JP2005152188A - Beverage brewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a beverage brewing machine capable of preventing adhesion and accumulation of extract on a shooter and maintaining the extract fed into an extraction chamber almost at a prescribed quantity. <P>SOLUTION: The beverage brewing machine comprises an extraction cylinder 13, a lower piston 15 and an upper piston 17 for extracting beverage (coffee) from the extract (coffee powder) guided into the extraction chamber R, and the shooter 19 for feeding the extracted material into the extraction chamber R from above. The beverage brewing machine also has coffee mills 21 and 23 and hoppers 65 and 67 for feeding the prescribed quantity of the extract to the shooter 19 for each extraction. The shooter 19 has a discharge port held at a fixed position, and is vibrated by a scraper 25 (a vibrating member). The scraper 25 is a moving member for discharging the extract to the out of the extraction cylinder 13 after the extraction of the beverage. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a beverage extractor, and in particular, an extraction mechanism that has an extraction chamber and extracts a beverage (for example, coffee from coffee powder) from an extracted substance introduced into the extraction chamber; The present invention relates to a beverage extractor including an introduction member that introduces an extracted substance from above, and a supply mechanism that supplies the introduction member with a specified amount of the extracted substance for each extraction.

This type of beverage extractor is described, for example, in Patent Document 1 below, and in the beverage extractor described in Patent Document 1, an introduction member (shooter) is rotatably supported between side plates. ing. This introduction member is locked by a latching mechanism when the extraction substance (coffee powder) is introduced into the extraction chamber and is prevented from rotating, and is in a fixed position (position where the extraction substance can be introduced into the extraction chamber from above). Yes, after the beverage (coffee) is extracted, the latch by the latch mechanism is released, and it is rotated outward by the urging force of the spring so as to contact the receiving portion and vibrate.
No. 2-33704

  For this reason, in the beverage extractor described in Patent Document 1 described above, the extractable substance adhering to the introduction member can be shaken off by the vibration when the introduction member comes into contact with the receiving portion, and extracted to the introduction member. It is possible to prevent the substance from accumulating, and it is possible to avoid the supply port of the introduction member from being blocked by the extraction substance. However, since the introduction member vibrates by rotating from the fixed position to the outside of the extraction chamber and coming into contact with the receiving portion, the extraction substance attached to the introduction member is not shaken down into the extraction chamber. As a result, the amount of the extraction substance supplied into the extraction chamber is reduced, and there is a problem that the variation from the specified amount of the extraction substance supplied into the extraction chamber by the supply mechanism increases.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to prevent the extraction material supplied from the supply mechanism from adhering to and depositing on the introduction member and to supply the extraction material to the extraction chamber. An object of the present invention is to provide a beverage extractor in which the extracted substance can be maintained at a substantially prescribed amount.

  In order to achieve this object, in the present invention, an extraction mechanism that has an extraction chamber and extracts a beverage from the extracted substance introduced into the extraction chamber, and introduces the extracted substance into the extraction chamber from above. In a beverage extractor comprising an introduction member and a supply mechanism for supplying a specified amount of the extracted substance to the introduction member for each extraction, the outlet of the introduction member is held at a fixed position, and the beverage It is characterized in that a vibration member that vibrates the introduction member after extraction is provided.

  According to this, since the vibrating member vibrates the introducing member after the beverage is extracted, the extracted substance attached to the introducing member is shaken off. In this case, since the discharge port of the introduction member is held at a fixed position, the extracted substance adhering to the introduction member is shaken off in the extraction chamber. For this reason, at the time of regular use (at the time of the second and subsequent use in the case of repeated use), the amount of the extracted substance supplied through the introduction member is reduced by the adhering amount from the prescribed amount, but the previous beverage Since the material adhering to the introduction member at the time of extraction is shaken off after the previous extraction and supplied to the extraction chamber, the amount of the extracted substance supplied to the extraction chamber is almost the specified amount, and variation from the specified amount is reduced. Is possible. Moreover, since the extracted substance adhering to the introduction member is used for the next beverage extraction, the extracted substance can be used effectively without waste.

  Further, in the present invention, an extraction mechanism that has an extraction chamber and extracts a beverage from the extraction substance introduced into the extraction chamber, and an introduction member that introduces the extraction substance into the extraction chamber from above, In the beverage extractor provided with a supply mechanism for supplying a predetermined amount of the extraction substance to the introduction member for each extraction, the discharge port of the introduction member is held at a fixed position, and the supply mechanism supplies the introduction member to the introduction member. It is characterized in that a vibration member for vibrating the introduction member is provided after the extraction substance is supplied and before the beverage is extracted.

  According to this, since the vibrating member vibrates the introducing member after supplying the extracting substance from the supply mechanism to the introducing member and before extracting the beverage, the extracting substance attached to the introducing member is shaken off. In this case, since the discharge port of the introduction member is held at a fixed position, the extracted substance adhering to the introduction member is shaken off in the extraction chamber. For this reason, although the amount of the extracted substance supplied through the introduction member is reduced by the amount of adhesion than the prescribed amount, this adhesion is shaken off by the vibration of the introduction member by the vibration member and supplied into the extraction chamber. The amount of the extraction substance supplied into the extraction chamber is almost the specified amount, and variation from the specified amount can be reduced. In addition, since the extracted substance attached to the introduction member is used for extraction of the beverage at that time, it is possible to use the extracted substance effectively without waste and to suppress the deterioration of the flavor of the extracted substance. is there.

  Further, when the present invention is implemented, if the extraction mechanism is provided with a discharge mechanism for discharging the extracted substance to the outside of the extraction chamber after the beverage has been extracted, the discharge mechanism is a single component of the discharge mechanism. It is also possible that an operating member that operates during operation of the mechanism also serves as the vibration member.

  In this case, since the operating member that operates as a constituent member of the discharging mechanism also serves as the vibrating member, the vibrating member can be configured to be simple and inexpensive. In addition, according to this, the space necessary for the vibration member that vibrates the introduction member may be a small amount of space that the operation member of the discharge mechanism can move to vibrate the introduction member. It is possible to reduce the size of the beverage extractor.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 3 show the appearance of a coffee extractor, which is a beverage extractor according to the present invention. Inside the substantially box-shaped outer case 11 that constitutes the exterior of this coffee extractor, FIGS. As shown in FIG. 1, the extraction cylinder 13, the lower piston 15, the upper piston 17, the shooter 19, the coffee mills 21, 23, and the scraper 25 are assembled.

  In addition, a boiler tank (not shown) for heating the coffee extraction water is provided in the outer case 11, and the coffee extraction water in the boiler tank is supplied at a predetermined pressure via a supply / discharge electromagnetic switching valve V1 (see FIG. 16). A pressurizing pump motor PM (see FIG. 16) that feeds pressure toward the extraction cylinder 13 is provided. The boiler tank is automatically supplied with coffee extraction water via a water supply valve (not shown) that opens and closes based on a detection signal from a water level sensor (not shown) provided in the boiler tank. The operation of an electric heater (not shown) is controlled based on a detection signal from a temperature sensor (not shown), and the coffee extraction water is automatically heated and maintained.

  The supply / discharge electromagnetic switching valve V1 is interposed in a water supply circuit connecting the pressurization pump motor PM and the extraction cylinder 13, and the operation is controlled by the electric control unit ECU (see FIG. 16) together with the pressurization pump motor PM. Thus, when the pressure pump motor PM pumps the coffee extraction water toward the extraction cylinder 13, the communication between the extraction cylinder 13 and the outside is cut off and the coffee from the pressure pump motor PM to the extraction cylinder 13 is cut off. When extraction water can be supplied and the pressurization pump motor PM stops pumping, communication between the extraction cylinder 13 and the pressurization pump motor PM is interrupted to allow drainage from the extraction cylinder 13 to the outside.

  The extraction cylinder 13 is assembled to the base 29 via the bracket 27 and is not movable with respect to the base 29, and is arranged substantially vertically. Further, as shown in detail in FIG. 8, a stopper 31 for preventing the lower piston 15 from falling off the extraction cylinder 13 is integrally assembled at the lower end of the extraction cylinder 13.

  As shown in detail in FIG. 8, the lower piston 15 includes a piston main body 15 a that is movable in the axial direction of the cylinder through an O-ring 33 and is fluid-tightly assembled in the extraction cylinder 13, and the piston main body 15 a. A piston rod 15b which is integrally assembled below the shaft center portion of the piston rod 15b and extends downward through the stopper 31, and a piston rod 15b which is integrally assembled below the piston body 15a and extends downward through the stopper 31. A guide rod 15c parallel to the rod 15b is provided, and is biased downward by a spring 35 interposed between the lower end of the piston rod 15b and the stopper 31.

  The spring 35 has an upper end engaged with the stopper 31 and a lower end engaged with a retainer 37 fixed to the lower end of the piston rod 15b, and the retainer 37 is pushed upward by the upward movement of the movable frame 39. When the lower piston 15 moves upward, it is compressed, and when the retainer 37 moves downward as the movable frame 39 moves downward, the lower piston 15 moves downward to its bottom dead center (position where it comes into contact with the stopper 31). When the movable frame 39 extends and moves downward away from the retainer 37, it is configured to be held in a compressed state by a predetermined amount.

  The lower piston 15 has a hose 41 for supplying coffee extraction water (hot water) heated to a predetermined temperature by a boiler tank (not shown) and pressurized and fed by a pressure pump motor PM into the extraction cylinder 13. Are connected via a base 43, and a disperser 45 for dispersing coffee extraction water supplied into the extraction cylinder 13 through the hose 41 and the base 43 is assembled.

  The upper piston 17 can be inserted into and removed from the upper side of the extraction cylinder 13, and forms an extraction chamber R by the extraction cylinder 13 and the lower piston 15, and is integrally assembled with the movable frame 39. Yes. Further, as shown in FIG. 9, an O-ring 47 is attached to the lower end portion of the upper piston 17 to make the space between the extraction cylinder 13 and the extraction cylinder 13 liquid-tight when fitted into the extraction cylinder 13. In addition, a filter 49 that allows coffee, which is an extracted beverage, to pass therethrough is assembled. Further, the upper piston 17 is formed with an extraction hole 17a for guiding the coffee that has passed through the filter 49 to the coffee pouring nozzle 91 shown in FIG. The base 17b (see FIG. 4 and FIG. 5) assembled at the outflow side end of the extraction hole 17a and the coffee dispensing nozzle 91 are connected by a hose (not shown).

  The movable frame 39 is assembled to the bracket 27 that supports the extraction cylinder 13 so as to be movable up and down, and is configured to be moved up and down by a lifting device. As shown in FIG. 4, the lifting device is assembled with a screw member (nut) 51 fixed to the bracket 27 and a movable frame 39 that is rotatable and immovable in the axial direction, and is screwed into the screw member 51. A screw shaft 53, a screw shaft drive motor 55 that rotationally drives the screw shaft 53, a guide bearing 57 (see FIG. 6) fixed to the bracket 27, and the movable shaft 39 are assembled in parallel with the screw shaft 53. The guide shaft 59 is inserted into the guide bearing 57 so as to be movable in the axial direction. In this lifting device, the operation of the screw shaft drive motor 55 is controlled by the electric control unit ECU (see FIG. 20), so that the movable frame 39 that supports the upper piston 17 is controlled to move in the vertical direction.

  The shooter 19 includes an upper shooter 19A (see FIGS. 4 to 7 and FIGS. 10 and 11) and a lower shooter 19B that can be connected and separated, and a bracket 28 (separate from the bracket 27) above the extraction cylinder 13. Are assembled to the base 29). The shooter 19 has two supply ports 19a and 19b to which different types of coffee powders supplied from the two coffee mills 21 and 23 are dropped and supplied at the upper left and right rear, and a single discharge port 19c at the lower part. And a pair of left and right inclined surfaces 19d and 19e corresponding to the supply ports 19a and 19b.

  In addition, a substantially vertical partition plate 19f is provided in the middle of the shooter 19. The partition plate 19f is interposed between at least the slopes 19d and 19e, and when the different types of coffee powder supplied from the coffee mills 21 and 23 are dropped and supplied, the partition plate 19f is scattered on the other slopes 19d and 19e and the peripheral wall. Prevent sticking. In addition, an insertion port 19g through which a user can manually input a favorite coffee powder is provided in front of the center of the upper portion of the shooter 19.

  Each coffee mill 21, 23 is configured to be driven by each mill drive motor 61, 63 provided below, and is assembled to the bracket 28 at the upper rear of the shooter 19. The coffee powder ground by 21 and 23 is configured to be introduced into the supply ports 19 a and 19 b of the shooter 19. A pair of bean hoppers 65 and 67 into which different types of coffee beans are placed are disposed above the coffee mills 21 and 23. Each hopper 65, 67 is charged with an amount of coffee beans that can be continuously supplied to each coffee mill 21, 23. In addition, coffee beans for espresso coffee are put into the hopper 65, and coffee beans for filter coffee are put into the hopper 67.

  As shown in FIGS. 5 and 12, the scraper 25 has a fork shape that is cut out in a substantially semicircular shape, and is assembled to a slider 25b that can be advanced and retracted by a bolt 71 by an arm 25a. Thus, it is supported so as to be tiltable around the axis of the bolt 71, and can be moved forward and backward as the slider 25b moves forward and backward. Further, spring plungers 72 are assembled to both sides of the scraper 25, respectively.

  Each spring plunger 72 controls the tilting of the scraper 25 by a pair of guide plates 73 disposed so as to sandwich the scraper 25 from both sides above the extraction cylinder 13, as shown in FIG. The casing 72a, the plunger 72b, and the spring 72c are comprised, and the plunger 72b is assembled | attached to the scraper 25 with the casing 72a so that it may protrude outward from the side part of the scraper 25. The plunger 72b is assembled to the casing 72a so as to be able to advance and retreat, and is biased by a spring 72c so that one end of which the tip has a hemispherical shape protrudes from the casing 72a.

  Each guide plate 73 is disposed in parallel along the direction of forward / backward movement of the scraper 25 and faces each other. As shown in FIG. 14 and FIG. The guide projection 74 is slidably engaged with the protrusion of the plunger 72b.

  The guide protrusion 74 functions to move the scraper 25 forward along the upper end surface of the extraction cylinder 13 in cooperation with the spring plunger 72 and to move the slider 25b backward when the scraper 25 advances as the slider 25b advances. When the scraper 25 moves backward, the scraper 25 moves backward in a state of floating from the upper end surface of the extraction cylinder 13 in cooperation with the spring plunger 72 and a part of the scraper 25 is brought into contact with the lower end portion of the shooter 19. The shooter 19 has a function to vibrate and vibrate, and includes an upper step 74a and a lower step 74b having different thicknesses in the axial direction of the plunger 72b, and is formed in the vertical direction formed at the front ends of the upper step 74a and the lower step 74b The slope 74c is provided.

  The upper step portion 74a is formed so that the thickness in the plunger axial direction is larger than the same thickness of the lower step portion 74b, and the same thickness of the upper step portion 74a is larger than the maximum protruding length L of the plunger 72b (see FIG. 13). It is formed to be slightly larger. Further, the upper step portion 74 a is disposed on the lower surface thereof at a position where the plunger 72 b of the spring plunger 72 slides when the scraper 25 moves forward.

  The lower step 74b has a slope 74b1 in the thickness direction formed so that the thickness in the plunger axial direction changes at the rear end thereof, and the tip of the plunger 72b of the spring plunger 72 follows the slope 74b1 when the scraper 25 moves forward. Thus, the plunger 72b is pushed into the casing 72a against the spring 72c.

  The vertical slope 74c is formed so as to extend continuously from the front ends of the lower step 74b and the upper step 74a to the upper surface of the upper step 74a, and the engagement with the lower step 74b is released when the scraper 25 moves forward. The plunger 72b of the spring plunger 72 is slid downward, and the plunger 72b is slid upward when the scraper 25 is retracted and guided to the upper surface of the upper step portion 74a.

  The slider 25b moves the scraper 25 forward and backward, and is supported by a pair of supports 75 facing each other so as to be sandwiched from both sides as shown in FIG. A rack bar 76 is integrally assembled on the upper surface of the slider 25b along the forward and backward directions.

  The rack bar 76 is connected to a scraper drive motor 78 via a pinion gear 77, a belt gear (not shown), and the like. The rack bar 76 moves forward by the forward rotation drive of the scraper drive motor 78, and the rack bar 76 moves backward by the reverse rotation drive of the scraper drive motor 78. The operation of the scraper drive motor 78 is controlled by an electric control unit ECU (see FIG. 16).

  As shown in FIGS. 4 and 5, in this beverage extractor, a slope 81 is provided corresponding to the extraction cylinder 13, and a receiving box 83 is provided. The slope 81 guides the coffee powder pushed out by the forward movement of the scraper 25 to the receiving box 83. The receiving box 83 has a handle 83a at the front upper portion, and is arranged so as to be detachable from the front of the coffee extractor as is apparent from FIG.

  Moreover, in this coffee extractor, as shown in FIGS. 1 to 3, a front cover 85 that bulges forward is attached to the front surface portion of the outer case 11, and the front cover 85 is substantially at the center. Seven operation buttons 87a to 87g and a liquid crystal display panel 89 are arranged in the section. Further, in the front cover 85, the operation of the above-described supply / exhaust electromagnetic switching valve V1, the pressurizing pump motor PM, each of the motors 55, 61, 63, 78 and the like and the operation of the hot water supply valve V2 described later are controlled. An electric control unit ECU is provided.

  The operation button 87a is operated when extracting a cup of espresso coffee, the operation button 87b is operated when extracting a cup of mild espresso coffee, and the operation button 87c is It is operated when extracting a cup of semi-filtered coffee. The operation button 87d is operated when extracting two cups of espresso coffee, and the operation button 87e is operated when extracting two cups of mild espresso coffee. The button 87f is operated when extracting two cups of semi-filtered coffee. The operation button 87g is operated when hot water is supplied from the hot water nozzle 93 shown in FIGS.

  Further, as shown in FIGS. 1 to 3, the coffee pouring nozzle 91 and the hot water nozzle 93 are disposed below the front cover 85, and the steam pouring disposed at the lower left corner of the front cover 85. A steam dispensing nozzle 97 capable of blowing steam by operating the handle 95 is disposed. Further, below each nozzle 91, 93, 97, a drain pan 99 on which a slat is placed is attached. A cup space 11a is formed on the left side of the upper surface of the outer case 11, and several cups can be kept warm.

  The hot water nozzle 93 is connected to the lower part of the boiler tank (part where hot water is stored) via a normally closed hot water supply valve V2 (see FIG. 16), and the electric control unit ECU is operated by pressing an operation button 87g. The hot water supply valve V2 is configured to open. For this reason, when the operation button 87g is pressed, hot water is supplied from the boiler tank to the hot water nozzle 93.

  The steam pouring handle 95 opens and closes a manual on-off valve (not shown) interposed in a steam supply pipe (not shown) that connects the steam pouring nozzle 97 and the upper part of the boiler tank (part where steam is stored). When the steam discharge handle 95 is operated to open a manual open / close valve (not shown), steam is supplied from the boiler tank to the steam discharge nozzle 97.

  As shown in FIG. 16, the electric control unit ECU is connected to the input voltage detection circuit 86, the operation buttons 87a to 87g, the micro switches SW1 to SW3, the flow rate sensor FS, and the pulse encoder ENC, and the supply / discharge electromagnetic switching. The valve V1, the hot water supply valve V2, the pressurizing pump motor PM, and the motors 55, 61, 63, 78 are connected to each other, and the supply / discharge electromagnetic switching valve V1 and the hot water supply valve V2 are operated according to the operation of the operation buttons 87a to 87g. The operation of the pressurizing pump motor PM or each of the motors 55, 61, 63, 78 is controlled.

  The input voltage detection circuit 86 detects the input voltage to the mill drive motors 61 and 63 and outputs a detection signal based on the input voltage to the electric control unit ECU. The electric control unit ECU stores in advance a relational expression (approximate expression) representing the relationship between the input voltage and the coffee beans grinding time corresponding to the operation buttons 87a to 87g. , And the detection signal from each operation button 87a-87g, the bean grinding time of a specified amount of coffee beans corresponding to the operation button is determined, and based on this determination time, the mill drive motors 61, 63 The operation is controlled (see FIG. 17). Thus, a specified amount of coffee powder corresponding to each of the operation buttons 87a to 87g is supplied to the shooter 19 regardless of the magnitude of the input voltage.

  In FIG. 17, the vertical axis represents the bean grinding time of coffee beans (for example, about 8 g required for a cup of espresso coffee), and the horizontal axis represents the input voltage. This input voltage represents a reference voltage of 100 % V. In addition, it is not necessary to determine the coffee grinding time of the specified amount of coffee beans corresponding to the operation buttons based on the detection signal from the input voltage detection circuit 86 and the detection signals from the operation buttons 87a to 87g. When the driving time of the mill drive motors 61 and 63 is set uniformly with respect to the coffee beans, the motor rotation speed varies depending on the voltage input to the mill drive motors 61 and 63. As a result, the coffee beans will not be ground by the specified amount.

  The micro switch SW1 is for detecting that the movable frame 39 has moved to the origin position (operation start position), and is assembled to the bracket 27 as shown in FIGS. The micro switch SW2 is for detecting that the rack bar 76 that moves integrally with the scraper 25 has moved to the retracted position, and is attached to the bracket 27 as shown in FIGS. Yes. The micro switch SW3 is used to detect that the rack bar 76 that moves integrally with the scraper 25 has moved to the forward movement position. As shown in FIGS. 5 and 12, the micro switch SW3 overlaps the micro switch SW2. The bracket 27 is assembled.

  The flow sensor FS is interposed in a water supply circuit from the pressurization pump motor PM to the supply / discharge electromagnetic switching valve V1, and is used for the coffee extracted water (hot water) pumped from the pressurization pump motor PM toward the extraction cylinder 13. Detect the flow rate. The pulse encoder ENC detects the number of rotations of the screw shaft 53 by the screw shaft drive motor 55, and indirectly detects the amount of movement of the movable frame 39 in the vertical direction.

  In the coffee brewing machine of this embodiment configured as described above, the pressurizing pump motor PM is stopped during the standby state, the supply / discharge electromagnetic switching valve V1 is turned off, and the brewing cylinder 13 is external. The communication with the pressure pump motor PM is cut off. The motors 55, 61, 63, 78 are stopped, and the movable frame 39 is held at the origin position shown in FIGS. In this standby state, coffee extraction water (hot water) heated to a predetermined temperature is stored in the boiler tank.

  Moreover, in the coffee extractor of this embodiment, when each operation button 87a-87f is operated in the above-mentioned standby state, the extraction operation | movement of operation | movement (1) -operation | movement (8) explained in full detail below is obtained. The desired amount of coffee (espresso coffee, mild espresso coffee or semi-filtered coffee) is extracted (for one or two cups).

  In the operation (1), the movable frame 39 held at the origin position rises to a powder standby position set in advance according to the operation buttons 87a to 87f (see FIG. 18). At this time, the screw shaft drive motor 55 rotates forward and the screw shaft 53 is driven to rotate forward, and the lower piston 15 rises to a powder standby position set in advance according to the operation buttons 87a to 87f. In this operation (1), the operation of the screw shaft drive motor 55 is controlled by the electric control unit ECU based on a signal from the pulse encoder ENC.

  In the operation (2), each mill drive motor 61 or 63 of the coffee mill 21 or 23 set in advance according to each operation button 87a to 87f (when each operation button 87a, 87b, 87d, 87e is operated, When the mill drive motor 61 is selected and the operation buttons 87c and 87f are operated, the mill drive motor 63 is selected) for the time determined by the operation of the operation buttons 87a to 87f according to the input voltage. Then, the coffee powder is dropped and supplied to the extraction cylinder 13 through the shooter 19.

  In operation (3), the movable frame body 39 that is lifted and held to the powder standby position is lowered to the extraction position that is set in advance according to the operation buttons 87a to 87f (see FIG. 19). At this time, the screw shaft drive motor 55 rotates in the reverse direction, and the screw shaft 53 is driven in the reverse rotation, so that the lower piston 15 moves to the bottom dead center position where it engages with the stopper 31, and the upper piston 17 moves to the operation buttons 87a. Is lowered to a preset extraction position in response to ˜87f, and the coffee powder is sandwiched between the upper piston 17 and the lower piston 15 in the extraction cylinder 13. In this operation (3), the operation of the screw shaft drive motor 55 is controlled by the electric control unit ECU based on a signal from the pulse encoder ENC.

  In the operation (4), the supply / discharge electromagnetic switching valve V1 is turned ON, the extraction cylinder 13 communicates with the pressurizing pump motor PM, and the communication with the outside is cut off. Further, the pressurizing pump motor PM is driven, and the boiler Coffee extraction water (hot water) heated to a predetermined temperature from the tank is pumped toward the extraction cylinder 13, and coffee is extracted in the extraction chamber R. In this operation (4), the operation of the supply / exhaust electromagnetic switching valve V1 and the pressurizing pump motor PM is preset according to the operation buttons 87a to 87f by the electric control unit ECU based on the signal from the flow sensor FS. To be controlled.

  In the operation (5), the movable frame 39 held down to the extraction position in the state where the supply / exhaust electromagnetic switching valve V1 is turned OFF and the pressurizing pump motor PM is stopped is operated by the operation buttons 87a. The pressure is lowered to a preset pressurization position according to ˜87f and held for a set time (see FIG. 20). At this time, the screw shaft drive motor 55 rotates in the reverse direction, the screw shaft 53 is driven in the reverse rotation, and the upper piston 17 is operated in the state where the lower piston 15 is held at the bottom dead center position where it engages with the stopper 31. In accordance with the buttons 87a to 87f, the pressure is lowered to a preset pressure position and is held for a set time, and the coffee powder is pressurized by the upper piston 17 and the lower piston 15 in the extraction cylinder 13. Therefore, the coffee powder is drained to become compact and is compressed into a cylindrical shape. In this operation (5), the operation of the screw shaft drive motor 55 is controlled by the electric control unit ECU based on a signal from the pulse encoder ENC.

  In the operation (6), the movable frame body 39 that is lowered and held to the pressurizing position is raised to the top dead center position (see FIG. 21). At this time, the screw shaft drive motor 55 rotates forward and the screw shaft 53 is driven to rotate forward, and the upper piston 17 and the lower piston 15 rise to their top dead center positions. Therefore, after this operation, cake-shaped coffee powder (coffee powder after extraction) that has been drained and compacted and compressed into a cylindrical shape is lifted up to the upper end surface of the extraction cylinder 13. In this operation (6), the operation of the screw shaft drive motor 55 is controlled by the electric control unit ECU based on a signal from the pulse encoder ENC.

  In operation (7), the scraper 25 held in the retracted position moves to the advanced position (see FIGS. 15 and 22), returns to the retracted position and waits, and is lifted to the upper end surface of the extraction cylinder 13 during that time. The cake-like coffee powder is pushed out of the extraction cylinder 13. In this operation (7), the operation of the scraper drive motor 78 is controlled by the electric control unit ECU based on signals from the micro switches SW2 and SW3. The cake-like coffee powder pushed out of the extraction cylinder 13 by the scraper 25 slides on the slope 81 and falls into the receiving box 83.

  In the operation (8), the movable frame 39 that is held up to the top dead center position is lowered to the origin position. At this time, the screw shaft drive motor 55 rotates in reverse and the screw shaft 53 is driven in reverse rotation, so that the upper piston 17 and the lower piston 15 return to their respective origin positions and enter the standby state shown in FIG. In this operation (8), the operation of the screw shaft drive motor 55 is controlled by the electric control unit ECU based on a signal from the pulse encoder ENC.

  By the way, in this embodiment, when the scraper drive motor 78 is driven to rotate forward in the above-described operation (7), the scraper 25 waiting in the retracted position shown in FIG. 15 moves the rack bar 76 and the slider 25b forward. Move forward with it. At this time, the plunger 72b of the spring plunger 72 advances while sliding along the lower surface of the upper step portion 74a and the inclined surface 74b1 of the lower step portion 74b in the guide protrusion 74, and is pushed into the casing 72a against the spring 72c. It is done. Thereafter, the plunger 72b of the spring plunger 72 advances while sliding on the lower surface of the upper step portion 74a and the side surface of the lower step portion 74b of the guide protrusion 74. Along with this, the scraper 25 moves forward along the upper end surface of the extraction cylinder 13 (see FIG. 23).

  When the plunger 72b of the spring plunger 72 reaches the front end of the lower step portion 74b and comes off, the plunger 72b slides downward along the inclined surface 74c. Along with this, the scraper 25 tilts downward around the axis of the bolt 71 by its own weight, and comes into contact with the inclined surface 13a of the extraction cylinder 13 to restrict downward tilting (see FIG. 24).

  On the other hand, when the scraper drive motor 78 is driven to rotate in the reverse direction, the scraper 25 moves backward as the rack bar 76 and the slider 25b move backward. At this time, the plunger 72b of the spring plunger 72 moves backward while sliding upward along the inclined surface 74c of the guide projection 74. Along with this, the scraper 25 moves backward while tilting upward around the axis of the bolt 71 (see FIG. 25).

  After that, as the plunger 72b of the spring plunger 72 slides back along the upper surface of the upper step portion 77a, the scraper 25 moves backward in a state of facing diagonally forward and returns to the retracted position. The shooter 19 is vibrated by contacting the lower end of the shooter 19 (see FIG. 26). Thereafter, when the plunger 72b of the spring plunger 72 reaches the rear end of the upper step portion 77a and comes off, the scraper 25 tilts downward around the axis of the bolt 71 and returns to the retracted position (see FIG. 15).

  As described above, according to this embodiment, the scraper 25 moves forward and backward each time coffee is extracted and vibrates the shooter 19 when returning to the retracted position, so that the coffee powder adhering to the shooter 19 is shaken off. In this case, since the outlet 19c of the shooter 19 is held at a fixed position, the coffee powder adhering to the shooter 19 is shaken off into the extraction chamber R. For this reason, at the time of regular use (at the time of the second and subsequent use in the case of repeated use), the amount of coffee powder supplied through the shooter 19 is reduced by the adhering amount from the specified amount, but the previous coffee Since what is attached to the shooter 19 at the time of extraction is shaken off after the previous extraction and supplied into the extraction chamber R, the amount of coffee powder supplied into the extraction chamber R is almost the specified amount, and is specified. It is possible to reduce variation from the amount. Moreover, since the coffee powder adhering to the shooter 19 is used for the extraction of the next coffee, the coffee powder can be used effectively without waste.

  In this embodiment, since the scraper 25 that operates during the discharging operation of the coffee powder after extraction vibrates the shooter 19, the configuration for shaking off the coffee powder adhering to the shooter 19 is made simple and inexpensive. Is possible. In addition, according to this, the space necessary for vibrating the shooter 19 may be a small amount of space that the scraper 25 can move to vibrate the shooter 19, so the coffee extractor can be downsized. It is possible to plan.

  Further, in this embodiment, the coffee powder adhering to the shooter 19 is shaken down into the extraction chamber R, and the amount of coffee powder supplied into the extraction chamber R becomes almost a prescribed amount, and the input Regardless of the magnitude of the voltage, a specified amount of coffee powder corresponding to each of the operation buttons 87a to 87g is supplied from the coffee mills 21 and 23 to the shooter 19, so that the quality of the coffee is made more uniform. (Stable supply of good quality coffee) is possible.

  In the above-described embodiment, the scraper 25 vibrates the shooter 19 so that the coffee powder attached to the shooter 19 is shaken off. However, the coffee powder attached to the shooter 19 is shaken off. The vibration member for the movement may be any member that is movable after coffee extraction and vibrates the shooter 19 as a component of the coffee extractor. For example, the upper piston 17 or the lower piston 15 may be used. The present invention is not limited to the above embodiment.

  Moreover, in the said embodiment, as shown in FIG. 17, the relationship between the input voltage to the mill drive motors 61 and 63 and the bean grinding time of the coffee beans corresponding to the operation buttons 87a to 87g is a linear expression. The case where the above relationship can be approximated has been described, but for example, as shown in FIG. If the above-mentioned relationship is approximated by a primary or secondary equation and stored in the electric control unit ECU, and the bean grinding time of the coffee beans is determined based on this approximate equation, the amount of beans to be ground instead Is likely to be far from the specified amount, for example, as shown in FIG. 28, the input voltage is associated with the grinding time of each prescribed amount of coffee beans obtained by actual measurement. It is desirable that the table be stored in the electric control unit ECU.

  Further, in the above-described embodiment, when the scraper 25 moves forward each time coffee is extracted and discharges the coffee powder after extraction in the above-described operation (7), the shooter 19 moves backward and returns to the retracted position. In the above-described operation (2), the scraper 25 is set to move forward and backward after the coffee powder is dropped and supplied from the coffee mills 21 and 23 through the shooter 19 to the extraction cylinder 13. Thus, the shooter 19 can be vibrated when the scraper 25 returns to the retracted position. In this way, after the coffee powder is dropped and supplied from the coffee mills 21 and 23 through the shooter 19 to the extraction cylinder 13, the coffee powder adhering to the shooter 19 is shaken down into the extraction chamber R by vibration by the scraper 25. Therefore, the amount of coffee powder supplied into the extraction chamber R from the first use in the case of repeated use and before the above-described operation (3) can be made almost the prescribed amount. Further, since the coffee powder adhering to the shooter 19 is used for extracting the coffee at that time, it is possible to use the coffee powder effectively without waste and to suppress the deterioration of the flavor of the coffee powder. is there.

It is a front view which shows one Embodiment of the coffee extractor which is a drink extractor by this invention. It is a left view of the coffee extractor shown in FIG. FIG. 3 is a front perspective view of the coffee extractor shown in FIGS. 1 and 2. It is a front view which shows the structure in the exterior case of the coffee extractor shown in FIGS. FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. FIG. 5 is a front perspective view of the configuration shown in FIG. 4. FIG. 5 is a rear perspective view of the configuration shown in FIG. 4. It is an expanded sectional view of the lower piston part shown in FIG. FIG. 6 is an enlarged cross-sectional view of an upper piston portion shown in FIG. 5. It is an enlarged front view of the upper shooter in the shooter shown in FIG. It is an enlarged front view of the lower shooter in the shooter shown in FIG. FIG. 6 is a front perspective view of the scraper shown in FIG. 5. It is an expanded sectional view of the spring plunger shown in FIG. FIG. 6 is a front perspective view of the guide plate shown in FIG. 5. It is an expanded sectional view in the retreat position of the scraper shown in FIG. It is a block diagram which shows the relationship between an electric control apparatus and the apparatus connected to this. It is explanatory drawing which showed an example of the relationship between the input voltage memorize | stored in the electric control apparatus shown in FIG. 16, and bean grinding time. It is sectional drawing which shows the state in operation | movement (1) of the structure shown in FIG. 5, (2). It is sectional drawing which shows the state in operation | movement (3) of the structure shown in FIG. 5, (4). It is sectional drawing which shows the state in the operation | movement (5) of the structure shown in FIG. It is sectional drawing which shows the state in operation | movement (6) of the structure shown in FIG. It is sectional drawing which shows the state in operation | movement (7) of the structure shown in FIG. FIG. 6 is an operation explanatory diagram of the scraper in the operation (7) of the configuration shown in FIG. 5. FIG. 6 is an operation explanatory diagram of the scraper in the operation (7) of the configuration shown in FIG. 5. FIG. 6 is an operation explanatory diagram of the scraper in the operation (7) of the configuration shown in FIG. 5. FIG. 6 is an operation explanatory diagram of the scraper in the operation (7) of the configuration shown in FIG. 5. It is explanatory drawing which showed an example of the relationship between the input voltage memorize | stored in the electric control apparatus shown in FIG. 16, and bean grinding time. It is explanatory drawing which showed an example of the relationship between the input voltage memorize | stored in the electric control apparatus shown in FIG. 16, and bean grinding time.

Explanation of symbols

DESCRIPTION OF SYMBOLS 13 ... Extraction cylinder, 15 ... Lower piston, 17 ... Upper piston, R ... Extraction chamber, 19 ... Shooter, 21, 23 ... Coffee mill, 25 ... Scraper, 25a ... Arm, 25b ... Slider, 61, 63 ... Mill drive Motor, 65, 67 ... Hopper, 71 ... Bolt, 72 ... Spring plunger, 72a ... Casing, 72b ... Plunger, 73 ... Guide plate, 74 ... Guide projection, 74a ... Upper step, 74b ... Lower step, 74b1 ... Slope, 74c ... Slope

Claims (3)

An extraction mechanism that has an extraction chamber and extracts a beverage from the extracted substance introduced into the extraction chamber, and an introduction member that introduces the extraction substance from above into the extraction chamber. In a beverage extractor provided with a supply mechanism for supplying a specified amount of the extracted substance,
A beverage extractor characterized in that a discharge port of the introduction member is held at a fixed position, and a vibration member that vibrates the introduction member after extraction of the beverage is provided. An extraction mechanism that has an extraction chamber and extracts a beverage from the extracted substance introduced into the extraction chamber, and an introduction member that introduces the extraction substance from above into the extraction chamber. In a beverage extractor provided with a supply mechanism for supplying a specified amount of the extracted substance,
The discharge port of the introduction member is held at a fixed position, and a vibration member is provided to vibrate the introduction member after the supply of the extraction substance from the supply mechanism to the introduction member and before the extraction of the beverage. A beverage extractor characterized by 3. The beverage extractor according to claim 1, wherein the extraction mechanism is provided with a discharge mechanism that discharges the extracted substance to the outside of the extraction chamber after the beverage is extracted. The beverage extractor is characterized in that an operating member that operates during operation of the discharging mechanism also serves as the vibrating member.

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