Portable coffee machine

Abstract

The utility model relates to a portable coffee machine which comprises a shell assembly, a water tank, a water pump, an extraction assembly, a pressure detection piece and a fixing piece, and the shell assembly is provided with a first through hole; the water tank is installed in the shell assembly. The water pump is installed in the shell assembly and provided with a water inlet end and a water outlet end, and the water tank communicates 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 piece is mounted in the first through hole, the pressure detection piece is provided with a detection end, the detection end is communicated with the extraction assembly, and the pressure detection piece is used for detecting and displaying pressure in the extraction assembly; the fixing member is connected with the pressure detection member and the housing assembly so as to fix the pressure detection member in the first through hole. 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, a pressure detection element, and a fixing 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 installed in 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; the fixing element is connected to the pressure detection element and the housing assembly to fix the pressure detection element in the first through hole.

[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, and the extraction assembly is fixed to the end of the main housing opposite to the water tank. The fixing member is connected to the main housing or the bracket to fix the pressure detection element to the first through hole.

[0006] Optionally, the mounting portion includes an external connecting portion located on the outside of the main housing. One end of the external connecting portion is provided with a first fixing hole. The end of the pressure sensing element facing away from the housing assembly protrudes to the side to form a first fixing portion. The first fixing portion is provided with a second through hole. The fixing element passes through the second through hole and is connected to the first fixing hole.

[0007] Optionally, the portable coffee machine also includes a decorative cover that covers the outside of the pressure sensing element and the first fixing part.

[0008] Optionally, the mounting part includes an inner connecting part disposed within the main housing, the inner connecting part having a third through hole on its side wall facing the water tank, the pressure detection element having a second fixing hole on its outer peripheral wall, and the fixing element passing through the second through hole and connecting to the second fixing hole.

[0009] Optionally, the fastener is threadedly connected to the second fixing hole.

[0010] Optionally, the fastener includes a connected support portion and a limiting portion, the support portion being fixedly connected to the inner connecting portion, and the limiting portion passing through the second through hole and being inserted into the second fixing hole.

[0011] Optionally, the second through hole is tapered in the direction from the support portion to the limiting portion, and the limiting portion is also tapered in the direction from the support portion to the limiting portion.

[0012] Optionally, a sealing ring is provided between the pressure sensing element and the first through 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 the technical solution of this utility model, the pressure inside the extraction chamber is detected by the detection end so that the pressure detection displays the pressure inside the extraction chamber, thereby making it easy for the user to know the pressure inside the extraction chamber and thus making it easy for the user to adjust the coffee extraction conditions according to their own needs. At the same time, after the pressure detection element is installed into the first through hole, the pressure detection element is fixed in the first through hole by the fixing element, thus completing the installation of the pressure detection element. 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;

[0019] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0020] Figure 6 This is an exploded view of a portable coffee machine according to another embodiment of the present invention;

[0021] Figure 7 yes Figure 6 A magnified view of point C in the middle. Detailed Implementation

[0022] 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.

[0023] like Figures 1-7 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, a pressure detection element 50, and a fixing element 60; 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 the water pump 30 has a water inlet end and a water outlet end, and the water tank 20 is connected to the water inlet end of the water pump 30; the extraction assembly 40 is installed in the housing. Within component 10, the extraction component 40 is connected to the outlet end of the water pump 30; a pressure detection element 50 is installed in the first through hole 112, the pressure detection element 50 has a detection end 51, the detection end 51 is connected to the extraction component 40, and the pressure detection element 50 is used to detect and display the pressure inside the extraction component 40; a fixing element 60 is connected to the pressure detection element 50, and the fixing element 60 is connected to the housing component 10 to fix the pressure detection element 50 in the first through hole 112.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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 and the housing assembly 10 are connected by the fixing element 60 to fix the pressure detection element 50 in the first through hole 112, thereby completing the installation of the pressure detection element 50. The fixing element 60 can be a screw or pin or other part with a fixing function.

[0028] 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 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 assembly 40 is fixed to the end of the main housing 11 opposite to the water tank 20, and the fixing member 60 is connected to the main housing 11 or the bracket 12 to fix the pressure detection member 50 to the first through hole 112.

[0029] 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.

[0030] 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.

[0031] In this embodiment, the portable coffee machine 100 also includes a circuit board 71 and a battery 72. The circuit board 71 is provided with electronic components and circuits required to perform the coffee extraction function, and the battery 72 is used to supply power to the circuit board 71, 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 71, and the battery 72 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 71, and the battery 72.

[0032] like Figures 2-3 As shown, in one embodiment, the mounting part 111 includes an external connecting part disposed on the outside of the main housing 11. One end of the external connecting part is provided with a first fixing hole 113. The pressure detection element 50 has a first fixing part 52 protruding to the side at one end away from the housing assembly 10. The first fixing part 52 is provided with a second through hole 521. The fixing element 60 passes through the second through hole 521 and is connected to the first fixing hole 113.

[0033] In this embodiment, there are two first fixing holes 113, and the included angle between the two first fixing holes 113 is 180°. There are also two first fixing parts 52, and the included angle between the two first fixing parts 52 is 180°, so as to evenly distribute the weight of the pressure detection element 50.

[0034] In this embodiment, the fixing member 60 is a screw, and the first fixing hole 113 is a threaded hole. The fixing member 60 passes through the second through hole 521 and is threadedly connected to the first fixing hole 113 to fix the pressure detection member 50 in the first through hole 112. In other embodiments, the first fixing hole 113 can be a through hole, and a threaded hole is provided on the bracket 12. The fixing member 60 passes through the first through hole 112 and the first fixing hole 113 and is threadedly connected to the threaded hole on the bracket 12 to fix the pressure detection member 50 in the first through hole 112.

[0035] like Figures 2-3 As shown, in one embodiment, the portable coffee machine 100 further includes a decorative cover 74, which covers the outside of the pressure detection element 50 and the first fixing part 52.

[0036] In this embodiment, the end of the decorative cover 74 facing the main housing 11 abuts against the outer wall of the main housing 11, and the end of the decorative cover 74 facing the main housing 11 is adapted to fit the outer wall of the main housing 11 to cover the outer connecting part, the first fixing part 52 and the fixing member 60, thereby improving the aesthetics of the coffee machine. The end of the decorative cover 74 facing away from the main housing 11 is provided with a window to expose the part of the pressure detection element 50 that displays the pressure inside the extraction assembly 40.

[0037] like Figures 4-7 As shown, in one embodiment, the mounting part 111 includes an inner connecting part disposed within the main housing 11. The inner connecting part has a third through hole 114 on its side wall facing the water tank 20. The pressure detection element 50 has a second fixing hole 53 on its outer peripheral wall. The fixing element 60 passes through the second through hole 521 and is connected to the second fixing hole 53.

[0038] In this embodiment, the main housing 11 has a through hole that passes through both opposite ends. One end of the main housing 11 is provided with a support plate. The lower frame 122 of the bracket 12 is placed on the support plate. The support plate supports the bracket 12 and other components located in the main housing 11. The third through hole 114 is located on the side wall of the inner connecting part facing the water tank 20. That is, the third through hole 114 is located on the side of the main housing 11 without the support plate, so as to facilitate the installation of the fixing member 60, thereby facilitating the installation of the pressure detection member 50 in the first through hole 112.

[0039] In other embodiments, the third through hole 114 may also be provided in the upper frame 121, and the fastener 60 passes through the third through hole 114 of the upper frame 121 and is connected to the second fixing hole 53 to fix the pressure detection element 50 in the first through hole 112.

[0040] like Figure 5 As shown, in one embodiment, the fastener 60 is threadedly connected to the second fixing hole 53.

[0041] In this embodiment, the fixing member 60 is a screw, the second fixing hole 53 is a threaded hole, the fixing member 60 passes through the third through hole 114 and is threadedly connected to the second fixing hole 53 to fix the pressure detection member 50 in the first through hole 112.

[0042] like Figure 7 As shown, in one embodiment, the fastener 60 includes a support portion 61 and a limiting portion 62 connected together. The support portion 61 is fixedly connected to the inner connecting portion, and the limiting portion 62 passes through the second through hole 521 and is inserted into the second fixing hole 53.

[0043] In this embodiment, the support part 61 is provided with a fourth through hole 611, and the inner connecting part is provided with a third fixing hole 115. The support part 61 is fixed to the inner connecting part by screws passing through the fourth through hole 611 and threadedly connecting to the third fixing hole 115, thereby fixing the fixing member 60 to the inner connecting part, and then fixing the pressure detection member 50 to the first through hole 112.

[0044] like Figure 7 As shown, in one embodiment, the second through hole 521 is tapered in the direction from the support portion 61 to the limiting portion 62, and the limiting portion 62 is tapered in the direction from the support portion 61 to the limiting portion 62.

[0045] In this embodiment, the second through hole 521 has a larger diameter at one end and a smaller diameter at the other end. The smaller diameter end of the second through hole 521 is connected to the first through hole 112. The limiting part 62 has a smaller width at one end and a larger width at the other end. The wider end of the limiting part 62 is connected to the support part 61. When installing the fastener 60, the narrower end of the limiting part 62 enters the second through hole 521 from the wider end of the second through hole 521 to guide the limiting part 62 into the second through hole 521, thereby facilitating the installation of the fastener 60.

[0046] like Figure 2 As shown, in one embodiment, a sealing ring 73 is provided between the pressure detection element 50 and the first through hole 112.

[0047] In this embodiment, the inner ring wall of the sealing ring 73 abuts against the outer peripheral wall of the pressure detection element 50, and the outer ring wall of the sealing ring 73 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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; a pressure detection member installed 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; and a fixing member connected with the pressure detection member, the fixing member being connected with the shell assembly to fix the pressure detection member in the first through hole. The shell assembly comprises a main shell and a support provided 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 fixing member being connected with the main shell or the support to fix the pressure detection member in the first through hole.

2. The portable coffee maker of claim 1, wherein, The mounting portion comprises an outer connecting portion provided on the outer side of the main shell, one end of the outer connecting portion being provided with a first fixing hole, one end of the pressure detection member away from the shell assembly being protruded to the side surface to form a first fixing portion, the first fixing portion being provided with a second through hole, and the fixing member penetrating through the second through hole and being connected with the first fixing hole.

3. The portable coffee maker of claim 2, wherein, The portable coffee machine further comprises a decorative cover covering the outer side of the pressure detection member and the first fixing portion.

4. The portable coffee maker of claim 3, wherein, The mounting portion comprises an inner connecting portion provided in the main shell, the inner connecting portion being provided with a third through hole on the side wall facing the water tank, the outer peripheral wall of the pressure detection member being provided with a second fixing hole, and the fixing member penetrating through the second through hole and being connected with the second fixing hole.

5. The portable coffee maker of claim 3, wherein, The fixing member is threadedly connected with the second fixing hole.

6. The portable coffee maker of claim 5, wherein, The fixing member comprises a support portion and a limiting portion connected with each other, the support portion being fixedly connected with the inner connecting portion, and the limiting portion penetrating through the second through hole and being inserted into the second fixing hole.

7. The portable coffee maker of claim 5, wherein, The second through hole is gradually tapered in the direction from the support portion to the limiting portion, and the limiting portion is gradually tapered in the direction from the support portion to the limiting portion.

8. The portable coffee maker of claim 7, wherein, A sealing ring is arranged between the pressure detection member and the first through hole.

9. The portable coffee maker according to any one of claims 1-8, characterized in that, The extraction assembly comprises an extraction bottom cover, an extraction upper cover and an extraction cartridge, the extraction upper cover being connected with the shell assembly, the extraction cartridge being installed in the extraction bottom cover, and the extraction bottom cover being detachably connected with the extraction upper cover.

10. The portable coffee maker according to any one of claims 1-8, characterized in that, ​

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