KR101716316B1 - Coffee Brewing Machine Using Centrifugal Force - Google Patents

Abstract

The present invention relates to a coffee liquid extracting device using centrifugal force. The coffee liquid extracting device of the present invention comprises: a fixing case having a penetration hole longitudinally penetrated in the center thereof; a raw ingredient supplying member inserted in and installed through the penetration hole of the fixing case, and having a flow pathway for feeding coffee powder and hot water; a stator including cores formed on the fixing case at constant intervals along the circumferential direction thereof, and including a coil wound on the cores and having electrical power applied thereto; a rotation case installed at the bottom side of the fixing case to be rotated with respect to the fixing case, including a filter accommodation space communicating with the penetration hole of the fixing case, and including an extraction hole penetrated therein to have one end communicating with the filter accommodation space and the other end communicating with the outside; a mixing member installed in the filter accommodation space of the rotation case, including a feeding part communicating with the flow pathway of the raw ingredient supplying member, and including a mixing unit having a top surface communicating with the bottom of the feeding part and disposed in the filter accommodation space with an opened side surface part formed in a cylindrical shape to accommodate coffee powder and hot water fed through the feeding part; and a filter installed between the side surface part of the mixing unit and the extraction hole in the filter accommodation space of the rotation case, and allowing only a liquid to pass therethrough without allowing coffee powder to pass therethrough.

Description

{Coffee Brewing Machine Using Centrifugal Force}

More particularly, the present invention relates to a coffee liquid extracting apparatus, and more particularly, to a coffee liquid extracting apparatus which comprises a case in which coffee powder and hot water are put into a case and the case is rotated at a high speed by an electromagnetic force generated between a stator and a permanent magnet of a rotor, To a coffee liquid extracting apparatus using centrifugal force.

Generally, in the coffee shop or home, a method of extracting coffee beans using coffee bean powder is a pressurizing method called an espresso and a drip method commonly extracted in the home.

The pressurizing method is a method of extracting a coffee bean liquid by applying pressure to a machine, and can extract a large amount of coffee beans in a short time, but there is a problem that a precipitate is generated. The drip method is a method of putting powdered coffee into an ordinary paper filter and extracting the coffee bean liquid flowing naturally by dropping water from above.

When the coffee is extracted by the conventional pressurization method or drip method, the residence time of the hot water tends to be excessively long. Therefore, components (for example, a bitter component) that compromises the flavor of the coffee powder are also extracted, There is a possibility of damage.

Korean Patent Laid-Open Publication No. 1990-0007373 discloses a centrifugal extracting type coffee liquid extracting apparatus which introduces hot water into a container containing coffee powder and rotates the container at a high speed by using a motor to generate centrifugal force, A method in which coffee powder pressed through an inner filter net is passed through to extract a coffee liquor so that the coffee liquor has a softer flavor is also used.

However, in the conventional coffee liquid extracting apparatus for extracting the coffee liquid using the centrifugal force, the axis of the motor is directly connected to the container into which the coffee powder is inputted or indirectly connected through the power transmitting mechanism such as a pulley and a belt Therefore, there is a problem in that there is a problem of hygiene because it is impossible or difficult to separate the container from the container, and a structure is required to prevent the coffee powder and the hot water from scattering to the outside during centrifugal extraction.

US registered patent US4962693 Korean Patent No. 10-1618383 Korean Patent Publication No. 1990-0007373

An object of the present invention is to provide a stator having a coil to which electricity is applied to a stationary case fixed to a main body, The rotating case is rotated at a high speed by the electromagnetic force generated between the stator and the permanent magnet by arranging the permanent magnets to be viewed along the circumferential direction so that the coffee liquid can be extracted by the centrifugal force, And to provide a coffee liquid extracting apparatus using centrifugal force which can simplify the entire structure and can be controlled in various ways by rotation control.

According to an aspect of the present invention, there is provided a coffee liquid extracting apparatus comprising: a stationary case having a through-hole penetrating vertically; A raw material supply member inserted through the through hole of the fixed case and having a flow path for supplying coffee powder and hot water; A stator having a core formed at regular intervals along the circumferential direction in the fixed case, and a coil wound around the core and being supplied with power; And a filter accommodating space communicating with the through hole of the fixing case, the filter accommodating space having one end communicating with the filter accommodating space and the other end communicating with the outside, A rotary case having an extraction port formed therethrough; A permanent magnet installed in the rotary case so as to face the stator and generating an electromagnetic force together with the stator to cause rotational motion of the rotary case; A feed portion provided in the filter accommodating space of the rotary case and communicating with the flow path of the raw material supply member and a cylindrical portion having an upper surface communicated with the lower portion of the charging portion and an open side portion, A mixing member having a mixing portion for receiving coffee powder and hot water introduced through the introduction portion; And a filter installed between the side surface of the mixing unit and the extraction port in the filter accommodating space of the rotary case and allowing only the liquid to pass without passing the coffee powder.

According to the present invention, there is provided a stator having a coil to which electricity is applied to a stationary case, wherein a permanent magnet facing the stator is arranged in a circumferential direction in a rotary case into which coffee powder is introduced, The rotating case rotates at a high speed by the electromagnetic force, and the coffee liquid can be extracted by the centrifugal force.

Therefore, the rotary case can be easily separated and cleaned from the fixed case, and the entire structure can be simplified.

In addition, since the rotation case can be rotated forward and backward by controlling the power applied to the coil, and the rotation speed can be easily controlled, the rotation can be controlled in various ways when extracting coffee.

In particular, since the rotating case can be stopped by using an electric brake between the stator and the permanent magnet, there is an effect that safety can be prevented by stopping the rotating case safely in an emergency situation.

1 and 2 are sectional views of a coffee liquid extracting apparatus according to an embodiment of the present invention. FIG. 1 shows a state of extracting coffee liquid, FIG. 2 shows a state of discharging coffee powder residue to the outside after extracting coffee liquid .
Fig. 3 is a cross-sectional view showing the coffee-liquid extracting apparatus of Fig. 1 in an exploded state.
Fig. 4 is a cross-sectional view of the second rotating case and the mixing member of the coffee-liquid extracting apparatus of Fig.
5 is a plan view and a side view showing an example of a dispersing member of the coffee-liquid extracting apparatus of Fig. 1;
Fig. 6 is a plan view and a side view showing another example of the dispersing member of the coffee-liquid extracting apparatus of Fig. 1;
7 is a view showing a state in which a cock is additionally mounted on an extraction port of the coffee liquid extracting apparatus of FIG.
FIG. 8 is a view showing a front view, a side view, and a rear view of the cock applied to FIG.
Fig. 9 is a view showing a modified example in which the rotating case of the coffee-liquid extracting apparatus of Fig. 1 is integrated.
10 and 11 are sectional views of a coffee liquid extracting apparatus according to another embodiment of the present invention, FIG. 10 shows a state of extracting coffee liquid, FIG. 11 shows a state of discharging coffee powder residue to the outside after extracting coffee liquid .
12 is an exploded cross-sectional view of a part of the coffee liquid extracting apparatus of Fig.
FIG. 13 is a cutaway perspective view of a main part of a coffee liquid extracting apparatus according to another embodiment of the present invention. FIG.
14 is a perspective view showing a buffer unit of the coffee-liquid extracting apparatus shown in Fig.
15 is a cross-sectional view of the buffer unit shown in Fig.
16 is a perspective view of the buffer member constituting the buffer unit shown in Fig. 14 as viewed from below.
Fig. 17 is a sectional view of the main portion for explaining an operation example of the buffer unit of the coffee-liquid extracting apparatus shown in Fig. 13;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a coffee liquid extracting apparatus using centrifugal force according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 8, a coffee liquid extracting apparatus according to an embodiment of the present invention includes: a stationary case 10 having a through hole 11 vertically passing through the center thereof; A raw material supply member 40 inserted through the through hole 11 of the fixed case 10 and having a flow path 40a into which coffee powder and hot water are introduced; A stator 20 including a core 21 formed at predetermined intervals along the circumferential direction of the fixed case 10 and a coil 22 wound around the core 21 and receiving power; And a filter accommodating space (32a) rotatably provided on the lower side of the fixed case (10) with respect to the fixed case (10) and communicating with the through hole (11) of the fixed case (10) A rotary case 30 communicating with the filter accommodating space 32a and having an extraction port 33 communicating with the outside at the other end to penetrate therethrough; A permanent magnet (25) installed in the rotary case (30) so as to face the stator (20); A charging part 51 provided in the filter accommodating space 32a of the rotary case 30 and communicating with the flow path 40a of the raw material supplying member 40; And a mixing part (52) disposed in the filter accommodating space (32a) and communicating with the inlet part (51) and receiving the coffee powder and the hot water introduced through the introducing part (51) 50); A filter 60 is provided on the side surface of the filter accommodating space 32a of the rotary case 30 so as to close the side surface of the mixing part 52 and allows only the fluid (coffee liquid) to pass without passing the coffee powder. .

The stationary case 10 has a cylindrical shape with a through hole 11 vertically passing through the center thereof, and is fixed to the main body of the coffee liquid extracting apparatus. A ring-shaped stator bracket 14 is installed in the lower portion of the fixed case 10 along the circumferential direction. The stator bracket 14 is fixed to the stator 20.

The stator 20 includes a core 21 of a conductive material disposed at a predetermined interval in the stator bracket 14 and a coil 22 of a conductive metal material wound on the core 21 and being supplied with power .

The rotary case 30 includes a first rotary case 31 having a ring shape and having the permanent magnet 25 fixed on the outer circumferential surface thereof and a second rotary case 31 detachably attached to the lower side of the first rotary case 31 by a clamp 35. [ And a second rotary case (32) which is coupled to the filter housing space (32a).

The permanent magnets 25 provided in the first rotary case 31 are arranged at regular intervals along the circumferential direction and alternately arranged with different polarities to form the first rotary case 31 together with the stator 20, Thereby generating an electromagnetic force for rotating the rotor.

A bearing 15 is provided between the inner peripheral surface of the first rotary case 31 and the fixed case 10 so that the first rotary case 31 can rotate smoothly with respect to the fixed case 10. The first rotary case 31 and the second rotary case 32 may be formed integrally without being separated from each other. A coupling groove 37 is formed in the lower portion of the outer circumference of the first rotary case 31 to engage with the upper end of the clamp 35. In this embodiment, the clamp 35 is rotatably installed at the upper part of the outer circumferential surface of the second rotary case 32, and the upper end of the clamp 35 is bent in a " do. The lower end of the clamp 35 is elastically supported by the spring 36 so that the upper end of the clamp 35 remains tightly coupled to the inside of the coupling groove 37 in the state where no external force is applied.

The second rotary case 32 has a ring shape having an opening 31a at a central portion thereof and a conical skirt portion 34 for facilitating the discharge of the coffee powder when the coffee powder is discharged to the outside, Respectively. In addition, on one side of the second rotary case 32, an extraction port 33 for extracting the coffee liquid to the outside is formed in a lateral direction. The extraction port 33 has an inner end communicating with the filter accommodating space 32a and an outer end communicating with the outside. One or more extraction ports 33 may be formed, but a plurality of extraction ports 33 may be formed at regular intervals along the circumferential direction of the second rotary case 32. The plurality of extraction ports 33 are connected to each other by an extraction guide channel 33a formed in a ring shape on the inner surface of the filter accommodating space 32a.

A plurality of guide grooves 31b are vertically guided in the opening 31a by inserting a plurality of guide protrusions 51a extending upward in the upward direction on the outer surface of the insertion portion 51 of the mixing member 50, As shown in FIG.

The filter 60 is installed inside the filter accommodating space 32a of the second rotary case 32. [ The filter 60 is formed of a ring-shaped network or a porous body and filter paper, and is installed along the inner circumferential surface of the filter accommodating space 32a so that only the liquid, that is, the coffee liquid is passed without passing the coffee powder.

The raw material supply member 40 is for supplying coffee powder and hot water to the inside of the mixing member 50. The raw material supply member 40 is formed in a pipe shape in which a flow path 40a is formed in the vertical direction. A hot water inlet 41 into which hot water is injected and a coffee inlet 42 into which coffee powder is injected are formed in a side portion of the raw material supply member 40. The flow path 40a of the raw material supply member 40 forms a flow path for discharging the hot steam generated in the mixing member 50 during the coffee liquid extraction process, And the steam outlet 43 is discharged to the outside.

The raw material supply member 40 also moves the mixing member 50 up and down with respect to the rotary case 30 by moving up and down with respect to the fixed case 10 by the elevating means. The elevating means for vertically moving the raw material supplying member 40 includes an actuator 71 mounted on the fixed case 10 and a center portion rotatably mounted on the upper surface of the fixed case 10 about the hinge shaft 73 And one end is connected to the lifting rod 72 of the actuator and the other end is connected to the raw material supply member 40 so that the vertical movement of the lifting rod 72 is switched to the vertical movement of the raw material supply member 40 And a link member (74).

Therefore, when the lift rod 72 is extended upward or contracted downward by the actuator 71, the link member 74 is rotated about the hinge shaft 73 to move the raw material supply member 40 downward Or moved upward.

The actuator 71 may be a pneumatic cylinder or a hydraulic cylinder, but may alternatively be a motor or a solenoid. The raw material supply member 40 may be moved up and down by directly connecting the raw material supply member 40 to the actuator 71 without using the link member 74. [

A mixing member 50 for receiving the coffee powder and hot water introduced through the raw material supply member 40 and making a coffee liquid is disposed in the second rotary case 32 of the rotary case 30. [ The mixing member 50 is installed so as to be movable up and down with respect to the second rotary case 32. An elastic member 53 such as a compression coil spring for exerting an elastic force upward against the mixing member 50 with respect to the second rotary case 32 is provided outside the insertion portion 51 of the mixing member 50.

The mixing portion 52 of the mixing member 50 is formed in a cylindrical shape with an open side face and is accommodated in the filter accommodating space 32a of the second rotary case 32 almost closely. The upper plate 52a and the lower plate 52b of the mixing unit 52 are spaced apart from each other by a predetermined distance to form a mixing chamber 52a capable of receiving coffee powder and water, .

The input portion 51 of the mixing member 50 is formed into a cylindrical shape having an opened upper surface and a lower surface so as to communicate with the center of the upper plate 52a of the mixing portion 52. The charging unit 51 may be formed integrally with the upper plate 52a of the mixing unit 52. [ A plurality of latching grooves 51a are formed at regular intervals along the circumferential direction at the upper end of the guide projection 51a of the loading portion 51 and a spring bracket 52b. A plurality of hooking hooks (the lower plate 52b) a are formed so as to extend downward and the hooking hooks (the lower plate 52b a) are inserted and fixed inside the latching grooves 51a . The spring bracket 54 supports the upper end of the elastic member 53 and contacts the lower end of the raw material supply member 40 to support the raw material supply member 40.

A dispersing member 55 for spreading the coffee powder and the hot water introduced through the input unit 51 to the outside is installed at the center of the lower surface of the mixing unit 52 of the mixing member 50. 5 and 6, the dispersion member 55 has a cylindrical body, and a radially extending dispersion vane 55a is formed on the upper surface of the dispersion member 55. As shown in FIG. The dispersing vane 55a may have a straight shape as shown in FIG. 5, but may be curved as shown in FIG.

Further, the upper surface of the dispersing member 55 may be a flat surface, but may be formed in a convex shape upward.

On the other hand, on the outer side of the second rotary case 32, there is provided a coffee collecting chamber member 80 for receiving and temporarily storing the coffee liquid extracted through the extraction port 33 to the outside. The coffee hopper housing member 80 is provided with a heater 81 for heating the coffee liquid to maintain the temperature.

2, a collecting box 85 for receiving the coffee powder residue discharged through the skirt portion 34 of the second rotary case 32 is movably provided at a lower portion of the rotary case 30 Can be installed.

A scraper 58 for scraping off the coffee powder adhering to the inner surface of the filter 60 when the mixing member 50 moves downward is provided on the mixing portion 52 of the mixing member 50, As shown in FIG. The scraper 58 is preferably made of a flexible resin such as silicone or a thin plastic so as not to damage the filter 60.

The thus configured coffee liquid extracting apparatus of the present invention operates as follows.

When power is supplied to the coil 22 from the stator 20 in the state as shown in Fig. 1, the electromagnetic force generated between the core 21 of the stator 20 and the permanent magnet 25 causes the first rotating case 31 and the second rotary case 32 rotate slowly at a set speed. As the first rotary case 31 and the second rotary case 32 rotate, the mixing member 50 coupled to the second rotary case 32 also rotates together.

At this time, when coffee powder is fed through the coffee inlet 42 of the raw material supply member 40 and hot water is introduced through the hot water inlet 41, the flow of the coffee powder through the flow passage 40a of the raw material supply member 40 The coffee powder and hot water are fed into the mixing member 50 downward. The coffee powder and hot water dropped into the mixing member 50 flow into the chamber 52d of the mixing unit 52 through the inlet 51 of the mixing member 50. At this time, And is evenly distributed to the outside of the chamber 52d by the member 55. [

When the first rotating case 31 and the second rotating case 32 and the mixing member 50 are rotated at a high speed, a mixture of the coffee powder and hot water introduced into the chamber 52d of the mixing member 50, And then the coffee liquid is extracted. The coffee liquid extracted from the mixture passes through the filter 60, and the coffee powder residue remains in contact with the inner surface of the filter 60 as it is. The coffee liquid that has passed through the filter 60 is discharged to the outside through the extraction port 33 and is collected in the coffee liquid storage chamber member 80. At this time, the coffee liquid collector member 80 can be heated by the heater 81 to maintain the extracted coffee liquid at a constant temperature.

The coffee liquid collected in the coffee collecting chamber member 80 is discharged to the outside and is contained in a cup or in a separate container to be consumed.

Meanwhile, hot steam generated in the chamber 52d while the coffee powder and the hot water are introduced into the chamber 52d of the mixing member 50 and the coffee liquid is extracted is supplied to the upper inlet 51, And the flow path 40a of the raw material supply member 40 and is discharged to the outside through the steam outlet 43. [

When the coffee extracting operation is completed after a predetermined time has elapsed, the power applied to the core 21 of the stator 20 is cut off and the rotation of the first rotating case 31 and the second rotating case 32 is stopped .

Subsequently, the actuator 71 operates as shown in Fig. 2, and the lifting rod 72 is lifted. As the lifting rod 72 rises, the link member 74 rotates and the distal end of the link member 74 moves downward, whereby the raw material supply member 40 is moved downward with respect to the fixed case 10 .

As the raw material supply member 40 is lowered, the mixing member 50 is lowered against the elastic force of the elastic member 53. When the mixing member 50 descends with respect to the second rotary case 32 and reaches the skirt portion 34, the side surface of the mixing portion 52 is opened and the mixing portion 52 is provided on both sides of the mixing portion 52 The stored coffee powder residue can be discharged to the outside. When the scraper 58 protrudes radially outward from the upper end of the mixing member 50, the scraper 58 scrapes the inner surface of the filter 60, It is possible to cleanly remove the coffee powder residue adhered to the coffee beans.

In this state, when the rotating case 30 and the mixing member 50 are rotated by applying power to the coil 22 of the stator 20 again, the coffee powder remnant inside the mixing portion 52 is returned to the outside And discharged to the lower collecting box 85 to be collected.

When the removing operation of the coffee powder scum is completed, the actuator 71 is lowered again and the lift rod 72 is retracted, and the raw material supply member 40 is raised, contrary to the above. As a result, the mixing member 50 is also raised by the elastic force of the elastic member 53 to return to the original position as shown in Fig. 1, and a new coffee extraction operation can be performed.

As described above, the coffee liquid extracting apparatus of the present invention comprises a stator 20 having a coil 22 to which electricity is applied to the stationary case 10, and a rotary case 30 into which the coffee powder is inserted, The rotating case 30 rotates at a high speed by the electromagnetic force generated between the stator 20 and the permanent magnet 25 by arranging the permanent magnets 25 facing each other in the circumferential direction so that the coffee liquid is extracted can do.

Therefore, the rotary case 30 can be easily separated and cleaned from the fixed case 10, and the entire structure can be simplified.

Further, since the rotation case 30 can be rotated in the normal direction and the reverse direction by controlling the power applied to the coil 22, the rotation speed can be easily controlled, have.

In particular, since the rotary case 30 can be suddenly stopped by using an electric brake between the stator 20 and the permanent magnet 25, there is an advantage that the rotary case 30 can be safely stopped in an emergency situation, .

When the filter 60 and the mixing member 50 of the coffee liquid extracting apparatus are to be separated and cleaned, the lower end of the clamp 35 is pushed to press the clamp 35 to the first The second rotary case 32 is disengaged from the first rotary case 31 and then the second rotary case 32 is disengaged from the engagement groove 37 of the rotary case 31 to release the fixed state, The member 50 and the filter 60 may be cleanly cleaned.

Accordingly, since the mixing member 50 and the filter 60, in which the coffee powder and hot water are introduced and the extraction process of the coffee liquid is progressed, can be easily separated and cleaned, it is advantageous in terms of hygiene.

When extracting the coffee liquid by centrifugal force using the above-described coffee liquid extracting apparatus, a separate cock 90 can be attached to and detached from the extraction port 33 of the second rotary case 32 as shown in Fig. 7 So that the extracted coffee liquid can be reliably guided to the inside of the coffee liquid storage chamber member 80.

The first and the second rotating cases 31 and 32 are configured to be detachable so that the first rotating case 31 is fixed to the inside of the fixed case 10, Only the two rotating cases 32 were separated and cleaned.

However, as shown in Fig. 9, the first rotary case 31 and the second rotary case 32 are integrally formed, and the first rotary case 31 is configured to be detachable from the fixed case 10 The first rotary case 31 and the second rotary case 32 may be separated from each other by separating the first rotary case 31 from the fixed case 10.

10 to 12 show a coffee extracting apparatus according to another embodiment of the present invention in which an elastic member 53 is not provided outside the charging unit 51 as compared with the first embodiment described above A plurality of (for example, three) spring mount bars 56 are provided on the lower surface of the mixing portion 52 so as to penetrate the upper surface of the mixing portion 52 and the upper surface of the second rotary case 32 And the spring mount bar 56 is provided with a compression spring 57 for elastically supporting the spring mount bar 56 against the second rotary case 32 while applying an elastic force upward. The configuration and operation are the same as the example.

Therefore, when the raw material supply member 40 and the mixing member 50 are lowered by the lifting means during the discharge operation of the coffee powder residue, the compression spring 57 is compressed and the raw material supply member 40 The mixing member 50 can be raised again by the elastic force of the compression spring 57 to return to the original position.

As described above, when the first rotating case 31, the second rotating case 32, and the mixing member 50 rotate at a high speed and the coffee liquid is discharged to the outside through the extraction port 33, The coffee liquid and the steam are scattered while the steam is discharged to the outside, so that the coffee liquid pool member 80 may not be collected properly or a safety accident due to hot steam may occur.

In order to prevent such a phenomenon, in FIG. 13 to FIG. 17, the coffee liquid is discharged from the outside of the extraction port 33 of the rotary case 30 after the energy is reduced by the primary collision, Which is condensed into condensed water and then discharged together with the coffee liquid, is proposed.

The second rotary case 32 is rotatably mounted on a fixing bracket 12 fixed to the fixed case 10 (see Fig. 10) Shaped buffer unit 100 for separating the coffee liquid and steam discharged through the extracting port 33 to the outside of the coffee maker and guiding and discharging the coffee liquid downward and condensing and discharging the steam.

10, a stationary case 10 (see Fig. 10) to which the stationary bracket 12 is coupled is provided with a stator 20 (Fig. 10 And a first rotating case 31 (see FIG. 10) provided with a permanent magnet 25 which generates an electromagnetic force while facing the stator 20 is provided on the upper portion of the second rotary case 32 And a raw material supply member 40 (see FIG. 10) for supplying coffee liquid and hot water is installed at the upper end of the charging unit 51 of the mixing member 50.

An extraction port 33b is formed at the end of the extraction port 33 of the second rotary case 32 so that the ejection port 33c communicated with the extraction port 33 is laterally penetrated.

The buffer unit 100 includes a ring-shaped buffer member 110 installed to surround the immediate vicinity of the extraction port 33 of the second rotary case 32, And a ring-shaped discharge guide member 120 having nozzles 121 extending laterally at the lower end thereof.

The buffer member 110 has a curved buffer portion 111 curved in the vertical direction so as to be separated from the coffee liquid and steam while being buffered while bombarding the coffee liquid sprayed through the extracting opening 33 with the steam, A plurality of guide blades 112 inclined in the up and down direction are arranged at a predetermined interval along the circumferential direction so as to guide the coffee liquid to the discharge guide member 120 at the lower side just below the buffer part 111, Respectively.

A plurality of latches 114 for coupling the buffer member 110 to the discharge guide member 120 are formed on the outer circumferential surface of the buffer member 110 to protrude therefrom.

A plurality of (two in this embodiment) first steam guide ribs 115 are formed to protrude upward to condense the steam upward to the upper end of the buffer member 110, 32 are formed at the upper end outer periphery of the first steam guide ribs 115 at a predetermined interval between the two first steam guide ribs 115 and on the outer side thereof to form a zigzag steam passage together with the first steam guide ribs 115 And the first flow path forming ribs 38 are formed to extend downward. Between the first steam guide rib 115 on the outer side of the buffer member 110 and the first flow path forming rib 38 on the outer side of the second rotary case 32 the steam flow path is closed A first sealing member 117 is disposed. A first condensed water discharge hole 116 is formed between the two first steam guide ribs 115 of the buffer member 110 so as to discharge the condensed water downward.

A plurality of second steam guide ribs 125 for condensing steam are arranged at regular intervals in the inner circumferential portion of the discharge guide member 120, 2 steam guide ribs 125. The second flow path forming ribs 39 are formed so as to extend in a downward direction. The end of the steam flow path formed by the second steam guide rib 125 and the second flow path forming ribs 39 is closed by the second sealing member 127. The condensed water condensed at the inside of the steam passage formed by the second steam guide rib 125 and the second passage defining ribs 39 passes through the lower end of the second steam guide rib 125 at the outer side of the discharge guide member 120 And then discharged through the nozzle 121 to the outside.

The lower surface of the discharge guide member 120 may be formed to be inclined downward toward the nozzle 121 so that the coffee liquid and the condensed water collect toward the nozzle 121 and smoothly discharged through the nozzle 121.

The embodiment of the coffee liquid extracting apparatus constructed as above operates as follows.

Power is applied to the stator 20 (see Fig. 10) provided in the fixed case 10 (see Fig. 10) in the state where coffee powder and hot hot water are introduced into the mixing member 50, 10) and the permanent magnet 25 (see Fig. 10) of the case 31 (see Fig. 10), the first rotating case 31 50 is rotated at a high speed and a mixture of coffee powder and hot water inside the mixing member 50 is adhered to the inner surface of the filter 60 by centrifugal force as in the previous embodiment and then the coffee liquid is extracted.

The coffee liquor extracted from the mixture passes through the filter 60 (see Fig. 10), and the coffee powder remnant remains in intimate contact with the inner surface of the filter 60. The coffee liquid that has passed through the filter 60 is discharged through the ejection port 33 and the ejection hole 33c of the ejection port 33b. Hot steam is also discharged at this time.

17, the coffee liquid and the vapor discharged through the extraction port 33b collide with the buffer part 111 of the curved surface of the buffer member 110, and after the energy is reduced, the coffee liquid falls downward Flows along the guide blade 112 and then is discharged to the outside through the nozzle 121 of the discharge guide member 120 and is collected in the coffee collecting lid member 80.

The steam discharged together with the coffee liquid through the extraction port 33b hits the buffer part 111 of the buffer member 110 and then the part of the spatter upwardly flows upward to the first steam guide rib 115, Flow forming ribs 38. The flow- At this time, since the ends of the first steam guide ribs 115 and the first flow path forming ribs 38 are closed by the first sealing member 117, the first steam guide ribs 115 and the first steam guide ribs And is discharged downward through the first condensed water discharge hole 116 and flows along the guide blade 112 along with the coffee liquid.

A portion of the steam bouncing downward from the steam impinging on the buffer part 111 flows along the steam path formed between the second steam guide rib 125 and the second flow path forming rib 39 and is condensed, Is discharged through the second condensed water discharge hole (126) at the lower end of the discharge pipe (125), and is discharged to the outside together with the coffee liquid through the nozzle (121).

As described above, in the coffee liquid extracting apparatus of this embodiment, the coffee liquid and steam discharged to the outside via the extracting opening 33 are primarily collided with the buffer member 110, and the energy is reduced, and then discharged through the nozzle 121 It is possible to reduce the discharge speed of the coffee liquid and minimize the possibility of the coffee liquid splashing or safety accident due to the discharge of the hot steam.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the appended claims. And it is to be understood that such modified embodiments belong to the scope of protection of the present invention defined by the appended claims.

10: Fixing case 11: Through hole
20: stator 21: core
22: coil 25: permanent magnet
30: rotating case 31: first rotating case
32: second rotating case 33:
35: clamp 38: flow path forming rib
39: second flow forming rib 40: raw material supplying member
41: hot water inlet 42: coffee inlet
43: steam outlet 50: mixing member
51: input portion 52: mixing portion
53: elastic member 54: spring bracket
55: dispersing member 55a: dispersing blade
58: Scraper 60: Filter
71: actuator 72: lift rod
73: hinge shaft 74: link member
80: Coffee storage chamber member 85: Collection box
90: Cock 100: Buffer unit
110: buffer member 111:
112: guide blade 115: first steam guide passage
116: first condensed water discharge hole 117: first sealing material
120: discharge guide member 121: nozzle
125: second steam guide flow path 126: second condensed water discharge hole
127: second sealing material

Claims (20)

A fixed case (10) having a through hole (11) penetrating vertically;
A raw material supply member 40 inserted through the through hole 11 of the fixed case 10 and having a flow path 40a into which coffee powder and hot water are introduced;
A stator 20 including a core 21 formed at predetermined intervals along the circumferential direction of the fixed case 10 and a coil 22 wound around the core 21 and receiving power;
And a filter accommodating space (32a) rotatably provided on the lower side of the fixed case (10) with respect to the fixed case (10) and communicating with the through hole (11) of the fixed case (10) A rotary case 30 communicating with the filter accommodating space 32a and communicating with the outside at the other end to form an extraction port 33 for discharging the coffee liquid therethrough;
A permanent magnet 25 installed on the rotary case 30 so as to face the stator 20 to generate an electromagnetic force together with the stator 20 to cause rotational movement of the rotary case 30;
A charging part 51 provided in the filter accommodating space 32a of the rotary case 30 and communicating with the flow path 40a of the raw material supplying member 40; And a mixing part (52) disposed in the filter accommodating space (32a) and communicating with the inlet part (51) and receiving the coffee powder and the hot water introduced through the introducing part (51) 50); And,
A filter 60 installed between the side portion of the mixing part 52 and the extraction port 33 in the filter accommodating space 32a of the rotary case 30 so as to pass only the liquid without passing the coffee powder;
Wherein the coffee extracting apparatus comprises: The mixer according to claim 1, wherein the mixing member (50) is vertically movable with respect to the rotary case (30), and the mixing member (50) And an elastic member for applying an elastic force to the elastic member. delete The mixer according to claim 2, wherein a plurality of spring mount bars (56) are provided on the lower surface of the mixing unit (52) to penetrate the upper surface of the mixing unit (52) and the upper surface of the rotary case The mounting bar (56) is provided with a compression spring (57) which is an elastic member for elastically supporting the spring mount bar (56) against the rotary case (30) while applying an elastic force upward. Device. The mixer according to claim 2, wherein a lower end of the raw material supply member is disposed to be in contact with an upper end of a charging unit of the mixing member, Up means for moving the mixing member (50) up and down with respect to the rotary case (30) by vertically moving the mixing member (50) up and down with respect to the fixed case (10). The elevator according to claim 5, wherein the elevating means comprises an actuator (71) installed in the fixed case (10), a lifting rod (72) moving up and down by the actuator (71) And the other end is connected to the raw material supply member 40 to move up and down the lift rod 72 in the up and down direction And a link member (74) for switching the vertical movement of the raw material supply member (40). The coffee beverage according to claim 2, wherein the mixing member (50) is provided on the upper part of the mixing part (52) so as to protrude in the lateral direction so that when the mixing member (50) And a scraper (58) for scraping off the coffee beverage. The motorcycle according to claim 1, wherein the rotary case (30) comprises: a first rotary case provided with the permanent magnet (25); a first rotary case (31) detachably connected to a lower side of the first rotary case And a second rotating case (32) having a filter accommodating space (32a) formed therein. The mixing apparatus according to claim 1, wherein an opening (31a) through which the insertion portion (51) of the mixing member (50) penetrates is formed in the rotary case (30) The grooves 31b are formed at regular intervals along the circumferential direction and inserted into the guide groove 31b on the outer surface of the insertion portion 51 of the mixing member 50, And a plurality of guide projections (51a) guiding movement are formed to extend in the vertical direction. The coffee machine according to claim 1, wherein the raw material supply member (40) is formed so as to pass through the flow path (40a) in the up and down direction, and has a hot water inlet (41) And the upper end of the passage (40a) forms a steam outlet (43) through which the steam generated in the mixing member (50) is discharged to the outside. Extraction device. The coffee beverage according to claim 1, wherein coffee powder and hot water, which are installed in the mixing part (52) of the mixing member (50) immediately below the charging part (51) And a dispersing member (55) for separating the coffee beans from each other. 12. The apparatus for extracting coffee liquid according to claim 11, wherein a plurality of dispersing vanes (55a) are formed radially on the upper surface of the dispersing member (55). The coffee machine according to claim 1, further comprising: a coffee collecting chamber member (80) installed outside the rotary case (30) for receiving and temporarily storing the coffee solution extracted to the outside through the extraction opening (33) And a centrifugal force. 14. The coffee liquid extracting apparatus according to claim 13, wherein the coffee lobe collecting member (80) is provided with a heater (81) for heating the coffee liquor to maintain the temperature. The coffee machine according to claim 5, wherein the lower portion of the rotary case (30) guides downward the coffee powder residue discharged to the outside through the side surface of the mixing member (50) when the mixing member (50) And a conical skirt portion (34) is formed on the outer peripheral surface of the cup-shaped skirt portion (34). The coffee machine as set forth in claim 1, wherein the rotary case (30) is provided so as to surround an outer portion of the portion where the extraction port (33) is formed, and the coffee liquid discharged through the extraction port (33) Further comprising a ring-shaped buffer unit (100) for guiding the coffee liquid to the outside and discharging it to the outside, condensing the vapor, and discharging the coffee liquid to the outside together with the coffee liquid. 17. The apparatus of claim 16, wherein the buffer unit (100)
A ring-shaped buffer member 110 installed so as to surround the immediate vicinity of the extraction port 33 of the rotary case 30; A discharge guide member 120 installed at a lower side of the buffer member 110 and having a nozzle 121 formed at a lower end thereof to extend outwardly to discharge coffee liquid and condensed water to the outside;
/ RTI >
The buffer member 110 has a curved buffer part 111 curved in the vertical direction so as to be separated from the coffee liquid and steam while being buffered while bombarding the coffee liquid sprayed through the extraction opening 33 with the steam, A plurality of guide blades 112 inclined in the up and down direction are arranged at a predetermined interval along the circumferential direction so as to guide the coffee liquid to the discharge guide member 120 at the lower side just below the buffer part 111, And the coffee beverage extracting device using centrifugal force. The steam generator as set forth in claim 17, wherein a plurality of first steam guide ribs (115) for guiding and condensing steam upward are formed on the upper end of the buffer member (110) And a plurality of first flow path forming ribs (38) arranged to be spaced apart from each other between the plurality of first steam guide ribs (115) and outside to form a staggered steam flow path together with the first steam guide ribs The steam flow path formed by the first steam guide rib 115 and the first flow path forming rib 38 is formed at an end portion of the steam flow path, And a first condensed water discharge hole (116) for discharging condensed water downward is formed between the plurality of first steam guide ribs (115) so as to pass through the first and second steam guide ribs (115) Coffee liquid Ex devices. The steam turbine according to claim 17, wherein a plurality of second steam guide ribs (125) for condensing steam are arranged at an interval from each other at an inner peripheral portion of the discharge guide member (120) And a second flow path forming rib 39 extending downward from the second steam guide ribs 125 and extending in a zigzag form to extend between the second steam guide ribs 125. The second steam guide ribs 125, The second sealing member 127 closing the steam passage is provided at the end of the steam passage formed by the two passage forming ribs 39. The second sealing guide ribs 125 of the outermost second steam guide ribs And a second condensed water discharge hole (126) for discharging condensed water is formed in the lower end of the first condensed water discharge hole (125). The apparatus according to claim 17, wherein the lower surface of the discharge guide member (120) is formed to be inclined downward toward the nozzle (121) so that the coffee liquid and the condensed water gather toward the nozzle (121) Feature of Coffee Liquid Extraction Device Using Centrifugal Force.

Images