阅读说明：本技术 一种咖啡机 (Coffee machine ) 是由 郑昕彤 于 2019-09-30 设计创作，主要内容包括：本发明属于冲泡咖啡设备技术领域,公开了一种咖啡机,包括壳体、电机、直线往复机构、活塞体、压缩缸、咖啡粉盒；电机设置在壳体上,电机的输出轴与直线往复机构的一端连接,活塞体的顶部与直线往复机构的另一端连接；活塞体设置在压缩缸的压缩腔内,直线往复机构使活塞体沿压缩缸的内壁直线运动,使压缩缸的体积发生变化,达到压缩的目的；压缩缸的中下部设置有进水孔,咖啡粉盒可拆卸地设置在压缩缸的下部,咖啡粉盒的底部设置有过滤网。本申请的咖啡机结构简单、制造成本低、体积小、噪声小、微振动、便于清洗和维护；通过单次压缩即可满足制作咖啡的水压要求,大大缩短咖啡的单次制作时间,提高咖啡机的利用率。(The invention belongs to the technical field of coffee brewing equipment, and discloses a coffee machine, which comprises a shell, a motor, a linear reciprocating mechanism, a piston body, a compression cylinder and a coffee powder box, wherein the piston body is provided with a piston; the motor is arranged on the shell, an output shaft of the motor is connected with one end of the linear reciprocating mechanism, and the top of the piston body is connected with the other end of the linear reciprocating mechanism; the piston body is arranged in a compression cavity of the compression cylinder, and the linear reciprocating mechanism enables the piston body to move linearly along the inner wall of the compression cylinder, so that the volume of the compression cylinder is changed, and the purpose of compression is achieved; the well lower part of compression cylinder is provided with the inlet opening, and coffee powder box detachably sets up in the lower part of compression cylinder, and the bottom of coffee powder box is provided with the filter screen. The coffee machine has the advantages of simple structure, low manufacturing cost, small volume, low noise, micro vibration and convenience in cleaning and maintenance; the water pressure requirement for making coffee can be met through single compression, the single making time of coffee is greatly shortened, and the utilization rate of the coffee maker is improved.)

1. A coffee machine is characterized by comprising a shell, a motor, a linear reciprocating mechanism, a piston body, a compression cylinder and a coffee powder box;

the motor is arranged on the shell, an output shaft of the motor is connected with one end of the linear reciprocating mechanism, and the top of the piston body is connected with the other end of the linear reciprocating mechanism; the piston body is arranged in a compression cavity of the compression cylinder, and the linear reciprocating mechanism enables the piston body to move linearly along the inner wall of the compression cylinder, so that the volume of the compression cylinder is changed, and the purpose of compression is achieved; the well lower part of compression cylinder is provided with the inlet opening, and coffee powder box detachably sets up in the lower part of compression cylinder, and the bottom of coffee powder box is provided with the filter screen.

2. The coffee machine of claim 1, wherein the linear reciprocating mechanism is a screw mechanism, the screw mechanism comprises a screw and a screw nut, the screw is screwed with the screw nut, the piston body is provided with an accommodating cavity, the accommodating cavity can accommodate the screw, one end of the screw is connected with an output shaft of the motor, the screw nut is connected with the top of the piston body, and the linear reciprocating motion of the piston body is realized through the forward and reverse rotation of the motor.

3. A coffee machine according to claim 2, characterized in that the output shaft of the motor is connected to the screw via a torque converter mechanism.

4. The coffee machine of claim 1, wherein the piston body is provided with a vent hole at an end surface of the top portion thereof or a side wall thereof adjacent to the upper portion thereof, the vent hole being in communication with the outside.

5. The coffee maker of claim 1 wherein the removable connection of the coffee compact to the lower portion of the compression cylinder is a threaded or snap connection.

6. Coffee machine according to claim 1, characterized in that the head of the piston body is provided with a food-grade and temperature-resistant silicone sealing ring.

7. A coffee machine according to claim 1, characterized in that the filter screen is of stainless steel.

8. The coffee maker of claim 1, further comprising a filter paper, the filter paper being placed on the filter screen.

9. The coffee machine of claim 1, wherein a sealing mechanism is further disposed between the connection of the coffee compact and the compression cylinder to improve the sealing of the compression cylinder.

Technical Field

The invention relates to the technical field of coffee brewing equipment, in particular to a coffee machine.

Background

In the prior art, 9 atmospheres of pressure are used for making espresso, and in the water path system of the coffee machine, the heated softened water is delivered into the brewing device by an electromagnetic vibration pump or a vane pump.

The low-end coffee machine generally adopts a vibration pump, the vibration pump adopts an electromagnetic coil and a return spring to enable a piston to move, the reciprocating motion compression purpose of the piston is realized, and the purpose of increasing the extraction pressure is achieved.

The high-end coffee machine adopts a rotary vane pump, and when a rotor of the vane pump rotates, a tip part of a vane clings to the inner surface of a stator under the action of centrifugal force and water. The working volume formed by the two blades, the rotor and the inner surface of the stator firstly absorbs water from small to large and then discharges water from large to small, and the blades rotate for one circle to finish one-time water absorption and water discharge.

Therefore, there is a need in the art for a coffee maker that solves the above-mentioned problems.

Disclosure of Invention

The coffee machine aims to solve the problems that in the prior art, a coffee machine adopting a vibration pump is high in vibration noise, serious in electromagnetic heat generation, low in efficiency and unstable in pressure output, and needs to work intermittently; the invention provides a coffee machine, which comprises a shell, a motor, a linear reciprocating mechanism, a piston body, a compression cylinder and a coffee powder box, wherein the shell is provided with a piston body; the motor is arranged on the shell, an output shaft of the motor is connected with one end of the linear reciprocating mechanism, and the top of the piston body is connected with the other end of the linear reciprocating mechanism; the piston body is arranged in a compression cavity of the compression cylinder, and the linear reciprocating mechanism enables the piston body to move linearly along the inner wall of the compression cylinder, so that the volume of the compression cylinder is changed, and the purpose of compression is achieved; the well lower part of compression cylinder is provided with the inlet opening, and coffee powder box detachably sets up in the lower part of compression cylinder, and the bottom of coffee powder box is provided with the filter screen.

In the preferred technical scheme of the coffee machine, the linear reciprocating mechanism is a screw rod mechanism, the screw rod mechanism comprises a screw rod and a screw rod nut, the screw rod is screwed with the screw rod nut, the piston body is provided with an accommodating cavity, the accommodating cavity can accommodate the screw rod, one end of the screw rod is connected with an output shaft of the motor, the screw rod nut is connected with the top of the piston body, and the linear reciprocating motion of the piston body is realized through the positive and negative rotation of the motor.

In the preferred technical scheme of the coffee machine, the output shaft of the motor is connected with the screw rod through the torque converting mechanism.

In the preferred technical scheme of the coffee machine, the end surface of the top of the piston body or the side wall close to the upper part is provided with the exhaust hole, and the exhaust hole is communicated with the outside.

In the preferred technical scheme of the coffee machine, the detachable connection mode of the coffee powder box and the lower part of the compression cylinder is threaded or buckled.

In the preferred technical scheme of above-mentioned coffee machine, the head of piston body is provided with food level and high temperature resistant silica gel sealing washer.

In the preferred technical scheme of the coffee maker, the filter screen is made of stainless steel.

In the preferred technical scheme of the coffee machine, the coffee machine further comprises filter paper, and the filter paper is placed on the filter screen.

In the preferred technical scheme of the coffee machine, a sealing mechanism is further arranged between the connection part of the coffee powder box and the compression cylinder, so that the sealing performance of the compression cylinder is improved.

It will be appreciated by those skilled in the art that in the preferred embodiment of the coffee maker of the present invention, the coffee maker does not need to continuously produce hot water at high pressure, as compared to a coffee maker using a vibrating pump or a vane pump, which pushes water toward the water outlet end by a continuous motion, creates pressure at the water outlet end, and creates a continuous water outlet until the water inlet end stops feeding water, but the coffee is compressed cup by cup; the coffee machine has the advantages of simple structure, low manufacturing cost, small volume, low noise, micro vibration and convenience in cleaning and maintenance; the water pressure requirement for making coffee can be met through single compression, and the single making time of coffee is greatly shortened.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of one embodiment of a coffee maker of the present invention;

reference numerals: 1. a motor; 2. a lead screw; 3. an exhaust hole; 4. a piston body; 5. a compression cylinder; 6. a water inlet hole; 7. a lower portion of the piston body; 8. a compression chamber; 9. a gasket; 10. threads or snaps; 11. a coffee powder box; 12. filtering paper; 13. a filter screen; 14. coffee powder; 15. a housing; 16. a lead screw nut; 17. a receiving cavity.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "in", "upper", "lower", "lateral", "inner", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Based on the background technology, the existing coffee machine adopting the vibrating pump has the disadvantages of large vibrating noise, serious electromagnetic heat generation, intermittent work, low efficiency and unstable pressure output; the coffee machine adopting the vane pump has the problems of complex structure and high manufacturing cost, and has the advantages of simple structure, low manufacturing cost, small volume, low noise, micro vibration and convenient cleaning and maintenance; the water pressure requirement for making coffee can be met through single compression, and the single making time of coffee is greatly shortened.

Specifically, as shown in fig. 1, the present invention provides a coffee machine, which comprises a housing 15 (only a part of the housing 15 is shown in fig. 1), a motor 1, a linear reciprocating mechanism, a piston body 4, a compression cylinder 5, a coffee powder box 11; the motor 1 is arranged on the shell 15, the motor 1 can be directly and fixedly arranged on the shell 15, or can be fixed on a motor 1 fixing frame through the motor 1, the fixing frame of the motor 1 is fixedly connected with the shell 15, an output shaft of the motor 1 is connected with one end of the linear reciprocating mechanism, the output shaft of the motor 1 can be directly connected with one end of the linear reciprocating mechanism, or the output shaft of the motor 1 is connected with one end of the linear reciprocating mechanism through a coupler, and the top of the piston body 4 is connected with the other end of the linear reciprocating mechanism; the piston body 4 is arranged in a compression cavity 8 of the compression cylinder 5, and the linear reciprocating mechanism enables the piston body 4 to move linearly along the inner wall of the compression cylinder 5, so that the volume of the compression cylinder 5 is changed, and the purpose of compression is achieved; the middle-lower part of the compression cylinder 5 is provided with a water inlet hole 6, the coffee powder box 11 is detachably arranged at the lower part of the compression cylinder 5 (can be in threaded connection, can also be in snap connection, and can also be in other connection modes), and the bottom of the coffee powder box 11 is provided with a filter screen 13. In the present invention, the motor 1 may be a dc motor, an ac motor, a servo motor, or a stepping motor, and the change of the type of the motor 1 by those skilled in the art should be limited within the protection scope of the present invention. The shape of the water inlet hole 6 can be round or other shapes. The linear reciprocating mechanism may be a screw 2 mechanism, or other linear reciprocating mechanisms, as long as the linear reciprocating mechanism can convert the rotation motion of the motor 1 into a linear motion, and those skilled in the art should be limited within the scope of the present invention. The coffee powder cartridge 11 is circular to facilitate connection with the lower portion of the compression cylinder 5.

Preferably, as shown in fig. 1, the linear reciprocating mechanism is a lead screw 2 mechanism, the lead screw 2 mechanism includes a lead screw 2 and a lead screw nut 16, the lead screw 2 is screwed with the lead screw nut 16, the piston body 4 is provided with an accommodating cavity 17, the accommodating cavity 17 can accommodate the lead screw 2, one end of the lead screw 2 is connected with an output shaft of the motor 1, the lead screw nut 16 is arranged on the top of the piston body 4, and the linear reciprocating motion of the piston body 4 is realized through the forward and reverse rotation of the motor 1. The accommodating cavity 17 is mainly used for accommodating the lead screw 2, the shape of the accommodating cavity 17 may be circular or other shapes, as long as the accommodating cavity 17 can accommodate the lead screw 2, the shape of the accommodating cavity 17 is not particularly limited, and the change of the shape of the accommodating cavity 17 by those skilled in the art should be limited within the protection scope of the present invention.

Preferably, the output shaft of the motor 1 is connected with the screw rod 2 through a torque conversion mechanism.

Preferably, as shown in fig. 1, the maximum depth of the piston body 4 entering the compression cylinder 5 is less than the maximum depth of the compression chamber 8, so that even if the piston body 4 is fully advanced into the compression chamber 8, the lower part 7 of the piston body 4 is not in contact with the coffee powder 14 in the coffee powder box 11, and the lower part 7 of the piston body 4 is always in a non-contact state with the coffee powder 14, and the water can be fully pressed out during the compression process.

Preferably, as shown in fig. 1, the end surface of the top of the piston body 4 or the side wall near the upper part is provided with a vent hole 3, the vent hole 3 is communicated with the outside, the shape of the vent hole 3 can be round, square or other shapes, and the shape of the vent hole 3 can be changed by those skilled in the art and should be limited within the protection scope of the present invention.

Preferably, the coffee powder box 11 is detachably connected with the lower part of the compression cylinder 5 by a screw thread or a snap 10, i.e. the connection between the coffee powder box 11 and the lower part of the compression cylinder 5 can be a screw thread or a snap connection. If threaded connection, the outer side wall of the joint of the coffee powder box 11 can be provided with an external thread, the inner side wall of the joint of the compression cylinder 5 is provided with an internal thread, and the tight connection between the coffee powder box 11 and the compression cylinder 5 is realized through the matching of the internal thread and the external thread. If the connection is a buckle connection, the buckle comprises a first buckle and a second buckle, the first buckle is arranged at the upper end of the coffee powder box 11, the second buckle is arranged at the compression cylinder 5 and can be clamped with the second buckle through the first buckle, the tight connection at the connection position of the coffee powder box 11 and the compression cylinder 5 is realized, the first buckle and the second buckle adopt the structure in the prior art, and the description is omitted.

Preferably, as shown in fig. 1, the lower part 7 of the piston body 4 is provided with a food-grade and high-temperature-resistant silica gel sealing ring, and more preferably, food-grade silica gel with 150 ℃ heat resistance is selected, and the silica gel is anti-aging and wear-resistant.

Preferably, as shown in fig. 1, a filter screen 13 is laid on the bottom of the coffee powder box 11, the material of the filter screen 13 may be a metal material or a non-metal material, and a person skilled in the art should limit the change of the material of the filter screen 13 within the protection scope of the present invention.

Preferably, the filter screen 13 of the present invention is a stainless steel filter screen.

Preferably, the coffee machine further comprises a filter paper 12, the filter paper 12 being placed on a sieve 13.

Preferably, as shown in FIG. 1, the filter paper 12 is a disposable filter paper.

Preferably, the filter paper 12 is shaped like a cup, the filter paper 12 is shaped like a cone and is placed in the coffee powder box 11, after the filter paper 12 is wetted by water, resistance is formed on the passing coffee liquid, pressure is formed in the compression chamber 8, the filter paper has the function of filtering coffee grounds, and after the compression is finished, the whole coffee grounds in the coffee powder box 11 and the filter paper 12 can be thrown away together, so that the coffee powder box 11 is not polluted.

Preferably, as shown in fig. 1, a sealing mechanism is further disposed between the connection between the coffee powder box 11 and the compression cylinder 5 to improve the sealing performance of the compression cylinder 5. The sealing mechanism can be a sealing gasket 9 or other sealing mechanisms, in the invention, the sealing mechanism is the sealing gasket 9, the sealing gasket 9 has simple structure, low cost and better sealing effect, more preferably, the material of the sealing gasket 9 is food-grade fluorine glue, and the sealing gasket 9 can resist heat of 250 ℃, oil and aging.

The coffee machine of the invention has the working process that:

laying filter paper 12 in a container of coffee powder 14, grinding the coffee into powder and adding the powder; the coffee powder cartridge 11 is connected to the compression cylinder 5 by a screw or snap 10 and ensures that water and coffee do not spill. Softened water gets into compression chamber 8 through inlet opening 6 after heating (about 85 degrees), it is rotatory that motor 1 is rotatory to drive the lead screw, promote piston body 4 downstream then, piston body 4 surpasss behind the inlet opening 6 positions, compression process begins, the air in the compression chamber 8 is compressed, nevertheless leave one section air in the compression chamber 8 all the time, can guarantee like this that water is whole to pass through coffee powder 14, and can not leave surplus moisture in the compression chamber 8, also can guarantee that piston body 4 seals the head and be in clean state all the time, do not contact with coffee powder 14, do not polluted by coffee powder 14. When the compression chamber 8 reaches a certain pressure, the torque force of the motor 1 keeps unchanged, and in the time, the water and part of the air in the compression chamber 8 sequentially pass through the filter paper 12, the filter screen 13 and the coffee powder box 11, and the compression process is finished. Then the motor 1 rotates in reverse direction, the piston body 4 is retracted to the initial position, and the motor 1 stops moving. Finally, the coffee powder cartridge 11 is removed and the filter paper 12 is removed together with the coffee grounds.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.