WO2019153398A1

WO2019153398A1 - Portable automatic coffee machine

Info

Publication number: WO2019153398A1
Application number: PCT/CN2018/078217
Authority: WO
Inventors: 李毅
Original assignee: 李毅
Priority date: 2018-02-09
Filing date: 2018-03-07
Publication date: 2019-08-15
Also published as: CN108158401A

Abstract

A portable automatic coffee machine. The portable automatic coffee machine comprises a water pressure base body (1) and a brewing base body (2); the brewing base body (2) is provided with an accommodating cavity (21); the accommodating cavity (21) is provided with an outflow channel; the water pressure base body (1) is provided with a liquid storage cavity (11); a valve body is disposed inside the liquid storage cavity (11); the valve body is provided with a valve body channel (41); the upper end of the valve body channel (41) is sealedly separated from the liquid storage cavity (11), and the lower end of the valve body channel (41) is provided with a liquid inlet channel (42) and a liquid outlet channel (43); the liquid inlet channel (42) is communicated with the liquid storage cavity (11) and is provided with a liquid inlet valve (421), and the liquid outlet channel (43) is communicated with the accommodating cavity (21) and is provided with a liquid outlet valve (431); a driving device is provided on the water pressure base body (1); a plunger (44) is connected to the driving device; the plunger (44) extends from the first end of the valve body channel (41) into the valve body channel (41) and reciprocates up and down under the driving of the driving device. According to the portable automatic coffee machine, the plunger (44) can reciprocate up and down in the valve body channel (41) simply by using a low-power driving device, and the required power capacity is also small; the portable automatic coffee machine is convenient to carry, manual pressurization is not required, and pressurization automation is implemented to provide greater convenience for people to use.

Description

Portable automatic coffee machine

Technical field

The present invention relates to a portable automatic coffee machine.

Background technique

Coffee is one of the favorite drinks of human beings. People pursue the quality of coffee and enjoy the concept of coffee. In order to obtain good quality coffee, one way is to ensure the brewing pressure to ensure the production of coffee oil. In order to satisfy this, people It is usually only possible to make coffee using a larger coffee device, but such a coffee device is generally limited to its use in a fixed place, and is not suitable for people to carry with them.

In order to meet the needs of people, some portable coffee machines have been invented, and a portable coffee machine is disclosed in a Chinese patent document (authorization number CN103654412B, the invention name is a portable manual coffee machine). The main component of the pressure generated is the hydraulic power rod (ie, the piston rod), which changes the volume change of the water storage tank by the action of the piston rod on the water storage tank, thereby achieving the purpose of supercharging. However, subject to the structure of the piston rod, when the piston rod moves in the water storage tank, the piston on the piston rod needs to be in constant contact with the inner wall surface of the water storage tank, and a large force is required to operate the piston rod. As a result, the coffee machine can only rely on manual means, and automation (such as electromagnetic driving, etc.) cannot be achieved to achieve the pressurization of the coffee. Unless a high-power electric drive is used to move the piston rod, it is unrealistic for a portable coffee machine to use a large-power electric drive that requires a large volume and weight.

Summary of the invention

It is an object of the present invention to provide a small, portable, automatic coffee machine.

To achieve the above object, the present invention adopts the following technical solutions:

A portable automatic coffee machine comprises a water pressure seat body and a brewing seat body, the brewing seat body has a receiving cavity for accommodating various coffee bags, the receiving cavity has an outflow channel for discharging coffee, and the water pressure seat body has a liquid storage chamber for storing a liquid, a valve body is arranged in the liquid storage chamber, the valve body is provided with a valve body passage, the upper end of the valve body passage is sealed from the liquid storage chamber, and the lower end of the valve body passage is provided with a liquid inlet passage and a liquid outlet passage; the liquid inlet passage communicates with the liquid storage chamber and is provided with an inlet valve for controlling the opening and closing of the liquid inlet passage, and the liquid outlet passage communicates with the receiving chamber and is provided with an outlet valve for controlling the opening and closing of the liquid outlet passage; The base body is provided with a driving device, and the driving device is connected with a plunger. The plunger extends from the first end of the valve body passage into the valve body passage and reciprocates up and down under the driving of the driving device; when the plunger moves downward, the control is advanced. The liquid valve is closed and the outlet valve is opened. When the plunger moves upward, the inlet valve is opened and the outlet valve is closed.

The invention has the advantages that since the plunger structure is adopted, the plunger receives little resistance in the valve body passage, and therefore, only a small power driving device is required, and the plunger can reciprocate up and down in the valve body passage. The driving device used can have a small volume and a small power supply capacity, so that it is not only convenient to carry, but also requires no manual pressure, and the pressure automation is realized, which is more convenient for people to use.

The invention can be improved by the following scheme:

The inlet end of the outflow channel is provided with a first back pressure piece through which the coffee can flow through the outflow channel when the pressure of the receiving chamber reaches a set value.

The first back pressure piece includes a first body, and the first body is provided with a plurality of first through holes penetrating the upper and lower end faces of the first body, and each of the first through holes is arranged in a plurality of rows, and the aperture of the first through hole is The pitch between the first through holes and the distance between the rows and the first through holes depend on the set value at which the pressure of the receiving chamber needs to be reached.

The diameter of the first through hole is not more than 0.25 mm, the distance between the first through holes of the same hole is not less than 2 mm, and the distance between the first through holes between the rows is not less than 2 mm.

The outlet end of the outflow channel is provided with a filter mesh, and the mesh of the filter mesh is a square hole.

A second back pressure piece is further disposed in the outflow channel, the second back pressure piece is disposed between the first back pressure piece and the filter net, the second back pressure piece comprises a second body, and the second body is provided with a through hole a second through hole of the upper and lower end faces of the body, the diameter of the second through hole is not more than 0.5 mm.

The valve body comprises an outer cylinder body and an inner cylinder block, the outer cylinder body has a cylinder inner cavity, the inner cylinder body is installed in the cylinder body cavity from the upper end of the outer cylinder body, and the valve body passage is arranged On the cylinder body, a lower end of the outer cylinder body extends downward to form a mounting portion, and the mounting portion houses a pump head, and the liquid inlet valve and the liquid outlet valve are disposed on the pump head.

The inner cylinder body is fixedly mounted in the cylinder body cavity through a sealing bracket, the upper end surface of the inner cylinder body is provided with a ring groove which is coaxial with the valve body passage, and a Y-shaped sealing ring is arranged in the ring groove, Y type The thickness of the sealing ring gradually increases from the top end to the bottom end, the bottom of the Y-shaped sealing ring is provided with an annular groove, and the bottom of the Y-shaped sealing ring faces the lower end of the inner cylinder body. The special installation of the Y-ring seal not only effectively prevents liquid from leaking from the upper end of the valve body passage, but also further reduces the resistance of the plunger in the valve body passage.

The water pressure seat body and the brewing seat body are detachably connected together, and one end of the water pressure seat body and the brewing seat body is provided with a through hole, and the pump head portion extends into the through hole to make the liquid outlet channel The receiving chamber can be connected, and a spacer for connecting the liquid inlet passage to the liquid storage chamber is disposed between the pump head and the brewing seat.

The hydraulic seat body is provided with a fixing seat, and the fixing seat is provided with a fixing frame; the driving device comprises a plunger tube, a plunger core located in the plunger tube, an electromagnetic coil located outside the plunger tube, and a plunger The magnetic core is connected to the plunger, and the plunger tube is fixedly mounted on the fixing frame. The fixing base is provided with a charging power source and a circuit board. The charging power source is electrically connected to the electromagnetic coil through the circuit board, so that the electromagnetic coil generates a changing magnetic field to push the plunger. a magnetic core; an upper end of the sealing bracket and a lower end of the fixing bracket are butted together by a screw connection.

DRAWINGS

1 is a schematic view showing a three-dimensional state of a portable automatic coffee machine in an embodiment;

2 is a schematic view showing the three-dimensional state of the hydraulic seat body, the brewing seat body and the fixing seat in the embodiment;

3 is a schematic view showing a three-dimensional state of decomposition of a hydraulic seat body in an embodiment;

4 is a schematic view showing a three-dimensional state of decomposition of the brewing seat body in the embodiment;

Figure 5 is a cross-sectional view of the portable automatic coffee machine of the embodiment;

Figure 6 is a schematic enlarged view of I in Figure 5;

Fig. 7 is a schematic enlarged view of II of Fig. 5.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

As shown in FIG. 1 and FIG. 2, a portable automatic coffee machine includes a hydraulic seat body 1 and a brewing seat body 2 that are detachably coupled together, and the water pressure seat body 1 is detachably provided with a fixing seat. 3. The fixing base 3, the hydraulic seat body 1 and the brewing seat body 2 are connected from the top to the bottom and are cylindrical. A space for accommodating the cup is disposed below the brewing base 2, and when the coffee machine discharges the coffee, the cup can be placed in the space to receive the coffee.

As shown in FIG. 3, FIG. 5 and FIG. 6, the hydraulic seat body 1 has a liquid storage chamber 11 for storing a liquid, a valve body is disposed in the liquid storage chamber 11, and the valve body is provided with a valve body passage 41. The upper end of the valve body passage 41 is sealed from the liquid storage chamber 11, and the lower end of the valve body passage 41 is provided with an inlet passage 42 and a liquid outlet passage 43; the inlet passage 42 communicates with the reservoir chamber 11 and is provided to control the inlet passage 42 is connected to the liquid inlet valve 421, the liquid outlet passage 43 communicates with the accommodating chamber 21 described below, and is provided with an outlet valve 431 for controlling the opening and closing of the liquid outlet passage 43; the hydraulic seat body 1 is provided with a driving device, The driving device is connected to a plunger 44. The plunger 44 extends from the first end of the valve body passage 41 into the valve body passage 41 and reciprocates up and down under the driving of the driving device; when the plunger 44 moves downward, the inlet valve 421 is controlled. When the liquid discharge valve 431 is closed and the plunger 44 is moved upward, the liquid inlet valve 421 is opened and the liquid discharge valve 431 is closed.

The valve body includes an outer cylinder 45 and an inner cylinder 46. The outer cylinder 45 has a cylinder bore 451. The inner cylinder 46 is inserted into the cylinder bore 451 from the upper end of the outer cylinder 45. The valve body passage 41 is disposed on the inner cylinder block 46. The lower end of the outer cylinder block 45 extends downward to form a mounting portion 452. The mounting portion 452 houses the pump head 47. The inlet valve 421 and the liquid outlet valve 431 are disposed. On the pump head 47, the structure of the inlet valve 421 and the outlet valve 431 can adopt a common structure, such as the structure shown in Fig. 5 or Fig. 6, which will not be described herein. One end of the hydraulic seat body 1 and the brewing seat body 2 are provided with through holes, and the pump head 47 partially extends into the through holes to enable the liquid outlet passage 43 to communicate with the receiving chamber 21, the pump head 47 and The foaming body 2 is provided with a spacer 12 for allowing the liquid inlet passage 42 to communicate only with the liquid storage chamber 11, and the spacer 12 is mounted to the brewing body 2 via a supporting sealing frame 26.

The inner cylinder block 46 is fixedly mounted in the cylinder cavity 451 through a sealing bracket 31. The upper end surface of the inner cylinder block 46 is provided with a ring groove 461 which is coaxial with the valve body passage 41, and the ring groove 461 is A Y-shaped sealing ring 462 is provided. The thickness of the Y-shaped sealing ring 462 is gradually increased from the top end to the bottom end. The bottom of the Y-shaped sealing ring 462 is provided with an annular groove 463, and the bottom of the Y-shaped sealing ring 462 faces the inner cylinder 46. The lower end.

The fixing base 3 is provided with a fixing frame 32; the driving device comprises a plunger tube, a plunger core 52 located in the plunger tube, an electromagnetic coil located outside the plunger tube, and the plunger core 52 is connected with the plunger 44 The plunger tube is mounted and fixed on the fixing frame 32. The fixing base 3 is provided with a charging power source 61 (preferably a lithium battery) and a circuit board 62. The charging power source 61 is electrically connected to the electromagnetic coil through the circuit board 62 to generate a variable magnetic field of the electromagnetic coil. The plunger core 52 is pushed; the upper end of the sealing bracket 31 and the lower end of the holder 32 are butted together by a screw connection.

Due to the use of the plunger 44 structure, the resistance of the plunger 44 to the valve body passage 41 is extremely small, and in particular, the special mounting of the Y-ring 462 is effective in preventing leakage of liquid from the upper end of the valve body passage 41, and further reducing The resistance of the small plunger 44 in the valve body passage 41, therefore, only requires a lower power driving device (such as the above-mentioned electromagnetic device), and the plunger 44 can reciprocate up and down in the valve body passage 41, and the driving device used The volume can be small and the required power capacity is also small, so that it is not only convenient to carry, but also does not require manual pressure, realizes pressure automation, and is more convenient for people to use.

As shown in FIG. 4, FIG. 5 and FIG. 7, the brewing base 2 is connected to the hydraulic base 1 by means of a screw connection, and the brewing base 2 has a space for accommodating various coffee bags. The accommodating chamber 21 is provided with a coffee powder container 28 in the accommodating chamber 21 for facilitating the placement of the coffee bag. The accommodating chamber 21 has an outflow passage for discharging the coffee, and the inlet end of the outflow passage is provided with a first back pressure piece 22 through which the coffee can flow when the pressure of the accommodating chamber 21 reaches a set value, and the first back pressure sheet 22 passes The back pressure sheet support frame 27 is disposed inside the accommodating chamber 21.

Specifically, the first back pressure piece 22 includes a first body, and the first body is provided with a plurality of first through holes penetrating through the upper and lower end faces of the first body, and the first through holes are arranged in a plurality of rows, the first pass The aperture of the aperture, the aperture between the first through-holes of the peer, and the distance between the row and the first through-hole are determined by the setpoint at which the pressure of the chamber 21 needs to be reached. According to a plurality of tests by the inventors, the diameter of the first through hole is preferably 0.25 mm, and the distance between the row and the row is preferably 2 mm, and the pressure of the accommodating chamber 21 can reach a higher pressure (2 MPa). The coffee oil is ensured to be generated, and the generated coffee can flow through the outflow passage. When the pressure of the accommodating chamber 21 is lower than 2 MPa, the generated coffee cannot smoothly flow through the outflow passage.

The outlet end of the outflow channel is provided with a filter 23, and the mesh of the filter 23 is a square hole. The square hole breaks the surface tension of the liquid so that the coffee does not completely flow out and does not stay on the mesh.

A second back pressure piece 24 is further disposed in the outflow channel, the second back pressure piece 24 is disposed between the first back pressure piece 22 and the filter net 23, and the second back pressure piece 24 includes a second body, the second body A second through hole 241 is formed through the upper and lower end faces of the second body, and the diameter of the second through hole is not more than 0.5 mm. The second back pressure sheet 24 further ensures an increase in the pressure of the accommodating chamber 21.

A third back pressure piece 25 is disposed at a port of the accommodating cavity 21 facing the hydraulic body 1 . The third back pressure piece 25 includes a third body. The third body is provided with a plurality of third through holes penetrating the upper and lower end faces of the third body. Each of the third through holes is arranged in a plurality of rows, the aperture of the first through hole, the pitch between the first through holes of the same and the distance between the row and the first through hole are ensured that the liquid of the liquid outlet channel 43 is constant The pressing does not depend on the third through hole. According to a plurality of tests by the inventors, the diameter of the first through hole does not exceed 0.3 mm, and the liquid passage is ensured when the distance between the first through holes of the same and the distance between the first through holes between the rows is 2 mm. The liquid of 43 does not pass through the third through hole at normal pressure to wet the various coffee bags accommodated in the accommodating chamber 21.

In use, the fixing seat 3 can be separated from the hydraulic seat body 1 together with the valve body, and the liquid storage chamber 11 of the hydraulic seat body 1 is exposed to the outside in order to increase the liquid, and the brewing seat body 2 and the water pressure seat are The body 1 is separated to facilitate replacement of various coffee bags.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and scope of the present invention are equivalent. The manner of replacement is included in the scope of protection of the present invention.

Claims

A portable automatic coffee machine comprises a hydraulic seat body and a brewing seat body, the brewing seat body has a receiving cavity for accommodating various coffee bags, and the receiving cavity has an outflow channel for discharging coffee, characterized in that water The pressure seat body has a liquid storage chamber for storing the liquid, the valve body is provided with a valve body, the valve body is provided with a valve body passage, the upper end of the valve body passage is sealed from the liquid storage chamber, and the lower end of the valve body passage is provided with a liquid inlet passage and a liquid outlet passage; the inlet passage communicates with the liquid storage chamber and is provided with an inlet valve for controlling the opening and closing of the inlet passage, and the outlet passage communicates with the receiving chamber and is provided with a liquid for controlling the opening and closing of the outlet passage a hydraulic device is provided with a driving device, and the driving device is connected with a plunger, and the plunger extends from the first end of the valve body passage into the valve body passage and reciprocates up and down under the driving of the driving device; the plunger is downward When moving, the inlet valve is closed and the outlet valve is opened. When the plunger moves upward, the inlet valve is opened and the outlet valve is closed.
A portable automatic coffee machine according to claim 1, wherein the inlet end of the outflow passage is provided with a first back pressure piece through which the coffee can flow through the outflow passage when the pressure of the accommodation chamber reaches a set value.
The portable automatic coffee machine according to claim 2, wherein the first back pressure piece comprises a first body, and the first body is provided with a plurality of first through holes penetrating the upper and lower end faces of the first body, each of The first through holes are arranged in a plurality of rows, the aperture of the first through hole, the pitch between the first through holes of the same and the distance between the row and the first through hole according to the pressure of the receiving cavity need to reach a set value. set.
A portable automatic coffee machine according to claim 3, wherein said first through hole has a diameter of not more than 0.25 mm, and a pitch between said first through holes is not less than 2 mm, between rows and rows. The distance of the first through hole is not less than 2 mm.
A portable automatic coffee machine according to claim 2, wherein the outlet end of the outflow channel is provided with a filter mesh, and the mesh of the filter mesh is a square hole.
A portable automatic coffee machine according to claim 5, wherein a second back pressure piece is disposed in the outflow channel, and the second back pressure piece is disposed between the first back pressure piece and the filter net, The second back pressure piece includes a second body, and the second body is provided with a second through hole penetrating through the upper and lower end faces of the second body, and the diameter of the second through hole is not more than 0.5 mm.
A portable automatic coffee machine according to any one of claims 1 to 6, wherein the valve body comprises an outer cylinder body and an inner cylinder block, the outer cylinder body has a cylinder inner cavity, The inner cylinder body is installed in the cylinder inner cavity from the upper end of the outer cylinder body, the valve body passage is disposed on the inner cylinder body, the lower end of the outer cylinder body extends downward to form a mounting portion, and the mounting portion houses the pump head The inlet valve and the outlet valve are disposed on the pump head.
A portable automatic coffee machine according to claim 7, wherein the inner cylinder is fixedly mounted in the cylinder chamber through a sealing bracket, and the upper end surface of the inner cylinder is provided with the valve body passage The ring groove of the central shaft is provided with a Y-shaped sealing ring. The thickness of the Y-shaped sealing ring is gradually increased from the top end to the bottom end, and the bottom of the Y-shaped sealing ring is provided with an annular groove, and the bottom of the Y-shaped sealing ring faces The lower end of the inner cylinder.
The portable automatic coffee machine according to claim 8, wherein the water pressure seat body and the brewing seat body are detachably connected, and one end of the water pressure seat body and the brewing seat body are provided with a through hole, the pump head portion extends into the through hole to enable the liquid outlet passage to communicate with the receiving cavity, and a spacer for connecting the liquid inlet passage to the liquid storage chamber is provided between the pump head and the brewing seat body
A portable automatic coffee machine according to claim 8, wherein the hydraulic seat body is provided with a fixing seat, and the fixing seat is provided with a fixing frame; the driving device comprises a plunger tube and is located at the plunger a plunger core in the tube, an electromagnetic coil located outside the plunger tube, the plunger core is connected to the plunger, and the plunger tube is fixedly mounted on the fixing frame, the fixing base is provided with a charging power source and a circuit board, and the charging power source Electrical connection between the circuit board and the electromagnetic coil causes the electromagnetic coil to generate a varying magnetic field to push the plunger core; the upper end of the sealing bracket and the lower end of the fixing bracket are butted together by a screw connection.