Portable coffee machine

Abstract

The utility model relates to a portable coffee machine. The portable coffee machine comprises a shell assembly, a water tank, a water pump, an extraction assembly and a pressure detection piece. The shell assembly is provided with a first through hole, and the water tank is installed in the shell assembly. The water pump is installed in the shell assembly, the water pump is provided with a water inlet end and a water outlet end, and the water tank is communicated with the water inlet end of the water pump; the extraction assembly is mounted in the shell assembly, and the extraction assembly is communicated with the water outlet end of the water pump; the pressure detection part is clamped in the first through hole, the pressure detection part is provided with a detection end, the detection end is communicated with the extraction assembly, and the pressure detection part is used for detecting and displaying the pressure in the extraction assembly. According to the portable coffee machine, the pressure in the extraction cavity is detected through the detection end, so that the pressure in the extraction cavity is displayed through the pressure detection, a user can conveniently know the pressure in the extraction cavity, and then the user can conveniently adjust coffee extraction conditions according to self requirements.

Description

Technical Field

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

[0002] The flavor of coffee is related to the extraction pressure. In related technologies, portable coffee machines only have a power switch and an indicator light on the machine body, but no function to display the extraction pressure. This makes it impossible for users to know the pressure during coffee extraction. Therefore, when the flavor of the extracted coffee does not meet the user's expectations, the user can only adjust it by feeling. Utility Model Content

[0003] The main objective of this invention is to provide a portable coffee machine that solves the technical problem in the prior art where users cannot know the extraction pressure of the portable coffee machine.

[0004] To achieve the above objectives, this utility model provides a portable coffee machine, comprising a housing assembly, a water tank, a water pump, an extraction assembly, and a pressure detection element; the housing assembly has a first through hole; the water tank is installed inside the housing assembly; the water pump is installed inside the housing assembly, the water pump having an inlet end and an outlet end, and the water tank is connected to the inlet end of the water pump; the extraction assembly is installed inside the housing assembly, and the extraction assembly is connected to the outlet end of the water pump; the pressure detection element is snapped into the first through hole, the pressure detection element having a detection end, the detection end being connected to the extraction assembly, and the pressure detection element being used to detect and display the pressure inside the extraction assembly.

[0005] Optionally, the housing assembly includes a main housing and a bracket disposed within the main housing. The main housing has a mounting portion with a first through hole. The water tank is fixed to the bracket, the water pump is fixed to the bracket, the extraction chamber is fixed to the end of the main housing opposite to the water tank, and the pressure detection element is snapped into the main housing or the bracket.

[0006] Optionally, the mounting part has a slot communicating with the first through hole at one end facing the main housing, and the pressure detection element has a buckle at one end facing the main housing, the buckle engaging with the slot.

[0007] Optionally, the portable coffee machine also includes a decorative cover that covers the pressure sensor.

[0008] Optionally, a sealing ring is provided between the pressure sensing element and the first through hole.

[0009] Optionally, the pressure sensing element has a countersunk hole at one end facing the main housing, and one end of the buckle is movably connected to the countersunk hole, with a spring connected to the buckle inside the countersunk hole.

[0010] In addition, to achieve the above objectives, this utility model also provides another portable coffee machine, which includes a housing assembly, a water tank, a water pump, an extraction assembly, and a pressure detection device; the housing assembly includes an adapter with an adapter hole; the water tank is installed inside the housing assembly; the water pump is installed inside the housing assembly and has an inlet and an outlet, and the water tank is connected to the inlet of the water pump; the extraction assembly is installed inside the housing assembly and is connected to the outlet of the water pump; the pressure detection device has a detection end connected to the adapter hole, the adapter is connected to the extraction chamber, and the pressure detection device is used to detect and display the pressure inside the extraction chamber.

[0011] Optionally, the housing assembly is provided with a control button, and the portable coffee machine further includes a control button. The housing assembly is provided with a button hole, the control button is mounted in the button hole, and the pressure detection element has a display section, the axis of which is parallel to the axis of the button hole.

[0012] Optionally, the axis of the adapter hole is perpendicular to the axis of the display unit, and the axis of the adapter hole is perpendicular to the axis of the button hole.

[0013] Optionally, the extraction assembly includes an extraction bottom cover, an extraction top cover, and an extraction chamber. The extraction top cover is connected to the housing assembly, the extraction chamber is installed on the extraction bottom cover, and the extraction bottom cover and the extraction top cover are detachably connected.

[0014] In this invention, the pressure inside the extraction chamber is detected by a detection end, allowing the pressure sensor to display the pressure within the chamber. This enables the user to easily monitor the pressure and adjust the coffee extraction conditions according to their needs. Simultaneously, the pressure sensor is fixed to the first through hole by engaging with it, thus completing the installation of the pressure sensor. Alternatively, an adapter hole can be provided in the housing assembly, allowing the pressure sensor to connect to the adapter hole via the detection end, thereby completing the installation of the pressure sensor. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a portable coffee machine according to an embodiment of the present invention;

[0016] Figure 2 This is an exploded view of a portable coffee machine according to an embodiment of the present invention;

[0017] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is an exploded view of a portable coffee machine according to another embodiment of the present invention. Detailed Implementation

[0019] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] like Figures 1-3 As shown, this utility model embodiment provides a portable coffee machine 100, which includes a housing assembly 10, a water tank 20, a water pump 30, an extraction assembly 40, and a pressure detection element 50. The housing assembly 10 has a first through hole 112. The water tank 20 is installed inside the housing assembly 10. The water pump 30 is installed inside the housing assembly 10 and has an inlet end and an outlet end. The water tank 20 is connected to the inlet end of the water pump 30. The extraction assembly 40 is installed inside the housing assembly 10 and is connected to the outlet end of the water pump 30. The pressure detection element 50 is snapped into the first through hole 112 and has a detection end 51. The detection end 51 is connected to the extraction assembly 40, and the pressure detection element 50 is used to detect and display the pressure inside the extraction assembly 40.

[0021] In this embodiment, the housing assembly 10 houses and supports the water tank 20, water pump 30, extraction assembly 40, and pressure detection element 50. The water tank 20 stores the water required for coffee extraction. The water tank 20 is connected to the inlet of the water pump 30 via a pipe (not shown), and the water pump 30 delivers the water stored in the water tank 20 to the extraction assembly 40. The extraction assembly 40 is connected to the outlet of the water pump 30 via a pipe (not shown), and the extraction assembly 40 contains coffee powder or coffee capsules and is the extraction site for coffee liquid. The extraction assembly 40 has an outlet for the coffee liquid to flow out. When the pressure detection element 50 is installed in the first through hole 112, the detection end 51 of the pressure detection element 50 is located inside the housing assembly 10 and connected to the extraction assembly 40 via a pipe (not shown). The pressure display portion of the pressure detection element 50 is located outside the housing assembly 10. The pressure detection element 50 can display the pressure inside the extraction assembly 40 via a pointer or digital display.

[0022] It should be noted that coffee extraction is related to the speed at which water flows through the coffee grounds. This speed is influenced by factors such as the coarseness of the coffee grounds, the density of the coffee powder, and the water volume in the water tank. The pressure within the extraction unit 40 reflects these factors. For example, if the coffee grounds are too coarse, the water will flow through them too quickly during extraction, resulting in under-extraction. In this case, the pressure within the extraction unit 40 will be too low. Conversely, if the coffee grounds are too fine, the water will flow through the coffee machine too slowly during extraction, resulting in over-extraction. In this case, the pressure within the extraction unit 40 will be too high.

[0023] In this embodiment, the pressure inside the extraction chamber is detected by the detection end 51 so that the pressure detection displays the pressure inside the extraction chamber, thereby making it easier for the user to know the pressure inside the extraction chamber and thus making it easier for the user to adjust the grind of the coffee powder according to their own needs.

[0024] In this embodiment, during the installation of the pressure detection element 50, when the pressure detection element 50 is inserted into the first through hole 112, the pressure detection element 50 is fixed in the first through hole 112 by engaging with the first through hole 112, thereby completing the installation of the pressure detection element 50.

[0025] like Figures 2-3 As shown, in one embodiment, the housing assembly 10 includes a main housing 11 and a bracket 12 disposed within the main housing 11. The main housing 11 is provided with a mounting portion 111, and the mounting portion 111 is provided with a first through hole 112. The water tank 20 is fixed to the bracket 12, the water pump 30 is fixed to the bracket 12, the extraction chamber 43 is fixed to the end of the main housing 11 opposite to the water tank 20, and the pressure detection element 50 is snapped into the main housing 11 or the bracket 12.

[0026] In this embodiment, both the main housing 11 and the mounting portion 111 are cylindrical. The first through hole 112 extends along the axial direction of the mounting portion 111 to pass through the opposite ends of the mounting portion 111. The axial direction of the first through hole 112 is perpendicular to the axial direction of the main housing 11.

[0027] In this embodiment, the housing assembly 10 further includes a top cover 13 and a cup lid 14. The cup lid 14 is detachably installed at the end of the main housing 11 where the extraction assembly 40 is installed, and the cup lid 14 can be used to collect the coffee liquid flowing out of the extraction assembly 40. The top cover 13 is detachably installed at the end of the main housing 11 where the water tank 20 is installed, and the top cover 13 covers the water inlet of the water tank 20. When water needs to be added to the portable coffee machine 100, the top cover 13 is opened to fill the water inlet of the water tank 20. After filling, the top cover 13 is installed back onto the main housing 11.

[0028] In this embodiment, the portable coffee machine 100 also includes a circuit board 61 and a battery 62. The circuit board 61 is provided with electronic components and circuits required to perform the coffee extraction function, and the battery 62 is used to supply power to the circuit board 61, the water pump 30, and the pressure detection device 50. The bracket 12 includes an upper frame 121 and a lower frame 122 connected together. The water tank 20 is installed on the side of the upper frame 121 away from the lower frame 122. The water pump 30, the circuit board 61, and the battery 62 are all installed between the upper frame 121 and the lower frame 122. The upper frame 121 and the lower frame 122 are connected to fix the water pump 30, the circuit board 61, and the battery 62.

[0029] like Figures 2-3 As shown, in one embodiment, the mounting part 111 is provided with a slot 113 communicating with the first through hole 112 at one end facing the inside of the main housing 11, and the pressure detection element 50 is provided with a buckle 52 at one end facing the inside of the main housing 11, and the buckle 52 engages with the slot 113.

[0030] In this embodiment, the slot 113 extends radially along the first through hole 112, and the buckle 52 extends radially along the first through hole 112. The slot 113 and the buckle 52 are connected to fix the pressure detection element 50 in the first through hole 112. There are two slots 113, and the included angle between the two slots 113 is 180°. There are also two buckles 52, and the included angle between the two buckles 52 is 180°, so as to evenly distribute the weight of the pressure detection element 50.

[0031] like Figure 2 As shown, in one embodiment, the portable coffee machine 100 further includes a decorative cover 64 that covers the pressure detection element 50.

[0032] In this embodiment, the end of the decorative cover 64 facing the main housing 11 abuts against the outer wall of the main housing 11, and the end of the decorative cover 64 facing the main housing 11 is adapted to the outer wall of the main housing 11 to cover the portion of the mounting part 111 located outside the main housing 11 and the portion of the pressure detection element 50 exposed outside the main housing 11, thereby improving the aesthetics of the coffee machine. It should be noted that the end of the decorative cover 64 facing away from the main housing 11 has a window to expose the part of the pressure detection element 50 that displays the pressure inside the extraction assembly 40, and does not completely cover the pressure detection element 50.

[0033] like Figures 2-3 As shown, in one embodiment, a sealing ring 63 is provided between the pressure detection element 50 and the first through hole 112.

[0034] In this embodiment, the inner ring wall of the sealing ring 63 abuts against the outer peripheral wall of the pressure detection element 50, and the outer ring wall of the sealing ring 63 abuts against the hole wall of the first through hole 112, so as to prevent liquid from entering the housing assembly 10 through the first through hole 112 and damaging the electronic components inside the housing assembly 10.

[0035] like Figures 2-3 As shown, in one embodiment, the pressure sensing element 50 has a countersunk hole (not shown) at one end facing the main housing 11, and one end of the buckle 52 is movably connected to the countersunk hole. A spring (not shown) connected to the buckle 52 is provided in the countersunk hole.

[0036] In this embodiment, a spring is provided to allow the buckle 52 to extend and retract relative to the pressure detection element 50. When the pressure detection element 50 enters the first through hole 112, the buckle 52 is pushed into the countersunk hole by the hole wall of the first through hole 112. When the buckle 52 moves to the slot 113, the force exerted by the hole wall of the first through hole 112 on the buckle 52 disappears, and the buckle 52 is ejected by the spring and engages with the slot 113, thereby reducing the difficulty of inserting the pressure detection element 50 into the first through hole 112.

[0037] like Figure 2 As shown, in one embodiment, the extraction assembly 40 includes an extraction bottom cover 41, an extraction top cover 42, and an extraction chamber 43. The extraction top cover 42 is connected to the housing assembly 10, and the extraction chamber 43 is installed on the extraction bottom cover 41. The extraction bottom cover 41 and the extraction top cover 42 are detachably connected.

[0038] In this embodiment, the extraction cover 42 is fixed to the housing assembly 10. The extraction bottom cover 41 and the extraction top cover 42 are connected by threads to realize the disassembly and assembly of the extraction bottom cover 41 and the extraction top cover 42. When coffee needs to be extracted, the extraction bottom cover 41 is unscrewed, coffee powder or coffee capsules are put into the extraction chamber 43, and then the chamber body is installed onto the extraction top cover 42.

[0039] In this embodiment, the extraction assembly 40 is equipped with an exhaust valve (not shown in the figure). The exhaust valve can be located on the bottom cover 41 or the top cover 42 of the extraction assembly. The exhaust valve is a one-way valve, which only allows gas inside the extraction assembly 40 to be discharged and does not allow gas outside the extraction assembly 40 to enter. When the pressure inside the extraction assembly 40 reaches a certain value, the gas inside the extraction assembly 40 will push open the valve plate of the exhaust valve and be discharged outwards until the pressure inside the extraction assembly 40 is insufficient to push open the valve plate of the exhaust valve, at which point the valve plate will automatically close, thereby preventing damage to the extraction assembly 40 due to excessive pressure.

[0040] like Figure 2As shown, in one embodiment, the housing assembly 10 includes a main housing 11 and a bracket 12 disposed within the main housing 11. The main housing 11 is provided with a first through hole 112. The water tank 20 is fixed to the bracket 12. The water pump 30 is fixed to the bracket 12. The extraction assembly 40 is fixed to one end of the main housing 11 away from the water tank 20. The fixing member is connected to the main housing 11 or the bracket 12 to fix the pressure detection element 50 to the first through hole 112.

[0041] In this embodiment, the housing assembly 10 further includes a top cover 13 and a cup lid 14. The cup lid 14 is detachably installed at the end of the main housing 11 where the extraction assembly 40 is installed, and the cup lid 14 can be used to collect the coffee liquid flowing out of the extraction assembly 40. The top cover 13 is detachably installed at the end of the main housing 11 where the water tank 20 is installed, and the top cover 13 covers the water inlet of the water tank 20. When water needs to be added to the portable coffee machine 100, the top cover 13 is opened to fill the water inlet of the water tank 20. After filling, the top cover 13 is installed back onto the main housing 11.

[0042] In this embodiment, the portable coffee machine 100 also includes a circuit board 61 and a battery 62. The circuit board 61 is provided with electronic components and circuits required to perform the coffee extraction function, and the battery 62 is used to supply power to the circuit board 61, the water pump 30, and the pressure detection device 50. The bracket 12 includes an upper frame 121 and a lower frame 122 connected together. The water tank 20 is installed on the side of the upper frame 121 away from the lower frame 122. The water pump 30, the circuit board 61, and the battery 62 are all installed between the upper frame 121 and the lower frame 122. The upper frame 121 and the lower frame 122 are connected to fix the water pump 30, the circuit board 61, and the battery 62.

[0043] In addition, such as Figure 4 As shown in the figure, this utility model embodiment also provides another portable coffee machine 100. The following description only describes the contents that are different from the portable coffee machine 100 in the above embodiment. The portable coffee machine 100 includes a housing assembly 10, a water tank 20, a water pump 30, an extraction assembly 40, and a pressure detection element 50. The housing assembly 10 includes an adapter with an adapter hole 114. The water tank 20 is installed inside the housing assembly 10. The water pump 30 is installed inside the housing assembly 10 and has an inlet end and an outlet end. The water tank 20 is connected to the inlet end of the water pump 30. The extraction assembly 40 is installed inside the housing assembly 10 and is connected to the outlet end of the water pump 30. The pressure detection element 50 has a detection end 51 connected to the adapter hole 114. The adapter is connected to the extraction chamber 43. The pressure detection element 50 is used to detect and display the pressure inside the extraction chamber 43.

[0044] In this embodiment, the main housing 11 has an opening corresponding to the adapter hole 114. The detection end 51 protrudes from the pressure detection element 50 and has an external thread. The adapter hole 114 is a threaded hole. The detection end 51 passes through the opening of the main housing 11 and is threadedly connected to the adapter hole 114 to fix the pressure detection element 50 in the adapter hole 114. The adapter has a passage communicating with the adapter hole 114. The adapter is connected to a pipe through the internal passage to connect to the extraction assembly 40.

[0045] like Figure 4 As shown, in another embodiment, the housing assembly 10 is provided with a control button 65, and the portable coffee machine 100 further includes a control button 65. The housing assembly 10 is provided with a button hole 66, the control button 65 is mounted in the button hole 66, and the pressure detection element 50 has a display part 53, the axis of the display part 53 being parallel to the axis of the button hole 66.

[0046] In this embodiment, the control button 65 is used to control the coffee machine's on / off switch and adjust extraction parameters. The display section 53 of the pressure sensor 50 is used to display the pressure within the extraction assembly 40. The display section 53 displays the pressure within the assembly via pointers or numbers. The axis of the display section 53 is parallel to the axis of the button hole 66, meaning that the display section 53 and the control button 65 face the same direction, so that the user can observe pressure changes while operating the coffee machine.

[0047] like Figure 4 As shown, in another embodiment, the axis of the adapter hole 114 is perpendicular to the axis of the display unit 53, and the axis of the adapter hole 114 is perpendicular to the axis of the button hole 66.

[0048] In this embodiment, the display unit 53 is located on the front of the pressure detection unit 50, the axis of the adapter hole 114 is perpendicular to the axis of the display unit 53, that is, the detection end 51 is located on the side of the pressure detection unit 50, and the button hole 66 is located on the front of the main housing 11, that is, the adapter hole 114 is located on the side of the main housing 11, that is, the pressure detection unit 50 is located on the side of the main housing 11, which makes it convenient for the user to observe pressure changes while operating the coffee machine.

[0049] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A portable coffee maker characterized in that, The portable coffee machine comprises: a shell assembly provided with a first through hole; a water tank installed in the shell assembly; a water pump installed in the shell assembly, the water pump having a water inlet end and a water outlet end, the water tank being in communication with the water inlet end of the water pump; an extraction assembly installed in the shell assembly, the extraction assembly being in communication with the water outlet end of the water pump; and a pressure detection member clamped in the first through hole, the pressure detection member having a detection end in communication with the extraction assembly, the pressure detection member being used for detecting and displaying the pressure in the extraction assembly.

2. The portable coffee maker of claim 1, wherein, The shell assembly comprises a main shell and a support arranged in the main shell, the main shell being provided with a mounting portion, the mounting portion being provided with the first through hole, the water tank being fixed to the support, the water pump being fixed to the support, the extraction assembly being fixed to one end of the main shell away from the water tank, and the pressure detection member being clamped with the main shell or the support.

3. The portable coffee maker of claim 2, wherein, The mounting portion is provided with a clamping groove in communication with the first through hole at one end of the main shell, and the pressure detection member is provided with a clamping buckle at one end of the main shell, the clamping buckle being clamped with the clamping groove.

4. The portable coffee maker of claim 3, wherein, The portable coffee machine further comprises a decorative cover arranged on the pressure detection member.

5. The portable coffee maker of claim 3, wherein, A sealing ring is arranged between the pressure detection member and the first through hole.

6. The portable coffee maker of claim 3, wherein, The pressure detection member is provided with a counterbore at one end of the main shell, one end of the clamping buckle being movably connected to the counterbore, and a spring connected with the clamping buckle is arranged in the counterbore.

7. A portable coffee maker characterized in that, The portable coffee machine comprises: a shell assembly comprising an adapter provided with an adapter hole; a water tank installed in the shell assembly; a water pump installed in the shell assembly, the water pump having a water inlet end and a water outlet end, the water tank being in communication with the water inlet end of the water pump; an extraction assembly installed in the shell assembly, the extraction assembly being in communication with the water outlet end of the water pump; and a pressure detection member provided with a detection end, the detection end being connected to the adapter hole, the adapter being in communication with the extraction assembly, the pressure detection member being used for detecting and displaying the pressure in the extraction assembly.

8. The portable coffee maker of claim 7, wherein, The portable coffee machine further comprises a control button, the shell assembly being provided with a button hole, the control button being installed in the button hole, the pressure detection member having a display portion, and an axis of the display portion being parallel to an axis of the button hole.

9. The portable coffee maker of claim 8, wherein, An axis of the adapter hole is perpendicular to an axis of the display portion, and an axis of the adapter hole is perpendicular to an axis of the button hole.

10. The portable coffee maker according to any one of claims 1-9, characterized in that The extraction assembly comprises an extraction bottom cover, an extraction upper cover and an extraction bin, the extraction upper cover being connected with the shell assembly, the extraction bin being installed in the extraction bottom cover, and the extraction bottom cover being detachably connected with the extraction upper cover.

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