Small coffee machine

Abstract

The utility model provides a small coffee machine, which relates to the technical field of coffee machines, and is characterized in that the small coffee machine comprises an upper machine body and a lower machine body which are rotatably connected, the bottom of the upper machine body is provided with a first covering part, and the top of the lower machine body is provided with a second covering part; the positions of the first covering part and the second covering part correspond to each other and are used for covering each other; the second covering part is provided with a first mounting structure for mounting an external water tank, and a first through hole is formed in the first mounting structure and is communicated with the interior and the exterior of the lower machine body; the instant heating assembly is arranged in the lower machine body; the water pump is arranged in the lower machine body and connected with the instant heating assembly; and the extraction assembly is used for directly or indirectly receiving the water which is pumped by the water pump and comes from the external water tank for extracting coffee. The small coffee machine has the advantages of being small in occupied space and good in heating performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coffee machines, in particular to a small coffee machine. BACKGROUND

[0002] The small coffee machines on the market are mainly portable coffee machines, and the structure is usually that a water tank structure is arranged at the top of the main body of the coffee machine, and a coffee extraction cavity is arranged at the lower part of the main body of the coffee machine. Since the main purpose is portability, the volume needs to be small, therefore, the prior art scheme usually does not have a heating function, or can only achieve a small-power heat preservation function. In the actual use process, hot water or cold water needs to be added for extraction, and if the extraction temperature is low, the coffee extraction effect will be affected.

[0003] In addition, since the existing small coffee machines have small space, the space for a large water pump is insufficient and cannot be installed, and only a low-pressure water pump can be used, which cannot extract the oil in the coffee.

[0004] At the same time, the amount of extracted coffee is usually less than 100 ml, which cannot meet the needs of different users.

[0005] Therefore, the structure design of the existing small coffee machine still has many unreasonable places, and there is still a lot of room for improvement.

[0006] In view of the above problems, the present application provides a new solution. CONTENT OF THE INVENTION

[0007] The purpose of the present application is to provide a small coffee machine which has the advantages of small space occupation and good heating performance.

[0008] In a first aspect, the present application provides a small coffee machine, and the technical scheme is as follows:

[0009] It comprises:

[0010] The upper machine body and the lower machine body are rotationally connected, the bottom of the upper machine body is provided with a first covering part, the top of the lower machine body is provided with a second covering part, and the positions of the first covering part and the second covering part are used to cover each other;

[0011] The second covering part is provided with a first mounting structure for mounting an external water tank, and a first through hole is formed in the first mounting structure to communicate the inside and outside of the lower machine body;

[0012] The instant heating assembly is arranged in the lower machine body;

[0013] The water pump is arranged in the lower machine body and connected with the instant heating assembly;

[0014] The extraction assembly directly or indirectly receives the water pumped out from the external water tank by the water pump for extracting coffee.

[0015] By setting the upper body and the lower body in rotation connection, the upper body and the lower body can be relatively rotated, on this basis, the first covering part is arranged on the upper body, the second covering part is arranged on the lower body, so that they can cover each other, and the first mounting structure is arranged on the second covering part for mounting the external water tank, that is, the water tank can be arranged in the upper body and the lower body without being arranged inside, so that the space occupation can be greatly reduced, at the same time, through the mutual covering of the first covering part and the second covering part, dust and other sundries can be avoided from falling into the first mounting part, and dust and other sundries can also be avoided from falling into the inside of the lower body through the first through hole, which has a good safety protection effect, and since the water tank does not need to be arranged inside, more space can be used to arrange the instant heating assembly, so that the purpose of rapid heating is achieved, and temperature control is more conducive, so that coffee meeting the requirements can be extracted, therefore, the scheme provided by the application has the beneficial effects of small space occupation and good heating performance.

[0016] Further, in the application, the second covering part is arranged in a concave inward manner and forms an inner concave space, and the first mounting structure is arranged in the inner concave space and does not exceed the top end face of the lower body.

[0017] Further, in the application, a space is left between the first covering part and the second covering part, the extraction assembly is arranged in the first covering part, and the bottom of the extraction assembly is covered by the second covering part.

[0018] Further, in the application, the instant heating assembly is provided with a first water inlet and a first water outlet, and at least one temperature detection device is arranged, the water pump is provided with a second water inlet and a second water outlet, and the extraction assembly is provided with a third water inlet and a third water outlet.

[0019] Further, in the application, the first water inlet is connected with the first through hole, the second water inlet is connected with the first water outlet, and the third water inlet is connected with the second water outlet.

[0020] Further, in the application, the second water inlet is connected with the first through hole, the first water inlet is connected with the second water outlet, and the third water inlet is connected with the first water outlet.

[0021] Further, in the application, the upper body is provided with a first rotating assembly, the lower body is provided with a second rotating assembly, the first rotating assembly and the second rotating assembly are in rotation connection, and the first rotating assembly (120) or the second rotating assembly (250) is provided with a connecting hole communicating the upper body and the lower body, and a shaft sleeve assembly is further arranged between the first rotating assembly and the second rotating assembly.

[0022] The shaft sleeve assembly comprises a first shaft sleeve and a second shaft sleeve which are rotationally fitted with each other;

[0023] The first shaft sleeve is a vertical cylindrical structure, and a first step is arranged on the top of the first shaft sleeve in the horizontal direction, the first shaft sleeve is provided with a first through hole penetrating the bottom surface and the top surface, the first through hole is embedded on the second rotating assembly (250), and a first protrusion protruding from the outer surface of the first shaft sleeve is further arranged between the first step and the outer surface of the first shaft sleeve.

[0024] The second shaft sleeve is a vertical cylindrical structure, and a second step is arranged on the bottom of the second shaft sleeve in the horizontal direction, the second shaft sleeve is provided with a second through hole penetrating the bottom surface and the top surface, and the second through hole is used for rotationally fitting with the first shaft sleeve, the circumferential outer surface of the second shaft sleeve is embedded on the first rotating assembly (120), and a second protrusion protruding from the inner surface of the second shaft sleeve is arranged at the corresponding position of the second through hole.

[0025] The end of the first shaft sleeve away from the first step is in contact with the second protrusion, and the end of the second shaft sleeve away from the second step is in contact with the first protrusion.

[0026] Further, in the present application, the top of the first shaft sleeve is provided with a limiting structure protruding from the top surface, the first rotating assembly (120) is provided with a fixed clamping structure, the clamping structure is located above the top of the first shaft sleeve and does not exceed the limiting structure, and is used for being in contact with the limiting structure after the upper machine body is rotated to a specified position.

[0027] Further, in the present application, the outer circumferential surface of the first shaft sleeve is provided with an inwardly recessed positioning structure, the side surface of the clamping structure is provided with a circular arc part, the circular arc part is used for cooperating with the positioning structure, and the positioning structure is arranged on the outer surface of the first step.

[0028] Further, in the present application, the capacity of the extraction assembly is 30ml-160ml, and the extraction pressure is 3bar-20bar.

[0029] From the above, the small coffee machine provided by the application, by setting the rotationally connected upper body and lower body, the upper body and the lower body can be relatively rotated, on this basis, the first covering part is arranged on the upper body, the second covering part is arranged on the lower body, so that they can cover each other, and the first mounting structure is arranged on the second covering part for mounting the external water tank, that is, the water tank can be arranged inside the upper body and the lower body, so that the space occupation can be greatly reduced, at the same time, by the mutual covering of the first covering part and the second covering part, dust and other sundries can be avoided from falling into the first mounting part, and dust and other sundries can also be avoided from falling into the inside of the lower body through the first through hole, which has good safety protection effect, and since the water tank does not need to be arranged inside, more space can be used to arrange the instant heating assembly, so as to realize the purpose of rapid heating, and it is more conducive to temperature control, so that the coffee extracted meets the requirements, therefore, the scheme provided by the application has the beneficial effects of small space occupation and good heating performance. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 A small coffee machine provided by the application is shown in the sectional view.

[0031] Figure 2 A small coffee machine provided by the application is shown in the sectional view.

[0032] Figure 3 A small coffee machine provided by the application is shown in the sectional view.

[0033] Figure 4 A small coffee machine provided by the application is shown in the sectional view.

[0034] Figure 5 A small coffee machine provided by the application is shown in the sectional view.

[0035] Figure 6 A small coffee machine provided by the application is shown in the sectional view.

[0036] Figure 7 A small coffee machine provided by the application is shown in the sectional view.

[0037] In the figure: 100, upper body; 200, lower body; 300, external water tank; 400, instant heating assembly; 500, water pump; 600, extraction assembly; 700, shaft sleeve assembly; 110, first cover part; 120, first rotating assembly; 130, clamping structure; 210, second cover part; 220, first mounting structure; 230, first through hole; 240, concave space; 250, second rotating assembly; 410, first water inlet; 420, first water outlet; 610, third water inlet; 620, third water outlet; 710, first shaft sleeve; 720, second shaft sleeve; 730, first step; 740, first protrusion; 750, second step; 760, second protrusion; 770, limiting structure; 780, positioning structure. DETAILED DESCRIPTION

[0038] The technical solutions in the application will be described in detail below with reference to the drawings in the application. Obviously, the described embodiments are only some of the embodiments of the application, rather than all the embodiments of the application. The components of the application described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0039] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] Please refer to Figures 1 to 7 The application provides a small coffee machine, and the technical scheme specifically comprises:

[0041] The upper body 100 and the lower body 200 are rotationally connected, the bottom of the upper body 100 is provided with a first cover part 110, the top of the lower body 200 is provided with a second cover part 210, and the positions of the first cover part 110 and the second cover part 210 are used to cover each other;

[0042] The second cover part 210 is provided with a first mounting structure 220 for mounting the external water tank 300, and a first through hole 230 is formed in the first mounting structure 220 to communicate the inside and outside of the lower body 200;

[0043] The instant heating assembly 400 is arranged in the lower body 200;

[0044] The water pump 500 is arranged in the lower body 200 and connected with the instant heating assembly 400.

[0045] The extraction assembly 600 directly or indirectly receives the water pumped out from the external water tank 300 by the water pump 500 to extract coffee.

[0046] The second covering part 210 arranged in the lower body 200 is mainly used to arrange the first mounting structure 220, and the first mounting structure 220 is used to mount the external water tank 300. By mounting the external water tank 300, the water tank can be avoided to be arranged inside, so as to reduce the space occupation and facilitate carrying. Meanwhile, the inside of the lower body 200 is a hollow structure, and the instant heating assembly 400 and the water pump 500 are arranged in the lower body 200. The second covering part 210 is also used to seal the top of the lower body 200.

[0047] The first mounting structure 220 and the external water tank 300 are detachably connected, so as to facilitate dismounting and carrying. Specifically, the first mounting structure 220 can adopt a buckle connection structure or a bolt connection structure.

[0048] Specifically, the first mounting structure 220 can be a cavity surrounded, and the cavity is used to be nested and clamped with the external water tank 300.

[0049] The upper body 100 and the first covering part 110 shield the second covering part 210, mainly to shield the first mounting structure 220, so as to play a safety protection role.

[0050] Specifically, the first covering part 110 can be a shielding plane, and the second covering part 210 can be a plane or a curved surface.

[0051] Wherein, the instant heating assembly 400 can adopt a structure with a cavity, and a plurality of turns of electric heating wire are wound outside the cavity. Compared with a general small coffee machine that can only achieve a simple heating and keeping warm function and needs a long heating time, the scheme of the present application can adopt a larger heating structure, and since the external water tank 300 is not heated, the heating effect is better, the temperature control is more accurate, and functions such as steam extraction can also be achieved. The conventional small coffee machine either sets the water tank at the top position of the coffee machine or sets the water tank in the box, which will cause the problem of large space occupation. In the scheme of the present application, the coffee machine is set as an upper body 100 and a lower body 200, and the two are rotationally connected. Then, the first mounting structure 220 is arranged on the second covering part 210 of the lower body 200 to connect with the external water tank 300. That is, the coffee machine provided by the present application does not contain a water tank structure, but uses an external water tank to supply water, thereby greatly reducing the space occupation, and a larger instant heating assembly 400 can be set to achieve a more abundant and more refined and rapid heating effect.

[0052] Specifically, in the default storage state, the first covering part 110 of the upper body 100 corresponds to the second covering part 210 of the lower body 200. At this time, the first covering part 110 and the second covering part 210 cover each other. In specific use, the upper body 100 can be rotated to horizontally dislocate the first covering part 110 and the second covering part 210. The first covering part 110 no longer covers the second covering part 210, and the first mounting structure 220 arranged on the second covering part 210 is exposed. At this time, the external water tank 300 containing water can be connected and matched with the first mounting structure 220, so as to supply water through the external water tank 300, thereby realizing the extraction of coffee.

[0053] By setting the upper body 100 and the lower body 200 in a rotary connection, the upper body 100 and the lower body 200 can be relatively rotated, on this basis, the first covering part 110 is arranged on the upper body 100, and the second covering part 210 is arranged on the lower body 200, so that the two can cover each other, and the first mounting structure 220 is arranged on the second covering part 210 for mounting the external water tank 300, that is, the internal water tank does not need to be arranged on the upper body 100 and the lower body 200, so that the space occupation can be greatly reduced, at the same time, through the mutual covering of the first covering part 110 and the second covering part 210, dust and other sundries can be avoided from falling into the first mounting part, and dust and other sundries can also be avoided from falling into the inside of the lower body 200 through the first through hole 230, which has a good safety protection effect, and since the internal water tank does not need to be arranged, more space can be used to arrange the instant heating assembly 400, so that the purpose of rapid heating is achieved, and temperature control is more conducive to extracting coffee that meets the requirements, so that the scheme has the beneficial effects of small space occupation and good heating performance.

[0054] Further, with reference to Figure 2 In some embodiments, the second covering part 210 is arranged in an inwardly recessed manner to form an inner recess space 240, and the first mounting structure 220 is arranged in the inner recess space 240 and does not protrude from the top end surface of the lower body 200.

[0055] The second covering part 210 is arranged in an inwardly recessed structure to form an inner recess space 240, and the first mounting structure 220 is arranged in the inner recess space 240, so that the first mounting structure 220 does not protrude from the top end surface of the lower body 200, so that the first covering part 110 can better shield and can avoid interference.

[0056] In addition, the second covering part 210 is arranged in an inwardly recessed structure, and the first mounting structure 220 is arranged in the inner recess space 240, so that the external water tank 300 can be conveniently mounted and fixed, and the installation stability is improved, since the first mounting structure 220 is arranged in the inner recess space 240, when the external water tank 300 is connected, the first mounting structure 220 can play a guiding role, and the possibility of tilting and overturning of the external water tank 300 is reduced.

[0057] Further, with reference to Figure 3 In some embodiments, a space is left between the first covering part 110 and the second covering part 210, the extraction assembly 600 is arranged on the first covering part 110, and the bottom of the extraction assembly 600 corresponds to the covering of the second covering part 210.

[0058] The extraction assembly 600 is arranged on the first cover portion 110, and the bottom of the extraction assembly 600 corresponds to the second cover portion 210, so that, in use, the first cover portion 110 and the extraction assembly 600 are dislocated from the second cover portion 210 by rotating the upper machine body 100, at this time, the first cover portion 110 and the extraction assembly 600 are in a cantilever state, the extraction assembly 600 is provided with a third water inlet 610 and a third water outlet 620, and the extraction assembly 600 is provided with coffee powder, water enters the third water inlet 610 and impacts the coffee powder at a certain pressure to realize extraction, and the extracted coffee flows out of the third water outlet 620. Since the extraction assembly 600 is arranged on the first cover portion 110 of the upper machine body 100, the height of the coffee container can be consistent with the height of the lower machine body 200, so that a larger amount of coffee can be loaded at one time.

[0059] In addition, since the extraction assembly 600 is arranged on the first cover portion 110, the bottom of the extraction assembly 600 corresponds to the second cover portion 210, so that, when the coffee machine is not in use, the position of the extraction assembly 600 corresponds to the second cover portion 210 by rotating the upper machine body 100, and the second cover portion 210 is covered to realize storage, on the one hand, the extraction assembly 600 can be protected, on the other hand, the space is effectively utilized, the space occupation is reduced, the overall coffee machine after storage can be regular, and the single coffee capacity can be increased.

[0060] Further, in some embodiments, the instant heating assembly 400 is provided with a first water inlet 410 and a first water outlet 420, and is provided with at least one temperature detection device, the water pump 500 is provided with a second water inlet and a second water outlet, and the extraction assembly 600 is provided with a third water inlet 610 and a third water outlet 620.

[0061] Among them, the external water tank 300, the instant heating assembly 400, the water pump 500 and the extraction assembly 600 can be provided with valves according to actual needs, and the valves can be electromagnetic valves, and the electromagnetic valves can control the on-off of the pipelines.

[0062] Specifically, in one connection mode, the first water inlet 410 is connected with the first through hole 230, the second water inlet is connected with the first water outlet 420, and the third water inlet 610 is connected with the second water outlet.

[0063] Through this connection mode, in the specific use process, the instant heating assembly 400 is connected through the first water inlet 410 and the first through hole 230, so as to realize the communication with the external water tank 300, therefore, the water in the external water tank 300 can flow directly into the instant heating assembly 400, and the instant heating assembly 400 can rapidly heat the water at high power, since the water pump 500 is connected through the second water inlet and the first water outlet 420, and at least a temperature detection device, specifically a temperature sensor, is arranged on the instant heating assembly 400, therefore, when the temperature of the heated water reaches the set value, the water pump 500 provides power to pump the water in the instant heating assembly 400 out through the second water outlet of the water pump 500, and the second water outlet of the water pump 500 is connected to the third water inlet 610 of the extraction assembly 600, so as to impact and extract the internal coffee powder, and finally the coffee flows out from the third water outlet 620.

[0064] When this connection mode is adopted, the instant heating assembly 400 can adopt an open structure, that is, it does not need to be closed, which has the advantages of simple temperature control, low cost, no high-pressure risk, and high safety.

[0065] Specifically, in another connection mode, the second water inlet is connected to the first through hole 230, the first water inlet 410 is connected to the second water outlet, and the third water inlet 610 is connected to the first water outlet 420.

[0066] Through this connection mode, in the specific use process, the water pump 500 is connected through the second water inlet and the first through hole 230, so as to pump the water in the external water tank 300 to the instant heating assembly 400 through the water pump 500 for heating, and after the water is heated to the set temperature, the water is pumped to the extraction assembly 600 through the power of the water pump 500 for coffee extraction.

[0067] When this connection mode is adopted, the instant heating assembly 400 needs to be arranged in a closed pipeline structure, which can realize the function of steam extraction and can realize rich functions.

[0068] Further, with reference to Figure 4 and Figure 5 In some embodiments, the upper machine body 100 is provided with a first rotating assembly 120, the lower machine body 200 is provided with a second rotating assembly 250, the first rotating assembly 120 and the second rotating assembly 250 are rotationally connected, and the first rotating assembly 120 or the second rotating assembly 250 is provided with a connecting hole communicating the upper machine body 100 and the lower machine body 200, and a shaft sleeve assembly 700 is further arranged between the first rotating assembly 120 and the second rotating assembly 250.

[0069] The shaft sleeve assembly 700 comprises a first shaft sleeve 710 and a second shaft sleeve 720 which are rotationally matched with each other.

[0070] The first shaft sleeve 710 is a vertical cylindrical structure, and a first step 730 is arranged on the top in the horizontal direction. The first shaft sleeve 710 is provided with a first through hole 230 penetrating the bottom surface and the top surface, and the first through hole 230 is embedded on the second rotating assembly 250. The first step 730 and the outer surface of the first shaft sleeve 710 are further provided with a first protrusion 740 protruding from the outer surface;

[0071] The second shaft sleeve 720 is a vertical cylindrical structure, and a second step 750 is arranged on the bottom in the horizontal direction. The second shaft sleeve 720 is provided with a second through hole penetrating the bottom surface and the top surface for nested rotation with the first shaft sleeve 710. The circumferential outer surface of the second shaft sleeve 720 is embedded on the first rotating assembly 120. The second step 750 is provided with a second protrusion 760 protruding from the inner surface at the corresponding position of the second through hole;

[0072] The end of the first shaft sleeve 710 away from the first step 730 is in contact with the second protrusion 760, and the end of the second shaft sleeve 720 away from the second step 750 is in contact with the first protrusion 740.

[0073] A connecting hole is arranged on the first rotating assembly 120 or the second rotating assembly 250 to communicate the upper machine body 100 and the lower machine body 200. Through the connecting hole, the water pump 500 and the extraction assembly 600 of the lower machine body 200 can be connected by a pipeline. That is, the pipeline passes through the connecting hole and connects the water pump 500 and the extraction assembly 600. At the same time, the wires of some electrical appliances of the upper machine body 100 can be introduced into the power supply of the lower machine body 200 through the connecting hole. That is, the connecting hole can be used to place the pipeline and the wires, and thus has the advantage of high safety.

[0074] The shaft sleeve assembly 700 arranged between the first rotating assembly 120 and the second rotating assembly 250 can avoid wear caused by friction between the first rotating assembly 120 and the second rotating assembly 250. That is, the shaft sleeve assembly 700 can facilitate disassembly and replacement, and thus has the advantage of low maintenance cost in the later period.

[0075] Furthermore, the end of the first shaft sleeve 710 away from the first step 730 is in contact with the second protrusion 760, and the end of the second shaft sleeve 720 away from the second step 750 is in contact with the first protrusion 740. In this way, the contact area between the two can be reduced, thereby reducing the friction force, which is conducive to the rotation between the upper machine body 100 and the lower machine body 200.

[0076] Further, with reference to Figure 6 and Figure 7In some embodiments, the top of the first shaft sleeve 710 is provided with a limiting structure 770 protruding from the top surface, and the first rotating assembly 120 is provided with a fixed clamping structure 130, which is located above the top of the first shaft sleeve 710 and does not exceed the limiting structure 770, and is used to contact the limiting structure 770 after the upper body 100 is rotated to a specified position.

[0077] Specifically, the outer circumferential surface of the first shaft sleeve 710 is provided with an inwardly recessed positioning structure 780.

[0078] Specifically, the positioning structure 780 is arranged on the outer surface of the first step 730.

[0079] Specifically, the side surface of the clamping structure 130 is provided with a circular arc portion, which is used to cooperate with the positioning structure 780.

[0080] By arranging the clamping structure 130 and the positioning structure 780, the rotation of the upper body 100 can be limited, which can not only ensure that the upper body 100 does not shake during coffee extraction, thereby improving the stability of the extraction process, but also can avoid excessive rotation of the upper body 100 to damage the line pipe, thereby improving the safety.

[0081] Further, in some embodiments, the capacity of the extraction assembly 600 is 30ml-160ml, and the extraction pressure is 3bar-20bar.

[0082] In some of the above embodiments, by the scheme of the present application, the upper body 100 and the lower body 200 are arranged in a rotating connection, and the extraction assembly 600 is arranged in the upper body 100. In specific use, the upper body 100 is rotated to make the extraction assembly 600 in a cantilever state. Therefore, when a cup is used to receive the extracted coffee, the height of the cup can be equal to that of the lower body 200, and the receiving capacity can reach 30ml-160ml, which is much higher than that of an ordinary portable small coffee machine. Therefore, by adopting the scheme of the present application, the capacity of the extraction assembly 600 can be set to 30ml-160ml, and the extraction pressure is 3bar-20bar, thereby meeting the different needs of espresso and American coffee.

[0083] The above only describes the embodiments of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A compact coffee maker, characterized in that, The utility model relates to a coffee machine, comprising: a rotatably connected upper body (100) and lower body (200), the bottom of the upper body (100) is provided with a first cover part (110), the top of the lower body (200) is provided with a second cover part (210), the positions of the first cover part (110) and the second cover part (210) are used to cover each other; the second cover part (210) is provided with a first mounting structure (220) for mounting an external water tank (300), and a first through hole (230) is formed in the first mounting structure (220) to communicate the inside and outside of the lower body (200); a instant heating assembly (400) is arranged in the lower body (200); a water pump (500) is arranged in the lower body (200) and connected with the instant heating assembly (400); an extraction assembly (600) directly or indirectly receives water pumped out from the external water tank (300) by the water pump (500) to extract coffee.

2. A compact coffee maker according to claim 1, characterized in that The second cover part (210) is inwardly recessed and forms an inner recess space (240), and the first mounting structure (220) is arranged in the inner recess space (240) and does not exceed the top end surface of the lower body (200).

3. A compact coffee maker according to claim 1, characterized in that The first cover part (110) and the second cover part (210) are spaced apart, the extraction assembly (600) is arranged in the first cover part (110), and the bottom of the extraction assembly (600) is covered by the second cover part (210).

4. A compact coffee maker according to claim 1, characterized in that The instant heating assembly (400) is provided with a first water inlet (410) and a first water outlet (420), and at least one temperature detection device is arranged, the water pump (500) is provided with a second water inlet and a second water outlet, and the extraction assembly (600) is provided with a third water inlet (610) and a third water outlet (620).

5. A compact coffee maker according to claim 4, characterized in that The first water inlet (410) is connected with the first through hole (230), the second water inlet is connected with the first water outlet (420), and the third water inlet (610) is connected with the second water outlet.

6. A compact coffee maker according to claim 4, characterized in that The second water inlet is connected with the first through hole (230), the first water inlet (410) is connected with the second water outlet, and the third water inlet (610) is connected with the first water outlet (420).

7. A compact coffee maker according to claim 3, characterized in that The upper body (100) is provided with a first rotating assembly (120), the lower body (200) is provided with a second rotating assembly (250), the first rotating assembly (120) and the second rotating assembly (250) are rotatably connected, and the first rotating assembly (120) or the second rotating assembly (250) is provided with a connecting hole communicating the upper body (100) and the lower body (200), and a shaft sleeve assembly (700) is further arranged between the first rotating assembly (120) and the second rotating assembly (250); the shaft sleeve assembly (700) comprises a first shaft sleeve (710) and a second shaft sleeve (720) which are rotatably nested with each other. The first shaft sleeve (710) is a vertical cylindrical structure, and a first step (730) is arranged on the top in the horizontal direction, the first shaft sleeve (710) is provided with a first through hole (230) penetrating the bottom surface and the top surface, the first through hole (230) is embedded on the second rotating assembly (250), and a first protrusion (740) protruding from the outer surface is further arranged between the first step (730) and the outer surface of the first shaft sleeve (710); The second shaft sleeve (720) is a vertical cylindrical structure, and a second step (750) is arranged on the bottom in the horizontal direction, the second shaft sleeve (720) is provided with a second through hole penetrating the bottom surface and the top surface for nested rotating cooperation with the first shaft sleeve (710), the circumferential outer surface of the second shaft sleeve (720) is embedded on the first rotating assembly (120), and a second protrusion (760) protruding from the inner surface is arranged on the second step (750) at the corresponding position of the second through hole; The end of the first shaft sleeve (710) away from the first step (730) is in contact with the second protrusion (760), and the end of the second shaft sleeve (720) away from the second step (750) is in contact with the first protrusion (740).

8. A compact coffee maker according to claim 7, characterized in that The top of the first shaft sleeve (710) is provided with a limiting structure (770) protruding from the top surface, the first rotating assembly (120) is provided with a fixed clamping structure (130), the clamping structure (130) is located above the top of the first shaft sleeve (710) and does not exceed the limiting structure (770), and is used for being in contact with the limiting structure (770) after the upper machine body (100) is rotated to a specified position.

9. A compact coffee maker according to claim 8, characterized in that The outer circumferential surface of the first shaft sleeve (710) is provided with an inwardly recessed positioning structure (780), the side surface of the clamping structure (130) is provided with a circular arc portion, the circular arc portion is used for cooperating with the positioning structure (780), and the positioning structure (780) is arranged on the outer surface of the first step (730).

10. A compact coffee maker according to claim 3, characterized in that The capacity of the extraction assembly (600) is 30ml-160ml, and the extraction pressure is 3bar-20bar.

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