peripheral wall of the locking cup sleeve 132 is provided with an external thread 1321. The external thread 1321 and the internal thread 1141 can be detachably connected, so that the upper end of the stainless steel cup 131 abuts against the lower end face of the housing 11, thereby realizing the detachable connection between the powder cup 13 and the mounting ring 114 of the housing 11.

[0055] Furthermore, in this embodiment, the outer periphery of the supporting end face 144 of the spherical cover 14 is recessed with an arc-shaped annular groove 145, and the supporting end face 144 can be detachably inserted into the upper opening of the water cup 15 and abut against the inner peripheral wall of the upper opening of the water cup 15. The arc-shaped annular groove 145 provides the supporting end face 144 of the spherical cover 14 with excellent elastic deformation capability, thereby enabling the supporting end face 144 of the spherical cover 14 to be inserted into the upper opening of the water cup 15 and to firmly abut against the inner peripheral wall of the upper opening of the water cup 15, thereby improving the stability and reliability of the pipeline unblocking and repair operation of the booster pump 17.

[0056] In order to increase the pressure and speed of the air outlet, in this embodiment, a cross rib 143 is provided in the flow hole 142 in the middle of the elastic cover 141 of the spherical cover 14 to divide the large-diameter flow hole 142 into four small-diameter holes, thereby enabling the airflow through the small-diameter holes to have a pressurization and speed-up effect.

[0057] Combination Figure 4 and Figure 6 In this embodiment, the cup lid 12 includes an outer lid 121, an inner lid 122, and a sealing ring 123. The inner lid 122 is disposed inside the outer lid 121 and forms a venting cavity 124 between it and the inner side of the outer lid 121. A through hole 1221 is provided in the middle of the inner lid 122. A positioning post 1211 protrudes from the inner side of the outer lid 121. The positioning post 1211 is inserted into the through hole 1221 and forms an air outlet gap between it and the peripheral wall of the through hole 1221. Furthermore, the outer lid 121 has multiple air outlet holes 12. 12. Multiple air vents 1212 are evenly arranged around the positioning post 1211, and a limiting ring groove 1213 is opened on the outer periphery of the outer cover 121. The sealing ring 123 includes a first elastic ring segment 1231 and a second elastic ring segment 1232 connected in an L-shape. The first elastic ring segment 1231 is embedded in the limiting ring groove 1213, and the second elastic ring segment 1232 protrudes from the limiting ring groove 1213 and can press against the inner peripheral wall of the upper opening of the water cup 15, so that the cup cover 12 seals and covers the upper opening of the water cup 15.

[0058] Therefore, in this embodiment, during the coffee extraction process, the portable coffee machine 10 controls the heating element 16 to heat the water in the cup 15, causing the high-temperature water pressure in the cup 15 to increase. Since an air vent gap is formed between the positioning post 1211 of the outer cover 121 and the peripheral wall of the through hole 1221 of the inner cover 122, the high-temperature water pressure in the cup 15 is released from the air vent gap into the ventilation cavity 124 formed between the inner side of the inner cover 122 and the outer cover 121, and discharged from the multiple air vents 1212 of the outer cover 121. This is to prevent the cup lid 12 from being blown off the upper opening of the cup 15 due to excessively high high-temperature water pressure, thus avoiding the phenomenon of high-temperature water splashing out of the cup 15.

[0059] Combination Figures 7 to 9In this embodiment, a support ring plate 151 is provided on the outer periphery of the water cup 15, and a support plate 116 and a buckle 117 are provided inside the housing 11. The protruding buckle portion 1171 of the buckle 117 is located above the support plate 116 and forms an installation groove 1172 between it and the support plate 116. The support ring plate 151 is located in the installation groove 1172, thereby firmly supporting the water cup 15 inside the housing 11. Specifically, in this embodiment, the support ring plate 151 on the water cup 15 has an avoidance groove 152. When installing the water cup 15, first align the avoidance groove 152 of the support ring plate 151 on the water cup 15 with the protruding buckle 1171 of the buckle 117, then place the support ring plate 151 on the support plate 116, and then rotate the water cup 15 so that the support ring plate 151 on the water cup 15 is located in the installation groove 1172 formed between the protruding buckle 1171 of the buckle 117 and the support plate 116. The installation process is simple and convenient.

[0060] In this embodiment, the portable coffee machine 10 also includes a circuit board 18, which is located inside the housing 11 and electrically connected to the heating element 16 and the booster pump 17. Specifically, the circuit board 18 is provided with a push-button switch 182, and the peripheral surface of the housing 11 is provided with a touch panel 111 corresponding to the push-button switch 182, so that the user can press the touch panel 111 to activate the push-button switch 182 on the circuit board 18 to control the portable coffee machine 10, thereby improving the convenience of intelligent control for the user.

[0061] Furthermore, in this embodiment, a light-emitting element 183 is provided on the circuit board 18, and a light guide strip 112 corresponding to the light-emitting element 183 is provided on the peripheral surface of the housing 11, so that the working status of the portable coffee machine 10 can be quickly identified by the bright color displayed by the light guide strip 112.

[0062] Furthermore, the portable coffee machine 10 in this embodiment also includes a battery 184 and an elastic seal 113. The battery 184 is located inside the housing 11 and is electrically connected to the circuit board 18. A charging head 181 is provided on the circuit board 18. A through-hole groove 118 corresponding to the charging head 181 is opened through the peripheral surface of the housing 11, and a mounting hole 119 is opened through the peripheral surface of the housing 11. A limiting groove 120 is opened on the outer peripheral surface of the housing 11, corresponding to the through-hole groove 118 and the mounting hole 119. The elastic seal 113 can be inserted into the limiting groove 120 with an interference fit. An elastic connecting rod 1132 is provided on the inner side of the first end of the elastic seal 113. The elastic connecting rod 1132 is adapted to be connected to the mounting hole 119. A gripping plate 1131 is provided on the second end of the elastic seal 113. Therefore, when the battery 184 needs to be charged, the user grabs the gripping plate 1131 of the elastic seal 113 and pulls the elastic seal 113 out of the limiting groove 120. Because the elastic connecting rod 1132 of the elastic seal 113 is adapted to the mounting hole 119 of the housing 11, the elastic seal 113 hangs on the housing 11. After charging is completed, the elastic seal 113 is inserted into the limiting groove 120 with an interference fit to seal the charging head 181 and prevent the charging head 181 from being contaminated and affecting the charging performance.

[0063] The above embodiments are merely preferred examples of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles of this utility model patent application should be included within the scope of this utility model patent application.

Claims

1. A portable coffee machine, comprising a housing, a lid, a water cup, a heating element, a booster pump, a spray nozzle, and a coffee powder container, wherein the water cup is located inside the upper part of the housing, the lid is detachably fitted over the upper opening of the water cup, the heating element is disposed on the water cup, the booster pump is disposed inside the housing and its inlet pipe is connected to the water cup, and its outlet pipe is connected to a water supply hole on the lower end face of the housing, the spray nozzle is disposed at the lower end of the housing and forms a liquid storage chamber therebetween with the lower end face of the housing, and the spray nozzle has multiple spray holes, a mounting ring protrudes from the lower end of the housing, the coffee powder container is detachably connected to the mounting ring, and the lower end face of the coffee powder container has multiple liquid outlet holes, characterized in that: The portable coffee machine also includes a spherical lid, which comprises an elastic lid body and an elastic collar. The elastic lid body is curved in a spherical arc and has a flow hole in the middle. The elastic collar protrudes from the supporting end face of the elastic lid body. The outer circumference of the elastic collar is smaller than the outer circumference of the supporting end face, and the inner ring hole of the elastic collar communicates with the inner cavity of the elastic lid body. The elastic collar is detachably fitted onto the lower end of the powder cup, detachably covers the upper opening of the water cup, and detachably fits onto the mounting ring.

2. The portable coffee machine according to claim 1, characterized in that: The powder cup includes a stainless steel cup and a locking cup sleeve. The lower end face of the stainless steel cup is provided with a plurality of liquid outlet holes, and the stainless steel cup is supported in the receiving hole of the locking cup sleeve to insulate the stainless steel cup from heat. The lower peripheral wall of the stainless steel cup and the lower peripheral wall of the receiving sleeve hole have an insertion ring cavity. The elastic collar can be detachably inserted into the insertion ring cavity and sleeved on the lower peripheral wall of the stainless steel cup. The supporting end face of the elastic cover can press against the lower end face of the locking cup sleeve. Alternatively, the elastic collar can be detachably pressed against the lower end face of the stainless steel cup, and the supporting end face of the elastic cover can be pressed against the lower end face of the locking cup sleeve, so that the peripheral wall of the receiving hole abuts against the outer peripheral surface of the elastic collar.

3. The portable coffee machine according to claim 2, characterized in that: A protruding ring is provided on the lower peripheral wall of the receiving sleeve hole, and the protruding ring can press against the outer peripheral wall of the elastic sleeve. And / or, the outer peripheral wall of the elastic collar is inclined inwards away from the guide peripheral surface of the elastic cover.

4. The portable coffee machine according to claim 2, characterized in that: The upper open portion of the stainless steel cup is provided with an outward-folding buckle, which fastens to the upper ring wall of the locking cup sleeve. The powder cup also includes an open retaining ring. The outer periphery of the stainless steel cup is provided with a first annular groove, and the peripheral wall of the receiving sleeve hole is provided with a second annular groove. The open retaining ring is engaged in the first annular groove, and the outer periphery of the open retaining ring protrudes from the first annular groove and is embedded in the second annular groove.

5. The portable coffee machine according to claim 2, characterized in that: The inner circumferential wall of the mounting ring is provided with an internal thread, and the upper outer circumferential wall of the locking cup sleeve is provided with an external thread. The external thread and the internal thread can be detachably connected, so that the upper end of the stainless steel cup abuts against the lower end surface of the housing.

6. The portable coffee machine according to claim 1, characterized in that: The outer periphery of the support end face is recessed with an arc-shaped groove, and the support end face can be detachably inserted into the upper opening of the water cup and abut against the inner peripheral wall of the upper opening of the water cup. And / or, the flow hole is provided with a cross-shaped rib.

7. The portable coffee machine according to claim 1, characterized in that: The cup lid includes an outer lid, an inner lid, and a sealing ring. The inner lid is disposed inside the outer lid and forms a venting cavity with the inner side of the outer lid. A through hole is provided in the middle of the inner lid. A positioning post is provided protruding from the inner side of the outer lid. The positioning post is inserted into the through hole and forms an air outlet gap with the peripheral wall of the through hole. The outer cover has multiple air vents, which are evenly arranged around the positioning post. The outer cover has a limiting ring groove on its outer periphery. The sealing ring includes a first elastic ring segment and a second elastic ring segment connected in an L-shape. The first elastic ring segment is embedded in the limiting ring groove, and the second elastic ring segment protrudes from the limiting ring groove and can press against the inner peripheral wall of the upper opening of the water cup.

8. The portable coffee machine according to claim 1, characterized in that: The water cup is provided with a support ring plate on its outer periphery, and a support plate and a buckle are provided inside the housing. The protruding part of the buckle is located above the support plate and forms an installation groove with the support plate. The support ring plate is located in the installation groove.

9. The portable coffee machine according to any one of claims 1 to 8, characterized in that: The portable coffee machine also includes a circuit board located inside the housing and electrically connected to the heating element and the booster pump, respectively. The circuit board is provided with a push button switch, and the peripheral surface of the casing is provided with a touch panel corresponding to the push button switch; And / or, the circuit board is provided with a light-emitting element, and the peripheral surface of the housing is provided with a light guide strip corresponding to the light-emitting element; And / or, the portable coffee machine further includes a battery and an elastic seal. The battery is located inside the housing and electrically connected to the circuit board. A charging head is provided on the circuit board. A through-hole groove corresponding to the charging head is formed through the circumferential surface of the housing, and a mounting hole is formed through the circumferential surface of the housing. A limiting groove is formed on the outer circumferential surface of the housing corresponding to the through-hole groove and the mounting hole. The elastic seal can be interference-fitted into the limiting groove. An elastic connecting rod is provided protruding from the inner side of the first end of the elastic seal. The elastic connecting rod is adapted to the mounting hole. A gripping plate is provided protruding from the second end of the elastic seal.

10. A spherical cap, characterized in that, Includes a resilient cap and a resilient collar; The elastic cover is curved in the shape of a spherical arc, and a flow hole is provided in the middle of the elastic cover. The elastic collar is provided on the supporting end face of the elastic cover. The outer circumference of the elastic collar is smaller than the outer circumference of the supporting end face, and the inner ring hole of the elastic collar is connected to the inner cavity of the elastic cover. The spherical cap is the spherical cap used in any one of the portable coffee machines described in claims 1 to 9.

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