Hand pressure supercharging device and portable coffee machine

Abstract

The utility model provides a hand-pressure supercharging device and a portable coffee machine, and relates to the technical field of coffee machines, the hand-pressure supercharging device comprises a pump body, the pump body comprises a piston cavity and a piston rod slidably arranged in an inner cavity of the piston cavity, a first through hole communicated with the outside is formed in the bottom of the inner cavity of the piston cavity, and the hand-pressure supercharging device further comprises a valve body, the valve body is provided with a matching cavity with an opening in the top, the matching cavity is used for being matched with the piston cavity and communicating with the first through hole, a first feeding port and a first discharging port are formed in the matching cavity, the first discharging port is provided with a first one-way valve structure used for discharging materials outwards, the first feeding port communicates with a buffering cavity, and the buffering cavity is provided with a second one-way valve structure used for buffering materials outwards. And a second feeding opening with an opening in the top is formed in the temporary storage cavity, and the second feeding opening is provided with a second one-way valve structure used for feeding inwards. The hand pressure supercharging device and the portable coffee machine have the advantage of being convenient to assemble.

Description

Technical Field

[0001] The present application relates to the technical field of coffee machines, and in particular to a hand-pressurized booster device and a portable coffee machine. Background Art

[0002] Existing portable hand-pressed coffee machines usually include structures such as a hand pump, a main body, a water storage cup, a lower shell and a coffee cup; the hand pump usually consists of a piston rod, a piston chamber, a one-way water inlet and outlet component, etc. Due to the limitations of product space size and parameters, the one-way water inlet and outlet component is small in size, has many functional components, is relatively complicated to process and assemble, has high cost, and has a high assembly failure rate.

[0003] Improvements are urgently needed to address the above issues. Utility Model Content

[0004] The purpose of the present application is to provide a hand-pressurized booster device and a portable coffee machine, which have the advantage of convenient assembly.

[0005] In a first aspect, the present application provides a hand-pressurized booster device for extracting coffee on a portable coffee machine, and the technical solution is as follows:

[0006] The pump body comprises a pump body, the pump body comprises a piston cavity and a piston rod slidably arranged in the inner cavity of the piston cavity, the inner cavity bottom of the piston cavity is provided with a first through hole communicating with the outside, and further comprises:

[0007] A valve body, wherein the valve body is provided with a matching cavity with a top opening, which is used to match with the piston cavity and communicate with the first through hole; a first feed port and a first discharge port are provided in the matching cavity; the first discharge port is provided with a first one-way valve structure for discharging material outward; the first feed port is connected with a buffer cavity; the buffer cavity is provided with a second feed port with a top opening; the second feed port is provided with a second one-way valve structure for feeding material inward.

[0008] By setting a pump body and a valve body, wherein the pump body includes a piston chamber and a piston rod, and the piston rod moves in the piston chamber to achieve the effect of vacuuming, wherein the valve body is provided with a matching chamber for cooperating with the piston chamber, and the valve body is provided with a first feed port, a second feed port and a first discharge port. When the piston rod moves in the piston chamber to draw a vacuum, the first one-way valve structure of the first discharge port is closed, and the second one-way valve structure of the second feed port is opened, so that external water flows from the second feed port into the buffer chamber, the matching chamber and the piston chamber. When the piston rod moves in the reverse direction, the second one-way valve structure is closed, and the first one-way valve structure is opened. At this time, water flows out from the first discharge port under the squeezing action of the piston rod, and then the coffee in the portable coffee machine is extracted. Through the above-mentioned arrangement, it has the beneficial effect of convenient assembly.

[0009] Further, in the present application, the valve body includes a first valve shell and a second valve shell, the first valve shell is spliced ​​with the second valve shell, the matching chamber is arranged in the first valve shell, the cache chamber is arranged in the second valve shell, the first feed port is arranged on the side of the first valve shell to connect the matching chamber and the cache chamber, the first discharge port is arranged at the bottom of the first valve shell to connect the matching chamber, the second feed port is arranged in the first valve shell to connect the outside and the cache chamber, and a second discharge port corresponding to the first discharge port is opened at the bottom of the second valve shell, and the second discharge port connects the first discharge port and the outside.

[0010] Further, in the present application, a first sealing member is provided between the first valve housing and the second valve housing.

[0011] Further, in the present application, a first protrusion is provided at the bottom of the first valve housing, a first cavity is formed at the first protrusion, the first discharge port is connected with the matching cavity and the first cavity, the first one-way valve structure includes a first plug and a first elastic member, a first limiting portion is provided at one end of the first plug away from the first discharge port, and the first limiting portion is in contact with and matched with the first elastic member;

[0012] The second valve housing is further provided with a second cavity in the buffer cavity for cooperating with the first protrusion, and the second discharge port is arranged in the second cavity.

[0013] Further, in the present application, the first plug includes a first extension section and a second extension section, the first extension section is close to the first discharge port, the second extension section is connected to the first extension section, and the radial dimension of the second extension section is smaller than the radial dimension of the first extension section to form a step structure, the position of the second discharge port corresponds to the position of the second extension section, and the aperture of the second discharge port is larger than the radial dimension of the second extension section.

[0014] Furthermore, in the present application, a second limiting portion is provided on the side of the piston rod, and a third limiting portion (190) and a movable second elastic member (150) are provided in the piston cavity (110), one end of the second elastic member (150) is in contact with and cooperates with the second limiting portion (140), and the other end is in contact with and cooperates with the third limiting portion (190), and the third limiting portion is formed by the inner wall of the piston cavity (110).

[0015] Furthermore, in the present application, a second sealing member is provided between the piston rod and the piston chamber.

[0016] Furthermore, in the present application, the outer surface of the piston chamber is provided with a threaded structure.

[0017] Furthermore, in the present application, a third sealing member is provided between the piston cavity and the matching cavity, and the installation position of the third sealing member (170) is formed by the outer wall of the piston cavity (110).

[0018] In a second aspect, the present application further proposes a portable coffee machine, on which the above-mentioned hand-pressure boosting device is provided.

[0019] As can be seen from the above, the present application provides a hand-pressurized booster device and a portable coffee machine, by setting a pump body and a valve body, wherein the pump body includes a piston chamber and a piston rod, and the piston rod moves in the piston chamber to achieve the effect of vacuuming, wherein the valve body is provided with a matching chamber for cooperating with the piston chamber, and the valve body is provided with a first feed port, a second feed port and a first discharge port. When the piston rod moves in the piston chamber to draw a vacuum, the first one-way valve structure of the first discharge port is closed, and the second one-way valve structure of the second feed port is opened, so that external water flows from the second feed port into the buffer chamber, the matching chamber and the piston chamber. When the piston rod moves in the reverse direction, the second one-way valve structure is closed, and the first one-way valve structure is opened. At this time, water flows out from the first discharge port under the squeezing action of the piston rod, and then the coffee in the portable coffee machine is extracted. Through the above-mentioned arrangement, it has the beneficial effect of convenient assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a hand-pressurized booster device provided in this application.

[0021] Figure 2 This is a schematic diagram of the structure of the valve body provided in this application.

[0022] Figure 3 This is a schematic diagram of the structure of the pump body provided in this application.

[0023] Figure 4 This is a schematic diagram of the structure of the pump body and valve body provided in this application.

[0024] Figure 5 This is a schematic diagram of the structure of a portable coffee machine provided in this application.

[0025] In the figure: 100, pump body; 200, valve body; 300, water storage chamber; 400, extraction chamber; 110, piston chamber; 120, piston rod; 130, first through hole; 140, second limiting part; 150, second elastic member; 160, second sealing member; 170, third sealing member; 180, threaded structure; 190, third limiting member; 210, matching chamber; 220, first feed port; 230, first discharge port; 240, first one-way valve structure; 250, cache chamber; 260, second feed port; 270, second one-way valve structure; 280, first valve shell; 290, second valve shell; 2010, first sealing member; 281, first protrusion; 282, first cavity; 291, second discharge port; 292, second cavity. DETAILED DESCRIPTION

[0026] The technical solutions in the present application will be clearly and completely described below in conjunction with the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0027] 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. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0028] Please refer to Figure 1 , a hand-pressed booster device, used for extracting coffee on a portable coffee machine, the technical solution is as follows:

[0029] The pump body 100 includes a piston chamber 110 and a piston rod 120 slidably disposed in the inner chamber of the piston chamber 110. The inner chamber bottom of the piston chamber 110 is provided with a first through hole 130 communicating with the outside. The pump body 100 also includes:

[0030] The valve body 200 is provided with a matching cavity 210 with a top opening, which is used to cooperate with the piston cavity 110 and is connected with the first through hole 130. A first feed port 220 and a first discharge port 230 are provided in the matching cavity 210. The first discharge port 230 is provided with a first one-way valve structure 240 for discharging material outward. The first feed port 220 is connected with a buffer cavity 250. The buffer cavity 250 is provided with a second feed port 260 with a top opening. The second feed port 260 is provided with a second one-way valve structure 270 for feeding material inward.

[0031] The piston chamber 110 and the piston rod 120 are arranged along the vertical direction, and the piston rod 120 can move along the vertical direction.

[0032] One side of the second feed port 260 is connected to the buffer chamber 250, and the other side is connected to the water storage chamber 300 of the portable coffee machine. When the piston rod 120 moves upward, the piston chamber 110 is evacuated. Since the bottom of the inner cavity of the piston chamber 110 is provided with a first through hole 130, and the piston chamber 110 cooperates with the matching chamber 210 of the valve body 200, the matching chamber 210 is also evacuated. The matching chamber 210 is provided with a first discharge port 230 for discharging materials outward, and the first discharge port 230 is provided with a first one-way valve structure 240. When the matching chamber 210 is evacuated, under the action of pressure, the first one-way valve structure 240 is formed. In the embodiment of the present invention, the first one-way valve structure 240 will block the first discharge port 230. In addition, the matching chamber 210 is also provided with a first feed port 220. The first feed port 220 is connected to the cache chamber 250. The cache chamber 250 is also evacuated. Since the cache chamber 250 is provided with a second feed port 260 with a top opening, the second feed port 260 is provided with a second one-way valve structure 270 for feeding inwardly. When the cache chamber 250 is evacuated, the second one-way valve structure 270 will be opened, so that the external water will fall into the cache chamber 250, the matching chamber 210 and the piston chamber 110 under the action of gravity and suction.

[0033] When the piston rod 120 is pressed and moves downward, the piston rod 120 squeezes the water that falls into the buffer chamber 250, the matching chamber 210 and the piston chamber 110. At this time, the second one-way valve structure 270 will be closed, and the first one-way valve structure 240 will be opened, and the squeezed water will flow out from the first discharge port 230. Usually, the outflowing water will flow into the extraction chamber 400 of the portable coffee machine, and the high-pressure water flow will impact the coffee powder in the extraction chamber 400, thereby completing the extraction to obtain coffee liquid.

[0034] Since the pump body 100 and the valve body 200 are separately provided and can be disassembled and assembled to match, the portability of disassembly and assembly is improved, and the piston chamber 110 has no plug structure, the structure and processing technology are simple, the cost is low, the number of structural parts is small, the assembly is simple, the cost is low, and the reliability is high.

[0035] In summary, by setting the pump body 100 and the valve body 200, wherein the pump body 100 includes a piston chamber 110 and a piston rod 120, and the piston rod 120 moves in the piston chamber 110 to achieve a vacuum effect, wherein the valve body 200 is provided with a matching chamber 210 for matching with the piston chamber 110, and the valve body 200 is provided with a first feed port 220, a second feed port 260 and a first discharge port 230, when the piston rod 120 moves in the piston chamber 110 to draw a vacuum, the first one-way valve of the first discharge port 230 The structure 240 is closed, and the second one-way valve structure 270 of the second feed port 260 is opened, so that external water flows into the buffer chamber 250, the matching chamber 210 and the piston chamber 110 from the second feed port 260. When the piston rod 120 moves in the reverse direction, the second one-way valve structure 270 is closed and the first one-way valve structure 240 is opened. At this time, water flows out from the first discharge port 230 under the squeezing action of the piston rod 120, thereby extracting the coffee in the portable coffee machine. The above arrangement has the beneficial effect of convenient assembly.

[0036] Further, in some embodiments, the valve body 200 includes a first valve shell 280 and a second valve shell 290, the first valve shell 280 and the second valve shell 290 are spliced, the matching chamber 210 is arranged in the first valve shell 280, the buffer chamber 250 is arranged in the second valve shell 290, the first feed port 220 is arranged on the side of the first valve shell 280 to connect the matching chamber 210 and the buffer chamber 250, the first discharge port 230 is arranged at the bottom of the first valve shell 280 to connect the matching chamber 210, the second feed port 260 is arranged in the first valve shell 280 to connect the outside with the buffer chamber 250, and the second discharge port 291 corresponding to the first discharge port 230 is opened at the bottom of the second valve shell 290 to connect the outside.

[0037] The first valve housing 280 and the second valve housing 290 may be snap-fitted together, and the first valve housing 280 is located above the second valve housing 290 , and the two are snap-fitted together up and down.

[0038] Through the above arrangement, the first valve housing 280 and the second valve housing 290 are assembled into the valve body 200, which improves the convenience of disassembly and assembly. Moreover, when one of the components is damaged, it can be easily replaced and maintained without replacing the entire valve body 200, which can effectively reduce the cost of use.

[0039] Furthermore, in some of the embodiments, a first sealing member 2010 is disposed between the first valve housing 280 and the second valve housing 290 .

[0040] The first sealing member 2010 may specifically be a sealing ring.

[0041] By providing the first sealing member 2010 between the first valve housing 280 and the second valve housing 290 , the tightness of the connection between the two is improved.

[0042] Further, in some embodiments, a first protrusion 281 is provided at the bottom of the first valve housing 280, a first cavity 282 is formed in the first protrusion 281, the first discharge port 230 communicates with the matching cavity 210 and the first cavity 282, the first one-way valve structure 240 includes a first plug and a first elastic member, a first limiting portion is provided at one end of the first plug away from the first discharge port 230, and the first limiting portion contacts and cooperates with the first elastic member;

[0043] The second valve housing 290 is further provided with a second cavity 292 in the buffer cavity 250 for cooperating with the first protrusion 281 , and the second discharge port 291 is arranged in the second cavity 292 .

[0044] A first protrusion 281 is provided at the bottom of the first valve housing 280, and a second cavity 292 matching the first protrusion 281 is provided in the second valve housing 290. Through the above arrangement, the first valve housing 280 and the second valve housing 290 can be connected more tightly and stably.

[0045] Among them, the purpose of setting the first protrusion 281 is to set the first cavity 282, and set the first one-way valve structure 240 in the first cavity 282. The first one-way valve structure 240 specifically includes a first plug and a first elastic member. The first elastic member can be specifically a spring. The first plug blocks the first discharge port 230 under the action of the first elastic member. When the water in the matching cavity 210 squeezes the first plug under pressure, and then squeezes the first elastic member, the first elastic member can be compressed and deformed, thereby allowing the first plug to detach from the first discharge port 230. At this time, the first discharge port 230 is in an open state, and water can flow out of the matching cavity 210.

[0046] Furthermore, in some embodiments, the first plug includes a first extension section and a second extension section, the first extension section is close to the first discharge port 230, the second extension section is connected to the first extension section, and the radial dimension of the second extension section is smaller than the radial dimension of the first extension section to form a step structure, the position of the second discharge port 291 corresponds to the position of the second extension section, and the aperture of the second discharge port 291 is larger than the radial dimension of the second extension section.

[0047] The position of the second discharge port 291 corresponds to the position of the second extension section, and the aperture of the second discharge port 291 is larger than the radial dimension of the second extension section, so that when the first plug is opened, the second extension section can enter the second discharge port 291, and at the same time will not block the second discharge port 291, so that the water in the matching cavity 210 can flow out from the second discharge port 291. Through the above arrangement, the size of the overall structure can be effectively reduced, which is conducive to the miniaturization of the equipment and effectively improves the space utilization rate.

[0048] Furthermore, in some embodiments, a second limiting portion 140 is provided on the side of the piston rod 120, a third limiting portion 190 and a movable second elastic member 150 are provided in the piston cavity 110, one end of the second elastic member 150 is in contact with the second limiting portion 140, and the other end is in contact with the third limiting portion 190, and the third limiting portion is formed by the inner wall of the piston cavity (110).

[0049] The second elastic member 150 may specifically be a spring.

[0050] The third limiting portion 190 may be disposed at the bottom of the piston chamber 110 .

[0051] By providing a second limiting portion 140 on the side of the piston rod 120 and then providing a second elastic member 150 in contact with the second limiting portion 140, the purpose is to drive the piston rod 120 to slide upward through the elastic force of the second elastic member 150, thereby achieving the effect of vacuuming to form negative pressure, thereby saving manpower.

[0052] Furthermore, in some of the embodiments, a second sealing member 160 is provided between the piston rod 120 and the piston chamber 110 , and the mounting position of the third sealing member 170 is formed by the outer wall of the piston chamber 110 .

[0053] The second sealing member 160 may specifically be a sealing ring.

[0054] By providing a second sealing member 160 between the piston rod 120 and the piston chamber 110, the sealing performance can be effectively improved. The purpose of improving the sealing performance is to ensure the vacuuming effect as much as possible during the upward sliding process of the piston rod 120.

[0055] Furthermore, in some of the embodiments, a thread structure 180 is provided on the outer surface of the piston chamber 110 .

[0056] By providing a threaded structure 180 on the outer surface of the piston chamber 110, the piston chamber 110 can be conveniently connected and fixed to the portable coffee machine, thereby improving the overall stability.

[0057] Furthermore, in some of the embodiments, a third sealing member 170 is provided between the piston cavity 110 and the mating cavity 210 .

[0058] The third sealing member 170 may specifically be a sealing ring.

[0059] A third seal 170 is provided between the piston chamber 110 and the mating chamber 210 to improve the sealing performance, so as to prevent the water in the mating chamber 210 from escaping from the gap between the piston chamber 110 and the mating chamber 210 when the piston rod 120 slides downward, thereby failing to achieve the purpose of pressurized coffee extraction.

[0060] In a second aspect, the present application further proposes a portable coffee machine, on which the above-mentioned hand-pressurized boosting device is provided.

[0061] Through the above arrangement, the hand-pressing boosting device is arranged on the portable coffee machine, so that the assembly performance of the portable coffee machine can be improved.

[0062] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A hand-pressurized booster device for extracting coffee on a portable coffee machine, comprising a pump body (100), the pump body (100) comprising a piston chamber (110) and a piston rod (120) slidably disposed in the inner cavity of the piston chamber (110), the inner cavity bottom of the piston chamber (110) being provided with a first through hole (130) communicating with the outside, characterized in that: Also includes: A valve body (200), wherein the valve body (200) is provided with a matching cavity (210) with a top opening, which is used to match with the piston cavity (110) and communicate with the first through hole (130); a first feed port (220) and a first discharge port (230) are provided in the matching cavity (210); the first discharge port (230) is provided with a first one-way valve structure (240) for discharging material outward; the first feed port (220) is communicated with a buffer cavity (250); the buffer cavity (250) is provided with a second feed port (260) with a top opening; the second feed port (260) is provided with a second one-way valve structure (270) for feeding material inward.

2. A hand pressure boosting device according to claim 1, characterized in that: The valve body (200) comprises a first valve shell (280) and a second valve shell (290), wherein the first valve shell (280) and the second valve shell (290) are spliced ​​together, the matching chamber (210) is arranged in the first valve shell (280), and the buffer chamber (250) is arranged in the second valve shell (290), the first feed port (220) is arranged on the side of the first valve shell (280) to connect the matching chamber (210) and the buffer chamber (250), the first discharge port (230) is arranged on the bottom of the first valve shell (280) to connect the matching chamber (210), the second feed port (260) is arranged on the first valve shell (280) to connect the outside with the buffer chamber (250), and the second discharge port (291) corresponding to the first discharge port (230) is opened at the bottom of the second valve shell (290), and the second discharge port (291) connects the first discharge port (230) and the outside.

3. A hand pressure boosting device according to claim 2, characterized in that: A first sealing member (2010) is provided between the first valve housing (280) and the second valve housing (290).

4. A hand pressure boosting device according to claim 2, characterized in that: The first valve housing (280) has a first protrusion (281) at the bottom thereof, the first protrusion (281) defines a first cavity (282), the first discharge port (230) communicates with the matching cavity (210) and the first cavity (282), the first one-way valve structure (240) comprises a first plug and a first elastic member, the first plug has a first limiting portion at one end away from the first discharge port (230), and the first limiting portion contacts and cooperates with the first elastic member; The second valve housing (290) is further provided with a second cavity (292) in the buffer cavity (250) for cooperating with the first protrusion (281), and the second discharge port (291) is arranged in the second cavity (292).

5. A hand pressure boosting device according to claim 4, characterized in that: The first plug includes a first extension section and a second extension section, the first extension section is close to the first discharge port (230), the second extension section is connected to the first extension section, and the radial dimension of the second extension section is smaller than the radial dimension of the first extension section to form a stepped structure, the position of the second discharge port (291) corresponds to the position of the second extension section, and the aperture of the second discharge port (291) is larger than the radial dimension of the second extension section.

6. A hand pressure boosting device according to claim 1, characterized in that: A second limiting portion (140) is provided on the side of the piston rod (120), and a third limiting portion (190) and a movable second elastic member (150) are provided in the piston cavity (110). One end of the second elastic member (150) is in contact with and cooperates with the second limiting portion (140), and the other end is in contact with and cooperates with the third limiting portion (190). The third limiting portion is formed by the inner wall of the piston cavity (110).

7. A hand pressure boosting device according to claim 1, characterized in that: A second sealing member (160) is provided between the piston rod (120) and the piston chamber (110).

8. A hand pressure boosting device according to claim 1, characterized in that: The outer surface of the piston chamber (110) is provided with a thread structure (180).

9. The hand pressure boosting device according to claim 1, characterized in that: A third sealing member (170) is provided between the piston cavity (110) and the matching cavity (210), and the installation position of the third sealing member (170) is formed by the outer wall of the piston cavity (110).

10. A portable coffee machine, characterized in that: The portable coffee machine is provided with a hand-pressurized booster device as claimed in any one of claims 1 to 9.

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