Portable coffee machine

Abstract

The embodiment of the utility model relates to a portable coffee machine. The portable coffee machine comprises a water tank, a coffee machine body, a heater and a heat insulation pad. The water tank is connected to one end of the coffee machine body; a containing cavity is formed between the water tank and the coffee machine body, and the heater and the heat insulation pad are arranged in the containing cavity; the heat insulation pad is arranged between the heater and the coffee machine body in a separated mode. By means of the arrangement, the water tank is heated through the heater, the heat insulation pad is arranged between the heater and the coffee machine body in a separated mode, heat generated by the heater can act on the water tank instead of escaping towards the coffee machine body, and the heat utilization rate of the heater is increased.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of coffee machines. Background Art

[0002] With the acceleration of the pace of modern life, people's demand for coffee is growing. They are not limited to enjoying coffee at home or in professional coffee shops, but also hope to drink coffee conveniently outdoors, on the road or in the office. Based on this, portable coffee machines came into being. Currently, there are various designs of portable coffee machines on the market, and they have multiple advantages, such as portability. Many portable coffee machines are compact and easy to carry, and have a brewing effect comparable to that of home coffee machines. Another example is the convenience of operation. Many portable coffee machines are easy to operate, and users can quickly get delicious coffee without having to perform multiple steps.

[0003] In the process of realizing the present application, the applicant discovered that: a portable coffee machine is provided with a water tank and a heater for heating the water tank, and the design of existing portable coffee machines often focuses on the portability and functionality of the coffee machine itself, while ignoring the problem of the heating efficiency of the water tank by the heater, that is, in the existing portable coffee machines, although the heater can heat the water tank, the heat of the heater has little effect on the water tank, and the utilization rate of the heat of the heater is not high. Utility Model Content

[0004] In view of the above problems, an embodiment of the present application provides a portable coffee machine, which overcomes the above problems or at least partially solves the above problems.

[0005] According to one aspect of an embodiment of the present application, a portable coffee maker is provided, comprising: a water tank, a coffee machine body, a heater and an insulating pad; the water tank is connected to one end of the coffee machine body; a accommodating cavity is provided between the water tank and the coffee machine body, the heater and the insulating pad are arranged in the accommodating cavity; the insulating pad is arranged between the heater and the coffee machine body.

[0006] In an optional manner, the heater is attached to the water tank.

[0007] In an optional manner, the heater includes a heating plate, and the heating plate is overlapped with the thermal insulation pad.

[0008] In an optional manner, the direction from the heater to the thermal insulation pad is a first direction, and along the first direction, the projected area of ​​the heater is smaller than the projected area of ​​the thermal insulation pad.

[0009] In an optional manner, the water tank includes an inner box body and an outer box body, the inner box body is provided with a water storage cavity, the accommodating cavity is formed between the inner box body and the coffee machine body, the outer box body is sleeved outside the inner box body, and the outer box body is connected to one end of the coffee machine body.

[0010] In an optional manner, the heater is disposed between the bottom of the inner box and the coffee machine body.

[0011] In an optional embodiment, the water tank also includes an intermediate box body, which is arranged between the inner box body and the outer box body, and the intermediate box body is provided with a support member, and the thermal insulation pad, heater and inner box body are stacked on the support member in sequence, and there is a storage space between the thermal insulation pad and the coffee machine body; the coffee machine body includes a circuit board, and the storage space is used for the electronic components on the circuit board, and the storage space is used for heat dissipation of the electronic components on the circuit board.

[0012] In an optional manner, the middle box is provided with a plurality of supporting feet, a plurality of hollow portions are formed between the plurality of supporting feet, the supporting feet pass through the circuit board and are connected to the coffee machine body, and the plurality of hollow portions are communicated with the accommodating space.

[0013] In an optional manner, the portable coffee machine further includes a coffee cup, which is connected to the other end of the coffee machine body.

[0014] The beneficial effects of the embodiments of the present application include: providing a portable coffee machine, including a water tank, a coffee machine body, a heater and a heat-insulating pad; the water tank is connected to one end of the coffee machine body; there is a receiving cavity between the water tank and the coffee machine body, the heater and the heat-insulating pad are arranged in the receiving cavity; the heat-insulating pad is arranged between the heater and the coffee machine body. Through the above arrangement, the water tank is heated by the heater, and the heat-insulating pad is arranged between the heater and the coffee machine body, so that the heat generated by the heater can act on the water tank instead of escaping toward the coffee machine body, thereby improving the utilization rate of the heat of the heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0016] Figure 1 is a three-dimensional diagram of a portable coffee machine provided in an embodiment of the present application;

[0017] Figure 2 The embodiment of the present application provides Figure 1 A schematic diagram of a portion of the cross-sectional view taken along line AA;

[0018] Figure 3 The embodiment of this application provides Figure 2 The enlarged schematic diagram of the middle B part;

[0019] Figure 4 is a schematic structural diagram of the intermediate box provided in an embodiment of the present application;

[0020] Figure 5 is a partial exploded schematic diagram of a portable coffee machine provided in an embodiment of the present application in one direction;

[0021] Figure 6 is a partial exploded schematic diagram of the portable coffee machine provided by an embodiment of the present application from another direction;

[0022] Figure 7 The embodiment of this application provides Figure 2 The enlarged schematic diagram of the middle C part;

[0023] Figure 8 The embodiment of the present application provides Figure 1 A schematic diagram of another part of the cross-sectional view taken along line AA;

[0024] Fig. 9 The embodiment of the present application provides Figure 1 A schematic diagram of a partial cross-sectional view taken along line A'-A' without the coffee cup;

[0025] Fig.10 is a schematic diagram of a flow guide seat provided in an embodiment of the present application;

[0026] Fig.11 is an exploded schematic diagram of another form of a portable coffee machine provided in an embodiment of the present application;

[0027] Fig.12 The embodiment of the present application provides Fig.11 Cross-sectional view of the middle DD;

[0028] Fig.13 The embodiment of this application provides Fig.12 Enlarged schematic diagram of part E in the middle.

[0029] The reference numerals are as follows:

[0030] Portable coffee machine 100, water tank 1, coffee machine body 2, heater 3, heat insulation pad 4, sealing ring 5, coffee cup 6;

[0031] A first direction L1, a central axis O0 of the coffee machine body 2, a horizontal direction L2;

[0032] Accommodating cavity 101, accommodating space 102,

[0033] Inner box 11, outer box 12, middle box 13;

[0034] Support member 131, support foot 132, hollow portion 132s, sealing groove 133, first gap 11s, second gap 12s;

[0035] Water storage part 111, upper cover 112, sealing member 113, abutting member 1111, water storage chamber 1101, mounting foot 1112;

[0036] Circuit board 21, housing 22, bracket 23, water pump 24, flow guide seat 25, brewing head 26, power supply 27;

[0037] Internal thread 121, one end 1211 of the internal thread 121, the other end 1212 of the internal thread 121, a flat surface 1213, and a first guiding inclined surface 1214;

[0038] External thread 221, one end 2211 of the external thread 221, the other end 2212 of the external thread 221, a stopper 2213, and a second guiding inclined surface 2214;

[0039] Boss 222;

[0040] Baffle 231;

[0041] Liquid inlet 241s, liquid outlet 242s;

[0042] Guide groove 251;

[0043] Liquid inlet 26s, brewing body 261, end cover 262, sealing ring 263, accommodating cavity 2611;

[0044] A first central axis O1, a second central axis O2, and a third central axis O3;

[0045] A first limit stopper 25a, a second limit stopper 25b, a third limit stopper 25c, a limit cavity 25s, a guide rail 25c1, and a guide inclined surface 25c2;

[0046] Raised platform 223;

[0047] A first rotation direction C1, a second rotation direction C2;

[0048] The limiting protrusion 61 , the arc portion 62 , and the flat portion 63 . DETAILED DESCRIPTION

[0049] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only.

[0050] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0051] See also Figure 1 The portable coffee machine 100 comprises a water tank 1 and a coffee machine body 2. The water tank 1 is disposed at one end of the coffee machine body 2. The portable coffee machine 100 is used by a user to brew coffee capsules to obtain coffee drinks. The water tank 1 is used to store liquid for brewing coffee capsules, and the coffee machine body 2 is used for the liquid in the water tank 1 to flow into and brew coffee capsules.

[0052] For tank 1 above, see Figure 2 There is a accommodating cavity 101 between the water tank 1 and the coffee machine body 2, and the accommodating cavity 101 is used to accommodate the heater 3 for heating the water tank 1, and is used to enable the heat of the heater 3 to act on the insulation pad 4 of the water tank 1, and the circuit board 21 in the coffee machine body 2 for supporting the electronic components of the portable coffee machine 100.

[0053] In some embodiments, the water tank 1 includes an inner box body 11 and an outer box body 12, the inner box body 11 is provided with a water storage chamber 1101, the water storage chamber 1101 is used to store liquid for brewing coffee capsules, the accommodating chamber 101 is formed between the inner box body 11 and the coffee machine body 2, the outer box body 12 is sleeved outside the inner box body 11, and the outer box body 12 is connected to one end of the coffee machine body 2.

[0054] In some embodiments, there is a first gap 11s between the outer box body 12 and the inner box body 11, and the first gap 11s is connected to the accommodating cavity 101. The first gap 11s is used to accommodate the heat generated by the circuit board 21 of the coffee machine body 2 that flows into the accommodating cavity 101. The first gap 11s can also be used to accommodate the heat generated by the heater 3. The heat will act on the inner box body 11 to heat the liquid in the water storage cavity 1101 in the inner box body 11, thereby realizing the reasonable and efficient use of the heat generated by the circuit board 21.

[0055] In some embodiments, the water tank 1 also includes an intermediate box body 13, which is sleeved between the inner box body 11 and the outer box body 12. The intermediate box body 13 is provided with a support member 131, and the support member 131 is used for the insulation pad 4, the heater 3 and the inner box body 11 to be stacked in sequence to form a receiving space 102 between the insulation pad 4 and the coffee machine body 2. The receiving space 102 can be used for the electronic components on the circuit board 21 in the coffee machine body 2. The receiving space 102 can be used for heat dissipation of the electronic components on the circuit board 21.

[0056] It can be understood that the accommodating space 102 is actually a part of the accommodating cavity 101 .

[0057] It is worth noting that, in some embodiments, the intermediate box 13 is located in the first gap 11s, the intermediate box 13 is sleeved between the inner box 11 and the outer box 12, and there is a second gap 12s between the intermediate box 13 and the inner box 11, the second gap 12s is communicated with the accommodating cavity 101, and the intermediate box 13 is sealed and connected to the outer box 12. Among them, the second gap 12s is actually a part of the first gap 11s. By setting the intermediate box 13, forming the second gap 12s between the intermediate box 13 and the inner box 11, and the inner box 11 and the outer box 12 are sealed and connected, the heat generated by the circuit board 21 can be gathered in the narrow second gap 12s, and the heat generated by the heater 3 can be gathered in the narrow second gap 12s, so that the heat acts on the inner box 11 more efficiently, heat is provided for the liquid in the water storage cavity 1101 in the inner box 11, and more reasonable and efficient use of the heat generated by the circuit board 21 and the heat generated by the heater 3 can be achieved.

[0058] It is worth noting that, in some embodiments, see Figure 3The inner box 11 extends an abutment member 1111 toward the middle box 13, and the abutment member 1111 abuts against the inner wall of the middle box 13. By providing the abutment member 1111, the second gap 12s is further reduced, and the effect of the heat generated by the circuit board 21 and the heat generated by the heater 3 on the inner box 11 is further increased, so as to achieve more reasonable and efficient use of heat.

[0059] It is worth noting that, in some embodiments, the inner box body 11 includes a water storage portion 111, an upper cover 112 and a sealing member 113, the water storage portion 111 extends the abutment 1111 toward the middle box body 13, the water storage cavity 1101 is located in the water storage portion 111, the upper cover 112 is covered at the cavity opening of the water storage cavity 1101, one end of the sealing member 113 is located between the water storage portion 111 and the upper cover 112, and the other end of the sealing member 113 is located between the outer box body 12, the middle box body 13 and the abutment 1111. With this arrangement, on the one hand, the upper cover 112 is opened to clean the water storage chamber 1101 in the inner box body 11, and on the other hand, the outer box body 12, the middle box body 13 and the abutment 1111 are sealed by the sealing member 113, that is, the end of the second gap 12s close to the abutment 1111 is sealed to prevent heat from escaping and cause the heat to act on the inner box body 11.

[0060] It is worth noting that, in some embodiments, see Figure 2 The inner box 11 extends a mounting foot 1112 toward the accommodating cavity 101, and the mounting foot 1112 is arranged on the support member 131 after passing through the thermal insulation pad 4. The mounting foot 1112 and the support member 131 are connected by screws to connect the inner box 11 to the intermediate box 13.

[0061] It is worth noting that, in some embodiments, see Figure 2 and Figure 4 The middle box 13 is provided with a plurality of supporting legs 132, and a plurality of hollow portions 132s are formed between the plurality of supporting legs 132. The supporting legs 132 pass through the circuit board 21 of the coffee machine body 2 and are connected to the coffee machine body 2. The plurality of hollow portions 132s are in communication with the accommodation space 102. By providing a plurality of supporting legs 132 and a plurality of hollow portions 132s, on the one hand, the arrangement of the plurality of supporting legs 132 facilitates the connection of the middle box 13 to the coffee machine body 2. On the other hand, the arrangement of the plurality of hollow portions 132s increases the accommodation space 102, increases the heat dissipation space of the circuit board 21, and reduces the risk of overheating and damage of the circuit board 21.

[0062] For heater 3 above, see Figure 2The heater 3 is disposed in a receiving cavity 101 formed between the water tank 1 and the coffee machine body 2 , and the heater 3 is used to heat the liquid in the water tank 1 .

[0063] In some embodiments, the heater 3 is attached to the water tank 1, thereby improving the utilization rate of the heat generated by the heater 3. It can be understood that when the water tank 1 includes an inner box 11, in some embodiments, the heater 3 is located between the inner box 11 and the thermal insulation pad 4; in some other embodiments, the heater 3 is attached to the inner box 11.

[0064] In some embodiments, the heater 3 is disposed between the bottom of the inner box 11 and the coffee machine body 2. That is, the heater 3 is located in the accommodating cavity 101 formed between the inner box 11 and the coffee machine body 2, and the accommodating cavity 101 is located between the bottom of the inner box 11 and the coffee machine body 2, and the structure of the portable coffee machine 100 is compact.

[0065] It is worth noting that the bottom of the inner box 11 is arranged toward the coffee machine body 2 .

[0066] In some embodiments, the heater 3 comprises a heating plate, which is a device that converts electrical energy into thermal energy. In some other embodiments, the heater 3 comprises a heating wire, which is also a device that converts electrical energy into thermal energy.

[0067] For the above insulation pad 4, please refer to Figure 2 The heat-insulating pad 4 is arranged in the accommodating cavity 101 formed between the water tank 1 and the coffee machine body 2. The heat-insulating pad 4 is arranged between the heater 3 and the coffee machine body 2. The heat-insulating pad 4 is used to isolate the heat generated by the heater 3, so as to promote the heat generated by the heater 3 toward the water tank 1 and reduce the heat from escaping toward the coffee machine body 2. By arranging the heat-insulating pad 4 between the heater 3 and the coffee machine body 2, when the water tank 1 is heated by the heater 3, the heat-insulating pad 4 can promote the heat generated by the heater 3 to act on the water tank 1 instead of escaping toward the coffee machine body 2, thereby improving the utilization rate of the heat of the heater 3.

[0068] For the above heater 3 and insulation pad 4, please refer to Figure 2 In some embodiments, the heater 3 is stacked with the thermal insulation pad 4. When the heater 3 includes a heating plate, the heating plate is stacked with the thermal insulation pad 4. By stacking the heater 3 / heating plate with the thermal insulation pad 4, space is saved and the structure of the portable coffee machine 100 is compact.

[0069] It is worth noting that, in some embodiments, the direction from the heater 3 to the thermal insulation pad 4 is the first direction L1, and along the first direction L1, the projected area of ​​the heater 3 is smaller than the projected area of ​​the thermal insulation pad 4. Since along the first direction L1, the projected area of ​​the heater 3 is smaller than the projected area of ​​the thermal insulation pad 4, that is, the thermal insulation pad 4 covers the heater 3, the thermal insulation pad 4 can cause the heat generated by the heater 3 to act on the inner box 11, and it is not easy to escape toward the circuit board 21 in the coffee machine body 2, which can not only increase the utilization of the heat generated by the heater 3 by the water tank 1, but also reduce the damage to the circuit board 21 caused by the heat generated by the heater 3, thereby extending the service life of the circuit board 21.

[0070] In some embodiments, the first direction L1 is also the axial direction of the body of the portable coffee machine 100 .

[0071] For the above-mentioned coffee machine body 2, the coffee machine body 2 includes a circuit board 21, and the circuit board 21 provides support for the electronic components of the portable coffee machine 100 body. The circuit board 21 is accommodated in the accommodating cavity 101 between the water tank 1 and the coffee machine body 2. When the water tank 1 includes an inner box body 11, the circuit board 21 is accommodated in the accommodating cavity 101 formed between the inner box body 11 and the coffee machine body 2.

[0072] The circuit board 21 is located between the heater 3 and the coffee machine body 2 .

[0073] It is worth noting that the portable coffee machine 100 includes a water tank 1, a coffee machine body 2, a heater 3 and an insulation pad 4; the water tank 1 includes an inner box 11 and an outer box 12, the inner box 11 is provided with a water storage cavity 1101, a receiving cavity 101 is formed between the inner box 11 and the coffee machine body 2, the outer box 12 is sleeved outside the inner box 11, and a first gap 11s is provided between the outer box 12 and the inner box 11, the first gap 11s is communicated with the receiving cavity 101, and the outer box 12 is provided with a first gap 11s between the outer box 12 and the inner box 11. The box body 12 is connected to one end of the coffee machine body 2; the coffee machine body 2 includes a circuit board 21, and the circuit board 21, the heater 3 and the insulation pad 4 are arranged in the accommodating cavity 101; the heater 3 is located between the inner box body 11 and the insulation pad 4, and the circuit board 21 is located between the heater 3 and the coffee machine body 2; the direction from the heater 3 to the insulation pad 4 is a first direction L1, and along the first direction L1, the projection area of ​​the heater 3 is smaller than the projection area of ​​the insulation pad 4. Through the above arrangement, on the one hand, the heat generated by the circuit board 21 during operation can act on the inner box 11 through the first gap 11s, and heat the water storage chamber 1101 in the inner box 11, thereby utilizing the heat generated by the circuit board 21 during operation; on the other hand, since the projected area of ​​the heater 3 along the first direction L1 is smaller than the projected area of ​​the heat insulation pad 4, that is, the heat insulation pad 4 covers the heater 3, the heat insulation pad 4 can cause the heat generated by the heater 3 to act on the inner box 11, and it is not easy to escape toward the circuit board 21 in the coffee machine body 2, which can not only increase the utilization of the heat generated by the heater 3 by the water tank 1, but also reduce the damage to the circuit board 21 caused by the heat generated by the heater 3, thereby extending the service life of the circuit board 21. That is, through the technical solution of the portable coffee machine 100 provided by the present application, not only the heat generated by the circuit board 21 during operation can act on the water tank 1, but also the heat generated by the heater 3 can act on the water tank 1 efficiently, and the heat generated by the heater 3 is not easy to act on the circuit board 21 that needs to be dissipated. In other words, the heat generated by the heater 3 and the circuit board 21 can act on the water tank 1 and reduce the heat of the circuit board 21, that is, the heat generated by the portable coffee machine 100 is supplied to the components that need heat and away from the components that do not need heat. The portable coffee machine 100 provided in this application has efficient and reasonable heat utilization.

[0074] In some embodiments, the coffee machine body 2 includes a housing 22, the outer box 12 is connected to one end of the housing 22, the intermediate box 13 is sealed to the housing 22 via a sealing ring 5, or the intermediate box 13 is sealed to the outer box 12 via a sealing ring 5. As an example, Figure 2The diagram shows that the intermediate box 13 and the housing 22 of the coffee machine body 2 are sealed and connected by a sealing ring 5. By providing the sealing ring 5, the heat generated by the circuit board 21 during operation can flow into the second gap 12s between the inner box 11 and the intermediate box 13, rather than flowing into the gap between the intermediate box 13 and the outer box 12, thereby reducing heat loss. In addition, by providing the sealing ring 5, the intermediate box 13 and the outer box 12, or the intermediate box 13 and the coffee machine body 2, are tightly connected, and the coffee machine body 2 has a compact structure.

[0075] In some embodiments, the coffee machine body 2 includes a shell 22, the outer box body 12 is connected to one end of the shell 22, the intermediate box body 13 has a sealing groove 133, the notch of the sealing groove 133 faces the shell 22, and the intermediate box body 13 and the shell 22 are sealed by a sealing ring 5, and the sealing ring 5 is located in the sealing groove 133. By providing a sealing groove 133 in the middle box 13 and providing a sealing ring 5 between the middle box 13 and the shell 22, and the sealing ring 5 is located in the sealing groove 133, on the one hand, the sealing between the middle box 13 and the shell 22 is achieved, so that the heat generated by the circuit board 21 can flow into the second gap 12s between the inner box 11 and the middle box 13 instead of flowing into the gap between the middle box 13 and the outer box 12, thereby reducing the heat loss; on the other hand, because the sealing ring 5 is provided in the sealing groove 133 opened in the middle box 13, the sealing ring 5 is not easy to shift, and does not increase the distance between the middle box 13 and the shell 22 of the coffee machine body 2, and the structure of the coffee machine body 2 is compact.

[0076] In some embodiments, the coffee machine body 2 includes a bracket 23, the bracket 23 is located in the housing 22, and the circuit board 21 is stacked on one end of the bracket 23 facing the water tank 1. By providing the bracket 23, support can be provided for the circuit board 21.

[0077] For the above water tank 1 and coffee machine body 2, please refer to Figure 5, the water tank 1 and the coffee machine body 2 are screwed together. Specifically, the water tank 1 is provided with an internal thread 121, and one end of the coffee machine body 2 is provided with an external thread 221, and the internal thread 121 is screwed together with the external thread 221; the external thread 221 extends a stopper 2213 in a direction away from the water tank 1 at one end 1211 away from the water tank 1, and when the internal thread 121 is screwed together with the external thread 221, one end 1211 of the internal thread 121 abuts against the stopper 2213. With this arrangement, by providing the stopper 2213 on the external thread 221, when the internal thread 121 is screwed together with the external thread 221, the internal thread 121 is blocked by the stopper 2213, so that the water tank 1 cannot be further over-tightened with the coffee machine body 2, and thus it is convenient for the user to separate the water tank 1 and the coffee machine body 2 again, and the user experience is good.

[0078] It is worth noting that, in some embodiments, the end surface of the other end 1212 of the internal thread 121 provided on the water tank 1 is a flat surface 1213, and when the internal thread 121 is screwed with the external thread 221, the other end 2212 of the external thread 221 abuts against the flat surface 1213. By further setting the end surface of the other end 1212 of the internal thread 121 as the flat surface 1213, when the internal thread 121 is screwed with the external thread 221, one end 1211 of the internal thread 121 abuts against the stopper 2213 provided at one end 2211 of the external thread 221, and the other end 2212 of the external thread 221 abuts against the flat surface 1213 of the other end 1212 of the internal thread 121, that is, the internal thread 121 is blocked by the stopper 2213, and the external thread 221 is blocked by the flat surface 1213, so that the water tank 1 cannot be further over-tightened with the coffee machine body 2.

[0079] It is worth noting that, in some embodiments, one end 1211 of the internal thread 121 has a first guiding bevel 1214, and the other end 2212 of the external thread 221 has a second guiding bevel 2214, and the first guiding bevel 1214 and the second guiding bevel 2214 are used for the one end 1211 of the internal thread 121 to contact and slide with the other end 2212 of the external thread 221, so that the internal thread 121 is screwed with the external thread 221. By providing the first guiding bevel 1214 and the second guiding bevel 2214, when the internal thread 121 of the water tank 1 contacts with the external thread 221 of the coffee machine body 2, the first guiding bevel 1214 and the second guiding bevel 2214 provide guidance, so as to facilitate the contact and sliding of the internal thread 121 and the external thread 221, thereby facilitating the screwing of the internal thread 121 and the external thread 221.

[0080] It is worth noting that in some embodiments, please refer to Figure 5 and Figure 6The number of the internal threads 121 is two, and the two internal threads 121 are arranged alternately around each other. The number of the external threads 221 is two, and the two external threads 221 are arranged alternately around each other. With this arrangement, the two internal threads 121 and the two external threads 221 can be screwed together, thereby enhancing the tightness of the connection between the water tank 1 and the coffee machine body 2 through the internal threads 121 and the external threads 221.

[0081] It is worth noting that, in some embodiments, the coffee machine body 2 extends a boss 222 in a direction away from the central axis O0 thereof, and the stopper 2213 extends to the boss 222. The central axis O0 of the coffee machine body 2 is parallel to the first direction L1. By providing the boss 222 and further limiting the stopper 2213 to extend to the boss 222, when the internal thread 121 and the external thread 221 are screwed together, a three-sided surrounding limit formed by one end 2211 of the external thread 221, the stopper 2213 and the boss 222 on the one end 1211 of the internal thread 121 is formed, further preventing the water tank 1 and the coffee machine body 2 from being over-tightened.

[0082] It is worth noting that in some other embodiments, when the internal thread 121 and the external thread 221 are screwed together, the water tank 1 abuts against the boss 222. With this arrangement, when the internal thread 121 and the external thread 221 are screwed together, not only is a three-sided limiting situation formed by one end 2211 of the external thread 221, the stopper 2213 and the boss 222 on the one end 1211 of the internal thread 121, but the boss 222 on the coffee machine body 2 limits the water tank 1, further preventing the water tank 1 and the coffee machine body 2 from being over-tightened.

[0083] It is understood that in some embodiments, see Figure 7 The water tank 1 includes an inner box body 11 and an outer box body 12 . The inner box body 11 is provided with a water storage cavity 1101 . The outer box body 12 is sleeved outside the inner box body 11 . The outer box body 12 is provided with the internal thread 121 .

[0084] It can be understood that, in some embodiments, the coffee machine body 2 includes a shell 22, the external thread 221 is provided on the shell 22, and the shell 22 extends the boss 222 away from the central axis O0 of the coffee machine body 2. In some other embodiments, the water tank 1 also includes an intermediate box 13, the intermediate box 13 is sleeved between the inner box 11 and the outer box 12, and the intermediate box 13 and the shell 22 are sealed by a sealing ring 5. Through this arrangement, the outer box 12 of the water tank 1 is connected to the shell 22 of the coffee machine body 2 through the internal thread 121 and the external thread 221, and the intermediate box 13 and the shell 22 are sealed by the sealing ring 5, so as to achieve a sealed and fastened connection between the water tank 1 and the coffee machine body 2. In some other embodiments, the intermediate box 13 has a sealing groove 133, the notch of the sealing groove 133 faces the shell 22, and the sealing ring 5 is located in the sealing groove 133. This arrangement not only achieves a sealed and secure connection between the water tank 1 and the coffee machine body 2, but also because the sealing ring 5 is arranged in the sealing groove 133 provided in the intermediate box body 13, the sealing ring 5 is not easily displaced, and does not increase the distance between the intermediate box body 13 and the shell 22 of the coffee machine body 2, and the structure of the coffee machine body 2 is compact.

[0085] For the above coffee machine body 22, please refer to Figure 8 and Fig. 9 The coffee machine body 2 includes a housing 22, a water pump 24, a flow guide seat 25 and a brewing head 26; the water pump 24 is accommodated in the housing 22, and the liquid inlet 241s of the water pump 24 is connected to the water tank 1; the flow guide seat 25 is at least partially accommodated in the housing 22, and the flow guide seat 25 is provided with a flow guide groove 251 ( Fig.10 ), the liquid outlet 242s of the water pump 24 is communicated with one end of the guide groove 251, and the other end of the guide groove 251 is communicated with the liquid inlet 26s of the brewing head 26. Through the above arrangement, the liquid flowing out of the liquid outlet 242s of the water pump 24 passes through the guide groove 251 on the guide seat 25, and then enters the liquid inlet 26s of the brewing head 26. Compared with the technical solution in the prior art in which the liquid outlet 242s of the water pump 24 is designed to face the liquid inlet 26s of the brewing head 26, even if coffee powder splashes when brewing the coffee capsule, due to the design of the guide groove 251, the coffee powder can be reduced or isolated from contaminating or even clogging the water pump 24 or other equipment inside the coffee machine body 2, and the user experience is good.

[0086] It is worth noting that, in some embodiments, the brewing head 26 is detachably connected to the flow guide seat 25, or the brewing head 26 is detachably connected to the housing 22. The brewing head 26 can be screwed to the flow guide seat 25, or the brewing head 26 is screwed to the housing 22. As an example, Fig. 9The figure shows that the brewing head 26 can be screwed to the guide seat 25. With this arrangement, the brewing head 26 can be removed from the coffee machine body 2, which can facilitate the installation of coffee capsules in the brewing head 26. On the other hand, the brewing head 26 can be removed from the coffee machine body 2 to facilitate the cleaning of the other end of the guide groove 251 connected to the liquid inlet 26s of the brewing head 26.

[0087] It is worth noting that in some embodiments, please continue to refer to Fig. 9 , the first central axis O1 of the liquid inlet 26s of the brewing head 26 coincides with the central axis O0 of the coffee machine body 2, and the second central axis O2 of the liquid outlet 242s of the water pump 24 is away from the central axis O0 of the coffee machine body 2. The central axis O0 of the coffee machine body 2 is parallel to the first direction L1. Through this arrangement, the distance between the liquid outlet 242s of the water pump 24 and the liquid inlet 26s of the brewing head 26 is increased. Even if coffee powder splashes when brewing coffee capsules, since the liquid outlet 242s of the water pump 24 is designed to be away from the liquid inlet 26s of the brewing head 26, the coffee powder can be further reduced or isolated from contaminating or even clogging the water pump 24 or other devices inside the coffee machine body 2, and the user experience is good.

[0088] It is worth noting that, in some embodiments, along the horizontal direction L2 perpendicular to the central axis O0 of the coffee machine body 2, the water pump 24 is accommodated on one side of the housing 22, and the coffee machine body 2 further includes a power supply 27, which is accommodated on the other side of the housing 22. With this arrangement, the water pump 24 is arranged on one side of the housing 22, thereby freeing up more space for the power supply 27 in the coffee machine body 2, that is, the coffee machine body 2 can contain more or larger capacity power supplies 27, the portable coffee machine 100 has sufficient power, and the user experience is good.

[0089] The horizontal direction L2 is any direction perpendicular to the central axis O0 of the coffee machine body 2 .

[0090] In some other embodiments, please refer to Figure 8 and Fig. 9, the third central axis O3 of the liquid inlet 241s of the water pump 24 is arranged in parallel with the second central axis O2 of the liquid outlet 242s of the water pump 24. By this arrangement, relative to the situation that the third central axis O3 of the liquid inlet 241s of the water pump 24 is arranged perpendicularly or at a certain angle to the second central axis O2 of the liquid outlet 242s of the water pump 24, the main body of the water pump 24 is equivalent to a part of the pipeline for the liquid to flow from the water tank 1 into the brewing head 26, so when the liquid in the water tank 1 is pumped into the brewing head 26, the space occupied by the water pump 24 as a whole is small; in other words, by arranging the third central axis O3 of the liquid inlet 241s of the water pump 24 in parallel with the second central axis O2 of the liquid outlet 242s of the water pump 24, the space occupied by the water pump 24 as a whole can be saved, which can make the overall structure of the portable coffee machine 100 body compact on the one hand, and can free up more loading space in the housing 22 for the power supply 27 or other devices inside the coffee machine body 2 on the other hand.

[0091] In some embodiments, please refer to Figure 8 and Fig. 9 The coffee machine body 2 includes a bracket 23, which is received in the housing 22. The bracket 23 can provide support for the circuit board 21 in the coffee machine body 2 on one hand, and is also used for the water pump 24 on the other hand. The bracket 23 is supported by the guide seat 25, and the bracket 23 extends a baffle plate 231 toward the guide seat 25. The baffle plate 231 is arranged around the guide groove 251 to make the water pump 24, the guide groove 251, and the brewing head 26 sealed and connected. Through this arrangement, a sealed and connected channel is formed for liquid from the water tank 1 to the water pump 24, from the water pump 24 to the guide groove 251, and from the guide groove 251 to the brewing head 26, thereby reducing liquid leakage into the interior of the coffee machine body 2 and damaging the circuit board 21 or other devices inside the coffee machine body 2. In addition, through this arrangement, after the brewing head 26 is removed from the coffee machine body 2, when the part connected to the liquid inlet 26s of the brewing head 26 is cleaned, the cleaning liquid can be in the guide groove 251, but cannot enter the circuit board 21 or other equipment inside the coffee machine body 2, thereby protecting the circuit board 21 or other equipment in the coffee machine body 2.

[0092] In some embodiments, the brewing head 26 includes a brewing body 261 and an end cover 262, the liquid inlet 26s is provided on the brewing body 261, the brewing body 261 is provided with a receiving cavity 2611, the receiving cavity 2611 is used to receive capsule coffee, the receiving cavity 2611 is communicated with the liquid inlet 26s, and the end cover 262 is detachably connected to the brewing body 261. Since the end cover 262 is detachably connected to the brewing body 261, when it is necessary to load a coffee capsule into the receiving cavity 2611, it is only necessary to remove the end cover 262, and it is not necessary to remove the brewing head 26 as a whole from the coffee machine body 2, that is, it is convenient to replace the coffee capsule. In addition, when the liquid in the water pump 24 enters the liquid inlet 26s of the brewing head 26 through the guide groove 251, if the coffee powder in the coffee capsule contaminates the accommodating cavity 2611, since the end cover 262 is detachably connected to the brewing body 261, it is only necessary to remove the end cover 262 to clean the accommodating cavity 2611 without removing the entire brewing head 26. More importantly, in the embodiment of the present application, a guide seat 25 is arranged between the water pump 24 and the brewing head 26, and the water pump 24 and the brewing head 26 are connected through the guide groove 251. When the coffee capsule in the accommodating chamber 2611 is brewed, the coffee powder first contaminates the accommodating chamber 2611, and is not easy to enter the guide groove 251, let alone the water pump 24. Therefore, it is only necessary to remove the lower end cover 262 to clean the accommodating chamber 2611, without cleaning the guide groove 251, disassembling the guide seat 25, and even less necessary to clean the water pump 24. In other words, the portable coffee machine 100 provided in the embodiment of the present application is easy to clean.

[0093] It is understandable that the end cap 262 and the brewing body 261 can be connected by threads or by a sealing ring 263. Figure 8 The structure in which the end cover 262 is connected to the brewing body 261 via a sealing ring 263 is shown.

[0094] In some embodiments, not only the end cover 262 is detachably connected to the brewing body 261, but also the end cover 262 is detachably connected to the flow guide seat 25, and the flow guide seat 25 is sealed to the housing 22. The end cover 262 and the flow guide seat 25 can be screwed or connected via a sealing structure. As an example, Fig. 9 The figure shows the situation that the end cover 262 is screwed to the guide seat 25. With this arrangement, the end cover 262 is connected to the guide seat 25, and when the guide seat 25 is sealed to the shell 22, the end cover 262, the guide seat 25 and the shell 22 are tightly connected, and it is convenient to remove the end cover 262 from the guide seat 25 and the brewing body 261, so as to facilitate the replacement of coffee capsules or the cleaning of the accommodating cavity 2611 in the brewing body 261.

[0095] Preferably, the end cover 262 is screwed to the guide seat 25, and the brewing body 261 is connected to the end cover 262 via a sealing ring 263, or the end cover 262 is connected to the guide seat 25 via a sealing ring 263, and the brewing body 261 is screwed to the end cover 262. As an example, Fig. 9 The figure shows that the end cover 262 is screwed to the flow guide seat 25, and the brewing body 261 is connected to the end cover 262 via a sealing ring 263. With this arrangement, when the end cover 262 is removed from the flow guide seat 25 and the brewing body 261, it is not easy to slip and become unable to be removed. In addition, since the end cover 262 is screwed to the flow guide seat 25, it can only be rotated in one direction to be removed when the two are removed, and since the end cover 262 and the brewing body 261 are connected via a sealing ring 263, it is not necessary to consider the rotation direction when the two are removed. In other words, when the end cover 262 is removed from the flow guide seat 25 and the brewing body 261, the end cover 262 can only be rotated in one direction to be removed, and then the brewing body 261 can be cleaned, and the user experience is good.

[0096] It is worth noting that, in some embodiments, see Figure 1 or Fig.11 The portable coffee machine 100 also includes a coffee cup 6.

[0097] The coffee cup 6 is connected to the other end of the coffee machine body 2. The coffee cup 6 is used to support the coffee machine body 2 when the liquid in the water tank 1 brews coffee capsules through the coffee machine body 2. The coffee cup 6 is also used to receive the brewed coffee beverage flowing out of the coffee machine body 2. The coffee cup 6 is also used to facilitate users to directly use the coffee cup 6 to drink coffee beverages.

[0098] When the coffee machine body 2 includes a brewing head 26, please refer to Fig.11 , the brewing head 26 is partially received in the coffee cup 6. On the one hand, when the coffee cup 6 is assembled to the coffee machine body 2, along the central axis O0 of the coffee machine body 2, since the brewing head 26 is partially received in the coffee cup 6, the size of the portable coffee machine 100 is small along the central axis O0 of the coffee machine body 2. The central axis O0 of the coffee machine body 2 is parallel to the first direction L1. On the other hand, the brewing head 26 can be protected by the coffee cup 6 to reduce damage or contamination thereof.

[0099] For the above-mentioned coffee machine body 2 and coffee cup 6, please refer to Fig.11 , Fig.12 and Fig.13The water tank 1 is connected to one end of the coffee machine body 2, and the coffee cup 6 is connected to the other end of the coffee machine body 2 opposite to the water tank 1; the inner wall of the coffee cup 6 is provided with a limiting protrusion 61; the outer wall of the coffee machine body 2 is provided with a first limiting stopper 25a, a second limiting stopper 25b and a third limiting stopper 25c, the third limiting stopper 25c is provided between the first limiting stopper 25a and the second limiting stopper 25b, and a limiting cavity 25s is formed between the first limiting stopper 25a, the second limiting stopper 25b and the third limiting stopper 25c; along the coffee cup 6 and the outer wall of the coffee machine body 2, a limiting cavity 25s is formed between the first limiting stopper 25a, the second limiting stopper 25b and the third limiting stopper 25c. In the horizontal direction L2 perpendicular to the central axis O0 of the machine body 2, the size H1 of the first limit stop 25a is smaller than the size H2 of the second limit stop 25b, and the direction from the first limit stop 25a to the second limit stop 25b is the first rotation direction C1. When the coffee cup 6 is sleeved on the coffee machine body 2, the coffee cup 6 is rotated along the first rotation direction C1, and the limit protrusion 61 can cross the first limit stop 25a and be limited to the limit cavity 25s by the first limit stop 25a, the second limit stop 25b and the third limit stop 25c. With this arrangement, on the one hand, along the horizontal direction L2 perpendicular to the central axis O0 of the coffee machine body 2, the size H1 of the first limit stopper 25a is smaller than the size H2 of the second limit stopper 25b. When the coffee cup 6 is sleeved on the coffee machine body 2, the coffee cup 6 is rotated with a little force, and the limit protrusion 61 on the inner wall of the coffee cup 6 can cross the first limit stopper 25a, and then the limit protrusion 61 on the inner wall of the coffee cup 6 is limited by the first limit stopper 25a, the second limit stopper 25b and the third limit stopper 25c on the coffee machine body 2, so that the coffee cup 6 is firmly connected to the coffee machine body 2. On the other hand, since the size H1 of the first limit stopper 25a is smaller than the size H2 of the second limit stopper 25b, that is, the size H2 of the second limit stopper 25b is smaller than the size H2 of the second limit stopper 25b, the size H2 of the second limit stopper 25b is smaller than the size H2 of the second limit stopper 25b. The size H2 is larger than the size H1 of the first limit stopper 25a, and the second limit stopper 25b is used to limit the limit protrusion 61 of the coffee cup 6. Therefore, when the coffee cup 6 needs to be connected to the coffee machine body 2, if the user rotates the coffee cup 6 along the second rotation direction C2 opposite to the first rotation direction C1, due to the limiting effect of the second limit stopper 25b, the limit protrusion 61 on the inner wall of the coffee cup 6 cannot be rotated into the limit cavity 25s formed between the first limit stopper 25a, the second limit stopper 25b and the third limit stopper 25c. In other words, when the user rotates the coffee cup 6 to connect the coffee cup 6 to the coffee machine body 2, it can only rotate along the first rotation direction C1 but cannot rotate along the second rotation direction C2, thereby achieving "fool-proof" installation.More importantly, due to the special design of the connection scheme between the coffee cup 6 and the coffee machine body 2 of the present application, it is only necessary to set a limiting protrusion 61 on the inner wall of the coffee cup 6. Compared with the technical scheme of using threaded connection in the prior art, the inner wall of the coffee cup 6 is smooth, the user experience is good, and the coffee cup 6 is not easy to breed bacteria and is easy to clean.

[0100] The central axis O0 of the coffee machine body 2 is parallel to the first direction L1.

[0101] The horizontal direction L2 perpendicular to the central axis O0 of the coffee machine body 2 may be any direction perpendicular to the central axis O0 of the coffee machine body 2 , and the horizontal direction L2 is also the radial direction of the coffee machine body 2 .

[0102] It is worth noting that, in some embodiments, the limiting protrusion 61 is set to be an arc shape. When the coffee cup 6 is put on the coffee machine body 2, the coffee cup 6 is rotated with a little force, so that the limiting protrusion 61 is set to be an arc shape, which facilitates the coffee cup 6 to cross the first limiting stopper 25a.

[0103] In some embodiments, the first limit stopper 25a, the second limit stopper 25b, the third limit stopper 25c and the limit protrusion 61 are all multiple, and one limit protrusion 61 corresponds to one first limit stopper 25a, the second limit stopper 25b and the third limit stopper 25c; the limit protrusion 61 is distributed around the inner wall of the coffee cup 6. By providing multiple first limit stoppers 25a, the second limit stopper 25b, the third limit stopper 25c and the limit protrusion 61, the stability of the coffee cup 6 when connected to the coffee machine body 2 can be enhanced.

[0104] In some embodiments, the third limit stopper 25c extends in a direction away from the second limit stopper 25b toward the first limit stopper 25a to form a guide rail 25c1. By providing the guide rail 25c1, when the coffee cup 6 is sleeved on the coffee machine body 2, the coffee cup 6 is rotated along the first rotation direction C1, and the limit protrusion 61 on the inner wall of the coffee cup 6 slides along the guide rail 25c1 and then slides into the limit cavity 25s, so that the connection between the coffee cup 6 and the coffee machine body 2 is facilitated by the provision of the guide rail 25c1. In some other embodiments, along the central axis O0 direction of the coffee machine body 2, one end of the guide rail 25c1 away from the first limit stopper 25a is tilted in a direction away from the coffee machine body 2, so as to further facilitate the limit protrusion 61 on the inner wall of the coffee cup 6 to enter the limit cavity 25s, that is, to further facilitate the connection between the coffee cup 6 and the coffee machine body 2. In some other embodiments, a guiding inclined surface 25c2 is provided at one end of the guide rail 25c1 away from the first limiting stopper 25a, and the guiding inclined surface 25c2 is used to guide the limiting protrusion 61, so that the guiding inclined surface 25c2 further facilitates the limiting protrusion 61 on the inner wall of the coffee cup 6 to slide along the guiding inclined surface 25c2 and slide along the guide rail 25c1 into the limiting cavity 25s, that is, further facilitates the connection between the coffee cup 6 and the coffee machine body 2.

[0105] It is worth noting that, in some embodiments, along the horizontal direction L2 perpendicular to the central axis O0 of the coffee machine body 2, the coffee machine body 2 is provided with a raised platform 223, the first limit stopper 25a extends to the raised platform 223, the second limit stopper 25b extends to the raised platform 223, and the raised platform 223, the first limit stopper 25a, the second limit stopper 25b and the third limit stopper 25c form the limit cavity 25s. Through this configuration, the first limit stopper 25a extends to the raised platform 223, and the second limit stopper 25b extends to the raised platform 223, that is, there is no narrow gap between the first limit stopper 25a and the raised platform 223, and there is no narrow gap between the second limit stopper 25b and the raised platform 223, which is convenient for cleaning. In some other embodiments, when the coffee cup 6 is connected to the coffee machine body 2, the coffee cup 6 abuts against the raised platform 223. Through this arrangement, the relative position of the coffee cup 6 and the coffee machine body 2 is limited, the coffee cup 6 is prevented from being over-tightened on the coffee machine body 2, and the overall appearance of the portable coffee machine 100 body is beautiful.

[0106] It is worth noting that, in some embodiments, there is an arc portion 62 between the edge of the coffee cup 6 and the inner wall of the coffee cup 6. That is, when the user uses the coffee cup 6 to drink coffee, the skin contacts the arc portion 62, which has a smooth experience, and the user has a good experience when drinking coffee.

[0107] In some other embodiments, the inner wall of the coffee cup 6 is further provided with a flat portion 63, the flat portion 63 is connected to the arc portion 62, and the limiting protrusion 61 is provided on the flat portion 63. By providing the flat portion 63 and the limiting protrusion 61 being provided on the flat portion 63, when the limiting protrusion 61 on the inner wall of the coffee cup 6 is limited in the limiting cavity 25s, the second limiting stopper 25b can abut against the flat portion 63, and the third limiting stopper 25c can abut against the flat portion 63, thereby strengthening the connection between the coffee cup 6 and the coffee machine body 2.

[0108] In some embodiments, the coffee machine body 2 includes a shell 22, and the first limit stopper 25a, the second limit stopper 25b and the third limit stopper 25c can be arranged on the shell 22, and the coffee cup 6 can be detachably connected to the shell 22. That is, the first limit stopper 25a, the second limit stopper 25b and the third limit stopper 25c on the shell 22 can be connected through the limit protrusion 61 on the inner wall of the coffee cup 6. In some other embodiments, the coffee machine body 2 includes the above-mentioned guide seat 25, and the first limit stopper 25a, the second limit stopper 25b and the third limit stopper 25c can be arranged on the guide seat 25, and the coffee cup 6 can be detachably connected to the guide seat 25, that is, the first limit stopper 25a, the second limit stopper 25b and the third limit stopper 25c on the guide seat 25 can be connected through the limit protrusion 61 on the inner wall of the coffee cup 6. As an example, Fig.11 The figure shows that the first limit stopper 25a, the second limit stopper 25b and the third limit stopper 25c are arranged on the guide seat 25. It can be understood that the first limit stopper 25a, the second limit stopper 25b and the third limit stopper 25c are not limited to being arranged only on the housing 22 of the coffee machine body 2 or the guide seat 25 as described above, and can also be in other forms as long as the limit protrusion 61 on the coffee cup 6 can be limited.

[0109] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not used as additional limitations on the content of the present application. The purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the present application; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the present application.

Claims

1. A portable coffee machine, characterized in that: Including water tank, coffee machine body, heater and insulation pad; The water tank is connected to one end of the coffee machine body; A receiving cavity is provided between the water tank and the coffee machine body, and the heater and the heat insulating pad are arranged in the receiving cavity; The heat insulating pad is arranged between the heater and the coffee machine body.

2. The portable coffee machine according to claim 1, characterized in that: The heater is attached to the water tank.

3. The portable coffee machine according to claim 2, characterized in that: The heater includes a heating plate, and the heating plate is overlapped with the thermal insulation pad.

4. The portable coffee machine according to any one of claims 1 to 3, characterized in that: The direction from the heater to the thermal insulation pad is a first direction, and along the first direction, the projected area of ​​the heater is smaller than the projected area of ​​the thermal insulation pad.

5. The portable coffee machine according to claim 1, characterized in that: The water tank comprises an inner box body and an outer box body, the inner box body is provided with a water storage cavity, the accommodating cavity is formed between the inner box body and the coffee machine body, the outer box body is sleeved outside the inner box body, and the outer box body is connected to one end of the coffee machine body.

6. The portable coffee machine according to claim 5, characterized in that: The heater is arranged between the bottom of the inner box and the coffee machine body.

7. The portable coffee machine according to any one of claims 5 or 6, characterized in that: The water tank further comprises an intermediate box body, the intermediate box body is sleeved between the inner box body and the outer box body, the intermediate box body is provided with a support, the heat insulation pad, the heater and the inner box body are sequentially stacked on the support, and there is a receiving space between the heat insulation pad and the coffee machine body; The coffee machine body comprises a circuit board, the accommodation space is used for arranging electronic components on the circuit board, and the accommodation space is used for heat dissipation of the electronic components on the circuit board.

8. The portable coffee machine according to claim 7, characterized in that: The middle box body is provided with a plurality of supporting feet, a plurality of hollow parts are formed between the plurality of supporting feet, the supporting feet are connected to the coffee machine body after passing through the circuit board, and the plurality of hollow parts are communicated with the accommodating space.

9. The portable coffee machine according to claim 1, characterized in that: The portable coffee machine also includes a coffee cup, which is connected to the other end of the coffee machine body.

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